KR102451919B1 - Integrated control device for oil and coolant - Google Patents

Abstract

An oil-cooling water integrated control device according to an embodiment of the present invention has an oil inlet through which engine oil flows and an oil outlet through which engine oil flows, and a cooling water inlet through which coolant flows and a cooling water outlet through which coolant flows. an oil heat exchanger, a flow path converter provided to selectively open and close the oil inlet and the cooling water inlet according to the movement, a driving unit for moving the flow path converter, an oil temperature sensor for measuring engine oil temperature and outputting a corresponding signal; and a controller controlling an operation of the driving unit according to an output signal of the oil-on sensor.

Description

INTEGRATED CONTROL DEVICE FOR OIL AND COOLANT

The present invention relates to an oil-cooling water integrated control device for reducing oil temperature rise time and performing oil cooling by simultaneously controlling oil and cooling water to be supplied according to operating conditions.

The engine generates rotational force by combustion of fuel and discharges thermal energy to the outside. In particular, the coolant absorbs thermal energy while circulating in the engine and the like, and discharges it to the outside through a radiator or the like.

When the engine coolant temperature is low, the viscosity of the oil increases and frictional force increases, fuel consumption increases, and the temperature of the exhaust gas rises slowly to increase the activation time of the catalyst. In addition, the quality of the exhaust gas may be deteriorated, and it may take a long time for the function of the heater to be normalized, which may cause inconvenience to passengers and drivers.

When the coolant temperature of the engine is overheated, knocking occurs, and the ignition timing must be adjusted to suppress this, so that the performance of the engine may be deteriorated. Also, if the temperature of the lubricating oil is excessive, the lubrication action may be deteriorated.

A thermostat or flow control valve is applied to control the coolant flow or oil flow to the oil cooler for the purpose of improving fuel efficiency, but it does not significantly contribute to the optimization of fuel efficiency. That is, in terms of fuel efficiency, the effect of improving fuel efficiency is greatly achieved by controlling both the coolant flow rate and the oil flow rate.

Matters described in this background section are prepared to promote understanding of the background of the invention, and may include matters that are not already known to those of ordinary skill in the art to which this technology belongs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an oil-cooling water integrated control device for reducing oil temperature rise time and performing oil cooling by simultaneously controlling oil and cooling water to be supplied according to operating conditions.

An oil-cooling water integrated control device according to an embodiment of the present invention has an oil inlet through which engine oil flows and an oil outlet through which engine oil flows, and a cooling water inlet through which coolant flows and a cooling water outlet through which coolant flows. an oil heat exchanger, a flow path converter provided to selectively open and close the oil inlet and the cooling water inlet according to the movement, a driving unit for moving the flow path converter, an oil temperature sensor for measuring engine oil temperature and outputting a corresponding signal; It may include a controller for controlling the operation of the driving unit according to the output signal of the oil-on sensor.

The controller may operate the driving unit when the oil-on sensor output temperature corresponds to a set low temperature condition or a set high temperature condition.

In the oil-cooling water integrated control device according to an embodiment of the present invention, an oil supply part through which oil is introduced, a discharge hole connected to the oil inlet part, and a bypass hole for bypassing the oil are formed, and the flow path converter is movably provided. and a driving unit housing, wherein the flow path converter has a first oil hole and a second oil hole, and the oil supplied from the oil supply unit according to the position of the flow path changer is supplied to the first oil hole and the oil inlet part. The oil may be supplied to the oil heat exchanger through the passage or the oil supplied from the oil supply unit may be discharged through the bypass hole through the second oil hole.

The oil-cooling water integrated control device according to an embodiment of the present invention may further include a driving unit spring mounted on the driving unit housing to push the flow path switch.

The oil-cooling water integrated control apparatus according to an embodiment of the present invention may further include an oil valve provided in the oil inlet, a coolant valve provided in the coolant inlet, and a valve shaft connecting the oil valve and the coolant valve. can

The oil valve and the coolant valve may be simultaneously opened and closed according to the engine oil pressure flowing into the oil inlet.

The oil-cooling water integrated control apparatus according to an embodiment of the present invention may further include a return spring that provides a restoring force so that the oil valve and the coolant valve block the oil inlet and the coolant inlet, respectively.

The oil-cooling water integrated control device according to an embodiment of the present invention may further include a stopper provided to limit rotation of the oil valve and the cooling water valve.

The driving unit may be an electric thermostat that selectively moves the flow path converter.

The driving unit is mounted on the thermostat housing filled with wax, an electric heater selectively transferring heat to the wax, and the thermostat housing, connected to the flow path converter, and pushing the flow path converter according to the expansion of the wax load may be included.

An oil-cooling water integrated control device according to an embodiment of the present invention includes an oil supply unit through which oil is introduced, an oil discharge hole connected to the oil inlet unit, a cooling water supply unit through which coolant is introduced, and a cooling water discharge hole connected to the cooling water inlet unit, , further comprising a driving unit housing movably provided with the flow path changer, wherein a first land for selectively blocking the oil discharge hole and a second land for selectively blocking the coolant discharge hole are formed in the flow path changer, The first land and the second land may be formed to simultaneously open or simultaneously block the oil discharge hole and the coolant discharge hole.

A third land that blocks mixing of the oil and the coolant may be formed between the first land and the second land.

The driving unit may be a solenoid that selectively moves the flow path converter.

The oil-cooling water integrated control apparatus performed according to an embodiment of the present invention may reduce the oil temperature rise time and perform oil cooling by simultaneously controlling the supplied oil and cooling water according to operating conditions.

1 is a block diagram of a cooling system including an oil-cooling water integrated control device according to an embodiment of the present invention.
2 is a block diagram of a cooling system including an oil-cooling water integrated control device according to an embodiment of the present invention.
3 and 4 are cross-sectional views of an oil-cooling water integrated control device according to an embodiment of the present invention.
5 and 6 are cross-sectional views of an oil-cooling water integrated control device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of explanation, the present invention is not necessarily limited to the bar shown in the drawings, and the thickness is enlarged to clearly express various parts and regions. It was.

However, in order to clearly describe the embodiment of the present invention, parts irrelevant to the description are omitted, and the same or similar components are given the same reference numerals throughout the specification.

In the following description, the names of components are divided into first, second, and the like to distinguish them because the names of the components are the same, and the order is not necessarily limited thereto.

1 is a block diagram of a cooling system including an integrated oil-cooling water control device according to an embodiment of the present invention, and FIG. 2 is a cooling system including an oil-cooled water integrated control device according to an embodiment of the present invention. It is a configuration diagram.

The cooling system including the oil-cooling water integrated control device according to an embodiment of the present invention includes the cooling water control valve 30 and the oil-cooling water integrated control device 60 according to the output signal of the vehicle operating state signal unit 10 . and a controller 20 for controlling the operation.

The vehicle operating state signal unit 10 includes a water temperature sensor 12 that measures the cooling water temperature and outputs a corresponding signal, an oil temperature sensor 14 that measures the engine oil temperature and outputs a corresponding signal, and measures the intake air temperature and corresponds to the corresponding signal. It includes an intake air temperature sensor 16 that outputs a signal and an accelerator opening sensor 18 that measures the position of the accelerator pedal and outputs a corresponding signal.

The coolant supplied from the water pump 50 is supplied to the coolant control valve 30 through the block 3 and the cylinder head 5 of the engine 1 , and the coolant control valve 30 is connected to the controller 20 ) to supply cooling water to a plurality of heat exchange elements.

Here, the plurality of heat exchange elements include, for example, an LP-EGR cooler 44 , a heater 46 , a radiator 40 , a reservoir tank 42 , an HP-EGR cooler 48 and an oil heat exchanger 70 . may include

However, the oil-cooling water integrated control apparatus according to an embodiment of the present invention is not limitedly applied to the cooling system, but may be applied to a cooling system that exchanges heat between oil and coolant in various types.

3 and 4 are cross-sectional views of an oil-cooling water integrated control device according to an embodiment of the present invention.

The oil-cooling water integrated control device 60 according to an embodiment of the present invention includes an oil inlet 72 through which engine oil flows and an oil outlet 73 through which engine oil flows, and a coolant inflow through which coolant flows. An oil heat exchanger 70 having a part 74 and a cooling water outlet 75 through which the coolant flows is formed so that the oil inlet 72 and the cooling water inlet 74 are selectively opened and closed at the same time according to the movement It may include a flow path switch 80 , a driving unit 90 for moving the flow path switch 80 , the oil-on sensor 14 , and the controller 20 . The controller 20 may control the operation of the driving unit 90 according to an output signal of the oil-on sensor 14 .

The oil-cooling water integrated control device 60 according to an embodiment of the present invention includes an oil supply unit 102 through which oil is introduced, a discharge hole 104 connected to the oil inlet unit 72 , and a bypass hole through which oil is bypassed. 106 is formed, and further includes a driving unit housing 100 in which the flow path diverter 80 is movably provided.

A first oil hole 82 and a second oil hole 84 are formed in the flow path changer 80 , and the oil supplied from the oil supply unit 102 is supplied to the first oil channel according to the position of the flow path changer 80 . The oil supplied to the oil heat exchanger 70 or supplied from the oil supply unit 102 through the oil hole 82 and the oil inlet 72 is bypassed through the second oil hole 84 . It can be discharged through (106).

The flow path diverter 80 of the oil-cooling water integrated control device 60 according to an embodiment of the present invention is, for example, a sleeve 81; It may be transferred to the exchanger 70 or may be transferred to the bypass hole 106 .

The oil supply unit 102 receives oil from the engine 1 , for example, an oil pump mounted on the engine 1 , and includes the oil passing through the bypass hole 106 and the oil outlet 73 . ) is delivered to the engine 1, for example, an oil filter.

The oil-cooling water integrated control device 60 according to an embodiment of the present invention may further include a driving part spring 108 mounted on the driving part housing 100 to push the flow path switch 80 .

The oil-cooling water integrated control device 60 according to the embodiment of the present invention includes an oil valve 110 provided in the oil inlet 72 , a coolant valve 112 provided in the coolant inlet 74 , and the A valve shaft 114 connecting the oil valve 110 and the coolant valve 112 may be further included.

The oil valve 110 and the coolant valve 112 may be simultaneously opened and closed according to the engine oil pressure flowing into the oil inlet 72 .

The oil-cooling water integrated control device 60 according to the embodiment of the present invention allows the oil valve 110 and the coolant valve 112 to block the oil inlet 72 and the coolant inlet 74, respectively. It may further include a return spring 116 that provides a restoring force.

The oil-cooling water integrated control device 60 according to the embodiment of the present invention may further include a stopper 118 provided to limit rotation of the oil valve 110 and the coolant valve 112 , The rotation of the oil valve 110 and the coolant valve 112 is limited within a set range by the stopper 118 .

The driving unit 90 may be an electric thermostat 91 that selectively moves the flow path converter 80 .

That is, the driving unit 90 is mounted on a thermostat housing 92 filled with wax 93 , an electric heater 94 that selectively transfers heat to the wax 93 , and the thermostat housing 100 , , connected to the flow path diverter 80 , and may include an operation rod 96 that pushes the flow path diverter 80 according to the expansion of the wax 93 .

The controller 20 may operate the driving unit 90 when the output temperature of the oil on sensor 14 corresponds to a set low temperature condition or a set high temperature condition.

The oil heat exchanger 70 receives cooling water from the cooling water control valve 30 through the cooling water inlet 74 .

Hereinafter, the operation of the oil-cooling water integrated control device according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4 .

When the engine warms up quickly in the initial cold condition, friction is reduced due to an increase in oil temperature to improve fuel efficiency.

As shown in FIG. 3 , in the initial cold condition, the first oil hole 82 and the discharge hole 104 communicate with each other by the position of the flow path switch 80 , that is, the sleeve 81 .

Then, the oil transferred from the oil supply unit 102 flows to the oil inlet unit 72 . The oil valve 110 is opened and the oil flows into the heat exchanger 70 .

At this time, the coolant valve 112 is connected to the oil valve 110 through the valve shaft 114 , and the coolant valve 112 is also opened.

Accordingly, the cooling water and the oil flow to the oil heat exchanger 70 at the same time, and the heat of the cooling water is transferred to the oil, so that the oil temperature can be rapidly increased. Here, the low temperature condition may be, for example, the oil temperature may be set to about 60 degrees or less.

Thereafter, when the oil temperature is, for example, 60 degrees or higher, as shown in FIG. 4 , the controller 20 controls the operation of the driving unit 90 to determine the position of the flow path switch 80 . The second oil hole 84 and the bypass hole 106 communicate with each other.

That is, for example, the electric heater 94 of the electric thermostat 91 generates heat to expand the wax 93 , and the operation rod 96 pushes the sleeve 81 .

Then, the oil transferred from the oil supply unit 102 flows through the bypass hole 106 to the engine 1 , that is, the oil filter.

At this time, the coolant valve 112 and the oil valve 110 are closed by the return spring 116 .

In this case, since oil and cooling water do not flow to the oil heat exchanger 70 , the differential pressure of the oil heat exchanger 70 is reduced, thereby improving fuel efficiency.

Again, if the engine 1 continues to operate, the oil temperature increases.

For example, when the oil temperature reaches a set high temperature condition of 100 degrees or more, the operation of the heater 94 is stopped and the sleeve 81 moves to the position shown in FIG.

Then, the cooling water and the oil flow simultaneously to the oil heat exchanger 70 , and the heat of the oil is transferred to the cooling water, thereby cooling the oil.

3 and 4, the electric heater 94 does not operate under the low temperature condition or the high temperature condition, and when the low temperature condition and the high temperature condition are not, the electric heater 94 operates has been described, but is not limited thereto. That is, on the contrary, depending on the positions of the first oil hole 82 , the second oil hole 84 , the discharge hole 104 and the bypass hole 106 , in the low temperature condition or the high temperature condition, A configuration in which the first oil hole 82 and the discharge hole 104 communicate with the first oil hole 82 is possible by operating the heater 94 to push the flow path converter 80 , and a repeated description of the configuration will be omitted.

5 and 6 are cross-sectional views of an oil-cooling water integrated control device according to another embodiment of the present invention.

In describing the oil-cooling water integrated control device according to another embodiment of the present invention shown in FIGS. 5 and 6 , the same configuration as the example shown in FIGS. 3 and 4 will be omitted.

The oil-cooling water integrated control device 61 according to another embodiment of the present invention includes an oil supply unit 132 through which oil is introduced, an oil discharge hole 134 connected to the oil inlet unit 72 , and a cooling water supply unit through which coolant is introduced. (136) and a cooling water discharge hole 138 connected to the coolant inlet 74, and further comprising a driving unit housing 131 in which the flow path switch 80 is movably provided, the flow path switch 80 ), a first land 142 for selectively blocking the oil discharge hole 134 and a second land 144 for selectively blocking the coolant discharge hole 138 are formed, and the first land 142 and the second land 144 may be formed to simultaneously open or simultaneously block the oil discharge hole 134 and the coolant discharge hole 138 .

The flow path diverter 80 may be, for example, a spool 130 .

A third land 146 that blocks mixing of the oil and the coolant may be formed between the first land 142 and the second land 144 .

The driving unit 90 may be a solenoid 150 that selectively moves the flow path switch 80 .

Hereinafter, the operation of the oil-cooling water integrated control device 61 according to another embodiment of the present invention will be described with reference to FIGS. 5 and 6 .

In the low-temperature or high-temperature conditions described above, as shown in FIG. 6 , the solenoid 150 pushes the spool 130 to open the oil discharge hole 134 and the coolant discharge hole 138 .

Then, the oil transferred from the oil supply unit 132 flows to the oil heat exchanger 70 , and the coolant transferred from the cooling water supply unit 136 also flows to the oil heat exchanger 70 , and the cooling water and the Heat exchange between oil takes place.

If it does not correspond to the low temperature condition or the high temperature condition, by the operation of the controller 20, the solenoid 150 pulls the spool 130 to the oil discharge hole 134, as shown in FIG. and the cooling water discharge hole 138 is closed.

Then, the coolant and oil do not flow to the oil heat exchanger 70 so that heat exchange between the coolant and oil does not occur.

As described above, according to the oil-cooling water integrated control apparatus performed according to the embodiment of the present invention, the oil temperature rise time can be shortened and oil cooling can be performed by simultaneously controlling the oil and cooling water supplied according to the operating conditions. .

That is, when the oil is low temperature, it receives heat from the cooling water to increase the oil temperature to improve fuel efficiency, and when the oil is high temperature, the oil can be cooled by radiating heat to the cooling water.

In addition, when the oil is bypassed without flowing to the oil heat exchanger, the differential pressure of the oil heat exchanger is reduced to improve fuel efficiency.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be easily changed by those of ordinary skill in the art to which the present invention pertains from the embodiments of the present invention and equivalent. Including all changes to the extent recognized as such.

1: engine 3: engine block
5: cylinder head 10: vehicle operating status signal part
12: water temperature sensor 14: oil temperature sensor
16: intake air temperature sensor 18: Excel opening degree sensor
20: controller 30: coolant control valve
40: radiator 42: reservoir tank
44: LP-EGR cooler 46: heater
48: HP-EGR cooler 50: water pump
60: oil-cooling water integrated control unit 70: oil heat exchanger
72: oil inlet 73: oil outlet
74: coolant inlet 75: coolant outlet
80: euro converter 81: sleeve
82: first oil hole 84: second oil hole
90: drive unit 92: thermostat housing
93: wax 94: electric heater
96: actuation rod 100: drive unit housing
102: oil supply 104: drain hole
106: bypass hole 108: drive spring
110: oil valve 112: coolant valve
114: valve shaft 116: return spring
118: starter 130: spool
132: oil supply 134: oil drain hole
136: coolant supply 138: coolant discharge hole
142: first land 144: second land
146: third land 150: solenoid

Claims (13)

an oil heat exchanger having an oil inlet through which engine oil flows and an oil outlet through which engine oil flows, and a cooling water inlet through which cooling water flows and a cooling water outlet through which cooling water flows;
a flow path converter provided to selectively open and close the oil inlet and the cooling water inlet according to the movement thereof;
a driving unit for moving the flow path converter;
an oil temperature sensor that measures the engine oil temperature and outputs a corresponding signal; and
a controller controlling an operation of the driving unit according to an output signal of the oil-on sensor;
Oil-cooling water integrated control device comprising a. In claim 1,
The controller operates the driving unit when the oil-on sensor output temperature corresponds to a set low temperature condition or a set high temperature condition. In claim 1,
a driving unit housing having an oil supply unit through which oil is introduced, a discharge hole connected to the oil inlet unit, and a bypass hole for bypassing the oil, the flow path converter being movable;
further comprising,
A first oil hole and a second oil hole are formed in the flow path converter, and the oil supplied from the oil supply part is supplied to the oil heat exchanger through the first oil hole and the oil inlet part depending on the position of the flow path converter. , an oil-cooling water integrated control device in which the oil supplied from the oil supply unit is discharged through a bypass hole through the second oil hole. In claim 3,
a driving part spring mounted on the driving part housing to push the flow path converter;
Oil-cooling water integrated control device further comprising a. In claim 3,
an oil valve provided in the oil inlet;
a cooling water valve provided in the cooling water inlet; and
a valve shaft connecting the oil valve and the coolant valve;
Oil-cooling water integrated control device further comprising a. In claim 5,
An oil-cooling water integrated control device in which the oil valve and the coolant valve are simultaneously opened and closed according to the engine oil pressure flowing into the oil inlet. In claim 5,
a return spring providing restoring force so that the oil valve and the coolant valve block the oil inlet and the coolant inlet, respectively;
Oil-cooling water integrated control device further comprising a. In claim 5,
a stopper provided to limit rotation of the oil valve and the coolant valve;
Oil-cooling water integrated control device further comprising a. In claim 3,
The driving unit is an electric thermostat for selectively moving the flow path converter, oil-cooling water integrated control device. In claim 9,
the driving unit
wax-filled thermostat housing;
an electric heater selectively transferring heat to the wax; and
an operation rod mounted on the thermostat housing and connected to the flow path diverter for pushing the flow path diverter according to the expansion of the wax;
Oil-cooling water integrated control device comprising a. In claim 1,
a driving unit housing having an oil supply unit through which oil is introduced, an oil discharge hole connected to the oil inlet unit, a cooling water supply unit through which cooling water is introduced, and a cooling water discharge hole connected to the cooling water inlet unit, the drive unit housing being movable;
further comprising,
A first land for selectively blocking the oil discharge hole and a second land for selectively blocking the coolant discharge hole are formed in the flow path converter, and the first land and the second land are formed between the oil discharge hole and the coolant Oil-coolant integrated control unit formed to open or close the drain hole at the same time. In claim 11,
An oil-cooling water integrated control device in which a third land is formed between the first land and the second land to block mixing of the oil and the coolant. In claim 11,
The driving unit is a solenoid that selectively moves the flow path converter.

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