ENGINE CONTROL DEVICE, AND ENGINE CONTROL METHOD

WIPO Patent Application WO/2014/057825

A1

Deterioration in fuel economy, combustion performance, and the like due to excessive split injection is suppressed while the amount of attached fuel is decreased by split injection. A split injection start timing (IT1_A) in the intake stroke is determined in accordance with the amount of intake air and the engine rotation speed (S103). Meanwhile, a completion timing (IT1_B) is advanced (S104) when the coolant temperature (TW) is not less than a predetermined water temperature (K_TW) compared with when the coolant temperature (TW) is less than the predetermined water temperature (K_TW), and a total injection period (IT1) is calculated from the start timing (IT1_A) and the completion timing (IT1_B)(S105). On the basis of a required injection period (IT_REQ)(S106) and the number of times of split injection (I_TIMES)(S107), a split injection pulse period (IT1_SP(n)) is calculated (S108) and further a split injection rest period (IT1_RES(n)) is calculated (S109). When the split injection rest period (IT1_RES(n)) is shorter than a required rest period (RES_K), the number of times of split injection (I_TIMES) is decreased (S111→S113).

OGATA KENICHIROH (JP)
OKAMOTO TAKASHI (JP)
NISHITA SHIGERU (JP)
ARIHARA YOSHINOBU (JP)
KIHARA YUSUKE (JP)
SUKEGAWA YOSHIHIRO (JP)

PCT/JP2013/076464

April 17, 2014

September 30, 2013

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

F02D41/34; F02D41/02; F02D41/04; F02D41/38; F02D45/00

JP2006183537A	2006-07-13
JPH11270388A	1999-10-05
JP2011052670A	2011-03-17
JP2012184661A	2012-09-27
JP2002130024A	2002-05-09
JP2012002066A	2012-01-05
JP2009250194A	2009-10-29

INOUE Manabu et al. (JP)
Manabu Inoue (JP)

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