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Method for testing automotive transmission system resistance distribution

A resistance distribution and test method technology, which is applied in vehicle testing, machine gear/transmission mechanism testing, machine/structural component testing, etc., can solve the problem of low controllability and repeatability, and the resistance of the transmission system is susceptible to uncertain factors Influence, failure to obtain the resistance distribution and change rules of the various components of the drive train, etc., to achieve the effect of high controllability and repeatability, high degree of certainty, and prevent the influence of uncertain factors

Inactive Publication Date: 2014-04-16
WUHAN UNIV OF TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to propose a test method for the resistance distribution of the automobile transmission system, which avoids the measurement of the transmission system resistance in the prior art from being easily affected by uncertain factors, low controllability and repeatability, and failure to obtain the resistance of each component of the transmission system Distribution and change law and other issues

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  • Method for testing automotive transmission system resistance distribution
  • Method for testing automotive transmission system resistance distribution

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Embodiment Construction

[0027] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] The resistance of the automobile transmission system will be affected by many factors, and the resistance of each component of the transmission system and its changing law are not the same. In order to accurately test the distribution of the resistance of the vehicle drive train, the present invention sets the test of a single variable control test with multiple vehicle states, and strictly controls the factors that affect the test results, such as maintaining a constant temperature and humidity laboratory environment during the test. , using the same kind of lubricating oil for the transmission and rear axle, and keeping the tire pressure constant. The test fully considers the impact of different running-in mileages on the performance of the drive train, and chooses to test the new car and the...

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Abstract

The invention provides a method for testing automotive transmission system resistance distribution. In the testing method, multiple vehicle states are subjected to a single variable control test performed based on a rotary drum test stand, the automotive transmission system resistance is tested by adopting a single-point speed steady state testing method and a sliding testing method based on a rotary drum reverse-dragging method, the testing is performed in modes of a new vehicle, running-in mileage 300km, running-in mileage 1000km and running-in mileage 2000km respectively by considering the influence of different automotive running-in mileages to the transmission system performance, a cold state and a hot state are respectively tested according to the starting work condition and normal running work condition in the actual automotive running process, and finished automobile testing, brake-dismounted brake shoe testing, disconnected transmission shaft testing and testing of a driving gear with no main speed reducer are respectively performed by adopting a step-by-step dismounting method. The testing method is safe, controllable and high in repeatability, the influence of uncertain factors is small, and detected test data are accurate and comprehensive.

Description

technical field [0001] The invention relates to the field of automobile performance testing, in particular to a test method for resistance distribution of an automobile transmission system. Background technique [0002] When the transmission system transmits the driving force output by the engine to the drive wheels, it needs to overcome the resistance of the various components of the transmission system, so that the final power transmitted to the wheels will be less than the power output by the engine to the transmission system. Reducing the resistance of the transmission system can not only improve the performance of the transmission system, but also have a great impact on the vehicle's power, fuel economy and exhaust emissions. [0003] The current automobile industry usually adopts the automobile sliding method of road test to obtain the automobile sliding distance, and uses it as the standard for evaluating the resistance of the automobile drive train. The method of me...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01M17/007
Inventor 莫易敏章德平常淯舟刘卫
Owner WUHAN UNIV OF TECH
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