Patent ID: 9464956
Filing Date: 2016-10-11
CPC Classification: F01P,F02B,F02F,G01L

Claim Text:
1. A single-cylinder internal combustion engine for a vehicle, the single-cylinder internal combustion engine comprising: a crankcase accommodating a crankshaft; a cylinder block connected to the crankcase and including a cylinder provided therein; a cylinder head connected to the cylinder block; a sensor mounting boss provided on the crankcase, the cylinder block, or the cylinder head; a sensor arranged to detect knocking of the single-cylinder internal combustion engine, the sensor being mounted to the sensor mounting boss; a fin provided on at least a portion of the cylinder block and the cylinder head; and a heat insulation member interposed between the sensor mounting boss and the sensor; wherein the heat insulation member is made of a material having a lower thermal conductivity than that of the sensor mounting boss; the sensor is arranged to detect vibrations; the single-cylinder internal combustion engine further includes a bolt arranged to mount the sensor and the heat insulation member to the sensor mounting boss, a portion of the bolt being in contact with the sensor mounting boss and another portion of the bolt being in direct contact with the sensor; each of the cylinder block and the cylinder head includes a top surface, a bottom surface, a left surface, and a right surface; an intake pipe is connected to one of the to surface, the bottom surface, the left surface, and the right surface of the cylinder head, and an exhaust pipe is connected to an opposite surface to the surface to which the intake pipe is connected; and the sensor mounting boss is provided on the surface of the cylinder head to which the intake pipe is connected or on a surface of the cylinder block that corresponds to the surface of the cylinder head to which the intake pipe is connected.