Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2009-03-20
2011-10-11
Vo, Hieu T (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S103000, C123S399000
Reexamination Certificate
active
08036818
ABSTRACT:
In a general-purpose engine having a throttle valve installed in an air intake passage connected to a combustion chamber, sucked air mixing with fuel to generate an air-fuel mixture to be ignited to drive a piston to rotate a crankshaft connected to a load, a first warm-up time period during which the engine is warmed up and a second warm-up time period which is longer than the first time period are determined based on detected engine temperature and a fuel quantity is increased during the first time period. The operation of the motor is controlled such that a change rate of throttle valve opening is limited within a range until the measured time exceeds the second warm-up time period after it exceeded the first time period. With this, it becomes possible to complete warm-up operation in a short period of time, while improving rate of fuel consumption and emission performance.
REFERENCES:
patent: 4440119 (1984-04-01), Kobayashi et al.
patent: 5537964 (1996-07-01), Hoshiba
patent: 2010/0269787 (2010-10-01), Shimamura et al.
patent: 5-059992 (1993-03-01), None
patent: 7-077106 (1995-03-01), None
Fukushima Tomoki
Kasai Akihito
Shimamura Hideaki
Yamamura Makoto
Blackman William D.
Carrier Joseph P.
Carrier Blackman & Associates P.C.
Honda Motor Co. Ltd.
Vo Hieu T
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