Patent ID: 7077785
Filing Date: 2006-07-18
Classification: F16D,Y10T

Abstract:
1. A clutch connection/disconnection detection system for a single-cylinder engine, for detecting the connection/disconnection of a clutch intermediately provided between a crankshaft of said single-cylinder engine and a power transmission mechanism that transmits the output of said crankshaft comprising: a rotation variation coefficient detector that detects the rotation variation coefficient of said crankshaft, the rotation variation coefficient being a coefficient that changes with engine speed; and a decision mechanism that decides the connection/disconnection of said clutch by comparing said rotation variation coefficient detected by said rotation variation coefficient detector with a preliminarily determined threshold, wherein the rotation variation coefficient is a ratio of the time of a compression stroke and an exhaust stroke of the engine with respect to the time for two revolutions of the crankshaft.