ENGINE SYSTEM AND SADDLE-STRADDLING TYPE MOTOR VEHICLE

摘要

A single-cylinder engine is controlled in a normal mode and an idle stop mode by a control device. In the normal mode, air is led to a combustion chamber of a cylinder through an intake passage, and fuel is injected into the intake passage by an injector. A fuel-air mixture in the combustion chamber is ignited by an ignition device. In the idle stop mode, the ignition of the fuel-air mixture by the ignition device is not performed. The fuel is injected in a plurality of cycles right before rotation of a crank shaft is stopped in the idle stop mode. The ignition of the fuel-air mixture compressed in a first compression stroke is performed based on the detection of a detection subject by a reference angle sensor after a change from the idle stop mode to the normal mode.