Split cycle phase variable reciprocating piston spark ignition engine

摘要

A split cycle phase variable reciprocating piston spark ignition engine comprising a compressor unit having a compression chamber adapted to carry out the intake and compression strokes of a four stroke engine cycle, a power unit having an expansion chamber adapted to carry out the expansion and exhaust strokes of a four stroke engine cycle, a crossover gas passage for transferring compressed gas from the compression chamber to the expansion chamber, an expansion chamber volume modifier to provide nearly full load like combustion chamber condition at all the engine load conditions by means of modifying volume and shape of the expansion chamber, a phase altering mechanism for altering phase relation between the compressor unit and the power unit as a function of engine load variation, an electronic control unit for providing control commands for various electrically operated actuators and motors.

主权项

1. A split-cycle phase variable reciprocating piston spark ignition engine comprising:
a compressor unit having a compression chamber configured to carry out an intake stroke and a compression stroke of a four stroke engine cycle; a power unit having an expansion chamber configured to carry out an expansion stroke and an exhaust stroke of the four stroke engine cycle; an expansion chamber volume modifier configured to modify a volume and a shape of the expansion chamber; a crossover gas passage configured to transfer compressed gas from the compression chamber of compressor unit to the expansion chamber of the power unit, the expansion chamber is directly connected to the expansion chamber volume modifier; a phase altering mechanism configured to alter a phase relation between the compressor unit and the power unit; and an electronic controller configured to provide control commands for operating at least one actuator and one motor of the split-cycle phase variable reciprocating piston spark ignition engine.