Patent ID: RE42667

Claim:
A method for generating turbulence of an air-fuel mixture in a combustion chamber of a multi-valve engine, said engine having at least first and second intake valve members each independently activated by an actuator member, with the activation of the actuator member being controlled by an engine controller unit, the method comprising the steps of: determining a first operating condition, a second operating condition, and a third operating condition of the engine; separately operating the intake valve members to generate an air-fuel turbulence in the engine combustion chamber corresponding at least In in part to the first, second and third operating conditions, so that under a first operating condition a high swirl, no tumble turbulence is formed, under a second operating condition a swirl and tumble turbulence is formed, and under a third operating condition a tumble, no swirl turbulence is formed; wherein the optimum air-fuel turbulence is created for the operating condition to maximize fuel efficiency and minimize undesirable emissions.