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Title:
FUEL INJECTION DEVICE FOR DIESEL ENGINE
Document Type and Number:
Japanese Patent JP2009228599
Kind Code:
A
Abstract:

To sufficiently reduce generation of NOx and soot by promoting atomization of fuel spray and intensification of spray penetration in a combustion chamber vertical direction after impingement on a wall surface irrespective of swirl intensity in the combustion chamber.

A fuel injection nozzle 15 includes a plurality of injection hole group 20 comprising two injection holes 21, 22 respectively. The distance between the injection holes 21, 22 and the angle between the injection holes 21, 22 are set in such a manner that the distance X between wall surface impingement points of the injection holes 21, 22 of each injection hole group 20 of the fuel injection nozzle 15 making spray penetration in the combustion chamber vertical direction after impingement on the combustion chamber wall surface local maximum is set between the distance between the impingement points in an operation zone in which swirl intensity in a combustion chamber is minimized and the distance X between the impingement points in an operation zone in which the swirl intensity is maximized, and that spray penetration can be maintained near a local maximum value therebetween.


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WO/2002/086309FUEL-INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES
Inventors:
HORII HIDEYA
NAKAMOTO JINJU
SUEOKA KENYA
MAEKAWA KOTA
FUKUDA DAISUKE
MARUHARA MASASHI
Application Number:
JP2008076325A
Publication Date:
October 08, 2009
Filing Date:
March 24, 2008
Export Citation:
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Assignee:
MAZDA MOTOR
International Classes:
F02M61/18
Domestic Patent References:
JP2004068726A2004-03-04
JP2006299885A2006-11-02
JP2001165017A2001-06-19
JP2007092634A2007-04-12
JP2006046265A2006-02-16
JPH0214423U1990-01-30
JP2009062971A2009-03-26
JP2008267155A2008-11-06
JPH10176632A1998-06-30
JP2004068726A2004-03-04
JP2006299885A2006-11-02
JP2001165017A2001-06-19
JP2007092634A2007-04-12
JP2006046265A2006-02-16
JPH0214423U1990-01-30
JP2009062971A2009-03-26
JP2008267155A2008-11-06
JPH10176632A1998-06-30
Attorney, Agent or Firm:
Junichi Shindo



 
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