FIELD: engines and pumps.
SUBSTANCE: invention relates to the field of internal combustion engines. Method includes the following steps: a cylinder filling volume is divided into a filling volume of an engine operating in low power mode and a filling volume of an engine operating in high power mode. Degree of compression is calculated. Air supply is enhanced, air inlet is begun into the filling volume of the engine operating in high power mode, which exceeds the filling volume of the engine operating in low power mode, due to the increase in filling volume, the degree of compression is increased, and by increasing the degree of compression, the compression density of a fuel-air mixture is increased and the air-to-fuel ratio is reduced by increasing the compression density of the fuel-air mixture. Electronic control unit, receiving a knocking signal from a knock sensor, in real-time adjusts the duration of the ignition phase. Control of injected fuel volume in real time provides the necessary compression density for the combustion of a poor fuel-air mixture. When receiving the knocking signal from the knock sensor, the regulation of the pulse duration of the fuel injection produced in a closed-loop control system with an oxygen sensor is canceled.
EFFECT: method is proposed for changing the compression ratio and changing the air-fuel ratio in an internal combustion engine.
5 cl, 5 dwg
