Bench test method for automatic locking and unlocking control of special vehicle comprehensive transmission device

A transmission device and bench test technology, applied in vehicle testing, measuring device, mechanical component testing, etc., can solve problems such as the inability to test the automatic closing and unlocking function, and achieve the effect of good real-time performance and low cost

Active Publication Date: 2021-03-16
CHINA NORTH VEHICLE RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to carry out the bench test of the automatic closing and unlocking of the integrated transmission device in the absence of a real vehicle environment without adding additional equipm

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  • Bench test method for automatic locking and unlocking control of special vehicle comprehensive transmission device

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Embodiment Construction

[0024] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] During the bench test of the integrated transmission device, the test bench motor is used to simulate the power input for the bench test. The bench test lacks the vehicle bus signal, and the electronic control unit of the integrated transmission device cannot receive engine-related parameters. Since the bus is in the disconnected state, the parameters on the bus received by the transmission electronic control unit (including three parameters including engine speed, throttle opening, and engine water temperature) are all default values. When the rotational speed of the turbine shaft is greater than 500rpm and the operating oil pressure is greater than 1Mpa, it is judged that the integrated transmission device is w...

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Abstract

The invention belongs to the technical field of special vehicles, and particularly relates to a bench test method for automatic locking and unlocking control of a special vehicle comprehensive transmission device. The method comprises the following steps: under the condition that a bench test cannot provide real vehicle bus information, reading a bus signal and specific parameters of the comprehensive transmission device; judging whether the comprehensive transmission device works under the working condition of the bench or not; under the bench test working condition, a fan is set to work under the mechanical working condition, the rotating speed of the fan is collected, the rotating speed of the engine is obtained according to the rotating speed ratio of the fan to the engine, a hydraulictorque converter is controlled to be automatically locked and unlocked through an engine rotating speed signal, so that the automatic locking and unlocking function test of the hydraulic torque converter under the bench working condition is achieved. According to the method, the automatic locking and unlocking bench test of the comprehensive transmission device can be carried out under the condition of lack of a real vehicle environment without adding extra equipment and operation, the problem that the automatic locking and unlocking function cannot be tested in the bench test is solved, andthe test method has the characteristics of simplicity, reliability, good real-time performance, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of special vehicles, and in particular relates to a bench test method for automatic closing and unlocking control of a comprehensive transmission device of a special vehicle. Background technique [0002] The integrated transmission device is the core component of the special vehicle chassis transmission system, and its function and reliability directly affect the operation of the vehicle. Therefore, it is very necessary and important to conduct a sufficient bench test before the actual vehicle test. However, due to the lack of a real vehicle environment in the bench test, some functions cannot be fully verified by the test. [0003] Among them, the automatic closing and unlocking of the hydraulic torque converter is a function of the integrated transmission device, which can control the vehicle to drive in hydraulic or mechanical conditions through parameters. This function is limited due to the lack of eng...

Claims

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Application Information

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IPC IPC(8): G01M13/025G01M17/007
CPCG01M13/025G01M17/007
Inventor 郭书彪段三星韩博师俊玲张鑫成城王鲁华薛阳宏
Owner CHINA NORTH VEHICLE RES INST
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