McCoy Russell LLP
System and methods for reducing particulate matter emissions
A method may comprise: positioning a pressure control valve (PCV) at an outlet of a fuel rail; positioning a volume control valve (VCV) at an inlet of a high pressure pump; and in response to an exhaust particulate matter (PM) level deviating from a target PM level, adjusting a fuel ratio of a first fuel and a second fuel delivered to an engine, and opening one of the PCV and the VCV. In this way, the fuel oxygen content may be adjusted to maintain a PM at or below a target level without a DPF over a broad range of engine designs and operating conditions, while maintaining fuel economy.
Ford Global Technologies, LLC
F F F F F F F Y F F F F F F F F F
F02D F02D F02D F02D F02D F02D F02D Y02T F01N F02D F02D F01N F01N F02D F02D F02D F02D
inventional inventional inventional inventional inventional inventional inventional additional inventional inventional inventional additional additional inventional inventional inventional additional
Eric Matthew Nan James Eric Christopher Werner
Kurtz Robarge Anderson Polonowski Willems