Patent ID: 8069657

Claim:
An internal combustion engine system, comprising: a plurality of combustion cylinders, comprising a first sub-plurality of combustion cylinders and a second single combustion cylinder; a first particulate filter in fluid communication with the first sub-plurality of combustion cylinders and the second single combustion cylinder, for receipt of exhaust gas from the combustion cylinders; an oxidation catalyst upstream of the first particulate filter; a monitoring device for monitoring the need of the first particulate filter to be regenerated; a valve controller configured, upon indication of a need of the first particulate filter to be regenerated, to prevent flow of exhaust gas from the first sub-plurality of combustion cylinders to the first particulate filter during regeneration of the first particulate filter, but to allow flow of exhaust gas from the second single combustion cylinder to the first particulate filter during regeneration of the first particulate filter; a fuel injection system controller programmed, upon indication of a need of the first particulate filter to be regenerated, to inject fuel into the separate single combustion cylinder in at least two parts, with a first fraction of fuel primarily provided to produce a target cylinder power while a subsequent fraction of fuel injected provides additional fuel to react across the oxidation catalyst to increase the temperature of the exhaust gas upstream of the first particulate filter; a heater upstream of the first particulate filter; and a flow redirection device configured to direct exhaust gas flow toward outer portions of the first particulate filter.