Control method for auxiliary braking of heavy truck

Abstract

The invention discloses a control method for auxiliary braking of a heavy truck. According to the control method, the auxiliary braking process is divided into five gears, namely, the B gear, the first gear, the second gear, the third gear and the fourth gear, the five gears are controlled through a handle, the gears provide different auxiliary braking forces according to different requirement levels, and therefore the braking requirements of different road conditions are met, wherein the B gear and the fourth gear judge whether engine braking needs to be started or not according to the retarder intervention proportion, and when the retarder intervention proportion reaches 100%, engine braking intervenes; the control method is in linkage with ABS control, when an ABS detects that a wheel is about to be locked, or a rear wheel slips too much, auxiliary braking is out of work; after locking is removed, auxiliary braking works continuously. According to the control method, a proper, safe, convenient, rapid and effective auxiliary braking method can be provided according to various actual running working conditions, the use frequency of main braking is effectively reduced, and the economical efficiency and safety of vehicle running are promoted.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to a control method for auxiliary braking of heavy trucks. Background technique [0002] In recent years, with the continuous development of truck technology, people have higher and higher requirements for the safety, convenience and comfort of vehicle operation. At present, major domestic OEMs are developing auxiliary brake models matching retarders, but due to technical lag and layout matching limitations, most manufacturers' auxiliary braking control methods cannot achieve effective hierarchical control; or auxiliary Braking cannot be linked with engine braking, and the auxiliary braking force provided is limited, which cannot meet the demand for auxiliary braking force in some extreme working conditions; Various unstable situations. If a heavy-duty truck equipped with auxiliary brakes such as retarders cannot be safely, conveniently and effectively controlled, it wi...

AI Technical Summary

Problems solved by technology

At present, major domestic OEMs are developing auxiliary brake models matching retarders, but due to technical lag and layout matching limitations, most manufacturers' auxiliary braking control methods cannot achieve effective hierarchical control; or auxiliary Braking cannot be linked with engine braking, and the auxiliary braking force provided is limited, which cannot meet the demand for auxiliary braking force in some extreme working conditions; Various unstable situations

If a heavy-duty truck equipped with auxiliary brakes such as retarders cannot be safely, conveniently and effectively controlled, it will not only cause great complaints from users, but may also bring greater safety hazards

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