US 12,084,044 B2
Vehicle control system
Hiroshi Nakano, Tokyo (JP); Nobuyasu Kanekawa, Tokyo (JP); and Atsushi Arata, Ibaraki (JP)
Assigned to HITACHI ASTEMO, LTD., Ibaraki (JP)
Appl. No. 17/778,605
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Nov. 6, 2020, PCT No. PCT/JP2020/041454
§ 371(c)(1), (2) Date May 20, 2022,
PCT Pub. No. WO2021/106518, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019 -213776 (JP), filed on Nov. 27, 2019.
Prior Publication US 2023/0001912 A1, Jan. 5, 2023
Int. Cl. B60W 20/50 (2016.01); B60L 3/00 (2019.01); B60W 10/02 (2006.01); B60W 10/08 (2006.01)
CPC B60W 20/50 (2013.01) [B60L 3/0061 (2013.01); B60W 10/02 (2013.01); B60W 10/08 (2013.01); B60W 2510/081 (2013.01); B60W 2520/28 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A vehicle control system comprising:
a first electric motor that causes a vehicle to travel;
a second electric motor that generates power by using an output of a power source and starts the power source;
a power storage device that stores the power generated by the second electric motor and supplies the power to the first electric motor;
a monitoring device that monitors a failure state of the vehicle, the monitoring device comprising a processor and a memory;
a switching device in communication with the processor that switches a driving force for causing the vehicle to travel from the first electric motor to the second electric motor; and
a vehicle speed sensor that detects a vehicle speed, wherein
in a case of a predetermined driving state being reached in which the monitoring device detects a failure of the first electric motor and a driving force is obtained from the second electric motor, the monitoring device controls the switching device to switch the driving force from the first electric motor to the second electric motor in order to cause the vehicle to travel; and
wherein in a case where the vehicle speed obtained from the vehicle speed sensor becomes equal to or less than a predetermined value when the vehicle decelerates due to travel resistance after failure of the first electric motor, the monitoring device determines that the predetermined driving state is reached, and switches to the driving force from the second electric motor to cause the vehicle to travel.