Hill-start control device under traveling and parking braking and using method thereof

Abstract

The invention relates to a hill-start control device under traveling and parking braking and a using method thereof. In the invention, an air compressor is communicated with a hand braking reservoir and a feet braking reservoir through an air drier and a four-loop protective valve; the other end of the hand braking reservoir is communicated with a spring air chamber sequentially through a hand braking valve, a differential relay valve and a parking hill-start electromagnetic valve; the other end of the feet braking reservoir is communicated with the spring air chamber sequentially through a feet braking valve, an intermediate valve and a traveling hill-start electromagnetic valve; a parking air pressure sensor is arranged on an air path between the hand braking valve and the differential relay valve; a traveling air pressure sensor is arranged on an air path between the intermediate valve and the traveling hill-start electromagnetic valve; and the air pressure sensor and the hill-start electromagnetic valve are both connected with a whole electric control system circuit. The hill-start control device disclosed by the invention has the advantages of hill-start function under traveling and parking braking, stronger automaticity, higher sensitivity, strong controllability, wider application range and higher safety.

Description

technical field [0001] The invention relates to a control device for starting on a hill, in particular to a control device for starting a hill under driving and parking braking and a method of using the same, and is particularly suitable for a vehicle equipped with an automatic transmission (AMT for short). The car starts off a hill under the driving and parking brake. Background technique [0002] At present, the hill start under braking includes two types: the service brake downhill start and the parking brake downhill start. [0003] For the service braking downhill start: some vehicles equipped with AMT adopt the method of timing delay service braking, that is, when the engine accelerator pedal is depressed, the braking system automatically maintains the braking for a period of time (timed a few seconds), After the delay is over, the brake is released and the start is completed; if the start is not completed within the time limit, and no braking measures are taken, the ...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the defects and problems existing in the prior art that cannot simultaneously possess the functions of driving and parking braking downhill start, narrow application range, and poor controllability, and provide a vehicle that can simultaneously possess driving, Hill start control device for driving and parking brake with function, wide application range and strong controllability for hill start under parking brake and its use method

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