CN-121738880-B - Fuel injection pump performance test platform for engine

Abstract

The invention discloses a performance test platform of an oil injection pump for an engine, and relates to the technical field of performance test of oil injection pumps. The invention comprises a test bench, wherein a test drive is arranged on the test bench, a mounting seat is arranged on the upper surface of the test bench, an oil injection pump stuck with a thermocouple is arranged on the mounting seat, the upper surface of the test bench is connected with a test cover in a sliding manner, an electric heat radiation plate is distributed on the inner wall of the test cover in a linear array manner, an independent cold cavity is arranged on the outer side of the test cover, and the cold cavity can be communicated with the test cover. According to the invention, the test cover and the cold chamber form the double-environment chamber, the high-temperature environment is simulated in the test cover, the cold chamber simulates high-speed cooling air flow, the heating surface is simulated to be close to the heat radiation surface of the engine cabin, the windward surface simulates the air receiving surface of the oil injection pump in the running process of the vehicle, the test result is closer to reality, and the extreme transient working condition of high-speed rushing into the rain or alternate impact of high-temperature air and low-temperature air of the vehicle can be accurately simulated.

Inventors

• ZHANG DASHENG
• ZHOU WEI
• LI YONG
• LIANG JINKE
• Chang Xiuwang
• WANG BO
• CHENG YUE
• WANG ZHONGGANG
• CONG XIAOJIE
• Hu Zixun
• QU SHUANGBIN

Assignees

• 山东康达精密机械制造有限公司

Dates

Publication Date

20260508

Application Date

20260227

Claims (7)

1. 1. The utility model provides an oil injection pump performance test platform for engine, includes testboard (1), its characterized in that, install test drive (2) on testboard (1), the upper surface of testboard (1) is installed mount pad (9), installs the oil injection pump that posts the thermocouple on mount pad (9), the upper surface sliding connection of testboard (1) has test cover, and the inner wall linear array of test cover distributes has electric heat radiation board (152), and the outside of test cover is provided with independent cold cavity (17), and cold cavity (17) can be linked together with the test cover; The internal part of the test bench (1) is provided with a cooling tank (3), an oil return pump (4), an oil storage tank (5) and an oil inlet pump (6), the oil return pump (4) can convey the cooled fuel in the cooling tank (3) to the oil storage tank (5), the upper surface of the test bench (1) is provided with an oil inlet pipe (7), the oil inlet pump (6) can convey the fuel in the oil storage tank (5) to the oil inlet pipe (7), the inner top of the test cover is hung and provided with an oil return connecting pipe (11), the oil return connecting pipe (11) is communicated with the cooling tank (3) through an oil return main pipe (8), a plurality of branch pipes (111) are arranged on the oil return connecting pipe (11), and a flowmeter (112), a temperature sensor (113) and a pressure control valve (114) are arranged on the branch pipes (111); The test cover comprises a cover frame (10) and a telescopic cover plate (15), a sliding window is formed in the cover frame (10), the telescopic cover plate (15) is arranged in the sliding window, sliding grooves (101) are formed in the inner bottom and the inner top of the sliding window, supporting sliding rods (151) are arranged at crease positions on the inner side of the telescopic cover plate (15), the supporting sliding rods (151) are slidably connected in the sliding grooves (101), an electric heat radiating plate (152) is fixedly mounted on the supporting sliding rods (151), a supporting window plate (16) is arranged in the middle of the telescopic cover plate (15), a cold chamber (17) is fixedly mounted on the supporting window plate (16), and a main body of the cold chamber (17), a main body of the telescopic cover plate (15) and the supporting window plate (16) are made of elastic bendable materials.
2. 2. The fuel injection pump performance test platform for an engine according to claim 1, wherein the top and the bottom of the telescopic cover plate (15) are provided with elastic sealing gaskets.
3. 3. The fuel injection pump performance test platform for the engine according to claim 2, wherein the heat insulation plugboard (171) is spliced in the cold chamber (17).
4. 4. The fuel injection pump performance test platform for the engine according to claim 3, wherein an air cooler (12) is fixedly installed at the top of the cover frame (10), a cold source main pipe (13) is arranged at the outlet of the air cooler (12), a plurality of cold source auxiliary pipes (131) are arranged on the cold source main pipe (13), a plurality of cold source communication holes (172) are formed in the top of the cold chamber (17), and the cold source auxiliary pipes (131) are communicated with the cold source communication holes (172).
5. 5. The fuel injection pump performance test platform for the engine according to claim 4, wherein the cold source main pipe (13) is provided with a water adding pipe (132), and the water adding pipe (132) is communicated with an external water source.
6. 6. The fuel injection pump performance test platform for the engine according to claim 5, wherein four groups of guide wheels (14) are rotatably arranged at the top of the cover frame (10), and the cold source main pipe (13) is commutated through the guide wheels (14).
7. 7. The fuel injection pump performance test platform for the engine according to claim 6, wherein a refrigerator is arranged in the cooling tank (3), two groups of cooling tanks (3) are arranged, the oil return main pipe (8) is communicated with the two groups of cooling tanks (3) through a first three-way valve, and the two groups of cooling tanks (3) are communicated with the oil return pump (4) through a second three-way valve.

Description

Fuel injection pump performance test platform for engine Technical Field The invention relates to the technical field of fuel injection pump performance test, in particular to a fuel injection pump performance test platform for an engine. Background The performance of an injection pump as the "heart" of a diesel engine fuel supply system, including fuel supply, pressure stability, response speed, efficiency and thermal load capacity, directly determines the engine's dynamics, economy, emission levels and reliability. Therefore, comprehensive and accurate testing of the performance is an essential link for product research and development, quality control and fault diagnosis. The utility model discloses a publication number CN 222797678U's patent discloses a high-pressure fuel injection pump testing arrangement, including the board, but install the motor of horizontal migration on the board, motor one side is provided with the backup pad that can adjust from top to bottom, has placed the fuel injection pump in the backup pad, be provided with the clamp plate in the backup pad, the clamp plate pushes down the fuel injection pump, the epaxial joint first that is connected with of motor, be connected with joint second on the camshaft of fuel injection pump, connect and to dismantle between the second and be connected, the both sides of backup pad are connected with supporting baffle, are connected with the regulation seat on the supporting baffle, install thermal probe and displacement sensor on the regulation seat, thermal probe and displacement sensor are towards the plunger position in the fuel injection pump. Compared with the prior art, the high-pressure fuel injection pump testing device has the advantages that the fuel injection pump is quickly connected with the motor through the connector, the temperature change and the deformation are measured by the heat-sensitive probe and the displacement sensor on the supporting plate, the testing data are provided, and the support is provided for improving the shell material of the high-pressure fuel injection pump. Compared with the prior art, the patent has the following technical problems in the actual use process: 1. The above patent simply measures the heat and deformation of the fuel injection pump shell, the measured parameters are isolated, the measured parameters are not synchronous and correlated with the core hydraulic performance of the fuel injection pump, namely the fuel supply quantity attenuation, the leakage quantity increase and the pressure fluctuation change in a thermal state, and the thermal performance attenuation cannot be estimated. The ultimate goal of thermal performance testing is to evaluate the negative impact of high temperature on function. The device lacks equipment and interfaces for synchronously measuring oil supply quantity, efficiency and tightness at a high temperature, so that the key index of performance degradation caused by temperature rise cannot be quantified. 2. The device only measures the heat (self-generated heat) generated by the operation of the fuel injection pump, and cannot simulate a real thermal environment, and on a real engine, the fuel injection pump also bears external heat loads from high-temperature air convection of an engine cabin and heat radiation of adjacent high-temperature components (such as an exhaust manifold). The device is completely unable to simulate this critical external heating, so the measured temperature is far below the actual operating conditions. Meanwhile, the performance of the oil injection pump in an extreme environment, such as an extreme transient working condition that an automobile is flushed into rain at a high speed or high-low temperature air alternately impacts, cannot be simulated, and the test condition is too mild and has no challenges and authenticity. Disclosure of Invention The invention aims to solve the problems, and provides a performance test platform for an oil injection pump for an engine. The invention adopts the following technical scheme for realizing the purposes: The utility model provides an engine is with injection pump performance test platform, includes the testboard, install test drive on the testboard, the upper surface of testboard installs the mount pad, installs the injection pump that posts the thermocouple on the mount pad, the upper surface sliding connection of testboard has the test cover, and the inner wall linear array of test cover distributes has the electric heat radiation board, and the outside of test cover is provided with independent cold cavity, and cold cavity can be linked together with the test cover; the inside of testboard is provided with cooling tank, returns oil pump, oil storage tank and oil feed pump, returns oil pump and can carry the cooled fuel in the cooling tank to the oil storage tank in, the upper surface of testboard is provided with into oil pipe, and the oil feed pump can carry the fuel in the oil storage tan