Engine automatic stop-start controller

Details Engine automatic stop-start controller Engine automatic stop-start controller

2009-08-03

2010-12-07

Huynh, Hai H (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S111000, C123S406270, C123S406530, C123S179300, C123S179500

Reexamination Certificate

active

07848875

ABSTRACT:
A first ignition cylinder that performs ignition first is set based on an engine stop position in automatic start. Existence
onexistence of a misfire in the first ignition cylinder is determined based on whether a difference ΔNe between engine rotation speed at a predetermined crank angle in an interval from timing immediately before the ignition to timing immediately after the ignition of the first ignition cylinder (e.g., at TDC of first ignition cylinder) and engine rotation speed at a predetermined crank angle before ignition of a second ignition cylinder (e.g., at TDC of second ignition cylinder) is equal to or smaller than a predetermined misfire determination threshold value Nef. When misfire time number of the first ignition cylinder exceeds a predetermined value, fuel supply to the first ignition cylinder is prohibited and the automatic start is started from the second ignition cylinder.

REFERENCES:
patent: 7027911 (2006-04-01), Nishikawa et al.
patent: 7177755 (2007-02-01), Nishikawa et al.
patent: 2005-264813 (2005-09-01), None
patent: 4029474 (2007-10-01), None
patent: 2008-133793 (2008-06-01), None
patent: WO 2010/016201 (2010-02-01), None
Japanese Office Action dated May 20, 2010, issued in corresponding Japanese Application No. 2008-205952, with English translation.
U.S. Appl. No. 12/536,799, Nakai, filed Aug. 6, 2009.
U.S. Appl. No. 12/535,149, Nakai, filed Aug. 4, 2009.

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