Electric air pump control method and system for vehicle

Abstract

The invention discloses an electric air pump control method for a vehicle and a control system adopting the method. The system comprises an air pump assembly, a pressure sensor and a time delay control device, wherein the time delay control device is connected with the pressure sensor and the air pump assembly through a wiring harness respectively, compares a pressure value P which is acquired in an air path by the pressure sensor with a set pressure value P0, and controls the operation of the air pump. The electric air pump control method comprises the following steps that: (1) when the pressure value P is smaller than the set pressure value P0, the time delay control device controls the air pump to start up; and (2) when the pressure value P is more than or equal to the set pressure value P0, the time delay control device stops the air pump after delayed time t. A pressure regulating valve and a pressure relay are not arranged in the traditional air path of the vehicle, the on / off and the water and sewage emission of the air pump are controlled by the time delay control device through a pressure sensor signal, and the method and the system have the advantages of simpleness and capacities of saving energy of the air pump, reducing the workload of the air pump and improving the working stability of a compressed air system.

Description

[technical field] [0001] The invention relates to a control method of a vehicle electric air pump. The present invention also relates to a control system of a vehicle electric air pump, the system includes an air pump assembly, a condensation / dryer, a pressure sensor and an air tank, the air pump assembly includes a motor and a transmission mechanism, the condensation / dryer includes an unloading / drainage valve, and the air pump passes through The condenser / dryer is communicated with the pipeline of the gas tank. [Background technique] [0002] At present, due to the increasingly stringent requirements for energy saving and emission reduction, the standards for energy saving and emission reduction of vehicles are also becoming stricter. In order to reduce the energy consumption of vehicles, many new vehicle systems including electric vehicles have been developed. The main braking form of the vehicle braking system, especially the braking system of large vehicles, is the air...

AI Technical Summary

Problems solved by technology

However, this method adds two components, the pressure relay and the pressure regulating valve. At the same time, the water and other dirt in the gas circuit cannot be effectively discharged, which often leads to blockage of the gas circuit and even cracks in the gas circuit in low temperature weather.

At the same time, the pressure regulating valve and the pressure relay are mechanical parts. When the vehicle is in use, it is often affected by vibration, dust, muddy water, etc., which will cause the air pump to fail to work normally and affect the safety of the vehicle.

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