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Novel energy-saving differential power-assisted steering system of electric wheel automobile and control method thereof

An electric wheel vehicle and differential power assist technology are applied in the field of steering systems of electric wheel vehicles to achieve the effect of facilitating operation and stable steering.

Inactive Publication Date: 2014-01-08
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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However, the existing technology fails to solve this problem

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  • Novel energy-saving differential power-assisted steering system of electric wheel automobile and control method thereof
  • Novel energy-saving differential power-assisted steering system of electric wheel automobile and control method thereof
  • Novel energy-saving differential power-assisted steering system of electric wheel automobile and control method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 , image 3 As shown, the present invention is a new type of energy-saving electric wheel automobile differential power steering system, including electric wheels 1, a steering rod, and a braking device. The braking device includes a left hydraulic brake 91 and a right hydraulic brake for the left and right electric wheels. 92. The left and right hydraulic brakes are respectively connected to a hydraulic rotary valve 4 through an oil circuit, the main oil circuit of the hydraulic rotary valve 4 is connected to a differential distribution valve 5, and the control mechanism of the hydraulic rotary valve 4 is connected to the steering rod 13 The main oil circuit of the differential distribution valve 5 is connected to an accumulator 7 through a normally open electromagnetic on-off valve 6. The control mechanism of the differential distribution valve 5 is connected to the two mechanical The centrifugal adjusting device 3 is connected. The mechanical centrifu...

Embodiment 2

[0032] Such as figure 1 , figure 2 Shown on the basis of embodiment 1, a torque sensor 10 is provided on the steering rod, and a two-position three-way solenoid valve 12 is provided on the output oil line of the hydraulic oil pump. The input of the two-position three-way solenoid valve is The two output ends are connected to the accumulator and the oil storage tank respectively. There is a pressure sensor 11 in the accumulator, the solenoid on-off valve 6, the two-position three-way solenoid valve The pressure sensor and the torque sensor are all connected to an electronic control unit, which is connected to the front wheel speed sensor and the brake opening sensor. When braking, the hydraulic fluid can be driven by the inertia of the wheels to rotate without an accumulator. The process is that when the car is braking and the pressure in the accumulator is insufficient, the electronic control unit controls the two-position three-way valve to switch on The hydraulic oil pump an...

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PUM

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Abstract

The invention relates to a novel energy-saving differential power-assisted steering system of an electric wheel automobile. The novel energy-saving differential power-assisted steering system of the electric wheel automobile comprises electric wheels, a steering device and a brake device. The brake device comprises a left brake of the left electric wheel, and a right brake of the right electric wheel; the left brake and the right brake are connected with a hydraulic rotary valve through oil ways; the hydraulic rotary valve is connected with a differential distribution valve, a main oil way of the differential distribution valve is connected with an energy accumulator through a normally-open type electromagnetic on-off valve, and a control mechanism of the differential distribution valve is connected with mechanical centrifugation adjusting devices arranged on the left electric wheel and the right electric wheel respectively. The novel energy-saving differential power-assisted steering system of the electric wheel automobile achieves the power-assisted steering effect through a mechanical mode to help the automobile veer stably under the power loss state of the automobile.

Description

[0001] Technical field [0002] The invention relates to an automobile steering system, in particular to a steering system of an electric wheel automobile. [0003] Background technique [0004] Automobile steering system is one of the most important parts of automobiles. The existing automobile steering systems include electronic power steering system, electric power steering system, hydraulic power steering system, and electronic hydraulic power steering system. Modern cars have high horsepower and high speed. In order to be light and sensitive, the steering gears of middle and high grade cars are equipped with steering power devices, also known as hydraulic power steering gears. It has no noise at work, high agility and small size, and can absorb the impact from uneven roads. It is widely used in modern cars. [0005] The main components of hydraulic power steering system include oil pump, hydraulic distribution valve and booster. The hydraulic distribution valve is integrated w...

Claims

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Application Information

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IPC IPC(8): B62D5/065B62D5/08
Inventor 李强张其民
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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