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US 2012/0067032 A1Published application
Particulate filter regeneration
OwnerRichard E. Winsorinventor
Life of this patent
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Abstract
A power system, including a multi-cylinder air breathing, fuel consuming diesel engine having a manifold with a common inlet for distributing combustion air to a plurality of cylinders. A valve is positioned in the intake manifold to at least restrict air flow to a group of the cylinders of the engine less than the total number of cylinders so as to increase the load and increase the temperature of exhaust gas for facilitating regeneration of a particulate filter.
Claims7
A power system comprising:
- an air breathing, fuel consuming internal combustion engine having a plurality of cylinders and producing a rotary output and products of combustion;
- an intake manifold receiving combustion air from a common inlet and distributing such air to the cylinders of said engine;
- a fuel system for delivering fuel at controlled rates to at least a group of cylinders less than the total of said cylinders;
- a particulate filter receiving products of combustion from said engine, said particulate filter requiring periodic regeneration;
- and
- a valve positioned in said intake manifold to at least restrict combustion air flow to said group of cylinders, said fuel system at least reducing fuel flow substantially simultaneously to said group of cylinders, thereby increasing the load on said engine and the temperature in said exhaust gas flow for regeneration of said particulate filter.
3 more elements
Dependencies are inferred from the claim text.