Neutral gear position identifying method of mechanical automatic transmission

A technology of automatic transmission and identification method, which is applied in mechanical equipment, transmission control, components with teeth, etc., can solve the problems of slow response of the starting working condition system, large delay in the starting process of the vehicle, etc., so as to improve the maneuverability and guarantee reliability, improved accuracy

Active Publication Date: 2017-06-20
CHINA FIRST AUTOMOBILE
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Problems solved by technology

Causes a large delay in the startup process of the vehicle, and the system responds slowly in some startup conditions

Method used

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  • Neutral gear position identifying method of mechanical automatic transmission
  • Neutral gear position identifying method of mechanical automatic transmission
  • Neutral gear position identifying method of mechanical automatic transmission

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[0025] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0026] The mechanical automatic transmission of the present invention adopts a dual-motor control gear selection control actuator and an electronically controlled pneumatic or electronically controlled electric clutch control actuator, that is, the gear selection and shift of the gearbox are controlled by different motors respectively. The gear control actuator is arranged on the transmission and controls the gear selection and gear shift actions of the transmission. Both actuators are controlled by the transmission control electronic unit TCU.

[0027] figure 1 Described is the shift gate arrangement structure of a transmission with 4 shift positions and 8 shift positions. Such as figure 1 As shown, the shift control actuator performs tran

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Abstract

The invention discloses a neutral gear position identifying method of a mechanical automatic transmission. A gear selecting and shifting position sensor value of a gear selecting and shifting actuation mechanism controlled by double motors is compared with a neutral gear position value reset in a transmission electronic controller unit (TCU); and the method determines if a present state of the transmission is a neutral gear state according to the comparison result. When the transmission is judged to be not in the neutral gear position at present, the transmission gear selecting and shifting control and the clutch control are performed, so that a neutral gear of the transmission and the transmission neutral gear position confirmation control are realized. The method can accurately, quickly and reliably identify the neutral gear position of the transmission, guarantees start of an engine only when the transmission is in the neutral gear state, prevents the engine start danger of drivers due to gear engagement of the transmission, and prevents vehicle driving accidents.

Description

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Claims

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Application Information

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Owner CHINA FIRST AUTOMOBILE
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