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Electronic hydraulic braking system and vehicle electronic hydraulic braking system

A hydraulic brake and brake fluid technology, applied in the direction of brake transmission, brakes, vehicle components, etc., can solve the problems of piezoelectric oil circuit control valve, which are rarely mentioned, and improve dynamic response performance and braking performance. performance, high dynamic response performance, the effect of achieving precise control

Active Publication Date: 2016-08-17
JIANGSU UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there has been little mention of electrohydraulic braking systems with piezo-electric oil circuit control valves.

Method used

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  • Electronic hydraulic braking system and vehicle electronic hydraulic braking system
  • Electronic hydraulic braking system and vehicle electronic hydraulic braking system
  • Electronic hydraulic braking system and vehicle electronic hydraulic braking system

Examples

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Embodiment Construction

[0025] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0026] Such as figure 2As shown, a piezoelectric oil circuit control valve includes a displacement amplification mechanism, a screw plug 27, a housing 32, a piston 34, a return spring 28, a spool 29 and when an external electric field is applied, it generates The mechanical deformation in the direction to form the piezoelectric element 35 of the axial driving force in this direction, the screw plug 27 is screwed on the housing 32, the piston 34 and the piezoelectric element 35 are located in the housing 32, and the displacement amplification mechanism Include at least two stages of displacement amplifying unit, each stage of displacement amplifying unit comprises displacement amplifying lever 30, fixed hinge 46 and protruding point 30-1, the fixed...

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Abstract

The invention discloses an electronic hydraulic braking system and a vehicle electronic hydraulic braking system, wherein the piezoelectric oil circuit control valve in the electronic hydraulic braking system includes a piezoelectric element, a displacement amplification mechanism, a piston, a return spring, The spool, plug and housing, piezoelectric elements are deformed in the axial direction by applying an electric field, and the output load pushes the piston to move. The displacement amplifying mechanism includes at least two stages of displacement amplifying units. Each stage of displacement amplifying unit includes a displacement amplifying lever, a bump, a fixed hinge and a base. The small displacement of the piston is amplified through the lever principle, and the valve core is pushed together with the return spring to move the joint. Connect or disconnect the oil inlet and outlet. The piezoelectric oil circuit control valve is used as the oil inlet and return control valve of the electronic hydraulic brake system (EHB), which improves the frequency and control accuracy of the brake pressure adjustment of the EHB system. The piezoelectric oil circuit control valve and the EHB system of the present invention can improve the braking performance, economical performance and safety performance of the vehicle.

Description

technical field [0001] The invention relates to an electronic hydraulic braking system and a vehicle electronic hydraulic braking system, belonging to the technical field of vehicle braking. Background technique [0002] The braking system is one of the important components of the car, which is directly related to the comprehensive performance of the car and the safety of life and property, including service brakes, parking brakes and auxiliary brakes. The service brake is the main brake of the car, and generally adopts drum or disc friction braking method, which converts the kinetic energy and potential energy of the car into heat energy through friction, so as to realize the purpose of deceleration or braking of the car. Although the traditional hydraulic and pneumatic service brakes can meet the requirements of the existing braking regulations, they have shortcomings such as slow response speed, non-active adjustment, and difficult integrated control, which are not suitab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/68
Inventor 王奎洋何仁唐金花李国庆
Owner JIANGSU UNIV OF TECH
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