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Driving load fatigue representing and testing method for transmission system of automobile

A technology of transmission system and test method, which is applied in the field of performance test of automobile transmission system

Inactive Publication Date: 2015-01-21
CHONGQING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no test device and method for simultaneously simulating and reproducing the torque of the vehicle transmission system and the dynamic load of the wheel up and down at home and abroad.

Method used

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  • Driving load fatigue representing and testing method for transmission system of automobile
  • Driving load fatigue representing and testing method for transmission system of automobile
  • Driving load fatigue representing and testing method for transmission system of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0052] The driving load fatigue reproduction test method of the automobile transmission system adopts a driving load fatigue reproduction test system of the automobile transmission system in the method. Such as figure 1 , 2 As shown, the vehicle transmission system driving load fatigue reproduction test system includes an installation foundation 1, a transmission support 9, a support platform 12, a support platform column 13, a torque sensor base 14, a torsional vibration exciter base 15, a first straight line Vibrator 2, second linear vibrator 17, first fixed support 4, second fixed support 18, acceleration sensor 5, torsional vibrator 7, torque sensor 8 and computer control system. The first linear vibrator 2 and the second linear vibrator 17 are vertically arranged on the installation foundation 1 for simulating the up and down motion of t...

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Abstract

The invention discloses a driving load fatigue representing and testing method for a transmission system of an automobile, comprising the following steps of: (1) acquiring a transmission input torque, a driving wheel axle vibration acceleration and a transmission gear signal on a test field; (2) acquiring expected response signals when the automobile actually runs at all gears; (3) mounting a transmission system and calculating a frequency response function of the system; (4) calculating initial driving signals of a linear vibration exciter and a torque vibration exciter; (5) calculating a driving signal correction corresponding to an error, and recording a final driving signal at the gear; (6) acquiring final driving signals at all the gears; and (7) carrying out a fatigue durability test on the transmission system by respectively taking the final driving signals at all the gears as inputs. The method can be used for well reflecting the load of the transmission system of the automobile in the actual running process and simulating and representing stress and fatigue conditions of the transmission system indoors when the automobile runs actually, so that the fatigue life of the transmission system of the automobile is accurately and efficiently checked indoors.

Description

technical field [0001] The invention relates to a performance test method of an automobile transmission system, in particular to a driving load fatigue reproduction test method of an automobile transmission system. Background technique [0002] At present, most cars are arranged in the form of front and front drive, and its transmission system is mainly composed of a transmission (the final drive and differential are integrated with the transmission) and long and short half shafts. These components are combined to transmit torque for the driving of the car. role. During the actual driving process, the automobile transmission system is subjected to the dual action of alternating torque and the dynamic load caused by the up and down jump of the wheel. Most of the damage to its components and assemblies is due to the failure caused by the combined action of these two loads. , in order to verify and assess the fatigue reliability performance of the automobile transmission syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02G01M17/007
Inventor 邹喜红石晓辉施全郝建军张志刚余勇
Owner CHONGQING UNIV OF TECH
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