Method and system for lubricating an intermal combustion engine.

摘要

The lubricant supplying pump pumps a finite amount of lubricant during a single pumping stroke and a drive unit, preferrably a stepper motor, operates the pump through incremental phases of movement each less than the complete pump stroke. The lubricant requirements of the engine are determined and the driving increments are adjusted to as to provide a pumping stroke when the liquid comsumption of the machine which is the output of the pump. Various arrangements for stepper motors and controller arrangements therefore are disclosed for controlling the amount and timing of the liquid delivery. <IMAGE>