Position controller of electronic throttle body

Abstract

The invention relates to a position controller of an electronic throttle body, belonging to an automobile engine intake system, in particular to an instrument controlling intake amount by accurately controlling the opening position of a throttle slice. The position controller of the electronic throttle body mainly comprises DC 12V and DC 5V switching power supplies, a 89C51singlechip control system, a liquid crystal display circuit, a motor-direction control circuit, a position signal pulse-width modulation generator circuit, an L298N module direct current servo system power driver circuit and an analog-to-digital conversion circuit; and particularly, the position controller of the electronic throttle body adopts a non-contact double-feedback position sensor and a position-locking signal generator circuit to lock the position of the throttle slice without fluctuation, thereby accurately controlling the position of the throttle slice and finally enabling an engine to be in an operation state with optimal dynamic property and combustibility.

Description

technical field [0001] The invention relates to a detection device for the position of an electronic throttle plate of an automobile engine intake system, in particular to a position control instrument for detecting a throttle body assembly of the automobile engine intake system. Background technique [0002] The role of the throttle body assembly in the automotive engine system is to control the intake flow of the engine and determine the operating conditions of the engine. The driver manipulates the throttle opening by operating the accelerator pedal. The traditional throttle body assembly adopts a mechanical connection method, and the accelerator pedal and the throttle body assembly are connected through a pull rod or a cable transmission. Therefore, the opening of the throttle valve depends entirely on the position of the accelerator pedal, that is, the driver's operation intention, but from the power From the point of view of safety and economy, the engine is not alway...

AI Technical Summary

Problems solved by technology

Second, due to changes in starting, accelerating, braking (door lock position) and working conditions, it is more complicated to adopt a general hardware logic circuit design for the electronic throttle body assembly, and if it is necessary to change the operating curve, the hardware circuit Modification is troublesome and difficult to implement

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