HIGH-ENTHALPY FLUID INJECTION INTEGRATED WITH SPARK PLUG

摘要

Disclosed is a turbocharged internal combustion piston engine system that includes a waste-heat recovery system. The waste-heat recovery system involves injecting heated water into the cylinders during combustion to increase engine power and efficiency and to reduce emissions. The engine can be a spark or compression ignition type of engine, and can utilize fuels including but not limited to diesel, natural gas, gasoline, and ethanol. The engine also includes a turbocharger that utilizes a turbine in the exhaust gas flow to provide power to a compressor in the intake air flow to pressurize the intake air and provide additional charge flow to the engine to increase engine output.

主权项

1. A waste heat recovery system for a turbocharged engine, comprising:
an internal combustion engine with one or more cylinders, the internal combustion engine to receive intake air and produce an exhaust gas flow of exhaust gasses; a turbocharger that extracts energy from the exhaust gas flow and compresses the intake air; a water source that receives water condensed out of the exhaust gas flow; a pump to pressurize the water condensed out of the exhaust gas flow; one or more heat exchangers to heat said water using waste heat from said internal combustion engine; and, one or more electronically controlled direct injectors to inject said water that has been pressurized and heated into at least one engine cylinder of said internal combustion engine where said direct injectors are integrated into spark plugs that initiate combustion in said at least one engine cylinder.