Vacuum booster capable of simulating pedal travel
A technology of vacuum booster and pedal stroke, which is applied in the direction of brakes, transportation and packaging, and brake transmission devices. It can solve the problems of incomplete recovery of braking energy and unsatisfactory pedal feeling of braking performance, and achieves a novel and simple structure. The effect of reliable performance and simple realization method
Inactive Publication Date: 2014-11-05
JILIN DONGGUANG AOWEI AUTOMOBILE BRAKE SYST
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[0004] The invention provides a vacuum booster capable of simulating the stroke of the pedal to solve the problems of incomplete recovery of braking energy, braking efficiency and unsatisfactory feeling of the pedal during braking in the original hydraulic braking system
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[0011] Including signal collection part 24, vacuum assistant 25 and simulator 26, the signal acquisition part 24 consists of acceleration sensor 1, vacuum assistant 25 consists of conventional vacuum assistant assembly 2 and valve stem 3. The valve stem is a set.The tube structure; the simulator part 26 by the simulator push rod 4. The emulator cylinder 5, Ⅰ cavity 501, Ⅱ cavity 502, Ⅲ cavity 503, ⅳ cavity 504, blocking circle 6, push rod end cover 7, air stroke spring 8, 8, air stroke spring 8, Big Spring 9, First Pistons buffer 10, first piston leather bowl 11, first piston 12, return spring 13, electromagnetic coil 14, often open valve 15, second piston 16, second piston leather bowl 17, 17, 17, 17, second piston bowl 17, 17.Second piston buffer 18, second piston spring 19, end cover 20, blocking circle 21, oil road 1:22, oil road 23; first piston buffer 10, first piston skin bowl 11 fixed in the first pistonOn the 12th, the second piston skin bowl 17, the second piston buffer ...
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The invention relates to a vacuum booster capable of simulating pedal travel, and belongs to the industry of automobiles. The vacuum booster comprises a signal collecting portion, a vacuum booster body and a simulator, the signal collecting portion is composed of an acceleration sensor, the vacuum booster body is composed of a conventional vacuum booster assembly and a valve rod, and the valve rod is of a sleeve structure. The vacuum booster has the advantages of being novel and simple in structure and reliable in performance. Due to the fact that the vacuum booster is manufactured by improving an original hydraulic brake system, a hydraulic brake portion is seldom changed, only the simulator portion and the sensor portion are additionally arranged, and the valve rod is improved. The brake systems of hybrid electric vehicles and battery electric vehicles of different models are improved, different pedal feeling simulators are designed, and only valve rod clearance and spring rigidity need to be adjusted. As for the software portion, only a threshold value of an acceleration signal needs to be changed, the achievement method is simple and performance is reliable.
Description
Technical field [0001] The present invention is a braking system for hybrid vehicles or pure electric vehicles, especially car braking systems that use traditional hydraulic suppression and feedback braking to coexist with energy recycling. Background technique [0002] In the traditional hydraulic pressure braking system, the vacuum booster is the key component of it. Its main function is to enlarge the pedal force and pass it to the brake main cylinder and then generate hydraulic transmission to the vehicle brake system for braking.The traditional vacuum booster directly identifies the brake signal applied to the pedal to the pedal, and brakes the corresponding strength to amplify the pedal force. [0003] Hybrid vehicles and pure electric vehicles use braking feedback devices. In order to maximize the most likely recycling braking energy, it is hoped to use only feedback braking when possible, and start the liquid pressure braking when needed.In the original hydraulic suppress...
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IPC IPC(8): B60T13/52
Inventor 李文惠张玉海柳恩芬陈思琦张殿东宋巍张立国曹明明戴鸿雁石喜娟刘哲徐巾巾
Owner JILIN DONGGUANG AOWEI AUTOMOBILE BRAKE SYST