Six-stroke combustion cycle engine and process

摘要

A fuel introduction system introduces fuel to an internal combustion engine operating on a six-stroke combustion cycle including a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke. The fuel introduction system includes a first orifice set for introducing a first fuel charge to a combustion chamber of the engine during the first compression stroke and/or power stroke and a second orifice set for introducing a second fuel charge to the combustion chamber during the second compression stroke and/or power stroke. Combustion of the second fuel charge can assist in burning particulate matter left in the combustion chamber from combusting the first fuel charge. The first and second orifice sets can be configured to differentiate the first and second fuel charges by, for example, fuel quantity or spray pattern.

主权项

1. An internal combustion engine system operating on a six-stroke cycle including a first compression stroke and a first power stroke, and a second compression stroke and a second power stroke, the system including:
a combustion chamber including a piston reciprocally disposed in a cylinder to move between a top dead center position and a bottom dead center position through at least a first compression stroke, a first power stroke, a second compression stroke, and a second power stroke; and a fuel introduction system associated with the combustion chamber, the fuel introduction system including a first orifice set and a second orifice set both configured to introduce a hydrocarbon-based fuel, the first orifice set dedicated to introducing fuel only during at least one of the first compression stroke and/or the first power stroke, and the second orifice set introduces fuel during at least one of the first compression stroke and the first power stroke and at least one of the second compression stroke and the second power stroke.