SPARK IGNITION INTERNAL COMBUSTION ENGINE Russian patent published in 2012 - IPC F02D15/04 F02D13/02 F02D9/02 

FIELD: internal combustion engine.

SUBSTANCE: invention considers spark ignition internal combustion engines. The internal combustion engine contains the variable compression mechanism (A) which allows changing the degree of mechanical compression, and the mechanism (B) of valve timing adjustment, which allows changing the induction valve timing (7). The volume of induced air supplied to the combustion chamber (5), is controlled by means of changing the induction valve timing (7). Degree of mechanical compression increases to the maximum degree of mechanical compression when the volume of induced air supplied to the combustion chamber decreases. In this case the volume of induced air supplied to the combustion chamber (5) decreases when the induction valve timing (7) is moved from the dead point of induction to the limit valve timing. When the induction valve timing (7) reaches the limit valve timing, the volume of induced air into the combustion chamber (5) becomes the limit controlled amount of induced air controlled by the valve timing adjustment mechanism. When the volume of induced air into the combustion chamber (5), decreases additionally due to the limit controlled volume of induced air, induction valve timing (7) is kept at the limit valve timing. During acceleration, when the volume of induced air into the combustion chamber (5) is less than limit controlled volume of induced air, if required acceleration degree is higher than predefined degree, movement of the induction valve timing (7) starts from the limit valve timing in the direction approaching to the lower dead point of induction when the volume of induced air to the combustion chamber is less in comparison with that when required acceleration degree is lower than predefined degree.

EFFECT: acceleration increase.

4 cl, 15 dwg