Electric hydraulic pump for automotive electronically-controlled hydraulic power-assisted steering

Abstract

The invention belongs to a hydraulic element, and particularly relates to an electric hydraulic pump for automotive electronically-controlled hydraulic power-assisted steering. An oil tank assembly (1) is fixed to an oil pump front cover (2-9) of an oil pump assembly (2) through screws, an oil pump back cover (2-4) and an oil pump body (2-2) are fixed to the right end face of the oil pump front cover (2-9) through screws, the left end of the oil pump assembly (2) is connected with a motor assembly (5) through screws, a stator assembly (5-3) is pressed in a motor shell (5-2), the left end of the motor assembly (5) is connected with a controller assembly (6) and a controller shell (7) through screws, a control panel assembly (6-1) and a connector assembly (6-3) are fixed to a heat dissipation support (6-2), and the heat dissipation support (6-2) and a support (9) are fixed under the motor shell (5-2) through screws. The electric hydraulic pump for automotive electronically-controlled hydraulic power-assisted steering is compact in structure, convenient to manufacture and maintain, good in starting performance, high in efficiency and little in consumed energy.

Description

technical field [0001] The invention belongs to hydraulic components, in particular to an electro-hydraulic pump for vehicle electronically controlled hydraulic power steering. Background technique [0002] At present, the development trend of automobile technology is safety, energy saving, and environmental protection. The power steering system is a key component of the automobile. How to improve the performance of the system and reduce the energy consumption of the system has become an issue of increasing concern. In the traditional mechanical hydraulic power steering system, the engine drives the oil pump to realize the power steering. The displacement of the oil pump is mainly designed to overcome the maximum steering power when parking at low speeds and ensure light steering. However, when driving at high speed, the steering resistance of the car is significantly reduced, and the steering force required becomes smaller, while the engine drives the oil pump to run at hig...

AI Technical Summary

Problems solved by technology

However, when driving at high speed, the steering resistance of the car is significantly reduced, and the steering force required becomes smaller, while the engine drives the oil pump to run at high speed, and the output flow is several times that of the parking condition, resulting in a serious waste of energy

At the same time, too much power assistance is likely to produce a "fluttering" feeling, reducing the driver's perception of the road

In addition, because the oil pump is always outputting flow under the drive of the engine, it does not depend on whether the car has steering action, which also causes a waste of resources

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