Lubricating system and method for supplying lubricant to an internal combustion engine.

摘要

A lubricating system for an engine (11) and particularly for a two cycle crankcase compression internal combustion engine (11) wherein the amount of lubricant supplied by a reciprocating pump (22) to the engine (11) is varied by selectively delivering lubricant to the engine (11) and bypassing lubricant from the pump (22) back to the inlet side of the pump (22). The total amount of lubricant supplied is controlled by setting a duty ratio at the beginning of a control cycle and varying the time of the control in response to engine condition sensed during the control cycle so as to provide good transient control. <IMAGE>