Hydraulic auxiliary driving and braking system and control method thereof
An auxiliary drive and braking system technology, applied in the direction of hydrostatic brakes, control devices, brake types, etc., can solve the problems of poor adaptability to working conditions and poor fuel economy, and achieve the benefits of driving brake safety, reducing fuel consumption, The effect of simple layout and installation structure
Active Publication Date: 2016-10-26
CHINA FIRST AUTOMOBILE
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Problems solved by technology
[0006] The purpose of the present invention is to solve the problems of complex and changeable operating conditions of engineering vehicles such as heavy trucks and special vehicles such as urban sanitation vehicles, and the poor adaptability and fuel economy of traditional mechanical transmission systems. A set of hydraulic auxiliary driving and braking systems can be added on the basis of the structure of the vehicle to improve the adaptability of the vehicle's working conditions and fuel economy
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[0072] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0073] figure 1 It is a structural principle diagram of the hydraulic auxiliary driving and braking system of the present invention. In the figure, double dotted lines represent electrical signal lines, dotted lines represent hydraulic pipelines, and thick solid lines represent mechanical connections. Such as figure 1 As shown, the system of the present invention includes a conventional mechanical transmission system with the addition of a hydraulically assisted drive and braking system. The traditional mechanical transmission system includes engine 1, clutch 2, transmission 3, transaxle 4, rear wheel 5 and front wheel 6; the added hydraulic auxiliary driving and braking system includes power take-off 7, high-pressure variable pump 8, first Solenoid valve 9, second solenoid valve 10, proportional overflow valve 11, accumulato...
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The invention discloses a hydraulic auxiliary driving and braking system and a control method thereof. The system is formed by adding a power take-off unit, a hydraulic pump, two hydraulic motors, an energy storage device, two solenoid valves, a safety valve set, a proportional overflow valve, a heat exchanger, an oil tank and a control unit. In the traditional vehicle structure, an engine outputs power which is transmitted to rear wheels through a clutch, a transmission, a drive shaft and a drive axle, so that a vehicle is driven to run. The added power take-off unit is connected between the output end of a drive accessory of the engine and the hydraulic pump, power of the engine can be transmitted to the hydraulic pump, and the hydraulic pump respectively forms hydraulic circuits with the two hydraulic motors, the energy storage device and the proportional overflow valve through the two solenoid valves. The two hydraulic motors are arranged on the two front wheels respectively. The hydraulic auxiliary driving and braking system not only can improve passing capacity of a vehicle on a bad road face, but also can ensure stability of long slope brake, and meanwhile achieves brake energy recovery.
Description
technical field [0001] The invention belongs to the technical field of automobile hydraulic application, and relates to a hydraulic auxiliary driving and braking system applied to traditional automobiles and a control method thereof. Background technique [0002] In recent years, with the rapid development of the automobile industry in the 21st century, a major breakthrough has been made in the application of hydrostatic transmission technology in traditional vehicles, and relevant hydraulic drive technology has been applied in vehicle energy saving and environmental protection, which constitutes the oil-hydraulic power coupling technology of hydraulic hybrid power system It has gradually attracted great attention from domestic and foreign research institutions and automobile manufacturers. [0003] Traditional commercial trucks, heavy trucks, tractors and other engineering vehicles, as well as special vehicles such as urban sanitation vehicles, have complex and changeable o...
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IPC IPC(8): B60W10/06B60W10/18B60W10/24B60W40/00B60T10/04B60K17/04
CPCB60W10/06B60W10/18B60W10/24B60W2510/0638B60W2510/24B60W2520/28B60W2540/10B60W2540/12
Inventor 李胜柳兴林翟德文曲新强王敏刘彬娜王秀鹏
Owner CHINA FIRST AUTOMOBILE