Toyota Jidosha Kabushiki Kaisha

Katsutoshi Tanei

Rihito Kaneko

Isao Takagi

Masanao Idogawa

Noboru Takagi

Kenji Kasashima

Koichi Kimura

Masashi Yoshimi

Hirohisa Kishi

Tomoyuki Uchiyama

Yoshiyuki Tanaka

Masae O-Hori

Masae c/o Toyota Jidosha Kabushiki Kaisha O-Hori

An ECU executes a program including the steps of calculating a correction coefficient K () having a value that is greater as an accelerator pedal position is greater, calculating a first throttle position () as a product of a reference value BSE () and the correction coefficient K (), calculating a correction coefficient K () having a value that is greater as the accelerator pedal position is greater, and calculating a second throttle position () as a product of a reference value BSE () and the correction coefficient K (). If the throttle position is equal to or higher than the first throttle position (), a target position lower than a provisional target position set in accordance with the accelerator pedal position is set. If the throttle position is set to the second throttle position (), the throttle position is maintained at the second throttle position ().

Control device and control method for air amount regulating mechanism

A control apparatus for an internal combustion engine according to the invention obtains a first index that indicates the amount of fuel adhering to the wall surface of an intake passage, using intake valve timing; obtains a correction value that reduces the first index, using exhaust valve timing and the intake valve timing; and calculates a second index that indicates the amount of fuel adhering to the wall surface of the intake passage, using the correction value. The control apparatus controls the amount of fuel to be injected based on at least one of the first index and the second index.

Control apparatus for internal combustion engine

An apparatus controls actual actuation of each of a first and a second valve to the corresponding target actuation. A first computing portion computes the target actuation of the first valve and a target valve overlapping amount according to a engine operational state. A second computing portion computes a requested actuation of the second valve based on the target valve overlapping amount and the target actuation of the first valve. When the requested actuation is out of the permitted range of the second valve actuation, the second computing portion corrects the target actuation of the first valve based on the margin between the requested actuation and a limit of the permitted range. Hence, the engine operational state is maintained in a preferable state.

Control apparatus and control method for internal combustion engine valve actuation

An apparatus, method, and recording medium for controlling starting of an internal combustion engine. The apparatus for controlling starting of an internal combustion engine is provided with a clutch for connecting and disconnecting a motor and the internal combustion engine, which is installed in a vehicle. When starting the internal combustion engine, the clutch is released and the motor is maintained in an actuated state, and the clutch is engaged after the motor enters a predetermined rotation state.

Apparatus, method, and recording medium for controlling starting of an internal combustion engine

Based on results of a knock control for adjusting ignition timing in accordance with the occurrence of knocking, an electronic control unit computes deposit required ignition timing akgrg, which is ignition timing determined by taking adhesion of deposits in an internal combustion engine into consideration. Based on the deposit required ignition timing akgrg, the electronic control unit reduces a vvt allowable variable range of a target VVT advancement amount, which is a control target value of a variable valve timing mechanism. The electronic control unit corrects a required ignition timing based on the actual VVT advancement amount vt, which is chanted according to the reduction of the allowable variable range of the target VVT advancement amount. As a result, problems resulting from the adhesion of deposits are effectively avoided.

An upper limit guard is set for a valve overlap amount according to a KCS learning value used to retard-correct an ignition timing in order to suppress knock, and an engine load. As a result, it is possible to make the upper limit guard value a value able to restrict the valve overlap amount to a value equal to, or less than, a value at which an internal EGR amount does not become excessive during a retard-correction of the ignition timing. By applying the upper limit guard to the valve overlap amount using the upper limit guard value, it is possible to suppress the valve overlap amount from increasing from the optimum value following a retard-correction of the ignition timing, as well as suppress the value of overlap amount from being reduced when it is not deviating from the optimum value and is below the upper limit guard value.

Growing community of inventors

Aichi-gun, Japan

Katsutoshi Tanei