Suzuki Motor Corporation

Eiichi Iyoda

Ken Shibano

An engine controller for a vehicle having an automatic centrifugal clutch device, includes an engine halt controlling means (ECM) for performing engine halt control. The engine halt controlling means halts the engine with the condition that the engine speed becomes equal to or higher than a first set rotational frequency, which is set to be equal to or lower than the clutch engagement rotational frequency of the automatic centrifugal clutch device.

Engine controller for a vehicle including an automatic centrifugal clutch

A vehicle-mounted four cycle engine control device which includes an oil pressure detecting sensor that detects a pressure of lubricating oil circulated under pressure in an engine. An oil pressure detecting sensor failure judging system judges whether or not the oil pressure detecting sensor has failed. An engine speed judging system judges whether or not a speed of the engine is equal to or above a predetermined engine speed. A pressure state judging system judges whether or not the lubricating oil pressure detected by the oil pressure detecting sensor continues to be in a state of being lower than a predetermined reference pressure for a predetermined time interval or more. An engine control system reduces the engine speed when it is respectively judged by each of the judging systems that the oil pressure detecting sensor has not failed, that the engine speed is equal to or above the predetermined engine speed, and that the lubricating oil pressure continues to be in a state of being lower than the reference pressure for a predetermined delay time or more.

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Hamamatsu, Japan

Eiichi Iyoda