Test evaluation device for accelerating engine wear

Abstract

The utility model relates to a test evaluation device for accelerating engine wear. The device comprises a transition block 1, an engine oil outlet pipe 2, a buffer tank 3, an engine oil return pipe 4, an engine oil drainage pipe 5, an oil drainage control valve 6, a buffer tank support 7 and an oil drainage control valve support 8. The transition block 1 is connected with an engine through a fixing screw; one end of the engine oil outlet pipe 2 is connected with the transition block 1, and the other end is connected with the buffer tank 3; one end of the engine oil return pipe 4 is connected with the buffer tank 3, and the other side is connected with the transition block 1; the device is installed on an engine oil return pipe 4. One side of the engine oil drainage pipe 5 is connected with the buffer tank 3, and the other side is connected with an engine oil pan; the buffer tank 3 is fixed on the buffer tank bracket 7; and the oil drainage control valve 6 is fixed on the oil drainage control valve bracket 8. The connecting device is simple in structure, and all the parts can be connected and fixed through the screws, the double nipples and the hoops. In the use process, the oil drainage control valve 6 can be opened or closed at regular time by matching with an engine bench test control system.

Description

Technical Field

[0001] The utility model belongs to an engine test auxiliary device, in particular to a test auxiliary device for evaluating the anti-wear performance of engine oil. Background Art

[0002] Hybrid vehicles (HEVs) using proprietary technologies are developing rapidly in my country. Traditional fuel vehicles are being gradually replaced by PHEVs and HEVs powered by highly efficient, specialized hybrid engines. Hybrid vehicles differ from traditional fuel vehicles in their driving characteristics. Frequent starts and stops are a typical operating condition for HEVs, with a lifetime of 200,000 to 300,000 starts and stops, approximately three times the number of traditional fuel vehicles. During the startup phase, the oil film is not fully established, resulting in bearing wear, a common concern in the industry. Currently, there are no engine bench test methods or standards for evaluating the resistance of engine oils to frequent starts and stops.

[0003] When developing engine bench tests, in addition to focusing on the relevance to actual driving, the economic efficiency of the test must also be considered. For example, the test time should not be too long, generally within the range of 100 to 300 hours. When developing a test method for frequent engine start-stop wear to evaluate engine oil performance, it is necessary to reproduce the frequent start-stop conditions of hybrid vehicles on the engine bench, that is, it is necessary to frequently start and stop the engine on the bench. However, if the engine lubrication system is not modified, a very long test time will be required to achieve a certain degree of severity, which does not meet the economic requirements of the bench test. For this reason, it is necessary to design a test auxiliary device that accelerates the frequent start-stop wear of the engine. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a test auxiliary device for accelerating engine wear, which can increase the test severity under the condition of frequent engine starts, shorten the test time, and improve the economy of the test.

[0005] The utility model provides a test auxiliary device for accelerating engine wear, comprising: a transition block 1, an engine oil outlet pipe 2, a buffer tank 3, an engine oil return pipe 4, an engine oil drain pipe 5, an oil drain control valve 6, a buffer tank bracket 7 and an oil drain control valve bracket 8.

[0006] The transition block 1 is fixed on the side wall of the engine. Two through holes are processed on the transition block 1 and are respectively connected to the oil outlet and oil return port of the engine.

[0007] The buffer tank 3 is a closed hollow tank body with a hole machined on the upper and lower parts of one side and a hole machined on the bottom. The buffer tank 3 is fixed on the buffer tank bracket 7.

[0008] One end of the engine oil outlet pipe 2 is connected to the engine oil outlet of the transition block 1 , and the other end is connected to the side lower inlet of the buffer tank 3 .

[0009] One end of the engine oil return pipe 4 is connected to the upper outlet of the buffer tank 3 , and the other end is connected to the engine oil return port of the transition block 1 .

[0010] One end of the engine oil drain pipe 5 is connected to the oil unloading port at the bottom of the buffer tank 3, and the other end is connected to the engine oil pan.

[0011] The oil drain control valve 6 is installed on the pipeline of the engine oil drain pipe 5 and fixed on the oil drain control valve bracket 8. The various components in the test auxiliary device can be connected or fixed by screws, threaded joints, and clamps.

[0012] Outstanding effects of this utility model:

[0013] This new test method solves the problem of insufficient severity in conventional engine bench tests. It utilizes a buffer tank to extend the time it takes for the engine's main oil channel pressure to build up, reducing engine wear, thereby shortening the test time and improving the test's economic efficiency. The present invention has a simple structure, is easy to install, has a low manufacturing cost, and delivers excellent results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a test auxiliary device for accelerating engine wear.

[0015] Figure 1 1-transition block, 2-engine oil outlet pipe, 3-buffer tank, 4-engine oil return pipe, 5-engine oil drain pipe, 6-oil drain control valve, 7-buffer tank bracket, 8-oil drain control valve bracket, 9-engine oil pan, 10-engine. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] See also Figure 1 A test auxiliary device for accelerating engine wear includes a transition block 1, an engine oil outlet pipe 2, a buffer tank 3, an engine oil return pipe 4, an engine oil drain pipe 5, an oil drain control valve 6, a buffer tank bracket 7 and an oil drain control valve bracket 8.

[0018] The transition block 1 is connected to the engine by fixing screws; one end of the engine oil outlet pipe 2 is connected to the transition block 1, and the other end is connected to the buffer tank 3; one end of the engine oil return pipe 4 is connected to the buffer tank 3, and the other end is connected to the transition block 1; one end of the engine oil drain pipe 5 is connected to the buffer tank 3, and the other end is connected to the engine oil pan; the buffer tank 3 is fixed on the buffer tank bracket 7; the oil drain control valve 6 is installed on the pipeline of the engine oil drain pipe 5 and fixed on the oil drain control valve bracket 8.

[0019] The use process of this utility model is as follows:

[0020] (1) The frequent start-stop test is designed to execute a cycle of repeated engine start-up and shutdown;

[0021] (2) Before the engine is started, the oil unloading control valve is in the open state, and the buffer tank 3 is in the empty tank state;

[0022] (3) When the engine is about to start, the oil drain control valve 6 is closed;

[0023] (4) When the engine is started, the engine oil pump starts working to pump out the oil in the oil pan. The pumped oil passes through the transition block 1 and the engine oil outlet pipe 2 and enters the buffer tank 3 from the lower inlet on the side of the buffer tank 3;

[0024] (5) As the engine starts and the speed increases, the oil in the buffer tank 3 is filled and flows out from the outlet on the upper side, passes through the engine oil return pipe 4 and enters the transition block 1, and then enters the engine main oil channel to supply oil lubrication to various parts of the engine. At this time, the pressure in the engine main oil channel begins to build up, and the lubrication state of the engine main bearing gradually changes from boundary lubrication to fluid lubrication;

[0025] (6) When the engine is shut down, the oil drain control valve 6 opens, and the oil in the buffer tank 3 flows from the bottom of the tank through the engine oil drain pipe 5 back to the engine oil pan, so that the buffer tank 3 is emptied;

[0026] (7) Repeat steps (2) to (6) until the test is completed.

[0027] Due to the presence of the buffer tank 3, the time for building up the pressure in the main oil channel of the engine is delayed, thereby increasing the severity of the test.

[0028] A person skilled in the art may understand the spirit of the present invention based on the above specific implementation methods and make different extensions and changes, but as long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

[0029] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0030] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A test and evaluation device for accelerating engine wear, comprising an engine oil outlet pipe (2), a buffer tank (3), an engine oil return pipe (4), an engine oil drain pipe (5), and an oil drain control valve (6), wherein: The engine oil outlet pipe (2) and the engine oil return pipe (4) are respectively connected to the oil outlet and the oil return of the engine; holes are provided at the upper and lower parts of one side of the buffer tank (3), respectively connected to the engine oil return pipe (4) and the engine oil outlet pipe (2); a hole is provided at the bottom of the buffer tank (3) and connected to the engine oil drain pipe (5); the other end of the engine oil drain pipe (5) is connected to the engine oil sump; and an oil drain control valve (6) is installed on the pipeline of the engine oil drain pipe (5).

2. The device according to claim 1, wherein The buffer tank (3) is a sealed hollow tank body, which is fixed on the buffer tank bracket (7).

3. The device according to claim 1, wherein A transition block (1) fixed to the side wall of the engine is also provided, and a through hole is provided on the upper and lower parts of the transition block (1), so that one side of the transition block (1) is respectively connected to the oil outlet and oil return port of the engine, and the other side is respectively connected to the engine oil outlet pipe (2) and the engine oil return pipe (4).

4. The device according to claim 1, wherein The oil leakage control valve (6) is fixed on the oil leakage control valve bracket (8).

5. The device according to any one of claims 1 to 4, wherein the components are connected by screws, threaded joints, or clamps.

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