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Limping mode control oil way of automatic transmission

A technology of automatic transmission and mode control, which is applied in transmission control, components with teeth, belts/chains/gears, etc. It can solve the problems of single lower gear and cannot satisfy the operation of the vehicle under multiple working conditions, and achieve reduction Possibility of danger, detailed design, and more effective design

Active Publication Date: 2016-01-06
HARBIN DONGAN AUTOMOTIVE ENGINE MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the current automatic transmission has a single gear in the limp mode and cannot meet the needs of the vehicle to operate under multiple working conditions, and then provide an automatic transmission with low and high gear limp modes, especially related to automatic transmissions with low, high and low gears. Control oil circuit in high gear limp mode

Method used

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  • Limping mode control oil way of automatic transmission
  • Limping mode control oil way of automatic transmission
  • Limping mode control oil way of automatic transmission

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] combine Figure 1 to Figure 4 As shown, according to the embodiment of the present invention, the automatic transmission limp mode control oil circuit includes an oil pan 1, an oil pump 2, a safety valve 3, a main pressure regulating valve 4, a manual valve 5, a logic control valve 6, a limp selection valve 7, Pressure limiting valve 8, first clutch C1, second clutch C2, third clutch C3, first solenoid valve S1, second solenoid valve S2, third solenoid valve S3, fourth solenoid valve S4, first solenoid valve S1, Both the second solenoid valve S2 and the third solenoid valve S3 are normally open solenoid valves, and the fourth solenoid valve S4 is a normally closed solenoid valve. The oil inlet end of the oil pump 2 is in communication with the oil pan 1, and the oil outlet end of the oil pump 2 is pumped into the first oil circuit 11 after being pressure-regu...

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Abstract

The invention relates to a limping mode control oil way of an automatic transmission, and belongs to the technical field of control oil ways of automatic transmissions of cars. According to the limping mode control oil way of the automatic transmission, solenoid valves, a limping selector valve and a logic control valve are adopted for controlling limping oil ways. The oil ways controlled by the limping selector valve are interlocking oil ways, that is, when the second oil way and the low-gear oil way are communicated, the second oil way and the high-gear oil way are disconnected; on the contrary, when the second oil way and the high-gear oil way are communicated, the second oil way and the low-gear oil way are disconnected; and the limping selector valve is driven by the sixth oil way controlled by the second solenoid valve, and therefore a high-gear limping mode and a low-gear limping mode can be achieved, and design is more detailed than existing single-gear limping design. The oil way is simple and reasonable in design, and limping of the cars under various road conditions can be met when the automatic transmission breaks down.

Description

technical field [0001] The invention relates to a limp mode control oil circuit of an automatic transmission, which belongs to the technical field of the control oil circuit of a vehicle automatic transmission. Background technique [0002] At present, most models on the market are equipped with automatic transmissions. Automatic transmissions are favored by drivers because of their advantages such as gentle speed change, stable driving, no tedious shifting process, and convenient control. [0003] However, for automotive automatic transmissions, due to the precise production and complex circuit and oil circuit control, when the automotive TCU (automatic transmission control unit) fails or detects automatic transmission failures and potential safety hazards, the vehicle does not have a limp mode. At this time, it may break down or be unable to drive, and a vehicle with a limp mode can still provide an emergency driving gear in this case, that is, the automatic transmission i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/40F16H61/18
CPCF16H61/18F16H61/40
Inventor 孙德山赵非卢洪英严丽丽马静关崴李宾龙周章遐苗宇昌马全超方立辉刘云艳白冰赵志宇苏俊元张维明
Owner HARBIN DONGAN AUTOMOTIVE ENGINE MFG CO LTD
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