Electronic throttle valve of engine of range-increasing type electric vehicle

Abstract

The invention relates to the field of manufacture of a range-increasing type electric vehicle and particularly relates to an electronic throttle valve of an engine of the range-increasing type electric vehicle. The electronic throttle valve comprises an air intake pipe, a valve plate, a throttle valve shaft, an electric-injection ECU (Electronic Control Unit) and a worm gear box body, wherein a worm gear seat is sheathed and fixed on the throttle valve shaft in the worm gear box body; a worm gear is arranged on the worm gear seat in a sheathing and sliding manner; vertical to the throttle valve shaft, a worm is arranged on the worm gear box body at one side of the worm gear, and a driving motor is arranged at the top end of the worm; and a displacement sensor is arranged at the end part of the worm gear box body, a displacement sensor connector is arranged at the periphery of the throttle valve shaft between a sealing end cover and the worm gear, and the side part of the displacement sensor connector is fixedly inserted with the side part of the worm gear. The electronic throttle valve has the advantages that the opening angle of the valve plate can be fed back to a central controller by the displacement sensor, and the central controller sends an instruction immediately to control rotation of a driving motor, so that the accurate real-time control of the throttle valve can be finally realized.

Description

technical field [0001] The invention relates to the field of manufacturing an extended-range electric vehicle, in particular to an electronic throttle valve for an engine of an extended-range electric vehicle. Background technique [0002] The throttle is a controllable valve used to control the air entering the engine. After the air enters the intake pipe, it mixes with gasoline to become a combustible mixture, which participates in combustion and does work. The throttle is the most important part of the engine system of today's EFI vehicles. Its upper part It is the air filter, and the lower part is the engine block, which is the throat of the car engine. [0003] At present, the range-extended electric vehicle is in the initial stage of development, and the throttle control of the most critical parts is required to be more precise. In the automotive field, the electronic throttle is also widely used, but the electronic throttle of the automobile engine is a rough control,...

AI Technical Summary

Problems solved by technology

[0003] At present, the range-extended electric vehicle is in the initial stage of development, and the throttle control of the most critical parts is required to be more precise. In the automotive field, the electronic throttle is also widely used, but the electronic throttle of the automobile engine is a rough control, which belongs to the throttle. The opening angle follows the action of the accelerator pedal, and the control accuracy does not need to be too high; while the throttle valve of the extended-range engine is mostly controlled by a program, and the throttle opening is no longer followed by the action of the accelerator pedal. The power consumption of the car provides the corresponding engine power generation speed, which requires high control accuracy in terms of engine speed stability, so it is necessary to design a precision-controlled electronic throttle that meets the range-extended engine.

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