INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention relates to internal combustion engines without air throttling with divided-type spark ignition, i. e. fuel is proposed engine dies not mix with air till the moment close to end of compression stroke, directly before ignition of mixture. Proposed device employs second cylinder communicating with main cylinder, and fuel in second cylinder is vaporized inside. Space accommodating spark igniter adjoins second cylinder and metered out portion of fuel is delivered into said space. Fuel is mixed with air getting into space at compression stroke of engine to provide delivery of fuel mixture components to spark plug at moment of ignition at ratio close to theoretically required, independent of engine output power. EFFECT: provision of constant air rate at spark plug space inlet. 12 cl, 11 dwg