Patent ID: 9038613
Filing Date: 2015-05-26
Classification: F02D,F02M,Y02T

Abstract:
1. A method of operating an engine fuel system, comprising: supplying a pressurized fuel mixture to a first fuel rail, said fuel mixture including a hydrocarbon component and an alcohol component; separating at least a portion of the alcohol component from the fuel mixture by passing at least said portion of the alcohol component through a fuel separation membrane element disposed within the first fuel rail to obtain an alcohol reduced fuel mixture, the membrane element being permeable and comprising a polymer; delivering the alcohol reduced fuel mixture from the first fuel rail to at least a cylinder of the engine via a first fuel injector fluidly coupled with the first fuel rail; supplying the separated alcohol component from the first fuel rail to a second fuel rail; and delivering the separated alcohol component from the second fuel rail to the cylinder via a second fuel injector fluidly coupled with the second fuel rail.