Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/155949
Kind Code:
A1
Abstract:
In order to suppress engine stall and rotational fluctuation after engine startup in an internal combustion engine capable of using an alcohol-containing fuel, a PCM (50) corrects the fuel injection amount from an injector (11) when the amount of fluctuation in the engine speed detected by an engine speed sensor (SW2) during idling after engine startup until a linear air-fuel ratio sensor (SW4) is activated is greater than or equal to a threshold, said correction being carried out by increasing the same from the initial fuel injection amount after engine startup to a fuel injection amount that would be set if the concentration of alcohol in the fuel were at maximum or at a concentration within a prescribed range of the maximum. When the amount of fluctuation in the engine speed detected by the engine speed sensor (SW2) is greater than or equal to the threshold after the fuel injection amount is increased, the increased fuel injection amount is corrected by repeatedly decreasing the same by correction amounts smaller than during the correction by increasing until the amount of fluctuation becomes less than the threshold.
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| JPH04370340 | AIR-FUEL RATIO CONTROL DEVICE FOR ENGINE |
| WO/2014/031349 | THERMAL SYSTEM COLD START CONTROL METHOD |
Inventors:
NISHIO TAKAFUMI (JP)
YUASA MAKOTO (JP)
TAKEKOSHI KENICHI (JP)
YUASA MAKOTO (JP)
TAKEKOSHI KENICHI (JP)
Application Number:
PCT/JP2014/000854
Publication Date:
October 02, 2014
Filing Date:
February 19, 2014
Export Citation:
Assignee:
MAZDA MOTOR (JP)
International Classes:
F02D41/06; F02D19/08; F02D41/02; F02D45/00
Foreign References:
| JP2009121399A | 2009-06-04 | |||
| JP2012225323A | 2012-11-15 | |||
| JP2011163280A | 2011-08-25 | |||
| JP2010084675A | 2010-04-15 | |||
| US20080264394A1 | 2008-10-30 |
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
Etsuji Kotani (JP)
Etsuji Kotani (JP)
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