Engine throttle

Abstract

The invention discloses a non-contact electronic engine throttle comprising a throttle valve, a drive motor and a control unit, wherein the throttle valve comprises a valve body and a valve plate, the valve plate is arranged on the valve body by a valve plate shaft, the drive motor is controlled by the control unit to drive the valve plate through the valve plate shaft, the circumferential direction of the valve plate shaft is fixedly provided with magnet steel, a Hall device which is used for collecting a rotating angle of the valve plate shaft is axially and relatively fixed with the magnet steel on the throttle, and the signal output end of the Hall device is connected with the control unit. The engine throttle adopts a programmable Hall chip, improves the contact potential output form of the traditional resistance type electronic throttle, controls and outputs non-contact potential changes, has no mechanical wear when used, has no loose contact phenomenon, greatly prolongs the service life of the electronic throttle valve, saves the cost and increases the control accuracy.

Description

technical field [0001] The invention relates to an engine component, in particular to a non-contact electronic engine throttle. Background technique [0002] The EFI engine uses an electronic control device to replace the traditional mechanical system (such as a carburetor) to control the fuel supply process of the engine. The throttle is a device for the EFI engine to provide combustion-supporting air. It is equipped with an opening sensor, which transmits the opening value and opening speed to the controller. The controller can be set separately, or directly use the ECU, and the controller determines the motor vehicle speed. timely operating conditions. [0003] When the motor vehicle needs to be accelerated, the driver manipulates the accelerator pedal, and the accelerator pedal sensor generates a corresponding voltage signal that is input to the throttle controller. After processing, output the corresponding throttle angle control signal, directly drive the DC motor to...

AI Technical Summary

Problems solved by technology

Due to the mechanical connection of the cable or the variable resistor, the throttle opening accuracy is not high, and precise positioning cannot be achieved. The variable resistor is in the form of contacts, and mechanical wear and long-term wear are likely to cause poor contact and short life; especially It is difficult to control the accuracy of throttle opening during idling and refueling, which causes a mismatch between the fuel supply and power of the engine, resulting in fuel waste

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