US 11,939,930 B2
Vehicle controller and method for vehicle control method
Koji Okamura, Aichi-ken (JP); Kazuki Tsuruoka, Nagoya (JP); and Hitoshi Matsunaga, Anjo (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on May 1, 2023, as Appl. No. 18/310,082.
Claims priority of application No. 2022-079352 (JP), filed on May 13, 2022.
Prior Publication US 2023/0366360 A1, Nov. 16, 2023
Int. Cl. F02D 41/02 (2006.01); F02D 13/02 (2006.01); F02D 41/00 (2006.01)
CPC F02D 41/023 (2013.01) [F02D 13/0234 (2013.01); F02D 41/0002 (2013.01); F02D 2041/001 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A vehicle controller configured to control a vehicle including an internal combustion engine and a transmission, wherein
the internal combustion engine includes:
a cylinder;
an intake passage through which air drawn into the cylinder flows;
an intake valve that selectively opens and closes the intake passage; and
a variable valve actuation device that varies an intake valve timing that is an opening-closing timing of the intake valve,
the transmission receives an output torque of the internal combustion engine,
the vehicle controller comprises an execution device configured to control the internal combustion engine and the transmission, and
the execution device is configured to execute:
a first gear ratio adjustment process that adjusts a gear ratio of the transmission;
a second gear ratio adjustment process that adjusts the gear ratio of the transmission such that a response delay of a change in an acceleration of the vehicle with respect to a change in an accelerator pedal operation amount is smaller than in a case in which the gear ratio of the transmission is adjusted by the first gear ratio adjustment process;
a first intake VVT adjustment process that adjusts, when the gear ratio of the transmission is adjusted by the first gear ratio adjustment process in a situation in which the internal combustion engine is operating in a predetermined operating region, the intake valve timing such that the internal combustion engine is operated in an Atkinson cycle; and
a second intake VVT adjustment process that adjusts, when the gear ratio of the transmission is adjusted by the second gear ratio adjustment process in the situation in which the internal combustion engine is operating in the predetermined operating region, the intake valve timing such that a closing timing of the intake valve is more advanced than in a case in which the first intake VVT adjustment process is executed to limit occurrence of delay in a decrease of the acceleration of the vehicle with respect to a decrease in the accelerator pedal operation amount.