Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2011-08-16
2011-08-16
Solis, Erick (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C123S703000, C123S14250E, C123S090150
Reexamination Certificate
active
08000886
ABSTRACT:
An internal combustion engine, including an air/fuel ratio sensor in an exhaust passage detecting an air/fuel ratio in a heated state, implements a technique improving emission at a starting time, by eliminating splash of water droplets early in the exhaust passage at the starting time to advance the heating starting timing of the air/fuel ratio sensor. At the starting time, opening/closing timing of a valve is advanced from a reference opening/closing timing or the reference of the opening/closing timing of the exhaust valve after the warming-up was ended, which continues until the wall temperature of the exhaust passage near the air/fuel ratio sensor becomes equal to or higher than a water droplet disappearing temperature, at which water droplets disappear. Then, change of the opening/closing timing of the exhaust valve responding to the running state by a variable valve mechanism is started.
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Fukumoto Makoto
Hoshi Koichi
Suda Shogo
Suzuki Yoshihiko
Tomimatsu Makoto
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Solis Erick
Toyota Jidosha & Kabushiki Kaisha
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