Method and system for regenerating exhaust system filtering and catalyst components using variable high engine idle

Inactive Publication Date: 2008-07-10
DETROIT DIESEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0017]Upon sensing that the exhaust gas temperature is insufficient for the regeneration of filters, a low temperature signal is generated. When the engine control module receives such a low temperature signal, the physical temperature on the air intake tubing of the vehicle before the inlet to the compressor to the air turbocharger is sensed. Fueling strategies are provided in a data look up table in the engine control module based upon the temperature of the ambient air entering the compressor. The lower the sensed temperature of the ambient air, the more fuel is allowed to the engine, thereby causing the engine speed to increase. The increase in engine speed increase

Problems solved by technology

When the sensor generates a signal indicating that the exhaust temperature is insufficient for

Method used

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  • Method and system for regenerating exhaust system filtering and catalyst components using variable high engine idle
  • Method and system for regenerating exhaust system filtering and catalyst components using variable high engine idle
  • Method and system for regenerating exhaust system filtering and catalyst components using variable high engine idle

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Embodiment Construction

[0022]Referring now to the drawings, wherein like numerals refer to like structures, and particularly to FIG. 1, a compression ignition engine 10 for an on-highway vehicle 12 is shown schematically. The engine 10 includes an engine control module 14 that controls operation of the engine 10 and also controls exhaust component regeneration and desulfation according to the present invention as described below.

[0023]Exhaust manifold sensors 16, exhaust sensors 17 located before the aftertreatment 19 and tail pipe sensors 18 provide exhaust temperature and other gas information to the engine control module (ECM) 14 that is used in controlling exhaust component regeneration. Those skilled in the art will recognize that while sensors 16 are depicted as manifold sensors, the sensors could be located in the engine exhaust piping upstream of the after treatment. The exhaust manifold sensors 16 may provide information regarding NOx levels, air / fuel ratios (λ), temperature, and pressure. More s...

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Abstract

A method and system for regenerating particulate filters, catalyzed soot filters, and NOx adsorber catalysts for a vehicle having a compression ignition engine.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a system and method of regenerating particulate diesel engine exhaust filters.[0002]The present invention relates to a system and method of regenerating diesel engine exhaust system particulate filters and catalysts.[0003]The present invention further relates to a system and method of regenerating diesel engine exhaust system particulate filters and catalysts, as well as catalyzed and uncatalyzed cordierite, silicon carbide and sintered and unsintered substrates.[0004]The present invention further relates to a system and method of regenerating diesel engine exhaust system particulate filters and catalysts, as well as catalyzed and uncatalyzed cordierite, silicon carbide and sintered and unsintered substrates while running the diesel engine at lower rpms to save on fuel costs and reduce noise.BACKGROUND[0005]Diesel engine exhaust systems include particulate filters, catalyst soot filters, NOx adsorber catalysts, and selecti...

Claims

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Application Information

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IPC IPC(8): F01N3/023
CPCF01N3/035F01N3/0821F01N3/0842F02D41/0245Y02T10/26F02D41/1446F02D41/1467F02D2041/026F02D2041/228F02D41/083Y02A50/20Y02T10/12
Inventor BAIRD, MATTHEW THOMASBARTON, JASON THOMAS
Owner DETROIT DIESEL
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