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Double-loop electric liquid hybrid brake system and brake control method thereof

An electro-hydraulic hybrid and braking system technology, applied in the direction of brake transmission device, brake, foot start device, etc., can solve problems such as increasing development difficulty, popularization and application, and achieve reduced development difficulty, fast braking response, and high reliability. sexual effect

Inactive Publication Date: 2019-05-17
南京经纬达汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the failure protection function, the electronic control system of the brake-by-wire system generally has more strict fault diagnosis and fault tolerance functions than the traditional brake system, which increases the difficulty of its development and limits its popularization and application to a certain extent.

Method used

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  • Double-loop electric liquid hybrid brake system and brake control method thereof
  • Double-loop electric liquid hybrid brake system and brake control method thereof
  • Double-loop electric liquid hybrid brake system and brake control method thereof

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Embodiment Construction

[0034] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0035] refer to figure 1 , a dual-circuit electro-hydraulic hybrid braking system, including a manual braking circuit and a wire-controlled braking circuit, the manual braking circuit includes a brake pedal 1, a manual cylinder 4, and connects the brake pedal 1 and the manual cylinder 4 The push rod 2 and the first brake group hydraulically connected with the human cylinder 4; the human cylinder 4 is connected with the first brake group through a brake pipeline, specifically, it is hydraulically connected with the two wheel cylinders in the first brake group .

[0036] The brake-by-wire circuit includes a brake pedal travel sensor 10, a brake controller 7 electrically connected to the brake pedal travel sensor 10, an electric cylinder 5 electrically connected to the brake controller 7, and a The electric cylinder 5 is hydraulically connected to the sec...

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Abstract

The invention provides a double-loop electric liquid hybrid brake system and a brake control method thereof. The system comprises a manpower brake loop and a line control dynamic loop, wherein the manpower brake loop comprises a brake pedal (1), a manpower cylinder (4) and a first brake group which is in hydraulic connection with the manpower cylinder (4); the line control brake loop comprises a brake pedal stroke sensor (10), a brake controller (7), an electronic cylinder (5) and a second brake group which is hydraulic connection with the electronic cylinder (5). The invention discloses the manpower brake loop which is manipulated by a driver and the line control dynamic loop which is controlled by an electric control system, ideal front and rear axle brake power allocation is achieved, and the reliability of the brake system can be improved. The system has the advantages of being rapid in brake response, good in brake pedal sensation and brake direction stability, high in ground adhesion utilization rate, simple in structure, low in cost and high in reliability.

Description

technical field [0001] The invention relates to the technical field of automobile braking systems, in particular to a dual-circuit electro-hydraulic hybrid braking system and a braking control method. Background technique [0002] Automobile braking system is closely related to automobile driving safety. Automobile braking systems generally adopt a dual-circuit structure to improve the reliability of service braking. The traditional dual-circuit hydraulic braking system is mainly composed of brake pedal, vacuum booster, brake manpower cylinder, hydraulic pipeline, rear wheel brake and front wheel brake. From the perspective of brake boosting methods, most of the current automotive hydraulic braking systems still use vacuum boosting, and only a few cars use other forms of boosting such as electric boosting. Since there is no vacuum source provided by the engine on the electric vehicle, a vacuum pump and a vacuum tank are required when this type of vehicle uses vacuum boosti...

Claims

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Application Information

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IPC IPC(8): B60T13/74B60T7/04
Inventor 邓伟文丁能根
Owner 南京经纬达汽车科技有限公司
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