Transmission system of double-bridge liquid-driving mixed power automobile

A hybrid vehicle and transmission system technology, applied in the transmission system field of hydrostatic drive hybrid vehicle, can solve the problems of low transmission efficiency, energy recovery rate and recycling rate, improve fuel economy, ensure adaptability, The effect of improving overall efficiency

Inactive Publication Date: 2007-12-05
山东严格产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of generally low transmission efficiency, energy recovery rate and reutilization rate in existing hybrid electric vehicles, the present invention provides a double-axle hydraulic drive hybrid electric vehicle transmission system

Method used

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  • Transmission system of double-bridge liquid-driving mixed power automobile

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0011] Specific embodiment 1: Referring to Fig. 1, this embodiment consists of a front axle hydraulic pump / motor 1, a one-way valve 6, a constant pressure variable pump 7, a quantitative pump 8, a mechanical friction brake controller 9, and a rear axle wet multi-plate clutch 10. Torque speed sensor 12, rear axle hydraulic pump / motor 13, central controller 14, low pressure hydraulic accumulator 17, front axle wet multi-plate clutch 18, transmission 19, front axle hydraulic pump / motor control assembly 25, rear Axle hydraulic pump / motor control assembly 26, high-pressure hydraulic energy storage assembly 30, first overflow assembly 31 and second overflow assembly 32, oil inlet port of front axle hydraulic pump / motor 1, rear axle hydraulic pump / motor The oil inlet port of 13 and the oil outlet port of the check valve 6 communicate with the oil port of the high-pressure hydraulic energy storage assembly 30, the oil inlet port of the first overflow assembly 31, the oil inlet port of ...

specific Embodiment approach 2

[0013] Specific embodiment two: referring to Fig. 1, the front axle hydraulic pump / motor control assembly 25 of the present embodiment is made up of the first electro-hydraulic servo valve 3 and the first variable oil cylinder 2, the P port of the first electro-hydraulic servo valve 3 is connected with the quantitative The oil outlet port of the pump 8 is connected, the O port of the first electro-hydraulic servo valve 3 is connected with the oil port of the low-pressure hydraulic accumulator 17, and the A and B ports of the first electro-hydraulic servo valve 3 are connected with the ports of the first variable cylinder 2 respectively. The oil inlet and outlet ports are connected, and the piston rod of the first variable oil cylinder 2 is mechanically connected with the swash plate of the front axle hydraulic pump / motor 1. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0014]Specific embodiment three: Referring to Fig. 1, the rear axle hydraulic pump / motor control assembly 26 of this embodiment is composed of a second electro-hydraulic servo valve 21 and a second variable cylinder 20, the P port of the second electro-hydraulic servo valve 21 is connected to the quantitative The oil outlet port of the pump 8 is connected, the O port of the second electro-hydraulic servo valve 21 is connected with the oil port of the low-pressure hydraulic accumulator 17, and the A and B ports of the second electro-hydraulic servo valve 21 are connected with the second variable oil cylinder 20 respectively. The oil inlet and outlet ports are connected, and the piston rod of the second variable oil cylinder 20 is mechanically connected with the swash plate of the rear axle hydraulic pump / motor 13. Other components and connections are the same as those in the first embodiment.

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Abstract

The present invention relates to driving system for mixed power automobile, and is especially one kind of double axle hydraulic driving system for mixed power automobile. The double axle hydraulic driving system includes a constant pressure variable capacity pump, an energy accumulator, a hydraulic pump / motor connected to the front axle and the back axle via a wet clutch, a safety valve for providing the hydraulic pump / motor with constant pressure oil source, a central controller to receive various sensor signals for controlling the operation of the mixed power automobile. The present invention can recover and reuse the automobile braking energy, and has capacity of operating the engine in optimal status, high oil burning economic performance, reduced tail gas exhaustion, automatic drive mode conversion, high automobile driving performance and other advantages.

Description

technical field [0001] The invention relates to a transmission system, in particular to a transmission system of a hydrostatically driven hybrid vehicle. Background technique [0002] The transmission system of a traditional car is usually composed of a gearbox, drive shaft, axle, etc., which is difficult to manufacture and expensive, and cannot meet the requirements of continuously variable transmission and high steering performance of the vehicle. The number of cars in cities is increasing year by year, and the starting and braking are frequent. The energy consumption and exhaust emissions are relatively serious, which puts huge pressure on my country's energy security and environmental protection. The existing serial hydraulic drive hybrid power system usually uses a large displacement hydraulic pump / motor to drive the car. Under normal driving conditions, the hydraulic pump / motor often works at low speed and small load, thus making the system The low transmission effici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/14
Inventor 姜继海孙辉
Owner 山东严格产业发展有限公司
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