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Title: Engine combustion control at low loads via fuel reactivity stratification

A compression ignition (diesel) engine uses two or more fuel charges during a combustion cycle, with the fuel charges having two or more reactivities (e.g., different cetane numbers), in order to control the timing and duration of combustion. By appropriately choosing the reactivities of the charges, their relative amounts, and their timing, combustion can be tailored to achieve optimal power output (and thus fuel efficiency), at controlled temperatures (and thus controlled NOx), and with controlled equivalence ratios (and thus controlled soot). At low load and no load (idling) conditions, the aforementioned results are attained by restricting airflow to the combustion chamber during the intake stroke (as by throttling the incoming air at or prior to the combustion chamber's intake port) so that the cylinder air pressure is below ambient pressure at the start of the compression stroke.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1415024
Assignee:
Wisconsin Alumni Research Foundation (Madison, WI) SNL
Patent Number(s):
9,850,812
Application Number:
14/506,766
Contract Number:
AC04-94AL85000
Resource Relation:
Patent File Date: 2014 Oct 06
Research Org:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Other works cited in this record:

Method of Igniting and Regulating Combustion for Internal Combustion Engines
patent, April 1901

Dual-Fuel Engines and Processes of Operating Same
patent, October 1956

Rotary Internal Combustion Engine
patent, June 1961

Method and apparatus for controlling the air flow in an internal combustion engine
patent, October 1976

Engine intake stratifier
patent, April 1979

Rotary internal combustion engine with integrated supercharged fuel-air induction
patent, April 1987

Stratified charge injection for gas-fueled rotary engines
patent, March 1992

Control device for internal combustion engine
patent, May 1994

Intensifier-injector for gaseous fuel for positive displacement engines
patent, May 1994

Quasiturbine zero vibration-continuous combustion rotary engine compressor or pump
patent, December 2000

Fuel injection control system for direct injection-spark ignition engine
patent, June 2001

Control device for direct injection engine and an injection engine provided with a controller
patent, June 2001

Fuel feed system for a spark-ignition internal combustion engine and a method of operating such an internal combustion engine
patent, November 2001

Premixed charge compression ignition engine with variable speed SOC control and method of operation
patent, February 2003

Diesel engine emissions reduction by multiple injections having increasing pressure
patent, March 2003

Multiple operating mode engine and method of operation
patent, May 2003

Gas-fueled, compression ignition engine with maximized pilot ignition intensity
patent, July 2003

Flexible vane rotary engine
patent, December 2003

Internal combustion engine using premixed combustion of stratified charges
patent, December 2003

Method and apparatus for fuel injection into an internal combustion engine
patent, January 2004

Rotary engine
patent, April 2004

Spark ingition stratified combustion internal combustion engine
patent, April 2004

Engine valve actuation for combustion enhancement
patent, May 2004

Fuel injection controlling apparatus for engine
patent, November 2004

Rotary piston engine and method of operation
patent, May 2005

Rotary piston machine
patent, January 2006

Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine
patent, April 2006

Multi-fuel compression ignition engine
patent, May 2006

Compression-ignited IC engine and method of operation
patent, October 2006

Fuel mixture stratification as a method for improving homogeneous charge compression ignition engine operation
patent, October 2006

Balanced rotary internal combustion engine or cycling volume machine
patent, February 2007

Controlling engine operation with a first and second fuel
patent, October 2007

Engine valve actuation for combustion enhancement
patent, March 2008

Internal combustion engine
patent, May 2008

Controlling engine operation with a first and second fuel
patent, August 2008

Control apparatus for internal combustion engine
patent, August 2008

Self-igniting internal combustion engine
patent, October 2008

Dual fuel engine
patent, November 2008

Multiple combustion mode engine using direct alcohol injection
patent, December 2008

Adaptive engine injection for emissions reduction
patent, December 2008

Flexible fuel engines with exhaust gas recirculation for improved engine efficiency
patent, February 2009

Multi-fuel multi-injection system for an internal combustion engine
patent, May 2010

Combustion control system for internal combustion engine
patent, May 2010

Fuel supply device for internal combustion and control method therefor
patent, August 2010

Combustion control utilizing exhaust throttling
patent, January 2011

Method of controlling valve timing of diesel engine
patent, October 2011

System and method for adjusting fuel reactivity
patent, June 2015

Engine combustion control via fuel reactivity stratification
patent, July 2015

Engine valve actuation for combustion enhancement
patent-application, July 2003

Dual fuel engine having multiple dedicated controllers connected by a broadband communications link
patent-application, October 2003

Internal Combustion Engine Using Premixed Combustion Of Stratified Charges
patent-application, December 2003

Method and computer programme for operating an internal combustion engine and an internal combustion engine
patent-application, February 2004

Direct-injection spark-ignition internal combustion engine
patent-application, November 2005

Fuel management system for variable ethanol octane enhancehment of gasoline engines
patent-application, May 2006

Method for controlling compression ignition internal combustion engine
patent-application, August 2006

Method for load transient control between lean and stoichiometric combustion modes of direct-injection engines with controlled auto-ignition combustion
patent-application, September 2006

Engine valve actuation for combustion enhancement
patent-application, September 2006

Method for operating and internal combustion engine
patent-application, October 2006

Method of HCCI and SI combustion control for a direct injection internal combustion engine
patent-application, November 2006

System and method for engine with fuel vapor purging
patent-application, May 2007

Purge system for ethanol direct injection plus gas port fuel injection
patent-application, May 2007

Method for operating an internal combustion engine
patent-application, July 2007

Method for Operating an Internal Combustion Engine
patent-application, September 2007

Controlling Engine Operation With A First And Second Fuel
patent-application, November 2007

Method Of Controlling Combustion In An HCCI Engine
patent-application, January 2008

Multi-Mode Internal Combustion Engine
patent-application, February 2008

Fuel Injection System of Internal Combustion Engine
patent-application, March 2008

Internal Combustion Engine And Combustion Method Of The Same
patent-application, October 2008

Adaptive Engine Injection For Emissions Reduction
patent-application, December 2008

Internal Combustion Engine
patent-application, February 2009

Staggered Intake Valve Opening with Bifurcated Port to Eliminate Hydrogen Intake Backfire
patent-application, April 2009

Fuel management for vehicles equipped with multiple tanks for different grades of fuel
patent-application, July 2009

Control Device Of Internal Combustion Engine
patent-application, September 2009

System and method of operating internal combustion engines at fuel rich low-temperature- combustion mode as an on-board reformer for solid oxide fuel cell-powered vehicles
patent-application, November 2009

Minimizing Alcohol Use in High Efficiency Alcohol Boosted Gasoline Engines
patent-application, March 2010

Gasoline Engine
patent-application, June 2010

Fuel Tank System for Direct Ethanol Injection Octane Boosted Gasoline Engine
patent-application, August 2010

Cerium Dioxide Nanoparticle-Containing Fuel Additive
patent-application, August 2010

Internal Combustion Engine
patent-application, October 2010

Control Device For Internal Combustion Engine
patent-application, October 2010

Augmenter For Compound Compression Engine
patent-application, October 2010

Method Of Preparing Cerium Dioxide Nanoparticles
patent-application, March 2011

Engine Combustion Control Via Fuel Reactivity Stratification
patent-application, August 2011

Method Of Conditioning An Internal Combustion Engine
patent-application, February 2013

Cerium Dioxide Nanoparticle-Containing Fuel Additive
patent-application, May 2013

Fuel Reactivity Stratification In Rotary Diesel Engines
patent-application, July 2013

Method Of Conditioning An Internal Combustion Engine
patent-application, September 2013

Split-Cycle, Reactivity Controlled Compression Ignition Engine and Method
patent-application, January 2014

Reactivity Controlled Compression Ignition Engine with Exhaust Gas Recirculation
patent-application, January 2014

Reactivity Controlled Compression Ignition Engine with Intake Cooling Operating on a Miller Cycle and Method
patent-application, January 2014

Dual Mode Engine Using Two or More Fuels and Method for Operating Such Engine
patent-application, January 2014

Reactivity Controlled Compression Ignition Engine Operating on a Miller Cycle with Low Pressure Loop Exhaust Gas Recirculation System and Method
patent-application, January 2014

Temperature-Controlled Combustion System and Method
patent-application, January 2014

In-Cylinder Fuel Blending of Gasoline/Diesel for Improved Efficiency and Lowest Possible Emissions on a Multi-Cylinder Light-Duty Diesel Engine
conference, October 2010

An Experimental Investigation of Fuel Reactivity Controlled PCCI Combustion in a Heavy-Duty Engine
journal, April 2010
  • Hanson, Reed M.; Kokjohn, Sage L.; Splitter, Derek A.
  • SAE International Journal of Engines, Vol. 3, Issue 1, p. 700-716
  • DOI: 10.4271/2010-01-0864

Fuel Effects on Reactivity Controlled Compression Ignition (RCCI) Combustion at Low Load
journal, April 2011
  • Hanson, Reed; Kokjohn, Sage; Splitter, Derek
  • SAE International Journal of Engines, Vol. 4, Issue 1, p. 394-411
  • DOI: 10.4271/2011-01-0361

Dual-Fuel PCI Combustion Controlled by In-Cylinder Stratification of Ignitability
conference, April 2006

Experiments and Modeling of Dual-Fuel HCCI and PCCI Combustion Using In-Cylinder Fuel Blending
journal, October 2009
  • Kokjohn, Sage L.; Hanson, Reed M.; Splitter, Derek A.
  • SAE International Journal of Engines, Vol. 2, Issue 2, p. 24-39
  • DOI: 10.4271/2009-01-2647

Fuel Reactivity Controlled Compression Ignition (RCCI) Combustion in Light- and Heavy-Duty Engines
journal, April 2011
  • Kokjohn, Sage; Hanson, Reed; Splitter, Derek
  • SAE International Journal of Engines, Vol. 4, Issue 1, p. 360-374
  • DOI: 10.4271/2011-01-0357

Use of Detailed Kinetics and Advanced Chemistry-Solution Techniques in CFD to Investigate Dual-Fuel Engine Concepts
journal, April 2011
  • Puduppakkam, Karthik V.; Liang, Long; Naik, Chitralkumar V.
  • SAE International Journal of Engines, Vol. 4, Issue 1, p. 1127-1149
  • DOI: 10.4271/2011-01-0895

An Optical Investigation of Ignition Processes in Fuel Reactivity Controlled PCCI Combustion
journal, April 2010
  • Splitter, Derek; Kokjohn, Sage; Rein, Keith
  • SAE International Journal of Engines, Vol. 3, Issue 1, p. 142-162
  • DOI: 10.4271/2010-01-0345

High Efficiency, Low Emissions RCCI Combustion by Use of a Fuel Additive
journal, August 2010
  • Splitter, Derek; Reitz, Rolf D.; Hanson, Reed
  • SAE International Journal of Fuels and Lubricants, Vol. 3, Issue 2, p. 742-756
  • DOI: 10.4271/2010-01-2167

Reactivity Controlled Compression Ignition (RCCI) Heavy-Duty Engine Operation at Mid-and High-Loads with Conventional and Alternative Fuels
conference, April 2011

Modeling Diesel Engine NOx and Soot Reduction with Optimized Two-Stage Combustion
conference, April 2006

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