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AssigneesToyota Jidosha Kabushiki Kaisha, Denso Corporation
InventorsKeizo Hiraku, Noboru Takagi, Kiyoo Hirose, Hirohiko Yamada
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An engine has a variable valve actuation mechanism that varies lift characteristics of an intake valve. An idle speed control apparatus has a control section for controlling an intake air amount of the engine in an idle state for adjusting an actual engine speed to a target engine speed. The control section sets a control amount related to control of the intake air amount in correspondence with the lift characteristics, which are varied by the variable valve actuation mechanism. Accordingly, the engine speed in the idle state is effectively controlled in correspondence with changes of the lift characteristics.
An idle speed control method for an internal combustion engine including an intake passage, an intake valve, and a variable valve actuation mechanism that varies lift characteristics of the intake valve, the method comprising:
An idle speed control apparatus for an internal combustion engine including an intake passage, an intake valve, and a variable valve actuation mechanism that varies lift characteristics of the intake valve, the apparatus comprising:
Dependencies are inferred from the claim text.