Global Patent Index - EP 2077312 A1

EP 2077312 A1 20090708 - Fuels for homogeneous charge compression ignition combustion engine

Title (en)

Fuels for homogeneous charge compression ignition combustion engine

Title (de)

Brennstoffe für homogen geladene verdichtungsgezündete Maschinen

Title (fr)

Carburants pour moteurs à allumage par compression de mélange homogène

Publication

EP 2077312 A1 20090708 (EN)

Application

EP 08021384 A 20081209

Priority

JP 2007324363 A 20071217

Abstract (en)

The present invention provides a fuel for a homogeneous charge compression auto-ignition combustion engine which is capable of controlling the combustion reaction during homogeneous charge compression auto-ignition combustion to improve the engine thermal efficiency. The fuel satisfies all of the following characteristic requirements (1) to (6) and the following requirement (7) or (8): (1) the total content of C5 to C10 normal paraffins is 25 percent by volume or more, and 70 percent by volume or less; (2) the total content of C6 to C11 aromatic hydrocarbons is 30 percent by volume or more, and 75 percent by volume or less; (3) the content of olefinic hydrocarbons is 20 percent by volume or less; (4) the content of oxygenates is 5 percent by mass or less in terms of oxygen; (5) the research octane number is 70 or greater, and less than 92; (6) the initial boiling point and end point in distillation characteristics are 30°C or higher, and 220°C or lower, respectively; (7) the averaged maximum pressure rise rate of the fuel over continuous 400 cycles is smaller by 15 percent or more, comparing with that of a primary reference fuel (PRF) which exhibits the same indicated mean effective pressure (IMEP) and crank angle of 50% burn of high temperature heat release (HTHR CA50) as the fuel under the same engine operating conditions; and (8) the averaged IMEP of the fuel over continuous 400 cycles is increased by 20 percent or more, comparing with that of a primary reference fuel (PRF) with the same research octane number as the fuel, the IMEPs of the fuel and PRF being measured at the same maximum pressure rise rate under the same engine operating conditions.

IPC 8 full level

C10L 1/06 (2006.01); C10L 1/08 (2006.01); C10L 1/18 (2006.01)

CPC (source: EP KR US)

C10L 1/026 (2013.01 - EP US); C10L 1/08 (2013.01 - EP KR US); C10L 1/18 (2013.01 - EP US); C10L 1/182 (2013.01 - KR); C10L 1/1824 (2013.01 - EP US); C10L 1/183 (2013.01 - KR); C10L 1/1852 (2013.01 - EP US); C10L 1/19 (2013.01 - EP KR US)

Citation (applicant)

Citation (search report)

  • [X] KALGHATGI G T ET AL: "Combustion Limits and Efficiency in a Homogeneous Charge Compression Ignition Engine", INTERNATIONAL JOURNAL OF ENGINE RESEARCH, PROFESSIONAL ENGINEERING PUBLISHING, GB, vol. 7, no. 3, 1 January 2006 (2006-01-01), pages 215 - 236, XP009112061, ISSN: 1468-0874
  • [A] LU X ET AL: "Experimental study on the auto-ignition and combustion characteristics in the homogeneous charge compression ignition (HCCI) combustion operation with ethanol/n-heptane blend fuels by port injection", FUEL, IPC SCIENCE AND TECHNOLOGY PRESS, GUILDFORD, GB, vol. 85, no. 17-18, 1 December 2006 (2006-12-01), pages 2622 - 2631, XP025235878, ISSN: 0016-2361, [retrieved on 20061201]
  • [A] GEN SHIBATA ET AL: "Correlation of Low Temperature Heat Release with Fuel Composition and HCCI Engine Combustion", SAE INTERNATIONAL SP-1963,, 1 April 2005 (2005-04-01), pages 237 - 250, XP009112099
  • [A] LU ET AL: "Experimental study and chemical analysis of n-heptane homogeneous charge compression ignition combustion with port injection of reaction inhibitors", COMBUSTION AND FLAME, ELSEVIER SCIENCE PUBLISHING CO., INC., NEW YORK, NY.; US, vol. 149, no. 3, 12 April 2007 (2007-04-12), pages 261 - 270, XP022026829, ISSN: 0010-2180
  • [A] DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; LU X-C ET AL: "Parametric study on emissions and heat release analysis of combustion of HCCI engines fueled with isopropanol/n-heptane blend fuels", XP002514587, Database accession no. E20073210754098 & RANSHAO KEXUE YU JISHU/JOURNAL OF COMBUSTION SCIENCE AND TECHNOLOGY JUNE 2007 TIANJIN UNIVERSITY CN, vol. 13, no. 3, June 2007 (2007-06-01), pages 191 - 198
  • [PXD] GEN SHIBATA ET AL: "Dual Phase High Temperature Heat Release Combustion", SAE INTERNATIONAL SP-2182,, 1 January 2008 (2008-01-01), pages 1 - 12, XP009112098
  • [X] ANDRAE J ET AL: "Co-oxidation in the auto-ignition of primary reference fuels and n-heptane/toluene blends", COMBUSTION AND FLAME, ELSEVIER SCIENCE PUBLISHING CO., INC., NEW YORK, NY.; US, vol. 140, no. 4, 1 March 2005 (2005-03-01), pages 267 - 286, XP004776824, ISSN: 0010-2180

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

EP 2077312 A1 20090708; CN 101503637 A 20090812; CN 101503637 B 20130821; JP 2009167398 A 20090730; JP 5355064 B2 20131127; KR 20090065458 A 20090622; US 2009151236 A1 20090618

DOCDB simple family (application)

EP 08021384 A 20081209; CN 200810107455 A 20081217; JP 2008321239 A 20081217; KR 20080128060 A 20081216; US 33589408 A 20081216