Title:
FUEL INJECTION CONTROL METHOD AND FUEL INJECTION DEVICE OF SPARK IGNITION TYPE INTERNAL-COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/058452
Kind Code:
A1
Abstract:
In a spark ignition type internal-combustion engine (1) provided with a directly-above injection type fuel injection device, a fuel temperature (Tfuel) at a distal end portion of a fuel injection valve (10) is estimated from engine operating conditions and the like and is compared with a flash boiling temperature (Tfb) set on the basis of an intake pressure. If the fuel temperature is higher than the flash boiling temperature (Tfb), a flash boiling phenomenon occurs in which the fuel boils and vaporizes suddenly in the injection hole, causing penetration of spray mist (F) to become shorter, and the fuel injection timing (IT) in the intake stroke is therefore adjusted to the advance angle side. This improves the fuel efficiency
Inventors:
IMAOKA YOSHIHIRO (JP)
IWABUCHI YOSHIHIKO (JP)
IWABUCHI YOSHIHIKO (JP)
Application Number:
PCT/JP2017/033897
Publication Date:
March 28, 2019
Filing Date:
September 20, 2017
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02M51/00; F02D41/04
Foreign References:
| JP2002227685A | 2002-08-14 | |||
| JP2009102997A | 2009-05-14 | |||
| JP2009102998A | 2009-05-14 | |||
| JP2008208811A | 2008-09-11 | |||
| JP2006516316A | 2006-06-29 | |||
| JP2014015907A | 2014-01-30 | |||
| JP2006170129A | 2006-06-29 | |||
| JP2003322046A | 2003-11-14 |
Other References:
See also references of EP 3686421A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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