Internal-combustion engines – Engine speed regulator – Charge volume varying
Reexamination Certificate
2007-06-05
2011-11-08
Vo, Hieu T (Department: 3747)
Internal-combustion engines
Engine speed regulator
Charge volume varying
Reexamination Certificate
active
08051833
ABSTRACT:
The invention provides a throttle valve control apparatus of an internal combustion engine having at least a first cylinder group (B1) and a second cylinder group (B2). A first throttle valve (S1) is arranged in an intake passage (31) of the first cylinder group and a second throttle valve (S2) is arranged in an intake passage (32) of the second cylinder group. The throttle valve control apparatus includes a controller that, when there is a demand to switch a combustion air-fuel ratio of the internal combustion engine without changing engine output, first changes an opening amount of the first throttle valve, and then changes an opening amount of the second throttle valve.
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Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
Vo Hieu T
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