Control system and control method of intake and unloading air compressor

Abstract

The invention relates to a control system and control method for an intaking and unloading air compressor of a vehicle. The control system comprises a real-time signal receiving module, a data storagemodule, an operation treatment module and a control signal output module. The real-time signal receiving module can receive an air storage cylinder pressure signal, an engine rotation speed signal, an engine pedal signal and an engine load rate signal in real time; the data storage module stores an air storage cylinder maximum critical pressure value, an air storage cylinder minimum critical pressure value, an engine critical speed value, a pedal opening degree critical value, a pedal opening degree change rate critical value and an engine load rate critical value; the operation treatment module compares a real-time signal received by the real-time signal receiving module with data stored in the data storage module, and generates a control signal; and the control signal output module outputs the control signal to the air compressor for carrying out corresponding operation.

Description

technical field [0001] The invention relates to the technical field of engine intake and exhaust, in particular to a control system and control method for a vehicle intake and unloading air compressor. Background technique [0002] At present, most of the public transportation and daily necessities logistics vehicles in the city are powered by diesel engines. The traffic characteristics in the city determine the emergence of frequent startup and acceleration transient conditions, which require the dynamic performance of the vehicle and engine at startup and low speed acceleration. The performance must be high, but the configuration of the intake and exhaust system of a general diesel engine is difficult to take into account urban use and suburban and high-speed working conditions at the same time. In many cases, it will be difficult for the whole vehicle to start, and there will be insufficient power for low-speed acceleration. The intake air volume at low speed has a crucia...

AI Technical Summary

Problems solved by technology

There are many ways to increase the intake air volume at low speeds, such as changing the supercharging system, using technologies such as variable cross-section supercharger, two-stage supercharging and electric-assisted supercharging, but the cost is high and the market promotion is difficult; The load air compressor is often used as an energy-saving accessory. When the pressure of the air storage tank is greater than a certain value, the air intake unloading air compressor performs intake unloading to reduce its own power consumption, thereby reducing the engine power consumption, but it cannot be combined with the engine and the whole When the car is running, the air intake unloading operation is performed under certain specific working conditions, which cannot realize the function of reducing power consumption and reducing the intake air volume of the air compressor under certain working conditions to improve power performance.

Images