Toyota Jidosha Kabushiki Kaisha

Kazuki Tsuruoka

Akihiro Katayama

Yuki Nose

Harufumi Muto

Yosuke Hashimoto

Hitoshi Matsunaga

Yoshihisa Oda

Koji Okamura

Sei Maruta

Tatsuki Kitaoka

The vehicle controller controls a vehicle. The vehicle includes a transmission and an internal combustion engine that has a variable valve actuation device. The vehicle controller includes an execution device. The execution device executes first and second gear ratio adjustment processes and first and second intake VVT adjustment processes. The first intake VVT adjustment process includes adjusting the intake valve timing such that the internal combustion engine is operated in an Atkinson cycle. The second intake VVT adjustment process includes setting the intake valve timing such that the closing timing of the intake valve is more advanced than in a case in which the first intake VVT adjustment process is executed.

Vehicle controller and method for vehicle control method

At the time of stopping operation of the vehicle, the pressures inside of the fuel tank () and inside of the canister () detected at every constant time are stored in the storage device. A learned neural network using the pressures inside the fuel tank () and inside the canister () for each fixed time stored in the storage device and the atmospheric pressure as input parameters of the neural network and using a case where perforation occurs in the system causing fuel vapor to leak as a truth label is stored. At the time of stopping operation of the vehicle, a perforation abnormality causing fuel vapor to leak is detected from these input parameters by using the learned neural network.

Abnormality detection device of fuel vapor escape prevention system

When a request for temperature increase of a three-way catalyst is made, a CPU executes dither control in which one of a plurality of cylinders is set as a rich combustion cylinder with a richer air-fuel ratio than a stoichiometric air-fuel ratio and the remaining cylinders are set as lean combustion cylinders with a leaner air-fuel ratio than the stoichiometric air-fuel ratio. When not executing the dither control, the CPU learns a rich learning value that is a learning value of a degree of a rich imbalance based on an upstream-side air-fuel ratio. When the rich learning value is greater than or equal to a predetermined value, the CPU prohibits the dither control.

Control apparatus for internal combustion engine

A control apparatus for an internal combustion engine executes a detection process upon satisfaction of all detection preconditions including a stopped condition that a temperature-increasing process has been stopped; determines Whether all the detection preconditions except the stopped condition are satisfied, during the temperature-increasing process; executes a gradually-changing-and-stopping process of stopping the temperature-increasing process by gradually changing the air-fuel ratios in the cylinders to a target air-fuel ratio set based on an operation state of the internal combustion engine after stop of the temperature-increasing process, when a negative determination is made and a temperature-increasing process stop request has been issued; and executes a promptly-stopping process of stopping the temperature-increasing process by changing the air-fuel ratios in the cylinders to the target air-fuel ratio within a shorter time period than that of the gradually-changing-and-stopping process, when an affirmative determination is made and a temperature-increasing process stop request has been issued.

A control apparatus for an internal combustion engine (i) acquires a rotational speed signal correlated with a rotational speed of the internal combustion engine, (ii) extracts, from the acquired rotational speed signal, at least first-order and lower-order than the first-order components of the rotational speed signal, (iii) extracts, from the acquired rotational speed signal, at least an n-th-order component of the rotational speed signal, (iv) determines that no disturbance has occurred when a first-order parameter regarding a magnitude of an amplitude of the extracted first-order and lower-order than the first-order components is smaller than a first threshold, and (v) determines that a disturbance has occurred when the first-order parameter is equal to or larger than the first threshold and an n-th-order parameter regarding an amplitude of the extracted n-th-order component is equal to or larger than a second threshold.

A control apparatus includes an electronic control unit configured to: carry out a first diagnosis and a second diagnosis; control a first injection valve and a second injection valve such that fuel is injected from both the first injection valve and the second injection valve, and such that a fuel injection amount from the second injection valve is not reduced and a fuel injection amount from the first injection valve is reduced, when carrying out the first diagnosis; and control the first injection valve such that fuel is not injected from the first injection valve, and control the second injection valve such that the fuel injection amount from the second injection valve is reduced in a state where fuel is injected from the second injection valve, when carrying out the second diagnosis.

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Miyoshi, Japan

Kazuki Tsuruoka