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US 2017/0370307 A1Published application
Advanced exhaust gas recirculation fueling control
AssigneeCummins IP, Inc.
InventorsSamuel C. GECKLER, Andrea Beck, Anthony Kyle Perfetto
Life of this patent
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Abstract
For exhaust gas recirculation (EGR) fueling control, at least one donor cylinder of a plurality of cylinders in an engine provides exhaust gas to an air intake for the plurality of cylinders. A fuel variable restriction initially provides fuel concurrent with an intake stroke for the at least one donor cylinder in response to a transition from withholding the fuel to the plurality of cylinders.
Claims20
An apparatus comprising:
- a controller structured to control a fuel variable restriction to initially provide a first amount of fuel concurrent with an intake stroke of a first donor cylinder of a plurality of cylinders of an engine and to subsequently provide a second amount of fuel concurrent with an intake stroke of a second donor cylinder of the plurality of cylinders in response to a transition from withholding fuel from the plurality of cylinders;
- wherein the first amount of fuel is less than an amount of fuel required by the transition;
- wherein the second amount of fuel is the amount of fuel required by the transition;
- and
- wherein the first donor cylinder and the second donor cylinder are structured to provide exhaust gas recirculation (EGR) flow to an air intake for the plurality of cylinders.
2 more elements
A method comprising:
- providing exhaust gas recirculation (EGR) flow to an air intake for a plurality of cylinders of an engine by a first donor cylinder and a second donor cylinder of the plurality of cylinders;
- providing a first amount of fuel from a fuel variable restriction concurrent with an intake stroke of the first donor cylinder before providing a second amount of fuel concurrent with an intake stroke of the second donor cylinder in response to a transition from withholding fuel from the plurality of cylinders;
- wherein the first amount of fuel is less than an amount of fuel required by the transition;
- wherein the second amount of fuel is the amount of fuel required by the transition.
1 more element
A system comprising:
- a controller communicatively coupled with a sensor and an engine comprising a plurality of cylinders including a first donor cylinder, a second donor cylinder, and at least one non-donor cylinder, the first donor cylinder and the second donor cylinder structured to provide Exhaust Gas Recirculation (EGR) to an air intake for the plurality of cylinders, the controller structured to:
- interpret sensor information indicative of an engine operating condition;
- and
- control, based on the engine operating condition and in response to a transition from withholding the fuel to the plurality of cylinders, a fuel variable restriction to initially provide a first amount of fuel concurrent with an intake stroke of the first donor cylinder before providing a second amount of fuel to a second donor cylinder;
- wherein the first amount of fuel is less than an amount of fuel required by the transition;
- and
- wherein the second amount of fuel is an amount of fuel required by the transition.
4 more elements
Dependencies are inferred from the claim text.