KR101316234B1 - Rapid Heating Apparatus for Internal Combustion Engine and the Control Method thereof - Google Patents

Abstract

The present invention provides a heat storage device (10) having a heat storage material (12) therein, in which a rapid temperature raising device of an internal combustion engine is heated up using exhaust gas heat released by opening and closing of a control valve (20) provided in an exhaust pipe (1). And a thermofluid circulator 30 having a thermofluid that is heated by heat exchange with the heat storage material 12 to form a circulating flow, and the hot fluid of the thermofluid circulator 30 is circulated on one side and is on the opposite side to the internal combustion engine. By consisting of a heat exchanger 40 which is connected to the temperature (heating oil or transmission oil) / cooling water which is a low-temperature fluid of the heat exchanger circulator 50 followed by a heat exchange, a simple configuration does not bring about space constraints due to layout, It prevents the increase of frictional resistance due to low temperature coolant or oil, which causes the fuel economy to be lowered at the start or cooling of the vehicle, and especially with carbon monoxide (CO) or hydrocarbon (HC) Has a feature that can prevent the occurrence of a large amount of harmful exhaust gas.

Description

Rapid Heating Apparatus for Internal Combustion Engine and the Control Method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine, and in particular, a rapid heating device of an internal combustion engine that does not lead to an increase in fuel efficiency caused by increased friction due to a low oil temperature and a coolant temperature when the vehicle is started or the vehicle is cooled, and that does not cause an increase in harmful emissions. It relates to a control method.

In general, during start-up or cooling, exhaust gases containing a large amount of pollutants such as carbon monoxide (CO) or hydrocarbons (HC) are generated.

This phenomenon causes the combustion chamber temperature to drop during the initial start of the vehicle or when the vehicle is cooled, thereby emitting a large amount of harmful emissions.

At this time, since the temperature of the noxious exhaust gas reducing catalyst is not high enough to purify the noxious exhaust gas, noxious exhaust gas is discharged to the atmosphere without being purified even after passing through the catalyst.

As a countermeasure, it is possible to respond by adjusting fuel injection and ignition timing or adjusting fuel injection amount, but this method generates a considerable amount of harmful gas during the adjustment process, and thus, it is ineffective and, in particular, increases fuel economy.

As another countermeasure, there is a method of heating a fluid such as oil or cooling water. For example, a method of heating oil or cooling water by using waste heat waste gas discarded through a tail pipe, which is an end of an exhaust system.

This method improves the temperature increase rate by exchanging heat between waste heat and oil or coolant that is discarded to the outside through tail pipe during cooling of the vehicle, thereby increasing the temperature of the internal combustion engine rather quickly without losing fuel economy. This will be.

However, in the early stage of engine start-up, the low temperature of the exhaust gas waste heat results in a very low heat exchange performance with oil or cooling water, which results in the generation of large amounts of pollutants such as carbon monoxide (CO) or hydrocarbons (HC). In the initial stage of cooling or cooling, which has to be reduced, the effect is little or very weak, so it is limited to the rapid temperature increase effect.

5 illustrates an example in which the problem caused by the low temperature of the exhaust gas waste heat at the start of the internal combustion engine is rapidly solved when the oil or cooling water is rapidly heated using the waste gas waste heat.

FIG. 5A illustrates a case in which a separate heat storage material is used to accumulate heat, and as shown in FIG. 5A, a main flow of the exhaust gas 110 that accumulates heat in the heat storage material and another sub branch of the exhaust gas branched therefrom. An exhaust pipe (100) divided into the stream (120), a coolant circuit (200) for exchanging heat with the coolant using the main stream (110) or a subflow (120), and an engine oil circuit (300) for exchanging heat with the engine oil; , The transmission oil circuit 400 is heat-exchanged with the transmission oil.

The coolant circuit 200, the engine oil circuit 300, and the transmission oil circuit 400 all have a layout that passes through a heat storage material that accumulates heat from exhaust gas, and passes through the heat storage material during heat storage of the heat storage material. Three-way valves are provided to block the flow.

As described above, the coolant circuit 200, the engine oil circuit 300, and the transmission oil circuit 400 are configured to pass through the heat storage material, so that even when the exhaust gas temperature is low, the oil and the coolant exchange heat with the heat storage material that has accumulated heat. It can be quickly heated up.

Therefore, it is possible to solve the problem of limited rapid temperature increase at the start of the internal combustion engine.

In the above manner, since the heat storage performance of the heat storage material is most important, a material having a high phase change temperature is generally used as the heat storage material, but the heat storage material is selected due to the structure in which the oil and the coolant stay in the space containing the heat storage material and heat exchange. Consideration should be given to the limit temperatures of the oil and coolant.

This is because if the heat storage temperature of the heat storage material rises higher than the limit temperature of the oil and cooling water, it may cause oil or coolant durability problems.

On the other hand, Figure 5 (b) is to solve the problem caused by the heat storage temperature of the heat storage material even when using a separate heat storage material that accumulates heat, which is exhaust heat wrapped around the exhaust pipe 500 to heat exchange with the exhaust gas as shown A heat exchanger line 800 having a recoverer 600, a three-way valve and a circuit with the exhaust heat recovery unit 600, and a fluid line installed in the heat exchanger line circulating the elevated temperature of the cooling water toward the internal combustion engine E ( 900 and subsequent regenerator 700.

As described above, since the exhaust heat recoverer 600 which exchanges heat with the exhaust gas is separated from the heat storage 700 via the heat exchange line 800 having a three-way valve, the limit temperature of the coolant may not be considered when selecting the heat storage material. .

Korean Patent Publication No. 10-1997-700815 (February 12, 1997) relates to thermal adjustment of a vehicle exhaust system composed of a phase change material and a fluid transferring heat to a heat exchanger chamber and a catalytic converter. See lines 63 to.

However, in this case, there are many components that are not used outside the vehicle cooling, such as the exhaust heat recoverer 600 having the heat exchange line 800 and the heat storage 700 having the fluid line 900, and thus there may be layout constraints of the space configuration. Inevitably, the cost increases due to the use of additional parts.

In particular, in this case, it is limited to only the temperature of the coolant, so that it is inconvenient to provide a temperature raising function for the engine oil or the transmission oil.

Accordingly, the present invention in view of the above-described invention by accumulating heat from the exhaust gas by integrating a heat storage material having a heat storage material heat exchanged with the cooling water or oil (engine oil or transmission oil), the cooling water or oil It is an object of the present invention to provide a rapid heating apparatus of an internal combustion engine that simplifies the configuration for rapid temperature raising of (engine oil or transmission oil) and does not bring about space constraints due to layout.

In addition, the present invention heat exchanges using the heat accumulated from the exhaust gas when the coolant or oil (engine oil or transmission oil) is lower than the normal operating temperature, so that the coolant of the low temperature during the initial start or cooling of the vehicle due to rapid temperature increase The purpose of the present invention is to provide a rapid temperature control method of an internal combustion engine that can improve fuel economy by preventing frictional resistance caused by oil and oil, and in particular, prevent generation of a large amount of harmful exhaust gas components such as carbon monoxide (CO) or hydrocarbon (HC). There is this.

Rapid heating device of the internal combustion engine of the present invention for achieving the above object is installed in the front through hole and the rear through hole perforated in the exhaust pipe, block the exhaust gas before passing through the rear through the exhaust to the front through hole A control valve;

A heat accumulator having the exhaust pipe having the front through holes and the rear through holes located therein and having a heat storage material heated therein by heat exchange with the exhaust gas discharged into the front through holes;

A thermofluid circulator having a thermofluid that is heated by heat exchange with the heat storage material to form a circulating flow;

The hot fluid of the heat fluid circulator is circulated to one side and oil (engine oil or transmission oil) or coolant is circulated to the heat exchange circulator connected to the internal combustion engine on the opposite side so as to exchange heat with each other, the exhaust gas temperature and the heat storage material temperature And a heat exchanger operated and controlled by a controller having the oil (engine oil or transmission oil) temperature and the cooling water temperature as control factors.

And a control unit.

The control valve is made of a thermostat for opening and closing the passage due to the temperature change of the exhaust gas or controlled by the controller.

The heat accumulator surrounds the front through-hole of the exhaust pipe with the heat storage material, forms a space in which the rear through-hole of the exhaust pipe is located as an empty space, and adds a heat insulating material therein.

The heat storage material is made of a material having a high phase change temperature, and the temperature is measured by analogy through a temperature sensor or modeling the exhaust gas temperature.

The heat fluid circulator may include a heat fluid circulation pump for transferring heat fluid circulating in the heat accumulator, a low temperature line for flowing low temperature heat fluid from the heat exchanger toward the heat accumulator, and the heat storage in the heat accumulator. It consists of a high temperature line forming a closed circuit with the low temperature line to send the high temperature heat fluid heated up through the heat exchange with the material to the heat exchanger.

The thermal fluid may be heated up to a temperature range above the phase change temperature of the heat storage material.

The heat exchanger has a high temperature connector which connects the heat fluid circulator so as to form a flow in which a high temperature heat fluid flows into one side and then exits again to a low temperature heat fluid, and a low temperature oil (engine oil or transmission oil) on the other side. Or a low temperature connector connected to the heat exchange circulator so as to form a flow in which coolant flows in and out of heat exchange and then exits back to a high temperature state.

In the low temperature connector, an oil loop connected to an oil line of the heat exchange circulator may be formed to doublely surround a cooling water loop connected to a coolant line of the heat exchange circulator.

The oil loop has a three-way type control valve connected to a circulation line forming a closed circuit inside the low temperature connector, and the cooling water loop is connected to a circulation line forming a closed circuit inside the low temperature connector. The cooling water line is provided with a three-way type control valve.

In addition, the rapid temperature control method of the internal combustion engine of the present invention for achieving the above object is the oil (engine oil or transmission oil) temperature or the coolant temperature and the oil in the current state (engine oil or transmission oil) set after starting the vehicle. An operation condition determination step of determining whether the temperature of the oil (engine oil and transmission oil) and the coolant is elevated after comparing the temperature or the coolant temperature with each other;

If there is a need for an elevated temperature of the oil (engine oil or transmission oil) or cooling water, the heat of the heat storage material is heated through heat exchange with the exhaust gas when transferring the thermal fluid to raise the temperature of the oil (engine oil or transmission oil) or cooling water. An operation condition checking step of determining whether the temperature is elevated;

A rapid temperature increase preparation step of raising the heat storage material through heat exchange with exhaust gas when the temperature of the heat storage material is increased;

When the temperature of the oil (engine oil or transmission oil) or cooling water is increased, the heat storage material is heated by exhaust gas flowing through an exhaust pipe, and the heat fluid heated by heat exchange with the heat storage material is sent to one side of the heat exchanger. A rapid temperature increase step of raising the temperature of the oil (engine oil or transmission oil) or cooling water sent from the internal combustion engine;

It is characterized by performing, including.

The condition of the operation condition determination step applies oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set .

The operation condition checking step is oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set when one of the conditions is not satisfied, heat storage material temperature T _{heat storage material} ≤ oil temperature T Apply _oil or T _{heat storage material} ≤ coolant temperature T _coolant .

The set oil temperature T _oil-set and the set coolant temperature T _coolant-set are temperatures for generating a large amount of harmful exhaust gases such as carbon monoxide (CO) or hydrocarbons (HC) or increased frictional resistance resulting in lower fuel efficiency.

The rapid heating preparation step is applied until the _heat storage material temperature T _{heat storage material} ≥ set heat storage material temperature T _heat storage material-set is satisfied.

The present invention integrates the exhaust pipe with a heat storage material for rapidly raising the coolant or oil (engine oil or transmission oil) during initial start-up or cooling, thereby minimizing the number of parts in a simple configuration. Integrated heat storage configuration can reduce the space constraints due to layout.

In addition, the present invention can rapidly heat up the coolant or oil (engine oil or transmission oil) when the temperature is lower than the normal operating temperature by heat exchange using heat accumulated from the exhaust gas, so that the initial start of the vehicle at a relatively low temperature state In cooling, the fuel efficiency is improved by minimizing the increase in frictional resistance of the internal combustion engine.

In addition, the present invention can rapidly increase the temperature of the coolant or oil (engine oil or transmission oil) when the temperature is lower than the normal operating temperature by heat exchange using heat accumulated from the exhaust gas, so that the initial starting of the vehicle at a relatively low temperature state or Even during cooling, the temperature of the cylinder block can be raised to prevent the generation of a large amount of harmful exhaust gases such as carbon monoxide (CO) or hydrocarbons (HC), as well as to increase the catalytic activity rate according to the temperature of the exhaust gas. There is also an effect that can reduce.

In addition, the present invention has an effect that can greatly improve the merchandise for the winter heating performance by rapid indoor heating using the cooling water rapidly heated at the start of the startup.

1 is a block diagram of a rapid heating apparatus of the internal combustion engine according to the present invention, Figure 2 is a partial modification of the rapid heating apparatus of the internal combustion engine according to the present invention, Figure 3 is a rapid heating apparatus according to the invention temperature Figure 4 is an exemplary diagram that is activated or deactivated as a control factor, Figure 4 is an operating state of the rapid heating apparatus of the internal combustion engine according to the present invention, Figure 5 (a), (b) of the conventional rapid heating apparatus of the internal combustion engine. A configuration example.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

1 shows a configuration of a rapid temperature raising device of an internal combustion engine according to the present embodiment.

As shown, the heat accumulator 11 surrounds the exhaust pipe 1 through which the exhaust gas from the engine flows and is located therein, and accumulates heat through heat exchange with the exhaust gas, and exhaust gas flowing through the exhaust pipe 1. An on / off valve 20 for transferring gas to the internal space of the heat storage 11, a heat fluid circulator 30 for raising the temperature of the heat fluid circulated by receiving heat from the heat storage material 12, and one side The heat exchanger 40 through which the high temperature heat fluid of the heat fluid circulator 30 is circulated and the low temperature fluid of the heat exchange circulator 50 which is connected to the internal combustion engine on the opposite side is circulated to exchange heat with each other, and the heat accumulator 11 through exhaust gas. It consists of a controller 60 for controlling the heat exchange action of the fluid through the heat exchange action of the heat storage material 12 or the opening and closing of the heat exchanger (40).

The heat accumulator 10 occupies a chamber housing 11 having a chamber space 11a filled with exhaust gas from the exhaust pipe 1, and accumulates heat by occupying the chamber space 11a and exchanging heat with the exhaust gas. It is composed of a heat storage material (12).

The chamber space 11a is not filled with the heat storage material 12 and filled with exhaust gas, and the space occupied by the heat storage material 12 is formed to be about 3/5 or more of the total space.

The heat storage material 12 is filled in the chamber space 11a while surrounding the exhaust pipe 1 passing through the chamber space 11a and applies a material having a high phase change temperature.

In addition, the heat accumulator 10 may be configured to further add a heat insulating material to the inside of the chamber housing 11 to minimize heat loss to the outside when the vehicle is parked or stopped, and also the heat storage material 12 A temperature sensor for detecting the temperature of the and transmits to the controller 60 is further provided.

However, in the present embodiment, the temperature detection of the heat storage material 12 may also be calculated by an analogy method through modeling the incoming exhaust gas temperature.

The on-off valve 20 is installed inside the exhaust pipe 1 in which a plurality of front and rear through holes 2 and 3, which are exhaust holes of the exhaust gas, are perforated.

Specifically, the front through hole 2 of the exhaust pipe 1 is drilled in a section covered by the heat storage material 12 filled in the chamber housing 11 of the heat storage device 10 while the rear hole 3 is a heat storage material. Perforated in the section out of 12, the on-off valve 20 is located between the front through hole (2) and the rear through hole (3).

As described above, the on-off valve 20 is positioned between the front through hole 2 and the rear through hole 3 to control the exhaust gas flow through the exhaust pipe 1.

For example, when describing the exhaust gas flow in the chamber housing 11 of the heat storage 10 when the on-off valve 20 is closed, the rear through hole (the rear portion of the front through-hole 2) due to the closed on-off valve 20 ( 3) the exhaust gas flow is blocked, so that all the exhaust gas exits the front through hole (2).

The exhaust gas exiting the front through hole 2 flows into the heat storage material 12 while being heat-exchanged with the heat storage material 12, and then enters the chamber space 11a not occupied by the heat storage material 12. 12) flows back into the rear through-hole 3, which is not enclosed in 12, and then exits through the exhaust pipe 1;

The on-off valve 21 is composed of a thermostat for opening and closing the passage due to the temperature change, or is configured to be controlled by the controller 60, so that the exhaust gas and the heat storage material 12 between the heat storage material 12 in consideration of the limit temperature It is possible to control the heat exchange of the.

In this embodiment, the on-off valve 21 is configured to be opened and closed under the control of the controller 60 based on the temperature, the control factor temperature is the exhaust gas temperature or heat storage material temperature, oil (engine oil or transmission oil) temperature, Coolant temperature.

In addition, the heat fluid circulator 30 is inserted into the heat accumulator 10 and wrapped with the heat storage material 12 to heat the heat fluid circulation pump 31 which receives heat from the heat storage material 12 and And a low temperature line 32 flowing a low temperature heat fluid from the heat exchanger 40 toward the heat accumulator 10, and a high temperature of the heat accumulating heat generated by heat exchange with the heat storage material 12 in the heat accumulator 10. It consists of a high online (33) connected with the low online (32) to send heat fluid back to the heat exchanger (40).

The low temperature line 32 and the high temperature line 33 are connected to each other to form a closed circuit.

In this case, the thermal fluid is a material that can be used in the temperature range of the phase change temperature of the heat storage material 12 or more.

On the other hand, the heat exchanger 40 is a high-temperature connector 42 to form a flow so that the high-temperature heat fluid flows into one side of the body housing 41 to escape to the low-temperature heat fluid after the heat exchange, and the opposite side It consists of a low temperature connector 43 to form a flow so that the low temperature fluid is introduced into the heat exchange after the heat exchange.

For example, the high temperature connector 42 is connected to the heat fluid circulator 30 so that a high temperature heat fluid is heated using the exhaust gas and the heat storage material 12, while the low temperature connector 43 has a heat exchange circulator ( 50 is connected to the low-temperature oil (engine oil or transmission oil) or cooling water of the internal combustion engine.

The heat exchange circulator 50 is composed of a coolant line 51 forming a cooling water flow coming out of the engine side and into the engine again, and an oil line 52 forming an oil flow coming out of the engine and the transmission side and into the engine and the transmission. do.

The controller 60 receives an exhaust gas temperature or a heat storage material temperature, an oil (engine oil or transmission oil) temperature, a coolant temperature, and treats it as a control factor, thereby controlling the opening / closing control of the on-off valve 21 or the heat exchanger 40. Perform control of the.

The control logic performed by the controller 60 according to this embodiment is described in detail later.

2 shows a modification of the heat exchanger 40 as a modification of the present embodiment.

As shown, the deformed heat exchanger 40 may be formed in a double so that the oil loop 430 surrounds the cooling water loop 530 in the low temperature connector 43 that exchanges heat with the high temperature connector 42. The heat exchange circulator 50 is connected to the loop 430 and the coolant loop 530.

The oil loop 430 includes a three-way valve 432 at an oil line 52 connected to a circulation line 431 forming a closed circuit in the low temperature connector 43, and the cooling water loop 530 is The three-way valve 532 is provided at the cooling water line 51 connected to the circulation line 531 forming a closed circuit in the low temperature connector 43. And, the oil loop 430 is connected to the oil circulation line circulating the oil in the internal combustion engine (engine), the cooling water loop 530 is connected to the cooling water circulation line circulating the coolant in the internal combustion engine (engine), the internal combustion engine ( The exhaust gas line from the exhaust manifold of the engine is connected to the heat storage 10. In this case, the oil circulation line and the cooling water circulation line are basic and essential components of the internal combustion engine (engine). In addition, the circulation line 431 of the oil loop 430 is composed of a supply and recovery line to supply and recover the internal combustion engine (engine) and oil through the three-way valve 432, the cooling water loop 530 The circulation line 531 is composed of a supply and recovery line to supply and recover the internal combustion engine (engine) and the cooling water through the three-way valve (532).

3 is an example of a controller 60 logic in which the rapid temperature raising device according to the present embodiment uses a temperature as a control factor, which uses a heat exchanger 40 between a thermal fluid and oil (engine oil or transmission oil) and cooling water. In order for heat exchange to take place, the heat storage material 12 must be sufficiently heated through heat exchange with the exhaust gas.

When the vehicle is started in step S10, the controller 60 determines whether the rapid temperature raising device is operated using the conditions for the oil (engine oil or transmission oil) temperature or the coolant temperature as in step S20.

The judgment condition is applied when one condition of oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set is not satisfied.

At this time, the set oil temperature T _oil-set and the set coolant temperature T _coolant-set mean a temperature at which a large amount of harmful emissions such as carbon monoxide (CO) or hydrocarbon (HC) are generated, such as increased frictional resistance, which leads to lower fuel efficiency. .

If, as a result of step S20, one of the conditions of oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set is satisfied, the current vehicle condition is oil (engine oil or transmission oil). ) And the coolant does not need to be raised, so the rapid warming device maintains an off state in which it is not operated as in step S30.

On the other hand, as a result of the determination of step S20, if one of the conditions of the oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set is not satisfied, the heat storage material temperature is then used as in step S50. It is determined once again whether the rapid temperature riser is operating.

The judging conditions apply to the heat storage material temperature T _{heat storage material} ≤ oil temperature T _oil or T _{heat storage material} ≤ coolant temperature T _coolant .

If, as a result of step S50, the heat storage material temperature T _{heat storage material} ≤ oil temperature T _oil or T _{heat storage material} ≤ coolant temperature T _coolant is satisfied, the current vehicle condition is to raise the oil (engine oil and transmission oil) and the coolant Since it means a state that does not need to be made, as shown in step S30 the fluid rapid temperature raising device is kept in an inactive state (Off).

On the other hand, if the result of step S50 determines that either the heat storage material temperature T _{heat storage material} ≤ oil temperature T _oil or the T _{heat storage material} ≤ coolant temperature T _coolant is not satisfied, the current vehicle condition is the oil (engine oil or transmission oil) and the coolant. Since it means a state that can increase the temperature, the rapid warming device is switched to the operating state (On), at this time operating the thermal fluid circulation pump 31.

Subsequently, when the rapid temperature raising device is turned off (Off) as described above, the controller 60 determines the condition for the _heat storage material temperature T _{heat storage material} ≥ set heat storage material temperature T _heat storage material-set as in step S100. Give it.

If, as a result of step S100, the heat storage material temperature T _{heat storage material} ≥ set heat storage material temperature T _heat storage material-set is satisfied, the current heat storage material 12 state means that the temperature does not need to be heated up using exhaust gas heat. As in step S110, the heat exchange state between the heat storage material 12 and the exhaust gas is maintained in an off state (off).

This is because the control valve 20 opens between the front through hole 2 and the rear through hole 3 of the exhaust pipe 1 as shown in FIG. It means that the exhaust gas flowing through the heat accumulator 10 is discharged to the outside without raising the heat storage material (12).

On the other hand, as a result of the determination of step S100, if the heat storage material temperature T _{heat storage material} ≥ set heat storage material temperature T _heat storage material-set is not satisfied, the current heat storage material 12 state means a state that needs to be heated up using exhaust gas heat. Therefore, as in step S120, the heat exchange state between the heat storage material 12 and the exhaust gas is switched to a state (On) that occurs.

 This is because the control valve 20 closes between the front through hole 2 and the rear through hole 3 of the exhaust pipe 1 as shown in FIG. The flowing exhaust gas exits the front through hole 2 before being directed to the rear through hole 3 and is sent to the heat storage material 12.

In this state, the exhaust gas penetrates into the heat storage material 12 to heat up the heat storage material 12, and then exits into the chamber space 11a not occupied by the heat storage material 12. The chamber space 11a is filled with exhaust gas.

After the heat exchange with the heat storage material 12, the exhaust gas filling the chamber space (11a) is introduced back to the rear through-hole (3) which is not wrapped with the heat storage material 12, the introduced exhaust gas is exhaust pipe (1) Got through.

The above process is carried out until the _heat storage material temperature T _{heat storage material} ≥ set heat storage material temperature T _heat storage material-set is satisfied.

In this case, the temperature of the heat fluid filled in the heat fluid circulator 30 is raised together with the heat storage material 12 and the heat exchange.

On the other hand, if it is necessary to operate the rapid temperature raising device through the above process, as shown in Figure 4 (c) the controller 60 operates the heat exchanger 40, the high temperature thermal fluid and low temperature oil (engine oil Or transmission oil) / coolant water exchange.

In this state, the high temperature heat fluid of the heat fluid circulator 30 is circulated toward the high temperature connector 42 of the heat exchanger 40, and at the same time, the low temperature oil of the heat exchange circulator 50 is directed to the low temperature connector 43 of the heat exchanger 40. (Engine oil or transmission oil) / cooling water is circulated, whereby low temperature oil (engine oil or transmission oil) / cooling water is heated through the high temperature heat fluid inside the heat exchanger 40 and then circulated to the internal combustion engine (engine and transmission). do.

That is, the coolant heated up from the low temperature state to the high temperature state enters the engine via the coolant line 51 and is replaced with the low temperature coolant, and the oil heated up from the low temperature state to the high temperature state (engine oil or transmission oil) is the oil line 52. ) Into the engine and gearbox to be replaced by low temperature oil.

As a result, the engine and the transmission are continuously supplied with high temperature coolant and oil, which prevents the increase in frictional resistance due to low temperature coolant or oil, which leads to lower fuel efficiency at the beginning of the vehicle or during cooling. Or a large amount of harmful emissions such as hydrocarbons (HC) can be prevented.

Meanwhile, in the modified example of the heat exchanger 40 illustrated in FIG. 2, the operation is the same. However, as described above, the control of the three-way valves 432 and 532 through the controller 60 is required when the rapid temperature raising device is required. By further requiring, the flow of the oil loop 430 made by flowing the circulation line 431 after the low temperature oil supplied through the oil line 52 is heat-exchanged is controlled by the three-way valve 432, the cooling water line 51 After the low-temperature cooling water supplied through the heat exchange, the flow of the cooling water loop 530 which flows through the circulation line 531 is controlled by the three-way control valve 532, but the same is implemented. Therefore, as described above, the circulation line 431 of the oil loop 430 is composed of a supply and recovery line so that the internal combustion engine (engine) and the oil is supplied and recovered through the three-way valve 432, The circulation line 531 of the cooling water loop 530 is composed of an internal combustion engine (engine) and a supply and recovery line for supplying and recovering cooling water through the three-way valve 532.

As described above, the rapid heating apparatus according to the present embodiment has a heat storage device 10 having a heat storage material 12 heated therein by using waste gas waste heat due to the opening and closing action of the control valve 20 provided in the exhaust pipe 1. And a thermofluid circulator 30 having a thermofluid that is heated by heat exchange with the heat storage material 12 to form a circulating flow, and the hot fluid of the thermofluid circulator 30 is circulated on one side and is on the opposite side to the internal combustion engine. By configuring the heat exchanger 40 which is connected to the temperature (temperature of the oil or engine oil or transmission oil) / cooling water which is a low temperature fluid of the heat exchanger continuity subsequent to the heat exchange, it can be configured not to bring about the space constraint due to the layout. .

In addition, the rapid temperature increase apparatus according to the present embodiment circulates the heat storage material 12 heated up using the exhaust temperature and the heat fluid heated up by heat exchange to the heat exchanger 40, so that the temperature of oil (engine oil or transmission oil) / coolant water. By rapidly increasing the pressure, it prevents the increase in frictional resistance caused by low temperature coolant and oil, which leads to lower fuel economy during the initial start or cooling of the vehicle, as well as the removal of harmful emissions such as carbon monoxide (CO) or hydrocarbons (HC). A large amount can be prevented from occurring.

Therefore, an ISG (Idle Stop and Go) vehicle that realizes fuel economy by repeatedly implementing the operation of turning off or turning on the engine according to the road condition by the engine idling stop control according to the present embodiment. When applied to the engine, it is possible to rapidly increase the temperature of the oil (engine oil or transmission oil) / coolant even if the engine off and engine on are repeated frequently, and this feature allows the Idle Stop and Go (ISG) vehicle to be used. In addition to the increase in fuel economy, harmful emissions such as carbon monoxide (CO) or hydrocarbons (HC) can be greatly reduced.

1: exhaust pipe 2, 3: front and rear through hole
10: heat storage 11: chamber housing
11a: chamber space 12: heat storage material
20: on-off valve
30: thermofluid circulator
31: heat fluid circulation pump 32, 33: fluid inlet fluid outflow line
40: heat exchanger 41: body housing
42: high temperature connector 43: low temperature connector
50: heat exchange circulator 51: cooling water line
52: oil line 60: controller
430 oil loop 431531 circulation line
432,532 three-way valve 530 coolant loop

Claims (14)

A control valve installed at a front through hole and a rear through hole drilled in the exhaust pipe to block the exhaust gas before passing through the rear through hole and discharge the exhaust gas into the front through hole;
A heat accumulator having the exhaust pipe having the front through holes and the rear through holes located therein and having a heat storage material heated therein by heat exchange with the exhaust gas discharged into the front through holes;
A thermofluid circulator having a thermofluid that is heated by heat exchange with the heat storage material to form a circulating flow;
The hot fluid of the thermal fluid circulator is circulated to one side and the heat exchange circulator opposite to the internal combustion engine is circulated to the oil or coolant, either engine oil or transmission oil, and connected to exchange heat with each other. A heat exchanger operatively controlled by a controller having a temperature and a coolant temperature of one of the engine oil and the transmission oil as control factors;
Rapid heating device of the internal combustion engine, characterized in that configured to include.
The method of claim 1, wherein the control valve is a rapid heating device of the internal combustion engine, characterized in that consisting of a thermostat for opening and closing the passage by the temperature change of the exhaust gas or controlled by the controller.
The method of claim 1, wherein the heat accumulator surrounds the front through-hole of the exhaust pipe with the heat storage material, forms a space in which the rear through-hole of the exhaust pipe is located, and adds a heat insulating material therein. Rapid heating device of the internal combustion engine, characterized in that.
The method of claim 3, wherein the heat storage material is made of a material that changes the phase by the temperature, the temperature of the internal combustion engine, characterized in that by measuring the temperature by analogy method through the modeling (temperature) or the exhaust gas temperature. Temperature riser.
The method of claim 1, wherein the heat fluid circulator is a heat fluid circulation pump for transferring the heat fluid circulating inside the heat accumulator, and a low temperature line for flowing a low temperature heat fluid from the heat exchanger toward the heat accumulator, And a high temperature line constituting a closed circuit with the low temperature line to send the high temperature heat fluid, which is heated up through heat exchange with the heat storage material, to the heat exchanger.
The rapid heating apparatus of claim 5, wherein the heat fluid may be heated up to a temperature range equal to or greater than a phase change temperature of the heat storage material.
The heat exchanger of claim 1, wherein the heat exchanger connects the heat fluid circulator so that a high temperature heat fluid flows in to one side and then flows out again to the low temperature heat fluid, and the engine at a low temperature toward the other side. And a low temperature connector connected to the heat exchange circulator so as to form a flow in which oil or coolant, one of the oils of the transmission oil or the transmission oil, is heat-exchanged and then exits again to a high temperature state.
8. The dual arrangement of claim 7, wherein an oil loop connected to the oil line of the heat exchange circulator encloses the coolant loop connected to the coolant line of the heat exchange circulator, and a state in which the low temperature connector wraps the coolant loop inside the oil loop. Rapid heating device of the internal combustion engine, characterized in that consisting of.
The method of claim 8, wherein the oil loop has a three-way type control valve to the oil line portion connected to the circulation line constituting a closed circuit inside the low temperature connector, and is released from the engine side by the action of the three-way type control valve. Oil is discharged to the engine after passing through the heat exchanger or to the engine without passing through the heat exchanger;
The coolant loop has a three-way type control valve connected to a circulation line constituting a closed circuit inside the low temperature connector, and the cooling water from the engine side is controlled by the action of the three-way type control valve. After the rough is discharged toward the engine or discharged toward the engine without passing through the heat exchanger.
After comparing the temperature or the coolant temperature of the oil which is one of the engine oil or the transmission oil set after the vehicle starts with the temperature or the coolant temperature of the oil which is one of the engine oil or the transmission oil at the present state, the engine oil and the transmission oil An operation condition determination step of determining whether one of the oil and the coolant is heated up;
If there is a need to increase the temperature of the engine oil or one of the transmission oil or cooling water, the heat storage is heated by heat exchange with the exhaust gas when transferring the thermal fluid to increase the temperature of the engine oil or one of the transmission oil or the cooling water Operating condition checking step of determining again whether the temperature of the material is elevated;
A rapid temperature increase preparation step of raising the heat storage material through heat exchange with exhaust gas when the temperature of the heat storage material is increased;
When the temperature of the engine oil or one of the transmission oils is increased, the temperature of the heat storage material is increased by the exhaust gas flowing through the exhaust pipe, and the heat fluid heated up by heat exchange with the heat storage material is sent to one side of the heat exchanger. A rapid temperature increase step of raising an oil or coolant which is one of the engine oil or the transmission oil sent from the internal combustion engine to the other side;
Rapid temperature control method of the internal combustion engine, characterized in that performed.
The method of claim 10, wherein the operating condition determination step is a rapid temperature increase of the internal combustion engine, characterized in that the oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set is applied. Control method.
The method according to claim 10, wherein the operation condition check step is the oil temperature T _oil > set oil temperature T _oil-set or coolant temperature T _coolant > set coolant temperature T _coolant-set when one of the conditions are not satisfied, the heat storage material temperature T _{heat storage A} method for controlling rapid temperature increase of an internal combustion engine, characterized by applying a _material ≤ oil temperature T _oil or a T _{heat storage material} ≤ cooling water temperature T _coolant .
The method according to claim 11 or 12, wherein the set oil temperature T _oil-set and the set coolant temperature T _coolant-set have a large amount of harmful exhaust gases such as carbon monoxide (CO) or hydrocarbons (HC) or increased frictional resistance resulting in lower fuel efficiency. A method for controlling rapid temperature increase of an internal combustion engine, wherein the temperature is 75 ° C. or lower which is a temperature at which the vehicle is started at the start or when the engine is cooled.
The method of claim 10, wherein the rapid temperature preparation preparation step is applied until the _heat storage material temperature T _{heat storage material} ≥ set heat storage material temperature T _heat storage material-set is satisfied.

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