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Gear locking control method for automobile automatic transmission

A technology of automatic transmission and control method, which is applied in transmission control, components with teeth, belts/chains/gears, etc., can solve the problem that the gear position of the transmission cannot be fixed, and achieve less frequent shifting, simple control, and low price cheap effect

Active Publication Date: 2017-07-14
ZHENJIANG HELMHOLTZ HEAT TRANSFER TRANS SYST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a gear lock control method for an automatic transmission of an automobile, which is used to solve the problem that under special working conditions (uphill, downhill, turning, rapid acceleration, etc.), the gear of the transmission cannot be fixed at a position other than the first gear. Proper driving gear problem

Method used

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  • Gear locking control method for automobile automatic transmission
  • Gear locking control method for automobile automatic transmission

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Embodiment Construction

[0027] The basic principle of the present invention is to send a gear lock signal by pressing the gear lock button or other integrated operations. The control unit receives the signal, analyzes and judges that the gear is maintained, and then sends a signal to the gear shift actuator. To prohibit the shift actuator from working, thereby locking the gear in the current driving gear. When the engine speed is too low or too high, in order to prevent the vehicle from stopping due to engine flameout or damage to the engine and gearbox caused by high speed, the control unit will select the corresponding gear according to the current vehicle speed and accelerator opening and refer to the stored shift schedule. position, and send a shift signal to the actuator to force the shift, but the locking function is not released at this time, but it is locked in the shifted gear. However, the gear lock can be released under the intervention of the driver.

[0028] The gear lock button refers ...

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PUM

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Abstract

The invention discloses a gear locking control method for an automobile automatic transmission. The problem that a transmission gear cannot be fixed in a suitable driving gear except the 1 gear under the special working condition is solved. When the special working condition is met, the gear can be locked in the current driving gear, and the gear is not switched along with change of the automobile speed and throttle opening till the engine limit working status or driver intervention gear shifting occur. The dangerous phenomena of failure of gear putting, automobile sliding and the like caused by gear shifting which are encountered in a rampway are effectively avoided; frequent gear shifting is reduced, abrasion of gear shifting execution mechanisms such ad a clutch, a synchronizer and a brake is reduced, and the service life of the transmission is prolonged; and meanwhile a sensor used for identifying the road condition in the prior art is omitted, and a gear locking button low in price and simple in control is used, so that the work burden of a control unit is relieved, and the cost is reduced.

Description

technical field [0001] The invention relates to an automobile automatic transmission, in particular to a gear locking control method of the automobile automatic transmission, which belongs to the technical field of automobiles. Background technique [0002] Automotive stepped automatic transmissions include hydraulic automatic transmissions (AT), electromechanical automatic transmissions (AMT) and dual-clutch automatic transmissions (DCT) with a fixed number of gears. [0003] By adding an electronic control system to the automatic transmission, it can realize automatic clutch disengagement and engagement, as well as gear selection and execution of shifting, so that the vehicle equipped with automatic transmission has the advantages of simple and convenient shifting operation, stable start, and comfortable ride. However, just because the automatic transmission can automatically switch among several gears, it has shortcomings in some special working conditions. With the incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/18F16H59/66
CPCF16H59/66F16H61/18F16H2059/663
Inventor 张飞铁常涛王鹏张龙闫洪黎周慧
Owner ZHENJIANG HELMHOLTZ HEAT TRANSFER TRANS SYST CO LTD
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