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Composite brake system with matching of compressed air and friction braking of engine and method

A technology of compressed air and braking system, applied in the field of recovery and recovery, to avoid the decline of braking force, reduce damage, and expand the application range of working conditions

Inactive Publication Date: 2011-07-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no matching problem between the compressed air braking system and the traditional friction braking system in the existing vehicles.

Method used

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  • Composite brake system with matching of compressed air and friction braking of engine and method
  • Composite brake system with matching of compressed air and friction braking of engine and method
  • Composite brake system with matching of compressed air and friction braking of engine and method

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Embodiment Construction

[0031]The system in the present invention includes engine compressed air brake system, traditional friction brake, electronic control unit ECU and brake pedal sensor, vehicle running state sensor, and vehicle state estimator built in electronic control unit ECU and other parts. Realize braking matching under different working conditions of the vehicle, and achieve optimal braking energy recovery. The composite system can realize the functions of compressed air braking force size adjustment, compressed air timely storage, compound brake anti-lock, and two braking forces (compressed air braking force and friction braking force) switching replenishment and other functions. The invention is not limited by the number of cylinders of the engine, as long as the valve is controlled to a certain extent and a set of gas storage device is added, the braking energy recovery can be realized. For example, in a traditional internal combustion engine, if it is necessary to implement the braki...

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Abstract

The invention relates to a composite brake system and a method, aiming at providing a composite brake system with matching of compressed air and friction braking of an engine and a method. The system comprises a compressed air braking system connected to a high-pressure gas storage tank by a high-pressure pipeline and further comprises a friction type braking system, wherein the high-pressure pipeline is provided with an electromagnetic valve; an electric control unit (ECU) is connected with a brake pedal sensor, a vehicle operating state sensor, a compressed air braking system, the friction type braking system and the electromagnetic valve respectively by signal lines. Compared with a traditional braking technology, in the invention, more energy can be saved, the damage to a friction brake is reduced in long-slope braking, the declining of the braking force is avoided, and the braking safety is improved; valve control can be realized, the adjustment of the size of the compressed air braking force can be realized, and the application range of working condition of the compressed air braking is expanded; and a lock braking function can be realized when the compressed air braking and the friction braking works separately or jointly, so that the stability of a vehicle braking system is improved.

Description

technical field [0001] The present invention relates to a compound braking system, through the rational matching and proper control of engine compressed air braking (the braking is realized by the compressed air mode of the air engine or internal combustion engine) and traditional friction braking, so that the pneumatic vehicle, pneumatic / fuel hybrid Power vehicles or vehicles with air compression mode internal combustion engines can achieve braking efficiency and stability when braking, and at the same time recover vehicle kinetic energy. Background technique [0002] With the increasingly urgent supply of oil resources and the increasing environmental pollution, the global auto industry is working hard to develop new energy vehicles to alleviate the pressure on the environment and energy. As an important way to achieve energy saving in new energy vehicles, braking energy recovery has also attracted more and more attention. On electric vehicles, the potential for recycling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/58B60T13/68B60T8/17F02D13/04
Inventor 李道飞王雷俞小莉徐焕祥叶锦李小飞
Owner ZHEJIANG UNIV
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