Reducing HC collection in a diesel particulate filter during...

Details Reducing HC collection in a diesel particulate filter during... Reducing HC collection in a diesel particulate filter during...

2007-08-21

2007-08-21

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S14250E, C123S179160

Reexamination Certificate

active

11555270

ABSTRACT:
An engine (10) and a method of operating it during cold start and ensuing running using a cold start aid such as a glow plug control (24) and glow plugs (22). The control (24) monitors all glow plugs to distinguish between one that is effective and one that is ineffective. When a glow plug is disclosed to be ineffective, the engine control system (14) reduces the quantity of fuel introduced into the respective combustion chamber (12) in comparison to the quantity of fuel that would be introduced were the respective glow plug effective. This is beneficial in keeping the collection of hydrocarbons of surfaces of a diesel particulate filter (20) from increasing due to an ineffective glow plug.

REFERENCES:
patent: 4352346 (1982-10-01), Osano et al.
patent: 5483946 (1996-01-01), Hamburg et al.
patent: 5893349 (1999-04-01), Rado
patent: 6481428 (2002-11-01), Makki et al.
patent: 6978759 (2005-12-01), Iriya et al.

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