FOUR-STROKE ENGINE WITH INDEPENDENT THROTTLE VALVE

Abstract

The mechanism refers to a four-stroke engine of the independent throttle type, in which the four-stroke engine (100), during at least part of the low-load operating period when the intake pressure gauge signal (43) fluctuates significantly during a combustion cycle, the control mechanism (60) estimates the amount of air drawn into the combustion chamber (13) or obtains the amount of fuel required for a subsequent combustion cycle according to the intake pressure during the compression stroke obtained during the compression stroke where the intake pressure tends to increase, the position of the independent throttle valve during the compression stroke is measured during the compression stroke, and the next position of the independent throttle valve is obtained at a point in the same combustion cycle and after the position of the independent throttle valve during the compression stroke is collected and when the intake pressure is higher than the intake pressure at the point where the position of the independent throttle valve during the compression stroke is collected, and controls the mechanism Fuel supply (50) to supply fuel before the next combustion process.