Variable exhaust two-cycle industrial engine

Abstract

The application relates to a variable exhaust two-stroke industrial engine, belonging to the technical field of internal combustion engines; the engine comprises an engine main body, an exhaust assembly and an air intake control unit; the air intake control unit is composed of a reed valve, an air cleaner, an electronic control unit and a dry reed; the reed valve is hinged through an adjustable pin shaft, and a closed-loop feedback control loop is formed by combining non-contact detection of the dry reed; the electronic control unit dynamically adjusts the opening angle and frequency of the reed valve through a fuzzy algorithm based on a rotating speed signal and a throttle opening degree, so that scavenging efficiency is optimized; a rotatable baffle driven by a stepping motor is arranged in a three-way catalytic assembly of the exhaust assembly, the opening degree of the rotatable baffle is linked with an air intake signal, and dynamic matching of exhaust back pressure and catalytic temperature is realized. The application solves the problems of fatigue of a reed valve of a traditional two-stroke engine, low catalytic efficiency and excessive emission, and significantly improves combustion efficiency and environmental protection performance.

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