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Gearbox simulation test bench

A test bench, gearbox technology, used in vehicle testing, machine/structural component testing, machine gear/transmission testing, etc., to solve problems such as lack of accuracy, performance sensitivity, and dynamic range limitations

Inactive Publication Date: 2008-03-12
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] [04] The main disadvantage of this device is the lack of accuracy due to the use of a pneumatic rammer, and especially its limited performance in terms of sensitivity and dynamic range

Method used

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Examples

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Embodiment Construction

[0020] [20] The test bench that the present invention proposes to manufacture is a test bench that simulates a gearbox. More specifically, the test bench needs to reproduce aspects of performance corresponding to different types of gearboxes. This test bench is used in particular for the external control of gearboxes.

[0021] [21] The transmissions commonly used are in the form of automatic or manual transmissions.

[0022] [22] Figure 1a shows the first type of gearbox simulated by the present invention. Such a transmission is an automatic transmission type 40. The mechanically controlled automatic transmission 40 is generally actuated by an external control device 7 comprising a joystick 8 movable along a longitudinal section 41 . The joystick 8 thus allows selection of P, R, N or D modes, and allows manual change of gear (M+ or M-). In this case, only the shift file module is used. For this type of gearbox, it is only necessary to simulate the shift pattern correspond...

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PUM

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Abstract

The invention relates to a test bench that reproduces the performance of a gearbox. The invention consists of: at least one gearshift module (2) comprising a linear motor (12) and a ball joint (14) that can be used to convert a linear motion of the motor (12) into a rotational motion of a gearshift shaft (5) and a force sensor (17) that can be used to measure the force applied to the gearshift shaft (5). In particular embodiments of the invention, the test bench also comprises a vertical linear selection module or a horizontal selection module. The modules employed can be used to simulate forces as a function of the shift and selection position in a manner that is representative of a gearbox.

Description

technical field [0001] [01] The technical field of the invention is that of test benches for simulating gearboxes, such as motor vehicle gearboxes. Background technique [0002] [02] In the field of application of test benches, it is sometimes necessary to simulate gearboxes, and this is especially the case for test benches for the external control of gearboxes. [0003] [03] In the field of test benches for simulating gearboxes, test benches using pneumatic rams are currently known. [0004] [04] The main disadvantage of this device is the lack of accuracy due to the use of a pneumatic rammer, and in particular its performance is limited in terms of sensitivity and dynamic range. Contents of the invention [0005] [05] The present invention overcomes these drawbacks by proposing a test rig simulating a gearbox capable of generating loads equivalent to those of a real gearbox and reproducing different aspects of performance depending on the type of parametric gears. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
CPCG01M17/0074G01M13/02
Inventor C·阿格里科尔R·克里斯L·迪布瓦A·阿巴
Owner RENAULT SA
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