Pre-combustors for internal combustion engines and systems...

Details Pre-combustors for internal combustion engines and systems... Pre-combustors for internal combustion engines and systems...

2007-07-10

2007-07-10

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S295000, C060S297000, C060S303000, C060S309000, C060S311000, C048S1970FM, C422S182000, C422S183000

Reexamination Certificate

active

10910213

ABSTRACT:
Described here are systems and methods for treating fuel injected exhaust streams. In general, the systems comprise a fuel injector, a pre-combustor, and a fuel combustor. The methods described herein include methods for regenerating a NOxtrap or a DPF, and methods for generating a substantially uniform fuel air mixture at a fuel combustor inlet, or a substantially uniform temperature at a fuel combustor outlet. The methods of regenerating a NOxtrap typically comprise the steps of injecting fuel into an exhaust stream, passing the stream through a pre-combustor, operating the pre-combustor to at least partially combust the injected fuel, reacting the fuel and exhaust stream mixture within a fuel combustor to generate a reducing gas mixture, and introducing the reducing gas mixture into a NOxtrap, whereby the NOxtrap is regenerated. Similar methods for regenerating a diesel particulate filter are also described. Control strategies are also provided.

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