Miniature commercial vehicle power steering system

Abstract

The invention provides a miniature commercial vehicle power steering system which comprises a vehicle frame, a steering machine, a power steering oil pot, a power steering oil pump arranged on one side of the vehicle frame, a radiator arranged in the middle of the vehicle frame and the power steering oil pot arranged on the radiator, and an oil outlet of the power steering oil pot is communicated with an oil inlet of the power steering oil pump through a first pipeline arranged along the radiator. An oil outlet of the power steering oil pump is communicated with an oil inlet of the steering engine through a second pipeline, and an oil outlet of the steering engine is communicated with an oil return opening of the power steering oil can through a third pipeline. According to the design, the power steering oil can is integrally installed on the radiator, on one hand, the first pipeline is arranged along the radiator, the length of the first pipeline is greatly reduced, on the other hand, the problems of abnormal power-rotating sound and heavy steering of a rotating system at low temperature are solved, and the NVH performance of the vehicle is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile steering systems, and in particular relates to a power steering system of a micro commercial vehicle, which is suitable for reducing the length of connecting pipelines and improving the NVH performance of the vehicle. Background technique [0002] With the rapid development of the automobile industry and the improvement of people's living standards, users have higher and higher demands on the quality of light commercial vehicles, which must not only be durable and reliable, but also require good comfort. When arranging the dynamic system of ordinary light commercial vehicles, due to the sufficient space in the engine compartment, the dynamic oil tank and the dynamic oil pump can be arranged on the same side of the frame. There is not enough space to arrange the dynamic oil pot and the dynamic oil pump at the same time. The dynamic oil pot and the dynamic oil pump are generally arranged on both ...

AI Technical Summary

Problems solved by technology

When arranging the dynamic system of ordinary light commercial vehicles, due to the sufficient space in the engine compartment, the dynamic oil pot and the dynamic oil pump can be arranged on the same side of the frame, while the chassis of mini commercial vehicles is compact, and the layout space of the engine compartment is limited. There is not enough space to arrange the dynamic oil pot and the dynamic oil pump at the same time. The dynamic oil pot and the dynamic oil pump are generally arranged on both sides of the frame respectively, such as the Chinese patent: authorized announcement number CN209208853U, authorized announcement date 2019.08.06 utility model, It discloses a bracket assembly for a rotating oil pot, including a fixed bracket and a mounting bracket for a rotating oil pot, the fixed bracket includes a first plate, a second plate, a third plate and a fourth plate connected in sequence, and the fourth plate Set opposite to the second plate, the first plate is provided with a frame connection hole, a reinforcing rib is provided between the first plate and the second plate, the mounting bracket of the rotating oil pot has a ring structure, and the mounting bracket of the rotating oil pot is connected to the second plate The four plates are fixedly connected to the surface away from the second plate. Although this structure can make it difficult for the dynamic oil pot to interfere with other parts of the chassis and ensure the reliability of the installation of the dynamic oil pot, the dynamic oil pot is integrated on the frame. The distance between the rotary oil pot and the rotary oil pump is long, and the connecting pipeline is long. Moreover, the rotary system has abnormal noise and heavy steering at low temperature, which reduces the NVH performance of the vehicle.

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