The invention relates to an exhaust valve control device (1) for two stroke engines, the device (1) comprising a governor (2), elements (3) connecting the governor (2) to an exhaust control valve (4), able to advance or retard opening of the exhaust port, ...

An improved method and system for the control of an engine system such as the spark timing. The control senses the speed variations either during a portion of a complete cycle and a complete cycle and/or from cycle to cycle in order to determine the load o...

An improved method and system for the control of an engine fuel injection system. The control senses the speed variations either during a portion of a complete cycle and a complete cycle and/or from cycle to cycle in order to determine the load on the engi...