Braking system and braking method of a hydrostatic transmission vehicle
A technology of vehicle braking and static pressure, applied in the direction of hydrostatic brakes, brakes, vehicle components, etc., can solve the problems of difficult to achieve good driving experience, short sliding distance, etc., and achieve the effect of convenient use and simple system structure
Inactive Publication Date: 2018-09-04
ARCHITECTURAL ENG INST GENERAL LOGISTICS DEPT P L A
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Problems solved by technology
However, the sliding distance of the vehicle in Scheme 2 is not controlled by human beings. Usually, the sliding distance is short, and it is difficult to achieve a good driving experience in which the driver can independently control the braking acceleration and sliding distance through the brake pedal in the mechanical braking system.
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[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0042] refer to figure 1 , the present invention consists of engine / motor 1, electromagnetic clutch 2, variable displacement hydraulic pump 3, right rear wheel hydraulic motor 4, first rotational speed sensor 5, second rotational speed sensor 6, left rear wheel hydraulic motor 7, variable speed solenoid valve 8 , Hydraulic pump B port pressure sensor 9, hydraulic pump A port pressure sensor 10, vehicle controller ECU11 and electronic brake pedal 11.
[0043] Among them, the rear end of the engine / motor 1 is mechanically connected to the variable displacement hydraulic pump 3 through the ...
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The invention discloses a braking system of a hydrostatic transmission vehicle and a braking method. The system comprises an ECU (electronic control unit), an engine / motor, a hydraulic pump, a hydraulic motor, a hydraulic valve, a braking pedal, an electromagnetic clutch, a hydraulic pump A / B port pressure sensor, a motor revolution speed transducer and the like. Different from an existing braking method of the hydrostatic transmission vehicle, the method which produces braking force positively related to the opening of the braking pedal by using characteristics of a hydrostatic transmission system during braking is provided innovatively. With the adoption of the method, the braking effect of traditional mechanical braking vehicles can be realized without assistance of a mechanical braking system, problems of vehicle sudden stoppage impact, short sliding distance or uncontrollable sliding parking positions of existing hydraulic transmission vehicles during braking can be effectively solved, and man-machine controllability and usability of the hydrostatic transmission vehicle are enhanced.
Description
【Technical field】 [0001] The invention relates to the technical field of vehicle braking systems, in particular to a braking system and a braking method for a static pressure transmission vehicle. 【Background technique】 [0002] The braking system is a vital part of all kinds of vehicles. The performance of the braking system determines the safety, handling and ease of use of the vehicle. As a special type of vehicle, hydrostatic transmission vehicles have good characteristics such as low speed, high torque, and stepless speed regulation. However, there has not been a good solution for the braking of hydrostatic transmission vehicles. The braking methods commonly used in hydrostatic transmission vehicles are mainly divided into the following three types: [0003] 1) When the vehicle brakes (or when the accelerator pedal of the vehicle is released without a brake pedal), the swing angle of the swash plate of the hydraulic pump of the hydrostatic transmission system returns t...
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IPC IPC(8): B60T13/68B60T10/04
CPCB60T10/04B60T13/686
Inventor 杨立浩朱从民张波王卫青李璐宋昆王丹赫思宇刘盼锋
Owner ARCHITECTURAL ENG INST GENERAL LOGISTICS DEPT P L A