US 11,754,004 B2
Control method and control device for internal combustion engine
Hirofumi Miyauchi, Kanagawa (JP); and Michio Watanabe, Kanagawa (JP)
Assigned to NISSAN MOTOR CO., LTD., Yokohama (JP)
Appl. No. 17/625,141
Filed by NISSAN MOTOR CO., LTD., Yokohama (JP)
PCT Filed Jul. 26, 2019, PCT No. PCT/JP2019/029525
§ 371(c)(1), (2) Date Jan. 6, 2022,
PCT Pub. No. WO2021/019626, PCT Pub. Date Feb. 4, 2021.
Prior Publication US 2022/0268220 A1, Aug. 25, 2022
Int. Cl. F02D 13/02 (2006.01); F02D 23/00 (2006.01); F02D 41/00 (2006.01)
CPC F02D 13/0261 (2013.01) [F02D 13/0215 (2013.01); F02D 23/00 (2013.01); F02D 2041/001 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A control method for an internal combustion engine, the internal combustion engine including a valve timing control mechanism on at least an intake side and configured to control an operation of the valve timing control mechanism on the intake side during acceleration, the method comprising:
calculating a relational expression between an intake valve timing, the intake valve timing being an operation timing of an intake valve, and a cylinder air charge amount, based on a plurality of intake valve timing values and a plurality of cylinder air charge amount values corresponding to the intake valve timing values, all of the intake valve timing values being in a range in which the intake valve timing can be advanced or retarded within a predetermined calculation cycle from a current value;
calculating a target air charge amount, the target air charge amount being a target value of the cylinder air charge amount during the acceleration, based on an operating state of the internal combustion engine;
calculating a target value of the intake valve timing corresponding to the target air charge amount from the relational expression for each calculation cycle; and
setting a command signal for the valve timing control mechanism on the intake side based on a calculated target value of the intake valve timing.