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US 12,359,633 B2Granted
Method for operating an engine
AssigneeTransportation IP Holdings, LLC
InventorAdam Edgar Klingbeil
Life of this patent
Estimating the term…
Abstract
Systems and methods for controlling fuel factions delivered to different cylinders are provided. In one example, a controller is configured to, during a single engine cycle and responsive to a first condition, deliver a lower fraction of a first fuel into a donor cylinder in comparison to a fraction of the first fuel being injected into a non-donor cylinder and deliver a higher fraction of a second fuel into the donor cylinder in comparison to a fraction of the second fuel being injected into the non-donor cylinder.
Claims18
A method for an engine, comprising:
- adjusting only a first substitution rate of a first fuel, a second fuel, and an oxidant delivered to at least one donor cylinder of the engine and maintaining a second substitution rate of the first fuel, the second fuel, and the oxidant delivered to at least one non-donor cylinder in response to a monitored engine parameter,
- wherein the adjusted first substitution rate and the maintained second substitution rate are different from each other,
- wherein the first fuel is carbon-free, and
- wherein the monitored engine parameter is a status of an aftertreatment device, wherein the status of the aftertreatment device comprises temperature, flow, pressure drop across the aftertreatment device, whether the aftertreatment device is regenerating, an anticipated regeneration start event, and estimated collection of flammable substances in the aftertreatment device.
1 more element
A system, comprising:
- an exhaust gas recirculation system (EGR) comprising an exhaust channel extending from a donor cylinder to an intake manifold for recirculating an exhaust emission to the donor cylinder and a non-donor cylinder;
- and
- a controller with instructions stored on memory thereof that cause the controller to:
- in response to a steady-state operation ending, decrease a first substitution rate of a first fuel and a second fuel in the donor cylinder and maintaining a second substitution rate of the first fuel and the second fuel in the non-donor cylinder,
- wherein the decreased first substitution rate and the maintained second substitution rate are different from each other,
- wherein the first fuel is carbon-free, and
- wherein the monitored engine parameter is a status of an aftertreatment device, wherein the status of the aftertreatment device comprises temperature, flow, pressure drop across the aftertreatment device, whether the aftertreatment device is regenerating, an anticipated regeneration start event, and estimated collection of flammable substances in the aftertreatment device.
4 more elements
A system for a vehicle, comprising:
- an engine comprising a donor cylinder and a non-donor cylinder;
- an exhaust gas recirculation system (EGR) comprising an exhaust channel extending from the donor cylinder to an intake manifold;
- and
- a controller with instructions stored on memory that cause the controller to:
- operate the donor cylinder and the non-donor cylinder at a given substitution rate including a first fuel, a second fuel, and an oxidant;
- and
- operate the non-donor cylinder at the given substitution rate and the donor cylinder at a different substitution rate in response to a monitored engine parameter,
- wherein the first fuel is carbon-free, and
- wherein the monitored engine parameter is a status of an aftertreatment device, wherein the status of the aftertreatment device comprises temperature, flow, pressure drop across the aftertreatment device, whether the aftertreatment device is regenerating, an anticipated regeneration start event, and estimated collection of flammable substances in the aftertreatment device.
6 more elements
Dependencies are inferred from the claim text.