Method for testing transmission efficiency of automobile transmission system

A transmission system and transmission efficiency technology, applied in the automotive field, can solve problems such as inability to accurately reflect the transmission status of the transmission system, and achieve the effect of accurate transmission efficiency

Inactive Publication Date: 2017-12-15
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In the specific implementation process, we found that: the transmission efficiency of the automobile transmission system obtained by the above two methods is quite different from the transmission efficiency of the real use

Method used

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  • Method for testing transmission efficiency of automobile transmission system
  • Method for testing transmission efficiency of automobile transmission system

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Embodiment Construction

[0047] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0048] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0049] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0050] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[00...

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Abstract

The embodiment of the invention discloses a method for testing the transmission efficiency of an automobile transmission system. After the trial production of a sample vehicle is completed, the sliding test of the sample vehicle is carried out, real sliding resistance is obtained, then according to a stress condition of wheels, a calculation formula of the transmission efficiency of the transmission system is obtained, the acceleration test of the sample vehicle is carried out, test data of a vehicle speed, a longitudinal acceleration, an engine speed, an output torque of an engine, a turbine speed, a transmission speed ratio and the like of the vehicle in an acceleration condition are collected, the transmission efficiency of the transmission system is calculated through the collected test data, and the test of the transmission efficiency of the transmission system is realized. By using the method provided by the embodiment of the invention, the more accurate transmission efficiency of the transmission system more close to a real usage condition can be obtained, a basis is provided for evaluating the transmission system, and a data support is provided for subsequent vehicle power simulation analysis and system matching optimization further.

Description

technical field [0001] The invention belongs to the technical field of automobiles, in particular to a method for testing transmission efficiency of an automobile transmission system. Background technique [0002] The power transmission device between the automobile engine and the driving wheels constitutes the transmission system of the automobile. For the two-wheel drive automatic transmission model, the transmission system is mainly composed of hydraulic torque converter, automatic transmission, final drive, differential and drive shaft and other components. Among them, in the power loss of the entire transmission system, the automatic transmission and the final drive account for a larger proportion, and the other components account for a smaller proportion. [0003] The power loss of the transmission system mainly includes two categories: mechanical loss and hydraulic loss. Among them, mechanical loss refers to the friction loss of gear transmission pairs, bearings, oil ...

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Application Information

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IPC IPC(8): G01M13/02
Inventor 董长静
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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