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Electrically controlled hydraulic vehicle with individual drive and brake of wheels and recovery of braking energy

A regenerative braking and independent drive technology, applied in the field of vehicles, can solve the problems of high cost and complexity, and achieve the effect of reducing dead weight, simplifying structure and improving competitiveness

Inactive Publication Date: 2003-11-19
NANJING UNIV OF SCI & TECH
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, modern control theory has also been widely used in the study of improving the dynamic characteristics of vehicles, but practical devices or components are often difficult to be popularized due to the complexity and high cost.

Method used

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  • Electrically controlled hydraulic vehicle with individual drive and brake of wheels and recovery of braking energy
  • Electrically controlled hydraulic vehicle with individual drive and brake of wheels and recovery of braking energy

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Embodiment Construction

[0010] In conjunction with the accompanying drawings, the electronically controlled hydraulic drive bus of the present invention, which independently drives the brakes and reclaims the braking energy, is characterized in that: engine 4 (diesel engine is selected for use), hydraulic accumulator 6 (air bag type hydraulic accumulator is selected for use) They are evenly installed on the frame 8, each wheel 3 is equipped with a two-way variable hydraulic motor 2, the engine 4 is connected with the hydraulic pump 5 (selection pump), the hydraulic pump 5 and each hydraulic motor 2 (two-way variable hydraulic motor is selected) They are respectively connected to the hydraulic accumulator 6 through the hydraulic pipeline 7, and the electronic control unit 1 receives sensor signals such as wheel angular velocity, accelerator pedal position, brake pedal position, engine speed, and hydraulic accumulator pressure, and controls the operation of the engine and passes The high-speed electroma...

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Abstract

An electrically controlled and hydraulically driven vehicle with individual drive and brake of wheel and recovering braking energy has an engine and a hydraulic energy accumulator. Each wheel is equipped with a bidirectional hydraulic motor. Said engine are connected to hydraulic pump. Said hydraulic pump and each hydraulic motor are communicated to the hydraulic energy accumulator. Its electric control unit can receive the signals of different sensors and control engine and hydraulic motors. Its advantages include optical economic efficiency, recovering braking energy, reducing discharge of harmful substances, high performance, simple structure and low cost.

Description

1. Technical field [0001] The invention relates to a vehicle (automobile, motorcycle, etc.), in particular to an electronically controlled hydraulic drive vehicle with independent driving and braking of wheels and recovery of braking energy. 2. Background technology [0002] The driving mode of conventional vehicles is mainly mechanical transmission, in addition to electric transmission, hydraulic transmission, hydraulic transmission and hybrid transmission. During the braking process, the kinetic energy of the vehicle is dissipated in the form of heat energy, and the wheels generally cannot achieve independent driving or braking. Hydraulic transmission has the characteristics of high power-to-weight ratio and stepless speed regulation, so it has the potential to be applied in vehicles, but there are problems such as low efficiency and poor reliability. The solution to these problems not only depends on the improvement of the design and manufacturing level of hydraulic comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K7/00B60K17/356B60T1/10
Inventor 常思勤
Owner NANJING UNIV OF SCI & TECH
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