Split-cycle four-stroke engine

Details Split-cycle four-stroke engine Split-cycle four-stroke engine

2005-10-11

2005-10-11

Nguyen, Hoang (Department: 3748)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

C123S07000R

Reexamination Certificate

active

06952923

ABSTRACT:
An engine has a crankshaft, rotating about a crankshaft axis of the engine. An expansion piston is slidably received within an expansion cylinder and operatively connected to the crankshaft such that the expansion piston reciprocates through an expansion stroke and an exhaust stroke of a four stroke cycle during a single rotation of the crankshaft. A compression piston is slidably received within a compression cylinder and operatively connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke of the same four stroke cycle during the same rotation of the crankshaft. A ratio of cylinder volumes from BDC to TDC for either one of the expansion cylinder and compression cylinder is substantially 20 to 1 or greater.

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