Auxiliary braking device for shortening emergency braking distance and control method thereof
An auxiliary braking and emergency braking technology, which is applied in the field of automobile brake control, can solve the problems of shortening emergency braking distance, insufficient braking force, and long emergency braking distance, so as to shorten the emergency braking distance and enhance automobile safety performance , to achieve the effect of automatic operation
Inactive Publication Date: 2017-06-13
NINGBO UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
At present, many traffic accidents caused by automobiles running on the road are caused by the excessively long emergency braking distance. However, in this method, due to the action of inertial force during emergency braking, the front wheel load will increase rapidly due to the forward movement of the body load, resulting in the insufficient use of the front wheel adhesion. , so this method has limited effect on shortening the emergency braking distance
In addition, it is known that according to the Fiala tire model theory, the narrower the tire width is, the worse the braking force is. Poor mobility
[0003] In summary, the vehicle braking force in the prior art is insufficient, and its emergency braking distance is relatively long, resulting in low vehicle safety performance and easy to cause traffic accidents
Method used
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[0020] The specific embodiments will be described in detail below in conjunction with the accompanying drawings.
[0021] like figure 1 The auxiliary braking device shown includes a left auxiliary braking device, a right auxiliary braking device, an auxiliary braking control unit (MCU) 10, a braking deceleration sensor 11, a vehicle body yaw rate sensor 12, a left front The wheel load sensor 13, the right front wheel load sensor 14, and the auxiliary braking device are fixedly connected to the vehicle body 9 by screws or the like.
[0022] Specifically, the left auxiliary brake device includes a left rubber auxiliary brake hemisphere 1a, a left auxiliary brake piston 2a, a left auxiliary brake wheel cylinder 3a, a left return spring 4a, a left auxiliary brake fluid 5a, left auxiliary brake load sensor 6a, left auxiliary brake fluid oil pipe 7a, left auxiliary brake fluid outlet and return unit 8a; the right auxiliary brake device includes right rubber auxiliary brake hemisphe...
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The invention belongs to the technical field of automobile braking control and particularly relates to an auxiliary braking device for shortening an emergency braking distance and a control method thereof. The auxiliary braking device comprises double side auxiliary braking units, an auxiliary braking control unit, a braking deceleration sensor, an automobile body yaw velocity sensor, a left front wheel load sensor and a right front wheel load sensor, wherein the auxiliary braking control unit produces a startup signal or a reset signal respectively based on a received left side load signal and a received right side load signal and sends the signal to the left side auxiliary braking unit and / or the right side auxiliary braking unit, the left side auxiliary braking unit and / or the right side auxiliary braking unit starts auxiliary braking based on the startup signal or relieves the auxiliary braking based on the reset signal. The emergency braking distance can be effectively shortened, the emergency braking capability of an automobile is improved, the safety performance of the automobile is improved, operating labor is saved, the auxiliary braking device is convenient and quick, and automatic operation of auxiliary braking is achieved.
Description
technical field [0001] The invention belongs to the technical field of automobile braking control, and in particular relates to an auxiliary braking device for shortening emergency braking distance and a control method thereof. Background technique [0002] The shorter the emergency braking distance of the car, the better its braking performance and the higher the safety performance of the car. At present, many traffic accidents caused by automobiles running on the road are caused by the excessively long emergency braking distance. However, in this method, due to the action of inertial force during emergency braking, the front wheel load will increase rapidly due to the forward movement of the body load, resulting in the insufficient use of the front wheel adhesion. , so the effect of this method to shorten the emergency braking distance is limited. In addition, it is known that according to the Fiala tire model theory, the narrower the tire width is, the worse the braking...
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IPC IPC(8): B60T1/14
CPCB60T1/14
Inventor 赵付舟余昇王学锋
Owner NINGBO UNIVERSITY OF TECHNOLOGY