Patent ID: 8474258
Filing Date: 2013-07-02
Classification: F01N,F02B,F02D,F02M,Y02T

Abstract:
1. A method of operating an air breathing, fuel consuming compression ignition internal combustion engine comprising the steps of: operating the reciprocating compression ignition engine at near stoichiometric fuel/air conditions, thus producing products of combustion with an excess of energy over that needed to produce a power output from the reciprocating compression ignition engine; driving a turbocharger turbine with said products of combustion from the reciprocating compression ignition engine; driving a turbocharger compressor with the turbocharger turbine for supplying pressurized air to the reciprocating compression ignition engine; selectively driving a power turbine in parallel relation to the turbocharger turbine when a preselected level of one of boost pressure from the turbocharger compressor and back pressure said products of combustion upstream of the turbocharger turbine is exceeded to at least add power to one of the power output of the reciprocating compression ignition engine and an auxiliary load device.