Hydraulic retarding bridge wireless communication control system and method for articulated vehicle

Abstract

The invention discloses a hydraulic retarding bridge wireless communication control system and method for an articulated vehicle, which belong to the technical field of automobile auxiliary braking. The system comprises a tractor cab electronic control system, a trailer hydraulic retarder bridge electronic control system, a water path and gas path system and a control method, the tractor cab electronic control system and the trailer hydraulic retarder bridge electronic control system communicate through a wireless communication technology, the purpose that a cab remotely controls a trailer hydraulic retarder bridge is achieved, and the risk of control failure caused by breakage of a traditional signal line at a hinged position is avoided. The control system is simple in structure and highin reliability, remote control communication can be achieved, and traditional long-distance line arrangement is reduced. According to the control method, dangerous working conditions such as folding and drifting in the braking process can be avoided, the braking stability of the articulated vehicle is improved, the intelligent degree is high, and the functions of real-time speed protection and temperature protection are achieved.

Description

technical field [0001] The invention relates to a hydraulic retarder bridge wireless communication control system and method for articulated vehicles, belonging to the technical field of automobile auxiliary braking. Background technique [0002] In my country, articulated vehicles, as one of the main road transportation tools, often undertake medium and long-distance cargo transportation. The vehicle's large curb weight and long transportation distance are its important working characteristics. In order to ensure that the articulated vehicle can work for a long time and a long distance, the articulated vehicle must be equipped with a reliable braking device. As an auxiliary braking device, the hydraulic retarder can effectively improve the braking safety of the articulated vehicle. has been widely used. [0003] The traditional hydraulic retarder is installed behind the gearbox of the tractor. The braking torque of the hydraulic retarder only acts on the tractor, and the t...

AI Technical Summary

Problems solved by technology

[0003] The traditional hydraulic retarder is installed behind the gearbox of the tractor. The braking torque of the hydraulic retarder only acts on the tractor, and the trailer with a large load is not directly affected by the braking torque of the hydraulic retarder. Therefore, during the braking process, a strong force is generated between the tractor and the trailer, and dangerous conditions such as tail flicking and rollover are likely to occur. In order to solve the above problems, the Chinese invention patent "a hydraulic brake with a built-in water pump "Speed ​​Bridge" (Patent No.: ZL 2018 1 0138001.0, Publication Date: 2019-08-09) proposes a hydraulic retarder bridge scheme with a built-in water pump. The joint design of the hydraulic retarder and the trailer axle makes the The hydraulic retarder is integrated in the axle, which solves the problem of dangerous working conditions such as tail flicking and rollover during the braking process of the hydraulic retarder, and increases the braking stability

However, due to the particularity of the structure and installation location of the hydraulic retarder bridge, the traditional hydraulic retarder control system and control method cannot be applied to the hydraulic retarder bridge. The hydraulic retarder bridge is far away from the cab. The traditional control system only The length of the signal line between the ECU and the hydraulic retarder can be increased to achieve the goal of controlling the hydraulic retarder, which will inevitably increase the cost of the control system and the difficulty of installation. In addition, the structure of the traditional hydraulic retarder control system is complicated. Requires complex oil circuits and control valves, high manufacturing and maintenance costs

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