Regeneration system having integral purge and ignition device
AssigneeCaterpillar Inc.
InventorsMark William Craig, Justin Werner McMenamy, Glenn Brian Cox, Andrew John Kieser, Ronald Dean Shinogle
Life of this patent
Estimating the term…
Abstract
A regeneration device is disclosed. The regeneration device has an injector configured to inject pressurized fuel during an injection event. The regeneration device also has a heater configured to ignite the pressurized fuel during the injection event. The heater is also configured to purge the injector between injection events.
Claims20
A regeneration device configured for use with a combustion engine, comprising:
- an injector configured to inject pressurized fuel during an injection event;
- a heater located at a nozzle end of the injector;
- and
- a controller in communication with the heater and the injector, the controller being configured to:
- operate the heater in order to ignite the pressurized fuel during the injection event;
- and
- operate the heater in order to purge the injector between injection events.
A method of operating a regeneration device including an injector, comprising:
- receiving a flow of exhaust from a combustion engine via a passageway, the regeneration device being coupled to the passageway;
- pressurizing fuel;
- injecting the pressurized fuel during an injection event with the injector;
- heating the injector to ignite the fuel in order to regenerate a filtration medium located in the passageway;
- and
- heating the injector to purge the injector of fuel, residue, or particulate matter between injection events.
A regeneration system for use with a combustion engine, comprising:
- a passageway configured to receive a flow of exhaust from the combustion engine;
- a filtration medium situated to remove particulate matter from the flow of exhaust;
- an injector configured to inject pressurized fuel into the flow of exhaust upstream of the filtration medium during an injection event to regenerate the filtration medium;
- a heater associated with the injector;
- and
- a controller configured to operate the heater to ignite the injected pressurized fuel during the injection event, the controller also being configured to operate the heater to purge the injector between injection events by way of heating.
Dependencies are inferred from the claim text.