Ignition coil collocation structure of internal combustion engine

Abstract

This invention provides an ignition coil configuration structure of internal combustion engine which is capable of compacting the component configuration and simply processing the wiring, wherein a spark plug cap (45j) of a spark plug (45) mounted on a forwards inclined cylinder cover (33), a connection terminal (171j) for collecting electric wiring of each sensor of an air damper body (25) mounted on an air suction passage (23) and each electric connection part of a connection terminal (24j) of an ejector mounted on the air suction passage are mounted at the same side of the air suction passage; an ignition coil (29) is mounted at the position superposed with a cylinder (32) viewed from the side along the side face of the side of a cylinder body (32) which is located at the side with the side where the air suction passage (23) of each electric connection part is mounted.

Description

technical field [0001] The present invention relates to an ignition coil arrangement structure of an internal combustion engine constituting a power unit mounted on a scooter vehicle. Background technique [0002] A power unit mounted on a scooter-type vehicle is pivotally supported by a vehicle frame via a pivot provided above or below a crankcase of the internal combustion engine so as to be able to swing freely. [0003] Furthermore, an ignition coil that drives a spark plug attached to a cylinder head is generally disposed above the internal combustion engine (for example, refer to Patent Document 1). [0004] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2004-263694 [0005] A drive unit (power unit) disclosed in Patent Document 1 is pivotally supported by a vehicle frame through a pivot provided at a lower portion of a crankcase of an engine (internal combustion engine) so as to be able to swing freely. [0006] In addition, the ignition coil is dis...

AI Technical Summary

Problems solved by technology

[0007] Therefore, in the engine of the drive unit disclosed in Patent Document 1, the ignition coil is largely separated from the pivot shaft of the drive unit, so the swing range of the ignition coil is large, and therefore, it is necessary to ensure a large distance for avoiding contact with other parts. There is ample space for interference, which increases the size of the parts arrangement, and the play of the wiring cord extending from the ignition coil also increases, which complicates the handling of wiring.

Images