Six-stroke engine system with blowdown exhaust system

摘要

A six-stroke engine system including an engine with a combustion chamber including an exhaust valve that expels exhaust gasses and a blowdown exhaust valve that expels blowdown exhaust gasses during recompression. An exhaust line communicates with the engine to direct exhaust gasses out of the combustion chamber, and a blowdown exhaust line communicates with the engine to direct blowdown exhaust gasses out of the combustion chamber and into the exhaust line. The blowdown exhaust gasses are expelled through the blowdown exhaust valve during the recompression stroke, and the exhaust gasses are expelled through the exhaust valve during the exhaust stroke.

主权项

1. An internal combustion engine system operating on a six-stroke cycle comprising:
an engine including:
a combustion chamber having a piston reciprocally disposed in a cylinder to move between a top dead center position and a bottom dead center position, the combustion chamber further includes:
an exhaust valve adapted to open and close to selectively expel exhaust gasses from the combustion chamber during an exhaust stroke; anda blowdown exhaust valve adapted to open and close to selectively expel blowdown exhaust gasses from the combustion chamber during a recompression stroke; an exhaust line communicating with the engine to direct exhaust gasses out of the combustion chamber; and a blowdown exhaust line communicating with the engine to direct blowdown exhaust gasses out of the combustion chamber and into the exhaust line; wherein the blowdown exhaust gasses are expelled through the blowdown exhaust valve during the recompression stroke, and the exhaust gasses are expelled through the exhaust valve during the exhaust stroke.