A control method for an electronically controlled injection system

Abstract

The invention discloses an electric control injection system and a control method thereof. The electric control injection system and the control method are mainly composed of a controller, a drive circuit, an electric control injection device, a temperature sensor, a displacement sensor, a current sensor, a signal conditioning circuit and an electromagnetic actuator linear output strategy based on temperature rise compensation. The current sensor, the displacement sensor and the temperature sensor monitor the temperature, the valve displacement and the current signal of a moving-coil type electromagnetic actuator in the electric control injection device in real time, the temperature, the valve displacement and the current signal are fed back to the controller through the signal conditioning circuit, and the controller accurately modifies the electromagnetic force of the specific movement rule for driving a valve on the basis that the electromagnetic actuator linear output strategy based on temperature rise compensation serves as the operation basis for the controller to output voltage signals and control the output current of the drive circuit. The electric control injection system is simple in structure and accurate in control, the electromagnetic actuator linear output strategy based on temperature rise compensation is utilized, the losses caused by compensation temperature rise are effectively offset, and the work precision of the electric control injection device is improved.

Description

technical field [0001] The invention relates to the field of an electronically controlled injection system, in particular to an electronically controlled injection system and a control method thereof. technical background [0002] The electronically controlled injection device in the electronically controlled injection system is the final actuator of the engine fuel supply system. Its control characteristics, response speed, seating speed and flow characteristics have a great impact on the electronically controlled fuel supply system and the related performance of the engine. It is one of the most critical components in the electronically controlled fuel supply system, and has been concerned by relevant research institutions at home and abroad in recent years. Existing research focuses on reducing the high temperature generated during the operation of the electronically controlled injection device by taking cooling measures, so as to reduce the energy loss caused by temperat...

AI Technical Summary

Problems solved by technology

During the working process of the moving coil electromagnetic actuator, the current conversion frequency is generally too high, and the coil cutting magnetic field moves frequently, which easily leads to its high working temperature, resulting in problems such as system reliability decline and nonlinear effects of the electromagnetic coupling field, resulting in work Due to the energy loss during the time, the original current control method is not accurate enough, and cannot provide the electromagnetic force to drive the valve to a specific position.

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