Patent ID: 7107948
Filing Date: 2006-09-19
Classification: F02B,F02D,Y02T

Abstract:
1. An engine system comprising: an engine; and a control device that controls the engine, the engine comprising: a cylinder having a first opening; an intake valve that opens and closes the first opening; a valve driving device operable to drive the intake valve and arbitrarily control the lift amount of the intake valve; an intake passage having a second opening and arranged to introduce air and fuel into the cylinder from the first opening through the second opening; and a throttle valve provided to open and close the second opening of the intake passage and control the quantity of air to be introduced into the cylinder in response to a load required by a user, during intake operation in substantially all the load states of the engine, the control device controlling the valve driving device so that the opening area of the first opening determined by the lift amount of the intake valve is at least equal to the opening area of the second opening determined by the opening degree of the throttle valve.