CRANK ANGLE SENSOR COOLING STRUCTURE OF ENGINE FOR SECURING NORMAL OPERATION OF CRANK ANGLE SENSOR BY VENT HOLE, BLADE, AND SENSOR COVER

摘要

PURPOSE: A crank angle sensor cooling structure of an engine is provided to stably operate a crank angle sensor without thermal damage by cooling forcibly the crank angle sensor and a wire with the air by a vent hole, a blade, and a sensor cover. CONSTITUTION: A crank angle sensor cooling structure of an engine is composed of a vent hole(1) formed on a rear wall(7) of a crank case of the engine facing a flywheel(5) toward a crank angle sensor(9); a blade disposed at the lateral side of the flywheel to forcibly move the air through the vent hole; and a sensor cover for covering the outside of the crank angle sensor and having a through-hole passing the air supplied through the vent hole and a wire(11) of the crank angle sensor. Plural blades are arranged at the side of the engine of the flywheel along the circumferential direction.