US 11,702,063 B2
Control device for hybrid vehicle
Atsushi Tabata, Okazaki (JP); Koichi Okuda, Toyota (JP); Tooru Matsubara, Toyota (JP); Yasuhiro Hiasa, Miyoshi (JP); and Yasutaka Tsuchida, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jul. 9, 2020, as Appl. No. 16/925,280.
Claims priority of application No. JP2019-172310 (JP), filed on Sep. 20, 2019.
Prior Publication US 2021/0086751 A1, Mar. 25, 2021
Int. Cl. B60W 20/30 (2016.01); G01P 3/08 (2006.01); B60W 20/15 (2016.01)
CPC B60W 20/30 (2013.01) [B60W 20/15 (2016.01); G01P 3/08 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device for a hybrid vehicle including an engine with a supercharger which serves as a travel power source and a rotary machine which is connected to driving wheels in a power-transmittable manner, the rotary machine having a function of a motor and a function of a power generator, the hybrid vehicle is capable of hybrid driving powered by the engine and driven by the rotary machine, the control device comprising:
an electronic control unit including a CPU, a RAM, a ROM, and an input and output interface, and the CPU configured to perform various types of control of the vehicle by performing signal processing in accordance with a program which is stored in the ROM in advance while using a temporary storage function of the RAM, the electronic control unit further comprising a high rotation preventing unit and a rotation speed setting unit;
the high rotation preventing unit configured to:
compare a maximum rotation speed with a rotation speed of the rotary machine when the rotary machine is serving as a motor, and
decrease an output torque of the engine such that the rotation speed of the rotary machine does not reach a predetermined upper-limit rotation speed when the rotation speed of the rotary machine is higher than the maximum rotation speed and within a margin of the predetermined upper-limit rotation speed of the rotary machine; and
the rotation speed setting unit is configured to set the maximum rotation speed to a lower value when a supercharging pressure from the supercharger is above a predetermined threshold than when the supercharging pressure is below the predetermined threshold.