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Title: Method for operating a spark-ignition, direct-injection internal combustion engine

Patent ·
OSTI ID:1183446
; ; ; ;

A spark-ignition, direct-injection internal combustion engine is coupled to an exhaust aftertreatment system including a three-way catalytic converter upstream of an NH3-SCR catalyst. A method for operating the engine includes operating the engine in a fuel cutoff mode and coincidentally executing a second fuel injection control scheme upon detecting an engine load that permits operation in the fuel cutoff mode.

Research Organization:
GM Global Technology Operations LLC, Detroit, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0003379
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Number(s):
9,046,051
Application Number:
13/156,655
OSTI ID:
1183446
Country of Publication:
United States
Language:
English

References (23)

Fuel injection control system for engine patent March 1998
Direct injection engine fuel injection control apparatus and method patent May 2001
Method for controlling catalytic converter heat losses during coasting shutoff patent January 2003
Emission control apparatus of internal combustion engine, and method for retarding deterioration of emission control catalyst patent December 2004
Catalyst temperature control on an electrically throttled engine patent January 2007
Method and system for controlling temperatures of exhaust gases emitted from internal combustion engine to facilitate regeneration of a particulate filter patent December 2008
Method for operating an internal combustion engine patent September 2009
Vehicle power train control apparatus patent November 2009
System for assisting in the regeneration of motor vehicle depollution means integrated in an exhaust line of a vehicle diesel engine patent December 2009
Catalyst system for the reduction of NOx and NH3 emissions patent January 2010
Fuel injection control device for diesel engine patent February 2010
Hybrid vehicle and control method thereof patent June 2011
Exhaust purifying apparatus and exhaust purifying method for internal combustion engine patent December 2011
Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines patent February 2013
Technique for production of ammonia on demand in a three way catalyst for a passive selective catalytic reduction system patent April 2013
Cylinder deactivation to reduce fuel enrichment after fuel cutoff modes patent March 2014
Method for managing ammonia slip patent August 2014
System and Method for Reducing NOx Emissions patent-application March 2008
Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines patent-application February 2010
Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines patent-application May 2010
Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines patent-application May 2010
Technique for Production of Ammonia on Demand in a Three Way Catalyst for a Passive Selective Catalytic Reduction System patent-application July 2010
Fuel Efficient Ammonia Generation Strategy for Lean-Burn Engines Utilizing Passive NH3-SCR for the Control of NOX patent-application August 2011

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Related Subjects

33 ADVANCED PROPULSION SYSTEMS