Intake for fuel injected IC- engine - has valve maintained in position to achieve targetted detuning of oscillations in intake air flow

摘要

The intake is for a multi-cylinder IC engine (41), with at least one valve for dividing the intake air flow into two individual part flows. The valve is maintained in a position, corresponding to the maximum charging efficiency, or a position reducing the efficiency. The valve (49) is maintained in the position corresponding to the max. charging efficiency, above a preset threshold value for the engine load across the complete rpm. range. ADVANTAGE - Reduces work required by engine for charge changing.