US 12,286,118 B2
Hybrid electric vehicle
Takahiro Yoshida, Nagoya (JP); Masahiro Kachi, Nagakute (JP); and Satoshi Masuda, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Dec. 15, 2022, as Appl. No. 18/066,284.
Claims priority of application No. 2022-041614 (JP), filed on Mar. 16, 2022.
Prior Publication US 2023/0294704 A1, Sep. 21, 2023
Int. Cl. B60W 30/192 (2012.01); B60W 10/02 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 20/00 (2016.01)
CPC B60W 30/192 (2013.01) [B60W 10/02 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 20/00 (2013.01); B60W 2510/0208 (2013.01); B60W 2510/0638 (2013.01); B60W 2510/0676 (2013.01); B60W 2510/081 (2013.01); B60W 2540/10 (2013.01); B60W 2710/0644 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A hybrid electric vehicle, comprising:
an engine;
a motor provided on a power transmission path from the engine to a drive wheel;
a clutch provided on the power transmission path between the engine and the motor;
an accelerator operation amount detecting sensor configured to detect an accelerator operation amount; and
a processor configured to, in response to a start request of the engine being given in a release state of the clutch,
engage the clutch,
crank the engine by the motor via the clutch, and
start combustion in the engine while cranking the engine by the motor via the clutch, wherein
the processor is configured to
in response to the start request of the engine being given in the release state of the clutch, amount is equal to or larger than a threshold value, and
in response to determining that the accelerator operation amount is equal to or greater than the threshold value,
calculate, based on the accelerator operation amount sensor, (i) an accelerator operation amount and (ii) an accelerator operation amount change rate per time when the start request of the engine is given,
predict the accelerator operation amount when the clutch is engaged,
predict, based on the predicted accelerator operation amount, a required torque to the engine when the clutch is engaged,
calculate, based on the predicted required torque to the engine, a predicted motor rotational speed, and
advance an ignition timing of the engine as the predicted motor rotational speed of the motor increases, wherein the ignition timing of the engine is advanced to increase a torque of the engine at an earlier stage than when the accelerator operation amount is less than the threshold value.