Patent ID: 7526915
Filing Date: 2009-05-05
Classification: F02D,Y02T

Abstract:
1. A single cylinder engine comprising: an engine body including a combustion chamber, an intake opening and an exhaust opening which face toward the combustion chamber, an intake passage in communication with the combustion chamber through the intake opening, and an exhaust passage in communication with the combustion chamber through the exhaust opening; an intake valve that opens and closes the intake opening; an exhaust valve that opens and closes the exhaust opening; an injector that injects a fuel toward the intake opening and into the intake passage; a ternary catalyst provided in the exhaust passage; a control device that performs a decelerating operation in which the control device executes a cycle for injection of a fuel from the injector, a quantity of which makes an air fuel ratio in the combustion chamber substantially equal to a theoretical air fuel ratio, and a cycle for inhibition of fuel injection from the injector in which the fuel is not injected, such that both of the cycle for injection of a fuel from the injector and the cycle for inhibition of fuel injection from the injector occur at least one time during the decelerating operation; and a throttle valve provided in the intake passage; wherein the decelerating operation is executed with the throttle valve open.