초록 ▼

Substantially instantaneous, sub-cyclic speed of an internal combustion engine provided by clock counts between successive sensing of integral numbers of teeth on the flywheel of the engine provide plural speed indications within each cylinder stroke engine sub-cycle, which are utilized relative to

Substantially instantaneous, sub-cyclic speed of an internal combustion engine provided by clock counts between successive sensing of integral numbers of teeth on the flywheel of the engine provide plural speed indications within each cylinder stroke engine sub-cycle, which are utilized relative to each other, without conversion to speed dimensions, to determine dynamic, sub-cyclic operating parameters of the engine, such as relative power contribution of the individual cylinders of the engine.

대표청구항 ▼

In a method of determining relative sub-cyclic dynamic operating conditions of a reciprocating internal combustion engine, the steps of: measuring the time required for the engine to rotate through substantially equal, successive small angles, said angles being a fraction of the angle of revolution

In a method of determining relative sub-cyclic dynamic operating conditions of a reciprocating internal combustion engine, the steps of: measuring the time required for the engine to rotate through substantially equal, successive small angles, said angles being a fraction of the angle of revolution of the engine allocated to the power stroke for each cylinder thereof; measuring a full cycle of engine revolutions, said full cycle of engine revolutions comprising one revolution in a two stroke engine and two revolutions in a four stroke engine; measuring angles which comprise a substantial portion of a power stroke of each cylinder and angles which comprise cylinder to cylinder angular increments from the beginning of said power stroke angles; and determining the speed at the start of each power stroke angle and at the end of each of said power stroke angles for each of said cylinders, taking the difference between the start and end speed for each of said cylinders to provide a measure of acceleration therefore, and indicating said accelerations in a manner to describe relative cylinder power contribution.