Intake system for IC engine - has high speed air admitted to combustion chamber to give swirl to air- fuel mixture

摘要

An intake system for an IC engine has a duct from the air filter (3) to the inlet valve (14) plus fuel injectors (21) which spray fuel towards the valve. There is also a means for high speed air to be admitted to the combustion chamber, thus giving turbulence to the air-fuel mixture. Fuel adhering to the inlet valve is blasted into the cylinder by the high speed air stream. The direction of the stream into the cylinder is downwards and away from the centre of the cylinder. In particular, the air stream is directed to the cylinder wall. The fuel jets from the injectors are at an angle to the axis of the inlet valve.