A dimethyl ether compression ignition rotary engine and its control method

Abstract

The invention discloses a dimethyl ether compression ignition type rotor engine which comprises an oil tank. When a gasoline nozzle receives an oil injection signal and opens, an oil pump pumps out gasoline in the oil tank and injects the gasoline into a combustion chamber through a gasoline flowmeter; a spark plug type cylinder pressure sensor ignites, and a charge amplifier is connected to the spark plug type cylinder pressure sensor in series; an electronic control unit regulates and controls ignition and oil injection parameters; and an air inlet pressure sensor is connected to an air flowmeter in series, a dimethyl ether nozzle is further arranged behind the air inlet pressure sensor, dimethyl ether is sprayed into the combustion chamber through the nozzle after passing through a pressure reducing valve and the flowmeter, and a flame-retardant valve is further arranged on a dimethyl ether conveying pipeline. According to the dimethyl ether compression ignition type rotor engine, arotating speed of the engine and a pressure rise rate in a cylinder are used as trigger signals, and the electronic control unit controls a flow rate of fuel injected into the combustion chamber according to a working state of the engine, so that a control method of the compression ignition type rotor engine is realized, and the fuel economy and the heat efficiency of the rotor engine are effectively improved.

Description

technical field [0001] The invention provides a dimethyl ether compression ignition rotary engine and a control method thereof. The invention relates to a realization method of a compression ignition type rotor and belongs to the field of internal combustion engines. Background technique [0002] Rotary engines have the advantages of small size, light weight, simple structure, and large power-to-weight ratio. Countries around the world have widely used rotary engines in fields such as unmanned aerial vehicles, military special vehicles, marine landing craft, small ships, and portable generators. . However, the rotary machine also has problems such as poor fuel economy and high emissions. The main reason for these problems is that the long and narrow combustion chamber structure of the rotary machine is not conducive to the rapid and complete combustion of fuel, and the high surface-to-volume ratio increases the problem of wall quenching. , and the line sealing form leads t...

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Problems solved by technology

However, the rotary machine also has problems such as poor fuel economy and high emissions. The main reason for these problems is that the long and narrow combustion chamber structure of the rotary machine is not conducive to the rapid and complete combustion of fuel, and the high surface-to-volume ratio increases the problem of wall quenching. , and the line sealing form leads to a higher air leakage rate, etc.

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