초록 ▼

A compound engine that includes a gas turbine unit and a piston unit wherein the cycle air for the piston unit is diverted through cooling passages to provide impingement cooling of several areas of the piston unit including the upper cylinder area, the outer and inner surfaces of the exhaust valve

A compound engine that includes a gas turbine unit and a piston unit wherein the cycle air for the piston unit is diverted through cooling passages to provide impingement cooling of several areas of the piston unit including the upper cylinder area, the outer and inner surfaces of the exhaust valve and other selected areas of the cylinder head.

대표청구항 ▼

A compound engine comprising: a gas turbine unit including a compressor receiving ambient air for providing cycle air, a first turbine connected to and driving the compressor, and a second turbine having an input fluidly coupled to an output of the first turbine; and a piston unit including an intak

A compound engine comprising: a gas turbine unit including a compressor receiving ambient air for providing cycle air, a first turbine connected to and driving the compressor, and a second turbine having an input fluidly coupled to an output of the first turbine; and a piston unit including an intake manifold receiving the cycle air provided by the compressor, an exhaust manifold in fluid communication with and providing cycle gas to the first turbine, a crankshaft mechanically coupled to the second turbine, a plurality of piston and cylinder assemblies, each of the plurality of piston and cylinder assemblies including a cylinder bore surrounded by a cylinder wall, a piston slidably mounted in the cylinder bore and having annular piston rings in sliding contact with the cylinder wall, the piston having one end operatively connected to the crankshaft for reciprocating motion within the cylinder bore, an intake port in fluid communication with the intake manifold, the intake port being located in the cylinder wall proximate a bottom dead center position of a respective piston, a first plurality of impingement cooling holes having first ends in fluid communication with the intake manifold for receiving cycle air, and second ends expelling and impinging cycle air at a high velocity on an outer area of a respective cylinder wall at a first location generally adjacent the piston rings of a respective piston located at a top dead center position.