KR101189561B1 - efficiency test system for gas injector - Google Patents

Abstract

The present invention discloses a gas injector performance test apparatus, and the present invention provides the same external environmental conditions for the flow rate characteristics and the electrical characteristics of the injector, and then collects the data based thereon so as to perform comparative evaluation, as well as initial data. Collects and stores the change according to the usage period of the sensor through various sensor data and flow rate data for the performance test.In particular, the emergency shutoff valve and the discharge valve are operated when the gas injector undergoes a test other than the use condition. On the other hand, the control panel that collects data input from various sensors is configured to generate arithmetic processing and injector driving signals independently, and can be stored and managed in real time through the PC's operating program linked with the control panel. Is configured to work, It can be applied to real vehicles while improving the data reliability of the test on the gas injector, enabling the step-by-step test of the gas injector, increasing the convenience of operation and operation of the test device, and increasing the safety in the performance test stage of the gas injector. This shortens the performance test evaluation period of the gas injector, which reduces the number of people and the cost of the performance test.

Description

Efficiency test system for gas injector

The present invention relates to a performance test technique of an injector for supplying gas to an engine in a vehicle engine using gaseous fuel such as LPG (liquefied petroleum gas) and CNG (compressed natural gas), and more particularly, a test apparatus. Collect and monitor experimental environmental condition data and change data from the control panel through various temperature, pressure, flow, and current sensors attached to it, and also monitor the reliability of the test data by calculating and processing condition changes. The present invention relates to a gas injector performance test apparatus that can provide convenience in operation and operation of a gas injector.

Recently, consumption of liquefied petroleum gas and compressed natural gas is increasing as part of the environmental pollution problem of exhaust gas of the differential vehicle and measures to reduce the emission gas, and vehicle engines using such gas as fuel are being actively developed.

The fuel supply system of a vehicle engine using the above gas as a fuel includes a storage container for storing gas fuel (LPG, CNG), a fuel supply line extending from the storage container to the engine side, an emergency shutoff valve, a regulator, and a fuel A gas fuel filter for filtering foreign substances is provided, as well as an injector for injecting fuel into the engine, and an electronic control circuit (ECU) for controlling the injector.

However, in the gas injector that plays a key role in the gas-fueled vehicle, the flow rate changes according to the combustion efficiency of the engine, the pulsation of the regulator and fuel line, the temperature and pressure change according to the external environment change, etc. Due to this, there is no conventional test apparatus for evaluating and comparing the exact characteristics of the gas injector.

Moreover, unlike LPG (liquefied petroleum gas), CNG (compressed natural gas) has a relatively high working pressure and a high demand for engines, making it difficult to secure accurate data. As commercialization is done without testing, safety accidents are being raised.

The present invention is to improve the conventional problems as described above, the flow rate characteristics and electrical characteristics of the injector to provide the same external environmental conditions and then collect the data based on this to make a comparative evaluation, as well as the period of use of the initial data The main purpose is to provide a gas injector performance test device that can be used for performance testing by collecting and storing the change according to the sensor data and flow rate data.

Another object of the present invention is to improve the safety in the performance test step of the gas injector by configuring the emergency shutoff valve and the discharge valve to operate when a situation other than the use condition occurs in the test of the gas injector.

Another object of the present invention is to configure the control panel to collect the data input from the various sensors independently to generate arithmetic processing and injector drive signal, while in real time through the operating program of the PC associated with the control panel By storing and managing the monitoring, the gas injector can be tested step-by-step while increasing the data reliability of the test on the gas injector, and the convenience of operation and operation of the test device is improved. The goal is to shorten the performance testing period for gas injectors, thereby reducing the number of personnel and costs associated with performance testing.

Gas injector performance test apparatus of the present invention for achieving the above object, a plurality of high-pressure vessel for storing the test fluid; A first storage container connected to the high pressure container and a first supply line and configured to primarily store test fluid supplied from the high pressure container; A second storage container connected to the first storage container and a second supply line and configured to secondaryly store test fluid supplied from the first storage container at a pressure to be used in an injector; A test chamber connected to the second reservoir and a third supply line, wherein the injector is fixed such that a performance test of the injector against a high temperature external environment and an impact cycle is performed at a low temperature when a test fluid is supplied from the second reservoir; ; The first supply line includes a first regulator configured to set the initial supply pressure by reducing the supply pressure of the test fluid, and the first regulator according to the pressure change of the test fluid in which the initial supply pressure is set by the first regulator. The control valve is connected to the opening and closing operation so that the test fluid of a predetermined pressure set in the storage container is stored, and the second supply line to the secondary supply line so that the test fluid to be stored in the second storage container is secondly stored at a stable pressure for use in the injector. Connecting a second regulator for precisely setting a pressure of a test fluid, driving the injector to the test chamber, testing a performance according to driving while checking a pressure change of a test fluid supplied to the injector, and Selection of the control valves as well as the first and second regulators from the pressure change Configured to connect a control panel to control the.

According to an aspect of the present invention, the control panel is connected to a PC equipped with an injector performance test operating program through a CAN communication and remotely controlled by the PC, and the performance test information of the injector by the control panel is the PC. Configured to be stored in the monitoring.

According to another aspect of the present invention, the first supply line checks the pressure of the test fluid and transmits it to the control panel, a pressure sensor and a temperature sensor, and the control of the control panel when the pressure change is checked by the pressure sensor A plurality of first shut-off valve is configured to open and close to block the supply of the test fluid is received, the plurality of first shut-off valve is configured in a plurality of parallel lines branched from the first supply line, respectively.

According to another aspect of the present invention, the first supply line is supplied with a third regulator, a pressure sensor, a temperature sensor, a flow meter, and a control of the control panel when the pressure change is checked by the pressure sensor. A plurality of second shutoff valves are configured to open and close to block the plurality of second shutoff valves, and the plurality of second shutoff valves are respectively configured in a plurality of parallel lines branched from the first supply line.

According to another aspect of the invention, the third supply line is connected through a plurality of parallel lines branched with the test chamber, and each of the plurality of parallel lines constitute a pressure sensor and a temperature sensor, the input of the test chamber On the side, it is divided into a large capacity and a small capacity, and a plurality of flowmeters for minimizing the pulsation generated when the injector is driven, and an additional connection of a ball valve for replacing the test injector and inspecting the supply line and manually shutting off the supply of the test fluid do.

According to another aspect of the present invention, the test chamber is configured with a temperature sensor, the output terminal of the test chamber is connected to a plurality of discharge lines consisting of a pressure sensor and a solenoid valve, respectively, the solenoid valve is connected to the test chamber When the performance test of the injector through the control panel is closed and controlled, at the end of the performance test is controlled by the control panel to open the drain of the test fluid, the opening control of the solenoid valve by the control panel is the pressure sensor And until the discharge pressure of the test fluid sensed by the pump reaches zero.

According to another aspect of the present invention, the control panel includes the measurement information of the pressure sensor, the temperature sensor and the flow meter which are selectively configured in the first, second, third supply lines, as well as the parallel lines, the discharge lines, and the test chamber, respectively. After collection, it is transmitted to a PC through can communication, and the operating program of the PC monitors the received measured information sequentially by date and time, and monitors each gas supply line according to changes in pressure and temperature and changes in external environment. And arithmetic processing of the driving condition.

As described above, the gas injector performance test apparatus of the present invention provides the same external environmental conditions for the flow characteristics and the electrical characteristics of the injector, collects data based on the same, and makes changes in comparison with the period of use of the initial data. Whether or not it is collected and stored through various sensor data and flow rate data is used for performance testing, and emergency shutoff valves and discharge valves are operated when a situation other than the use condition occurs during the test of gas injector, and inputted from various sensors. The control panel that collects data is configured to generate arithmetic processing and injector driving signals independently, and is configured to be monitored and managed in real time through the PC's operating program linked with the control panel. For gas injector Performance of gas injectors applied to real vehicles while enabling step-by-step testing of gas injectors while increasing data reliability of the test, increasing the convenience of operation and operation of test equipment, and increasing safety in the test phase of gas injectors By shortening the test evaluation period, it is possible to expect the effect of reducing the number of people and the cost of the performance test.

1 is a block diagram of a gas injector performance test apparatus according to an embodiment of the present invention.

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

1 is a block diagram of a gas injector performance test apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a gas injector performance test apparatus according to an embodiment of the present invention includes a high pressure vessel 10, first and second storage vessels 20 and 30, a test chamber 40, and a control panel 50. ), And a PC 60.

The high pressure vessel (10) is composed of multiple stages to store the test fluid on the basis of the CNG fuel, the maximum working pressure conditions, the high pressure vessel (10) ball valves (B3) (B4) which are opened and closed by manual operation, respectively (B5) is configured, the ball valve (B3) (B4) (B5) is a supply line constituting the pressure sensor (P) and the ball valve (B6) for providing pressure measurement information to the control panel 50, respectively ( L) and connected to the first storage container 20 through a first supply line L1, and accordingly the multi-stage high pressure container 10 through the supply line L and the first supply line L1. Test fluid stored in the) can be supplied to the first reservoir (20).

The first storage container 20 is connected through the high pressure vessel 10 and the first supply line L1, and is configured to primarily store test fluid supplied from the high pressure vessel 10.

At this time, the first supply line (L1) is controlled by the control panel 50, the first regulator (R1) for setting the initial supply pressure by reducing the supply pressure of the test fluid, and the first regulator (R1) The control valve (V1) is controlled by the control panel 50 to open and close the test fluid of the predetermined pressure set in the first storage container 20 in accordance with the pressure change of the test fluid is set by the initial supply pressure Is composed.

In addition, the first supply line (L1) by checking the pressure of the test fluid and transmits it to the control panel 50 by the pressure sensor (P1) and temperature sensor (T1), and the pressure sensor (P1) When the pressure change is checked, a plurality of first shut-off valves V2 and V3 are opened and closed to control the supply of the test fluid under the control of the control panel 50, as well as the third regulator R3. The pressure sensor P2, the temperature sensor T2, the flow meter U1, and the pressure sensor P2 open and close to block the supply of test fluid under the control of the control panel 50 when the pressure change is checked. A plurality of second shutoff valves V4 and V5 that are operated are sequentially configured.

In this case, the plurality of first shut-off valves V2 and V3 are respectively configured in a plurality of parallel lines L11 and L12 branched from the first supply line L1, and in addition, the plurality of second shutoff valves. The valves V4 and V5 are also configured in a plurality of parallel lines L13 and L14 branched from the first supply line L1.

Here, the third regulator (R3) and the plurality of second shut-off valve (V4) (V5) is for the interlock test with the vehicle regulator.

The second storage container 30 is connected to the first storage container 20 through the second supply line (L2), the test fluid supplied from the first storage container 20 to the pressure to be used in the injector Configured for secondary storage.

At this time, the control panel to precisely set the pressure of the test fluid in the second supply line (L2) so that the test fluid to be stored in the second storage container 30 can be secondarily stored at a stable pressure for use in the injector. A second regulator R2 whose operation is controlled by 50 is configured.

That is, the second reservoir (R2) by the second reservoir 30 can be stored in the test fluid of the stable pressure actually used in the injector.

The test chamber 40 is supplied with the injector fixed and connected to the injector so that the performance of the injector against the high temperature external environment and impact cycle at low temperature when the test fluid is supplied from the second reservoir 30 is performed. Piping is provided, and is connected through the second storage container 30 and the third supply line (L3).

At this time, the third supply line (L3) has a plurality of branched parallel lines (L31, L32) connected to the test chamber 40, each of the plurality of parallel lines (L31) (L32) pressure measurement information. And pressure sensors (P3, P4, P5) and temperature sensors (T3, T4, T5) for providing the temperature measurement information to the control panel 50 in real time, as well as being divided into large and small capacities when driving the injector. A plurality of flowmeters (U2) (U3) for minimizing pulsations generated, and ball valves (B1) (B2) for replacing the test injector and inspecting the supply line and manually shutting off the supply of test fluid, respectively do.

In addition, a temperature sensor (T6) (T7) for providing real-time measurement temperature information to the control panel 50 is configured in the test chamber 40, as well as a plurality of discharge at the output terminal of the test chamber 40 Lines L4 and L5 are respectively configured, and each of the plurality of discharge lines L4 and L5 includes pressure sensors P6 and P7 that provide measurement pressure information to the control panel 50 in real time. The solenoid valves V6 and V7 are opened and closed under the control of the control panel 50.

At this time, the solenoid valve (V6) (V7) is closed control by the control panel 50 during the performance test of the injector through the test chamber 40 to prevent the leakage of test fluid, at the end of the performance test Open control is performed by the control panel 50 so that the test fluid is drained to the outside, the opening control of the solenoid valve (V6) V7 by the control panel 50 is the pressure sensor (P6) ( It continues to control until the discharge pressure of the test fluid sensed by P7 reaches zero.

The control panel 50 includes the first, second and third supply lines (L1, L2, L3), parallel lines (L11, L12, L13, L14) (L31, L32) and discharge lines (L4, L5). And pressure sensors (P1, P2, P3, P4, P5, P6, P7) and temperature sensors (T1, T2, T3, T4, T5, T6, T7) and flow meters (optional) respectively configured in the test chamber (40). After collecting the measurement information of the U1, U2, U3 and transmits it to the PC 60 through can communication, the injector provided in the test chamber 40 in accordance with the operating program provided in the PC 60 Drive to test the performance of the injector.

That is, the control panel 50 tests the performance according to the driving while checking the pressure change of the test fluid supplied to the injector when the injector is driven, and the first and second regulators R1 from the checked pressure change. R2 is of course to selectively control the control valve (V1).

The PC 60 remotely controls the control panel 50 through can communication. The PC 60 monitors and stores information collected from the control panel 50 in order of date and time, while monitoring the pressure of each gas supply line. And the fluctuation condition of the injector drive according to the temperature change and the external environment change, and the monitoring and calculation process are performed by the operation program.

As such, in the performance test apparatus of the gas injector according to the embodiment of the present invention, as shown in FIG. 1, first, the control panel 50 includes the first, second, and third supply lines L1, L2, and L3, and a parallel line. (L11, L12, L13, L14) (L31, L32), and discharge lines (L4, L5) as well as pressure sensors (P1, P2, P3, P4, P5, P6) which are optionally configured in the test chamber 40, respectively. P7) and collects measurement information on pressure, temperature and flow rate from temperature sensors (T1, T2, T3, T4, T5, T6, T7) and flow meters (U1, U2, U3) and sends them to the PC via can communication. Provides real time to 60.

Then, in the state in which the injector is connected to the injector rail in the test chamber 40 through the supply pipe, the ball valves B3, B4, B5 provided in the multi-stage high pressure vessel 10 as well as the supply line L The ball valve (B6) provided in the) to open so that the test fluid stored in the high-pressure container 10 is supplied to the first supply line (L1) through the supply line (L).

Next, the control panel 50 controls the first regulator (R1) to reduce the supply pressure of the test fluid flowing into the first supply line (L1) to set the initial supply pressure.

Then, the set initial supply pressure is detected by the pressure sensor (P1) and then transmitted to the control panel 50,

The control panel 50 is set at the initial supply pressure sensed by the pressure sensor P1 and at the same time, the first shut-off valve (V2) respectively configured in a plurality of parallel lines (L11, L12) (L13) (L14) (V3) and the second shut-off valve (V4) (V5) are opened.

Then, the test fluid in which the initial supply pressure is set through the plurality of parallel lines L11 and L12 (L13 and L14) as well as the third regulator R3 may be stored at a constant pressure in the first storage container 20. will be.

That is, the test fluid in which the initial supply pressure is set by the control valve V1 provided at the input side of the first storage container 20 may be stored in the first storage container 20 while maintaining a constant pressure. .

In this case, the test fluid of a predetermined pressure is stored in the first storage container 20 by the control valve V1 under the control of the control panel 50, and configured in the first supply line L1. Pressure sensors (P1, P2) and temperature sensors (T1, T2) to measure the pressure and temperature according to the storage of the test fluid and transmits them to the control panel 50 in real time,

The control panel 50 may include a first shut-off valve V2 provided in the plurality of parallel lines L11 and L12 and L13 and L14 when the pressure of the test fluid supplied from the transmitted measurement information is higher than an initial set pressure. By closing the control valve (V3) and the second shut-off valve (V4) (V5), the test fluid is blocked from flowing to the first storage container 20 through the first supply line (L1).

The control panel 50 may include a first shut-off valve provided in the plurality of parallel lines L11 and L12 and L13 and L14 when the pressure of the test fluid supplied from the transmitted measurement information is lower than an initial set pressure. The first regulator R1 is operated to reset the initial supply pressure while maintaining the open state of V2 and V3 and the second shut-off valve V4 and V5.

Accordingly, the first and second shut-off valves V2, V3, V4, and V5 as well as the sequential control of the control valve V1 always maintain a constant pressure in the first storage container 20. This can be stored.

Meanwhile, the test fluid stored at the constant pressure in the first storage container 20 as described above is supplied to the second storage container 30 through the second regulator R2 provided in the second supply line L2. The second regulator (R2) is operated under the control of the control panel 50 to adjust the pressure to maintain a stable pressure for the test fluid to be used in the injector, accordingly stored in the second reservoir (30) The test fluid is capable of maintaining the pressure available at the injector.

Meanwhile, when the test fluid is stored by precisely controlling the pressure in the second storage container 30 as described above, a condition for testing the performance of the injector from the stored test fluid is prepared.

The control panel 50 drives the injector connected to the injector rail through the supply pipe in the test chamber 40 according to the change in the static or external environment, and the ball valve B1 provided at the input side of the test chamber 40. Open B2.

Then, the test fluid stored in the second storage container 30 is injector through a plurality of parallel lines (L31) (L32) branched from the third supply line (L3), as well as the third supply line (L3). The supply is made.

At this time, the pressure sensors (P3, P4, P5) and the temperature sensors (T3, T4, T5) configured in the plurality of parallel lines (L31) (L32), respectively, the pressure measurement information and the temperature measurement information of the supplied test fluid After checking in real time and transmits it to the control panel 50, the control panel 50 according to the test fluid injection amount of the driving injector, as well as the loss or the pressure is excessively increased according to the injection pressure You can check the performance of the injector.

On the other hand, when the performance test for the injector as described above, the control panel 50 closes and controls the first and second shut-off valves (V2, V3) (V4, V5) to supply the test fluid to the first and second Electrons that are blocked in the first and second storage vessels 20 and 30 through lines L1 and L2, and are configured in the discharge lines L4 and L5 that are output sides of the test chamber 40, respectively. Open the valves V6 and V7.

Then, the test fluid stored in the first and second storage vessels 20 and 30 may be formed in the test chamber 40 as well as the second and third supply lines L2 and L3 and the parallel lines L31 and L32. Drained to the outside through the discharge line (L4) (L5), the pressure of the discharge line (L4) (L5) according to the drain is measured by the pressure sensor (P6) (P7) and then to the control panel 50 Is provided.

In this case, the control panel 50 opens the solenoid valves V6 and V7 until the discharge pressure of the test fluid measured by the pressure sensors P6 and P7 reaches zero. This prevents test fluid from remaining in the test apparatus.

Here, the control panel 50, as well as the first, second, third supply lines (L1, L2, L3), parallel lines (L11, L12, L13, L14) (L31, L32) and the discharge line (L4, L5) and pressure sensors (P1, P2, P3, P4, P5, P6, P7) and temperature sensors (T1, T2, T3, T4, T5, T6, T7), which are selectively configured in the test chamber 40, respectively, After collecting the measurement information of the flow meters (U1, U2, U3) and transmits it to the PC 60 through can communication, the PC 60 is injector provided in the test chamber 40 according to the operation program In addition to monitoring the performance test according to the operation of the injector, it is possible to process the fluctuation conditions of the injector driving.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that such changes and modifications are within the scope of the claims.

10; High pressure vessel 20; 1st container
30; Second reservoir 40; Test chamber
50; Control panel 60; PC

Claims (7)

A plurality of high pressure vessels 10 for storing test fluids; A first storage container 20 connected to the high pressure container 10 and a first supply line L1 and configured to primarily store a test fluid supplied from the high pressure container 10; A second storage container 30 connected to the first storage container 20 and a second supply line L2 and configured to secondaryly store a test fluid supplied from the first storage container 20 at a pressure to be used in an injector; ; It is connected to the second reservoir 30 and the third supply line (L3), and when the test fluid is supplied from the second reservoir 30, the performance test of the injector against the external environment and impact cycle of high temperature at low temperature A test chamber 40 to which the injector is fixed to be made; Including,
The first supply line (L1) in the first regulator (R1) for setting the initial supply pressure by reducing the supply pressure of the test fluid, and the pressure change of the test fluid is set by the first regulator (R1) initial supply pressure According to the control valve 50 to open and close so that the test fluid of a predetermined pressure set in the first storage container 20, the pressure sensor to check the pressure of the test fluid and transmit it to the control panel 50 (P1) And a plurality of first shut-off valves which are opened and closed to block the supply of test fluid under the control of the control panel 50 when the pressure change is checked by the temperature sensor T1 and the pressure sensor P1. V1) and V2 are configured, and the plurality of first shutoff valves V1 and V2 are configured in a plurality of parallel lines L13 and L14 branched from the first supply line L1, respectively.
The second supply line (L2) has a second regulator (R2) for precisely setting the pressure of the test fluid so that the test fluid to be stored in the second reservoir 30 is stored at a stable pressure for use in the injector Configure the connection,
The test chamber 40 drives and controls the injector, tests the performance according to the drive while checking the pressure change of the test fluid supplied to the injector, and the first and second regulators R1 and R1 (R2) from the pressure change. ), Of course, the gas injector performance test apparatus, characterized in that the control panel 50 is configured to selectively control the control valve (V1). The method of claim 1,
The control panel 50 is connected to the PC (60) equipped with the injector performance test operating program and the CAN (CAN) communication is remotely controlled by the PC 60, the performance of the injector by the control panel 50 Test information is stored in the PC (60), the gas injector performance test apparatus, characterized in that configured to be performed. delete The method of claim 1,
The control panel when the pressure change is checked by the third regulator R3, the pressure sensor P2, the temperature sensor T2, the flow meter U1, and the pressure sensor P2 in the first supply line L1. Under the control of 50, a plurality of second shut-off valves V4 and V5 which are opened and closed to shut off the supply of the test fluid are configured, and the plurality of second shut-off valves V4 and V5 are the first Gas injector performance test apparatus, characterized in that each configured in a plurality of parallel lines branching from the supply line (L1). The method of claim 1,
The third supply line L3 is connected to the test chamber 40 through a plurality of parallel lines L31 and L32 branched to each other, and each of the parallel lines L31 and L32 has a pressure sensor P3. Comprising (P4) (P5) and the temperature sensor (T3) (T4) (T5), the input side of the test chamber 40 is divided into a large capacity and a small capacity a plurality of to minimize the pulsation generated when driving the injector Gas injector performance characterized by additionally connecting the flow meter (U2) (U3) and ball valve (B1) (B2) for the replacement of the test injector and inspection of the supply line and the manual shutoff of the supply of test fluid. Testing device. The method of claim 1,
A plurality of temperature sensors T6 and T7 are configured in the test chamber 40, and pressure sensors P6 and P7 and solenoid valves V6 and V7 are respectively configured at the output terminals of the test chamber 40. Connect the discharge line (L4) (L5) of
The solenoid valves V6 and V7 are controlled to be closed by the control panel 50 when performing the performance test of the injector through the test chamber 40, and are controlled by the control panel 50 when the performance test is finished. To drain the test fluid
The opening control of the solenoid valves V6 and V7 by the control panel 50 is performed until the discharge pressure of the test fluid detected by the pressure sensors P6 and P7 reaches zero. Gas injector performance test device, characterized in that configured to. The method of claim 1,
The control panel 50 includes the first, second and third supply lines L1 to L3, parallel lines L11 to L14, L31 to L32, discharge lines L4, L5, and a test chamber. 40) collects the measurement information of the pressure sensors (P1 ~ P7) and temperature sensors (T1 ~ T7) and flow meters (U1 ~ U3) selectively configured in each of them, and transmits them to the PC (60) through can communication, The operating program of the PC 60 stores and stores the measured information sequentially by date and time, and configures each gas supply line to process a change condition of an injector driving according to pressure and temperature changes and external environment changes. Gas injector performance test device, characterized in that.

Images