An engine cold start test device

Abstract

The present invention relates to the technical field of engine test, and discloses an engine cold start test device, including a test bench. The upper surface of the test bench is fixedly connected with a linear motor. The upper surface of the test bench is fixedly connected with a clamping seat. The upper surface of the clamping seat is fixedly connected with a support plate. The top end of the support plate is fixedly connected with a limiting arc plate. In the present invention, the limiting arc plate clamps both sides of the engine, so that the engine cannot vibrate greatly, improving the stability during the engine test. The engine foot pad slides in the clamping seat and generates friction, further reducing the vibration amplitude. The elastic telescopic rod slows down the impact force generated when the engine vibrates, avoiding wear caused by the impact between the engine foot pad and the clamping seat. After the elastic oil bag is squeezed, the lubricating oil inside it is squeezed into the clamping seat through the oil outlet pipe and flows between the clamping seat and the engine foot pad, enabling the engine to avoid vibration more smoothly.

Description

Technical Field

[0001] The present invention relates to the technical field of engine test, and specifically provides an engine cold start test device. Background Art

[0002] Engine cold start refers to starting the engine when the engine water temperature is low, generally when the car has not been started for a long time. And the engine cold start test is to simulate whether the engine can start successfully under the low-temperature environment where the engine has not been started for a long time. In the prior art, it is difficult to effectively limit the position and buffer the vibration of the engine during the experiment on the engine, the test process is unstable, and it is easy to cause the test to be interrupted.

[0003] The patent with the publication number CN216899636U discloses a fresh air test device for cold start of an automobile engine. The patent includes a device box and a sealing strip. A display screen is installed on the side wall of one side of the device box, a control panel is installed on the side wall of one end of the device box, a compressor is installed on the top of the device box, an air outlet pipe penetrating through the inside of the device box is installed at the output end of the compressor, a connecting pipe penetrating through the inside of the device box is installed at the input end of the compressor, an air inlet pipe is installed on the side wall of the device box near the control panel, and the air inlet pipe is communicated with the connecting pipe. An exhaust fan and a filter screen are installed inside the air inlet pipe. The compressor can convert air into cold air and enter the inside of the device box, so as to prevent the temperature inside the device box from rising and affecting the experimental results of engine cold start. Although this patent solves the above problems, there are still problems that the engine cannot be limited in position and buffered during the engine test, the test process is unstable, and it is easy to cause the test to be interrupted. Therefore, an engine cold start test device is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an engine cold start test device aiming at the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: an engine cold start test device, including a test bench, on the upper surface of the test bench is fixedly connected a linear motor, on the upper surface of the test bench is fixedly connected a clamping seat, on the upper surface of the clamping seat is fixedly connected a support plate, at the top of the support plate is fixedly connected a limiting arc plate, the inner surface of the clamping seat is slidably connected with a contact plate, on the side of the contact plate close to the support plate is fixedly connected an elastic telescopic rod, on the side of the contact plate close to the support plate is fixedly connected a contact rod, at the end of the contact rod far from the contact plate is fixedly connected a pressing shaft, on the upper surface of the test bench is fixedly connected a connecting plate, on the side surface of the connecting plate is fixedly connected an elastic oil bag, on the side of the elastic oil bag close to the linear motor is threadedly connected a cover, on the side of the elastic oil bag close to the contact plate is fixedly connected an oil outlet pipe, on the moving end of the linear motor is fixedly connected a moving block, on the upper surface of the moving block is fixedly connected a support rod, at the top of the support rod is fixedly connected a temperature detection probe, below the test bench is provided a rapid cooling device for quickly cooling the engine to facilitate multiple tests, at the rear of the test bench is provided an exhaust gas treatment device for collecting and treating the exhaust gas discharged after the engine cold start, the end of the elastic telescopic rod far from the contact plate is fixedly connected to the support plate, the contact rod slides through the inner surface of the clamping seat and extends out of the outer surface of the clamping seat, the oil outlet pipe penetrates into the inner surface of the clamping seat from the outer surface of the clamping seat, the side of the pressing shaft far from the contact rod is in contact with the outer surface of the elastic oil bag. Insert the engine foot pad into the clamping seat. After the engine cold starts, it is prone to vibration. When the engine vibrates, its two sides are clamped and limited by the support plate and the limiting arc plate. And when the engine produces a small amplitude of vibration, the foot pad slides in the clamping seat. When the engine foot pad slides in the clamping seat, it contacts the contact plate and pushes the contact plate to squeeze the elastic telescopic rod. The elasticity of the elastic telescopic rod slows down the impact force generated when the engine vibrates. When the contact plate is pushed closer to the support plate, it drives the contact rod and the pressing shaft to approach and squeeze the elastic oil bag. After the elastic oil bag is squeezed, the lubricating oil inside it is squeezed into the clamping seat through the oil outlet pipe and flows into the space between the clamping seat and the engine foot pad. Start the linear motor. The linear motor drives the moving block to reciprocate back and forth. The moving block drives the support rod to reciprocate back and forth. The support rod drives the temperature detection probe to reciprocate back and forth. During the movement, the temperature detection probe can detect the temperature of each area of the engine.

[0006] Preferably, the rapid cooling device includes a cooling liquid pool, a liquid outlet pipe, a radiator, a liquid infusion pipe, a liquid inlet pipe, and a feed pipe. The cooling liquid pool is fixedly connected to the lower surface of the test bench, the liquid infusion pipe is fixedly connected to the rear side of the cooling liquid pool, the right side of the radiator is fixedly connected to the left side of the test bench, the rear end of the liquid outlet pipe is fixedly connected to the front side of the radiator, the liquid inlet pipe is fixedly connected to the front side of the cooling liquid pool, and the feed pipe is fixedly connected to the front side of the cooling liquid pool. The rapid cooling device also includes a guide rod, a sliding sleeve, a toggle plate, a connecting horizontal plate, and a connecting vertical plate. The guide rod is fixedly connected to the front and rear sides of the cooling liquid pool, the sliding sleeve is slidably connected to the circumferential surface of the guide rod, the toggle plate is fixedly connected to the circumferential surface of the sliding sleeve, the connecting horizontal plate is fixedly connected to the side of the moving block away from the linear motor, the connecting vertical plate is fixedly connected to the circumferential surface of the connecting horizontal plate, and the front end of the liquid infusion pipe The cooling element is fixedly connected to the rear side of the radiator, a water pump is arranged between the liquid inlet pipe and the cooling liquid pool, and the connecting vertical plate is fixedly connected to the circumferential surface of the sliding sleeve. When the engine has undergone one or more cold start tests, the temperature of the engine rises. At this time, the water pump is started, and the water pump draws the coolant in the cooling liquid pool into the engine to cool the engine. When the engine is cooled, the coolant is discharged into the radiator through the liquid outlet pipe. The radiator dissipates the heat of the heated coolant, and the coolant after the heat is dissipated flows into the cooling liquid pool from the liquid infusion pipe and waits for use. At this time, the cooling additive can be added into the cooling liquid pool from the feeding pipe. When the moving block moves back and forth, it drives the connecting horizontal plate to move back and forth, the connecting horizontal plate drives the connecting vertical plate to move back and forth, the connecting vertical plate drives the sliding sleeve to slide back and forth on the guide rod, and the sliding sleeve drives the toggle plate to move back and forth in the cooling liquid pool and toggle the coolant.

[0007] Preferably, the exhaust gas treatment device includes a gas collection box, an air inlet, an exhaust pipe, and a filter screen. The gas collection box is fixedly connected to the rear side of the coolant pool. The air inlet is opened on the front side of the gas collection box. The exhaust pipe is fixedly connected to the rear side of the inner wall of the gas collection box. The filter screen is fixedly connected to the inner surface of the exhaust pipe. The exhaust gas treatment device further includes a connecting shaft, a sliding rod, a transmission plate, a scraping ring, and a box cover. The connecting shaft is fixedly connected to the circumferential surface of the sliding sleeve. The sliding rod is fixedly connected to the rear side of the connecting shaft. The transmission plate is fixedly connected to the rear end of the sliding rod. The scraping ring is fixedly connected to both sides of the transmission plate. The box cover is hinged to the inner surface of the left side of the gas collection box. The sliding rod slides through the rear side of the inner wall of the coolant pool and extends out of the rear side of the coolant pool. The outer surface of the scraping ring is in contact with the inner wall of the gas collection box. After the engine is cold-started, exhaust gas is generated. The exhaust port of the engine is docked with the air inlet on the gas collection box. The exhaust gas discharged from the engine enters the gas collection box. The exhaust gas flows from the gas collection box towards the exhaust pipe. The pollutant particles in the exhaust gas are blocked by the filter screen in the exhaust pipe and cannot be discharged outside the gas collection box, while the gas is discharged through the exhaust pipe. At the same time, during the reciprocating movement of the sliding sleeve back and forth, the connecting shaft is driven to move back and forth. The connecting shaft drives the sliding rod to slide back and forth. The sliding rod drives the transmission plate to move back and forth. The transmission plate then drives the scraping ring to move back and forth and contact the inner wall of the gas collection box to generate friction. The scraping ring scrapes off the pollutant particles adhering to the inner wall of the gas collection box through friction.

[0008] Adopting the above technical solution, the present invention can bring the following beneficial effects:

[0009] 1. For this engine cold start test device, the limiting arc plates clamp both sides of the engine, preventing the engine from vibrating significantly, thus improving the stability during the engine test. The engine foot pads slide in the card seats and generate friction, further reducing the vibration amplitude. The elastic telescopic rods slow down the impact force generated during engine vibration, avoiding wear caused by the impact between the engine foot pads and the card seats. After being squeezed, the lubricating oil inside the elastic oil bag is squeezed into the card seats through the oil outlet pipe and flows into the space between the card seats and the engine foot pads, enabling the engine to have smoother vibration isolation. The temperature detection probe detects the temperature in various areas of the engine, preventing errors in the test due to the temperature not dropping during consecutive cold start tests of the engine, and improving the test accuracy.

[0010] 2. In the engine cold start test device, the coolant after the heat dissipates flows from the infusion tube into the coolant pool and waits for use, which improves the test efficiency of the cold start. The cooling additive is added into the coolant pool from the feed pipe. The cooling additive and the coolant are mixed to improve the heat dissipation effect of the coolant after use, and at the same time prevent the coolant from generating scale in the coolant pool when used for a long time, which is convenient for the subsequent cleaning of the coolant pool. The toggle plate moves back and forth in the coolant pool and toggle the coolant, which improves the fluidity of the coolant, thereby improving the mixing efficiency of the coolant and the cooling additive, further promoting the heat dissipation effect of the coolant, and facilitating the coolant to cool the engine after cold start multiple times.

[0011] 3. In the engine cold start test device, the exhaust gas discharged by the engine enters the air collecting box to prevent the exhaust gas from being directly discharged into the test site and causing pollution to the test environment. The scraper ring scrapes off the pollutant particles adhering to the inner wall of the air collecting box through friction. At this time, the box cover is opened to facilitate the removal of the pollutant particles in the air collecting box, thereby improving the exhaust gas treatment effect and facilitating the device to collect and treat the exhaust gas discharged by the engine for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the limiting arc plate of the present invention;

[0014] Figure 3 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0015] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure of B;

[0016] Figure 5 It is a schematic diagram of the side and bottom three-dimensional structure of a partial structure of the rapid cooling device of the present invention;

[0017] Figure 6 It is a schematic diagram of the front side cross-sectional three-dimensional structure of a partial structure of the rapid cooling device of the present invention;

[0018] Figure 7 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the exhaust gas treatment device of the present invention.

[0019] In the figure: 1. test bench; 2. linear motor; 3. holder; 31. support plate; 32. limit arc plate; 33. contact plate; 34. elastic telescopic rod; 35. contact rod; 36. extrusion shaft; 37. connecting plate; 38. elastic oil bag; 39. bag cover; 310. oil outlet pipe; 311. moving block; 312. support rod; 313. temperature detection probe; 4. rapid cooling device; 41. cooling liquid pool; 42 , liquid outlet pipe; 43, radiator; 44, liquid infusion pipe; 45, liquid inlet pipe; 46, feed pipe; 47, guide rod; 48, sliding sleeve; 49, toggle plate; 410, connecting horizontal plate; 411, connecting vertical plate; 5, exhaust gas treatment device; 51, air collecting box; 52, air inlet; 53, exhaust pipe; 54, filter; 55, connecting shaft; 56, sliding rod; 57, transmission plate; 58, scraper ring; 59, box cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1-7, an embodiment of the present invention is: An engine cold start test device, including a test bench 1, a linear motor 2 is fixedly connected to the upper surface of the test bench 1, a clamping seat 3 is fixedly connected to the upper surface of the test bench 1, a support plate 31 is fixedly connected to the upper surface of the clamping seat 3, a limiting arc plate 32 is fixedly connected to the top end of the support plate 31, a contact plate 33 is slidably connected to the inner surface of the clamping seat 3, an elastic telescopic rod 34 is fixedly connected to the side of the contact plate 33 close to the support plate 31, a contact rod 35 is fixedly connected to the side of the contact plate 33 close to the support plate 31, an extrusion shaft 36 is fixedly connected to the end of the contact rod 35 away from the contact plate 33, a connecting plate 37 is fixedly connected to the upper surface of the test bench 1, an elastic oil bag 38 is fixedly connected to the side surface of the connecting plate 37, a cover 39 is threadedly connected to the side of the elastic oil bag 38 close to the linear motor 2, an oil outlet pipe 310 is fixedly connected to the side of the elastic oil bag 38 close to the contact plate 33, a moving block 311 is fixedly connected to the moving end of the linear motor 2, a support rod 312 is fixedly connected to the upper surface of the moving block 311, a temperature detection probe 313 is fixedly connected to the top end of the support rod 312. The limiting arc plate 32 clamps both sides of the engine, preventing the engine from vibrating significantly, improving the stability during the engine test. The engine footpad slides in the clamping seat 3 and generates friction, further reducing the vibration amplitude. The elastic telescopic rod 34 slows down the impact force generated when the engine vibrates, preventing wear caused by the impact between the engine footpad and the clamping seat 3. A rapid cooling device 4 for quickly cooling the engine and facilitating multiple tests is provided below the test bench 1. An exhaust gas treatment device 5 for collecting and treating the exhaust gas discharged after the engine cold start is provided at the rear of the test bench 1. The end of the elastic telescopic rod 34 away from the contact plate 33 is fixedly connected to the support plate 31. The contact rod 35 slides through the inner surface of the clamping seat 3 and penetrates out of the outer surface of the clamping seat 3. The oil outlet pipe 310 penetrates into the inner surface of the clamping seat 3 from the outer surface of the clamping seat 3. The side of the extrusion shaft 36 away from the contact rod 35 is in contact with the outer surface of the elastic oil bag 38. After the elastic oil bag 38 is squeezed, the lubricating oil inside it is squeezed into the clamping seat 3 through the oil outlet pipe 310 and flows between the clamping seat 3 and the engine footpad, enabling the engine to avoid vibration more smoothly. The temperature detection probe 313 detects the temperature of each area of the engine, preventing errors in the test caused by the temperature not dropping during consecutive cold start tests of the engine, improving the test accuracy.

[0022] Working principle: Insert the engine foot pad into the holder 3 to fix the engine on the test bench 1 for easy testing. The engine is prone to vibration after cold start. When the engine vibrates, its two sides are clamped and limited by the support plate 31 and the limit arc plate 32, so that the engine cannot vibrate greatly, which improves the stability of the engine during testing. When the engine vibrates slightly, the foot pad slides in the holder 3, and the friction generated by the sliding further reduces the vibration amplitude of the engine. When the engine foot pad slides in the holder 3, it contacts the contact plate 33 and pushes the contact plate 33 to squeeze the elastic telescopic rod 34. The elasticity of the elastic telescopic rod 34 reduces the impact force generated by the engine vibration, avoiding hard contact and wear caused by the collision between the engine foot pad and the holder 3, thereby improving the test safety. The contact plate 33 is pushed When approaching the support plate 31, the resistance rod 35 and the extrusion shaft 36 are driven to approach and squeeze the elastic oil bag 38. After the elastic oil bag 38 is squeezed, the lubricating oil inside the elastic oil bag 38 is squeezed into the base 3 through the oil outlet pipe 310 and flows into the base 3 and the engine foot pad, further reducing the wear of the engine foot pad when sliding, so that the engine can avoid vibration more smoothly, and start the linear motor 2. The linear motor 2 drives the moving block 311 to move back and forth, and the moving block 311 drives the support rod 312 to move back and forth, and the support rod 312 drives the temperature detection probe 313 to move back and forth. The temperature detection probe 313 can detect the temperature of various areas of the engine during the movement, thereby preventing the temperature from not dropping during the continuous cold start test of the engine, resulting in test errors, thereby improving the test accuracy.

[0023] See also Figures 1-7On the basis of the above embodiment, in another embodiment of the present invention, the rapid cooling device 4 includes a cooling liquid pool 41, a liquid outlet pipe 42, a radiator 43, a liquid infusion pipe 44, a liquid inlet pipe 45, and a feed pipe 46. The cooling liquid pool 41 is fixedly connected to the lower surface of the test bench 1, the liquid infusion pipe 44 is fixedly connected to the rear side of the cooling liquid pool 41, the right side of the radiator 43 is fixedly connected to the left side of the test bench 1, the rear end of the liquid outlet pipe 42 is fixedly connected to the front side of the radiator 43, the liquid inlet pipe 45 is fixedly connected to the front side of the cooling liquid pool 41, and the feed pipe 46 is fixedly connected to the front side of the cooling liquid pool 41. The cooling liquid after the heat dissipates flows from the liquid infusion pipe 44 into the cooling liquid pool 41 to wait for use, thereby improving the test efficiency of the cold start. The cooling additive is added to the cooling liquid pool 41 from the feed pipe 46. After the cooling additive and the coolant are mixed, the heat dissipation effect of the used coolant can be improved, and at the same time, it is prevented from generating scale in the cooling liquid pool 41 when the coolant is used for a long time, which is convenient for the subsequent cleaning of the cooling liquid pool 41 is cleaned, the rapid cooling device 4 also includes a guide rod 47, a sliding sleeve 48, a toggle plate 49, a connecting horizontal plate 410, and a connecting vertical plate 411. The guide rod 47 is fixedly connected to the front and rear sides of the coolant pool 41, the sliding sleeve 48 is slidably connected to the circumferential surface of the guide rod 47, the toggle plate 49 is fixedly connected to the circumferential surface of the sliding sleeve 48, the connecting horizontal plate 410 is fixedly connected to the side of the moving block 311 away from the linear motor 2, the connecting vertical plate 411 is fixedly connected to the circumferential surface of the connecting horizontal plate 410, the front end of the infusion tube 44 is fixedly connected to the rear side of the radiator 43, a water pump is provided between the liquid inlet pipe 45 and the coolant pool 41, the connecting vertical plate 411 is fixedly connected to the circumferential surface of the sliding sleeve 48, the toggle plate 49 moves back and forth in the coolant pool 41 and toggles the coolant, thereby improving the fluidity of the coolant, thereby improving the mixing efficiency of the coolant and the cooling additive, further promoting the heat dissipation effect of the coolant, and facilitating the coolant to cool the engine after cold start for multiple times.

[0024] Working principle: After the engine has undergone one or more cold start tests, the temperature of the engine rises. At this time, the water pump is started, and the water pump draws the coolant in the coolant pool 41 into the engine to cool the engine. When the engine is cooled, the coolant is discharged into the radiator 43 through the outlet pipe 42. The radiator 43 dissipates the heat of the heated coolant. The coolant after the heat is dissipated flows from the infusion pipe 44 into the coolant pool 41 to wait for use, thereby improving the test efficiency of the cold start. At this time, the cooling additive can be added to the coolant pool 41 from the feed pipe 46. The mixing of the cooling additive and the coolant can improve the heat dissipation effect of the used coolant and prevent the cold from escaping. When the coolant is used for a long time, scale is generated in the coolant pool 41, which facilitates the subsequent cleaning of the coolant pool 41. When the moving block 311 moves back and forth, it drives the connecting horizontal plate 410 to move back and forth, and the connecting horizontal plate 410 drives the connecting vertical plate 411 to move back and forth. The connecting vertical plate 411 drives the sliding sleeve 48 to slide back and forth on the guide rod 47, and the sliding sleeve 48 drives the toggle plate 49 to move back and forth in the coolant pool 41 and toggle the coolant, thereby improving the fluidity of the coolant, thereby improving the mixing efficiency of the coolant and the cooling additive, and further promoting the heat dissipation effect of the coolant, which is convenient for the coolant to cool the engine after cold start multiple times.

[0025] See also Figures 1-7 On the basis of the above embodiment, in another embodiment of the present invention, the exhaust gas treatment device 5 includes an air collecting box 51, an air inlet 52, an exhaust pipe 53, and a filter 54. The air collecting box 51 is fixedly connected to the rear side of the coolant pool 41, the air inlet 52 is opened on the front side of the air collecting box 51, the exhaust pipe 53 is fixedly connected to the rear side of the inner wall of the air collecting box 51, and the filter 54 is fixedly connected to the inner surface of the exhaust pipe 53. The exhaust gas discharged by the engine enters the air collecting box 51 to prevent the exhaust gas from being directly discharged into the test site and polluting the test environment. The exhaust gas treatment device 5 also includes a connecting shaft 55, a sliding rod 56, a transmission plate 57, a wall scraping ring 58, and a box cover 59. The connecting shaft 55 is fixedly connected to the sliding rod The circumferential surface of the movable sleeve 48, the sliding rod 56 is fixedly connected to the rear side of the connecting shaft 55, the transmission plate 57 is fixedly connected to the rear end of the sliding rod 56, the scraper ring 58 is fixedly connected to both sides of the transmission plate 57, and the box cover 59 is hinged on the inner surface of the left side of the air collecting box 51. The sliding rod 56 slides from the rear side of the inner wall of the coolant pool 41 to penetrate the rear side of the coolant pool 41. The outer surface of the scraper ring 58 and the inner wall of the air collecting box 51 are in contact with each other. The scraper ring 58 scrapes off the pollutant particles adhering to the inner wall of the air collecting box 51 through friction. At this time, the box cover 59 is opened to facilitate the removal of the pollutant particles in the air collecting box 51, thereby improving the exhaust gas treatment effect and facilitating the device to collect and treat the exhaust gas emitted by the engine for a long time.

[0026] Working principle: After the engine is cold-started, exhaust gas is generated. The exhaust port of the engine is docked with the intake port 52 on the gas collecting box 51. The exhaust gas discharged from the engine enters the gas collecting box 51, avoiding direct discharge of the exhaust gas into the test site and causing pollution to the test environment. The exhaust gas flows from the gas collecting box 51 towards the exhaust pipe 53. The pollutant particles in the exhaust gas are blocked by the filter screen 54 in the exhaust pipe 53 and cannot be discharged outside the gas collecting box 51, while the gas is discharged through the exhaust pipe 53. At the same time, during the reciprocating movement of the sliding sleeve 48 back and forth, the connecting shaft 55 is driven to move back and forth. The connecting shaft 55 drives the sliding rod 56 to slide back and forth. The sliding rod 56 drives the transmission plate 57 to move back and forth. The transmission plate 57 then drives the scraping ring 58 to move back and forth and contact the inner wall of the gas collecting box 51 to generate friction. The scraping ring 58 scrapes off the pollutant particles adhering to the inner wall of the gas collecting box 51 through friction. At this time, the box cover 59 is opened to facilitate the removal of the pollutant particles in the gas collecting box 51, improving the exhaust gas treatment effect and facilitating the long-term collection and treatment of the exhaust gas discharged by the engine by the device.

[0027] The present invention provides an engine cold start test device. There are many methods and ways to specifically implement this technical solution. The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by existing technologies.

Claims

1. An engine cold start test device, comprising a test bench (1), characterized in that: The upper surface of the test bench (1) is fixedly connected with a linear motor (2). The upper surface of the test bench (1) is fixedly connected with a clamping seat (3). The upper surface of the clamping seat (3) is fixedly connected with a support plate (31). The top end of the support plate (31) is fixedly connected with a limiting arc plate (32). The inner surface of the clamping seat (3) is slidably connected with a contact plate (33). One side of the contact plate (33) close to the support plate (31) is fixedly connected with an elastic telescopic rod (34). One side of the contact plate (33) close to the support plate (31) is fixedly connected with a contact rod (35). One end of the contact rod (35) far from the contact plate (33) is fixedly connected with a pressing shaft (36). The upper surface of the test bench (1) is fixedly connected with a connecting plate (37). The side surface of the connecting plate (37) is fixedly connected with an elastic oil bag (38). One side of the elastic oil bag (38) close to the linear motor (2) is threadedly connected with a cover (39). One side of the elastic oil bag (38) close to the contact plate (33) is fixedly connected with an oil outlet pipe (310). The moving end of the linear motor (2) is fixedly connected with a moving block (311). The upper surface of the moving block (311) is fixedly connected with a support rod (312). The top end of the support rod (312) is fixedly connected with a temperature detection probe (313); A quick cooling device (4) for quickly cooling the engine and facilitating multiple tests is arranged below the test bench (1). An exhaust gas treatment device (5) for collecting and treating the exhaust gas discharged after the cold start of the engine is arranged at the rear side of the test bench (1); One end of the elastic telescopic rod (34) far from the contact plate (33) is fixedly connected with the support plate (31). The contact rod (35) slides through the inner surface of the clamping seat (3) and penetrates out of the outer surface of the clamping seat (3). The oil outlet pipe (310) penetrates from the outer surface of the clamping seat (3) into the inner surface of the clamping seat (3). One side of the pressing shaft (36) far from the contact rod (35) is in contact with the outer surface of the elastic oil bag (38); The quick cooling device (4) includes a coolant pool (41), a liquid outlet pipe (42), a radiator (43), a liquid infusion pipe (44), a liquid inlet pipe (45), and a feed pipe (46). The coolant pool (41) is fixedly connected to the lower surface of the test bench (1). The liquid infusion pipe (44) is fixedly connected to the rear side of the coolant pool (41). The right side of the radiator (43) is fixedly connected to the left side of the test bench (1). The rear end of the liquid outlet pipe (42) is fixedly connected to the front side of the radiator (43). The liquid inlet pipe (45) is fixedly connected to the front side of the coolant pool (41). The feed pipe (46) is fixedly connected to the front side of the coolant pool (41); The rapid cooling device (4) further includes a guide rod (47), a sliding sleeve (48), a toggle plate (49), a connecting cross plate (410), and a connecting vertical plate (411). The guide rod (47) is fixedly connected to the front and rear sides of the coolant pool (41). The sliding sleeve (48) is slidably connected to the circumferential surface of the guide rod (47). The toggle plate (49) is fixedly connected to the circumferential surface of the sliding sleeve (48). The connecting cross plate (410) is fixedly connected to the side of the moving block (311) away from the linear motor (2). The connecting vertical plate (411) is fixedly connected to the circumferential surface of the connecting cross plate (410).

2. The engine cold start test device according to claim 1, characterized in that: The front end of the infusion tube (44) is fixedly connected to the rear side surface of the radiator (43). A water pump is provided between the liquid inlet tube (45) and the coolant pool (41). The connecting vertical plate (411) is fixedly connected to the circumferential surface of the sliding sleeve (48).

3. The engine cold start test device according to claim 1, characterized in that: The waste gas treatment device (5) includes a gas collecting box (51), an air inlet (52), an exhaust pipe (53), and a filter screen (54). The gas collecting box (51) is fixedly connected to the rear side surface of the coolant pool (41). The air inlet (52) is opened on the front side surface of the gas collecting box (51). The exhaust pipe (53) is fixedly connected to the rear side surface of the inner wall of the gas collecting box (51). The filter screen (54) is fixedly connected to the inner surface of the exhaust pipe (53).

4. An engine cold start test device according to claim 3, characterized in that: The waste gas treatment device (5) further includes a connecting shaft (55), a sliding rod (56), a transmission plate (57), a scraping ring (58), and a box cover (59). The connecting shaft (55) is fixedly connected to the circumferential surface of the sliding sleeve (48). The sliding rod (56) is fixedly connected to the rear side surface of the connecting shaft (55). The transmission plate (57) is fixedly connected to the rear end of the sliding rod (56). The scraping ring (58) is fixedly connected to both sides of the transmission plate (57). The box cover (59) is hinged to the inner surface of the left side of the gas collecting box (51).

5. The engine cold start test device according to claim 4, characterized in that: The sliding rod (56) slides through the rear side surface of the inner wall of the coolant pool (41) and extends out of the rear side surface of the coolant pool (41). The outer surface of the scraping ring (58) is in contact with the inner wall of the gas collecting box (51).

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