Electronic-controlled engine under-vehicle accelerator constant-rotation-speed switching switch control device

Abstract

An electronic-controlled engine under-vehicle accelerator constant-rotation-speed switching switch control device comprises an engine ECU, a vehicle body center computer, a power takeoff electromagnetic valve, a power takeoff position switch, a multi-throw switch and a power takeoff switch, wherein the power takeoff electromagnetic valve is connected with a power takeoff cylinder through a gas path and is electrically connected with the vehicle body center computer, the power takeoff position switch is arranged on the top of the power takeoff cylinder, and the power takeoff switch is electrically connected with the vehicle body center computer. One end of the power takeoff position switch is electrically connected with a 24V power supply, the other end of the power takeoff position switch is electrically connected with the coil end of a relay and the engine ECU, the contact switching end of the relay is connected with the vehicle body center computer, and the other end of the relay is grounded. The power takeoff position switch serves as a switching switch of a conventional accelerator and an under-vehicle accelerator, the operation process that the switching switch is manually operated is omitted, operation habits are simplified, and the situation that the switching switch is mistakenly operated by people can be avoided. An engine can be switched between various fixed rotation speeds by adjusting the gear of the multi-throw switch, and rotation speed control precision is high.

Description

Technical field [0001] The invention relates to an electronically controlled engine vehicle lower throttle constant speed switch control device. Background technique [0002] For electronically controlled engine vehicles, the throttle control includes not only conventional throttle control, but also under-vehicle throttle control. The regular throttle and the under-vehicle throttle are switched by a switch. When working conditions are met, the under-vehicle accelerator can adjust the engine speed under the vehicle. Generally, bodywork vehicles equipped with power take-offs will be controlled by the lower accelerator when the power take-off is in place. [0003] The under-vehicle accelerator control signal of the engine ECU is a voltage signal. The traditional under-vehicle accelerator control terminal is a knob type or cable type potentiometer. The operation method is to rotate or pull the potentiometer to output different voltage values ​​to the engine ECU to make The engine sp...

AI Technical Summary

Problems solved by technology

Otherwise, the upper load will not work normally, and there will be a serious safety hazard

The traditional throttle potentiometer control under the car makes the engine speed change continuously, and it takes a long time to operate, and the accuracy of the engine speed is not easy to control, so it cannot meet the above requirements

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