Engine power takeoff test bench

Abstract

The utility model provides an engine power takeoff test bed which comprises a power takeoff, a hydraulic pump, a hydraulic oil tank, a radiator and a hydraulic oil filter, the top of the hydraulic oil tank is provided with an oil return port and an oil outlet, the oil outlet and the oil return port of the hydraulic oil tank are both provided with stop valves, and the radiator and the hydraulic oil filter are both arranged at the top of the hydraulic oil tank. The driving end of the hydraulic pump is connected with the output end of the power takeoff through a coupler, an oil inlet of the hydraulic pump is connected with an oil outlet of the hydraulic oil tank, an oil outlet of the hydraulic pump is sequentially connected with the radiator and the hydraulic oil filter, an oil outlet of the hydraulic oil filter is connected with an oil return opening of the hydraulic oil tank, and the oil outlet of the hydraulic pump is provided with a pressure regulating valve. The pressure adjusting device is used for adjusting the pressure value of the output hydraulic oil so as to meet the output power to be tested by the power takeoff. According to the test bench, independent testing of the power takeoff can be realized under the condition that the engine bench is not transformed, the universality is high, the design is simple, and the cost of bench transformation is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile product development engine design and testing, in particular to an engine power take-off test bench. Background Art

[0002] Power take-off products are widely used in the field of automobile transmission today. The main function of the engine power take-off is to output the engine power to equipment other than the vehicle driving system to drive additional mechanical devices. In order to ensure the reliability of the engine power take-off, sufficient bench tests are required during the development stage. Conventional engine bench dynamometers are directly connected to the engine flywheel to test the entire engine, and there is no separate interface to connect to the power take-off for testing, which brings great inconvenience to the bench test of the power take-off. Chinese utility model CN ​​213842607 U provides a test bench and a test bench system for a transfer case. The test bench includes: a hydraulic loading device, the hydraulic loading device includes: an oil tank, a loading pump, the inlet and outlet of the loading pump are connected to the oil tank through a transmission pipeline; a throttle valve, the throttle valve is arranged on the transmission pipeline between the loading pump outlet and the oil tank; a first connecting part, arranged at the driving end of the loading pump, a power input device; the power input device is a hydraulic driver, a motor or an engine, and a second connecting part is arranged at the output end of the power input device. Various impurities may be mixed into the hydraulic oil during the circulation process of the above device, affecting the safety during the test. Summary of the invention

[0003] The technical problem solved by the utility model is that a conventional engine bench cannot be connected to a power take-off for testing.

[0004] The utility model provides an engine power take-off test bench, comprising a power take-off, a hydraulic pump, a hydraulic oil tank, a radiator, and a hydraulic oil filter. Hydraulic oil is stored in the hydraulic oil tank. An oil return port and an oil outlet are provided on the top of the hydraulic oil tank. Both the oil outlet and the oil return port of the hydraulic oil tank are provided with stop valves. The radiator and the hydraulic oil filter are both arranged on the top of the hydraulic oil tank. The driving end of the hydraulic pump is connected to the output end of the power take-off through a coupling. The oil inlet of the hydraulic pump is connected to the oil outlet of the hydraulic oil tank. The oil outlet of the hydraulic pump is connected to the radiator and the hydraulic oil filter in sequence. The oil outlet of the hydraulic oil filter is connected to the oil return port of the hydraulic oil tank. A pressure regulating valve is provided on the oil outlet of the hydraulic pump for adjusting the pressure value of the output hydraulic oil to meet the output power to be tested of the power take-off.

[0005] Furthermore, the hydraulic pump is used to suck oil from the hydraulic oil tank to form pressure oil discharge, and the discharged pressure oil returns to the hydraulic oil tank and continues to circulate, thereby continuously testing the power take-off.

[0006] Furthermore, the pressure regulating valve is provided with a pressure gauge for reading the pressure value of the output hydraulic oil.

[0007] Furthermore, the radiator is air-cooled or water-cooled to reduce the temperature of the hydraulic oil.

[0008] Furthermore, the hydraulic oil filter is used to filter impurities in the hydraulic oil to ensure good quality of the hydraulic oil.

[0009] Furthermore, a hydraulic oil window and a scale are provided on the front of the hydraulic oil tank.

[0010] The utility model has the following beneficial effects: (1) The engine power take-off test bench of the utility model drives the hydraulic pump through the power take-off to pump the hydraulic oil from the hydraulic oil tank to the pressure regulating valve through the hydraulic pipe. The pressure regulating valve increases the pressure in the tooling system by adjusting the opening, and converts mechanical energy into heat energy and kinetic energy according to the law of conservation of energy. The hydraulic oil is cooled by the radiator in the whole tooling system and then returns to the hydraulic oil tank after the hydraulic oil filter. It works continuously according to the above cycle, and can realize continuous bench testing and assessment of the engine power take-off without modifying the engine bench. (2) The engine power take-off test bench is highly maneuverable and is an independent and movable tooling. It is highly versatile. When matching engine power take-offs with different interfaces, only the hydraulic pump that matches the port needs to be replaced. It has strong applicability. By increasing the system pressure through the pressure regulating valve, mechanical energy can be converted into heat energy and kinetic energy to achieve energy transfer. There is no need to add other forms of equipment such as hydraulic motors to consume the energy output by the power take-off. It is economical. The manufacturing cost of this tooling is low, and there is no need to modify the engine bench, which effectively saves the equipment procurement cost of the engine bench test room. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , Schematic diagram of the engine power take-off test bench of the utility model.

[0012] Figure 2 , a top view of the engine power take-off test bench of the utility model.

[0013] Figure 3 , Schematic diagram of the engine power take-off test bench of the utility model. DETAILED DESCRIPTION

[0014] In order to clearly illustrate the technical features of this solution, the solution is described below through specific implementation methods and in combination with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] like Figure 1-3 As shown, an engine power take-off test bench includes a power take-off 1, a hydraulic pump 2, a hydraulic oil tank 5, a radiator 3, and a hydraulic oil filter 4.

[0017] Hydraulic oil is stored in the hydraulic oil tank 5, and a hydraulic oil window 8 and a scale are provided on the front of the hydraulic oil tank 5. An oil return port and an oil outlet are provided on the top of the hydraulic oil tank 5, and both the oil outlet and the oil return port of the hydraulic oil tank 5 are provided with a stop valve 7. The radiator 3 and the hydraulic oil filter 4 are both arranged on the top of the hydraulic oil tank 5. The radiator 3 is air-cooled or water-cooled to reduce the temperature of the hydraulic oil. The hydraulic oil filter 4 is used to filter impurities in the hydraulic oil to ensure the good quality of the hydraulic oil and improve the safety of the test.

[0018] The driving end of the hydraulic pump 2 is connected to the output end of the power take-off 1 through a coupling, the oil inlet of the hydraulic pump 2 is connected to the oil outlet of the hydraulic oil tank 5, the oil outlet of the hydraulic pump 2 is connected to the radiator 3 and the hydraulic oil filter 4 in sequence, the oil outlet of the hydraulic oil filter 4 is connected to the oil return port of the hydraulic oil tank 5, the oil outlet of the hydraulic pump 2 is provided with a pressure regulating valve 6, which is used to adjust the pressure value of the output hydraulic oil to meet the output power to be tested by the power take-off 1, and the pressure regulating valve 6 is provided with a pressure gauge 9, which is used to read the pressure value of the output hydraulic oil. The hydraulic pump 2 is used to suck oil from the hydraulic oil tank 5 to form a pressure oil discharge, and the discharged pressure oil returns to the hydraulic oil tank 5 to continue to circulate, and the power take-off 1 is continuously tested.

[0019] The power take-off 1 drives the hydraulic pump 2 to pump the hydraulic oil from the hydraulic oil tank to the pressure regulating valve through the hydraulic pipe. The pressure regulating valve 6 increases the pressure in the tooling system by adjusting the opening. The pressure value can be read through the pressure gauge. According to the law of conservation of energy, the mechanical energy is converted into thermal energy and kinetic energy. The hydraulic oil is cooled by the radiator 3 in the whole tooling system and then returns to the hydraulic oil tank after passing through the hydraulic oil filter 4. It works continuously according to the above cycle, and can realize continuous bench testing and assessment of the engine power take-off without modifying the engine bench.

[0020] The engine power take-off test bench of the utility model has high mobility and is an independently movable tool; it has high versatility, and when matching an engine power take-off 1 with different interfaces, it is only necessary to replace the hydraulic pump 2 that matches the port; it has strong applicability, and mechanical energy can be converted into heat energy and kinetic energy to realize energy transfer by increasing the system pressure through the pressure regulating valve 6, and there is no need to add other forms of equipment such as hydraulic motors to consume the energy output by the power take-off 1; it has good economy, the manufacturing cost of the tool is low, and there is no need to modify the engine bench, which effectively saves the equipment procurement cost of the engine bench test room.

[0021] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0022] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An engine power take-off test bench, characterized in that: Including power take-off, hydraulic pump, hydraulic oil tank, radiator, hydraulic oil filter, Hydraulic oil is stored in the hydraulic oil tank, and an oil return port and an oil outlet are arranged on the top of the hydraulic oil tank. Both the oil outlet and the oil return port of the hydraulic oil tank are provided with a stop valve. The radiator and the hydraulic oil filter are both arranged on the top of the hydraulic oil tank. The hydraulic pump driving end is connected to the output end of the power take-off through a coupling, the hydraulic pump oil inlet is connected to the hydraulic oil tank oil outlet, the hydraulic pump oil outlet is connected to the radiator and the hydraulic oil filter in sequence, the hydraulic oil filter oil outlet is connected to the hydraulic oil tank oil return port, and the hydraulic pump oil outlet is provided with a pressure regulating valve for adjusting the pressure value of the output hydraulic oil to meet the output power to be tested of the power take-off.

2. The engine power take-off test bench according to claim 1, characterized in that: The hydraulic pump is used to suck oil from the hydraulic oil tank to form pressure oil for discharge, and the discharged pressure oil returns to the hydraulic oil tank and continues to circulate, thereby continuously testing the power take-off.

3. The engine power take-off test bench according to claim 1, characterized in that: The pressure regulating valve is provided with a pressure gauge for reading the pressure value of the output hydraulic oil.

4. The engine power take-off test bench according to claim 1, characterized in that: The radiator is air-cooled or water-cooled and is used to reduce the temperature of the hydraulic oil.

5. The engine power take-off test bench according to claim 1, characterized in that: The hydraulic oil filter is used to filter impurities in the hydraulic oil to ensure that the hydraulic oil has good quality.

6. The engine power take-off test bench according to claim 1, characterized in that: A hydraulic oil window and a scale are arranged on the front of the hydraulic oil tank.

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