Hybrid vehicle

Patent metadata

Field	Value
Publication number	US-2019023261-A1
Application number	US-201816032546-A
Country	US
Kind code	A1
Filing date	Jul 11, 2018
Priority date	Jul 18, 2017
Publication date	Jan 24, 2019
Grant date	—

Abstract

There is provided a hybrid vehicle comprising a mode selection device configured to select one drive mode among a plurality of drive modes according to a user's operation. The plurality of drive modes include a first drive mode in which the hybrid vehicle is driven with power from a motor with stopping rotation of an engine and a second drive mode in which the hybrid vehicle is driven with rotation of the engine. On satisfaction of filter regeneration conditions that an accumulated amount of particulate matter accumulated on a filter is equal to or greater than a predetermined accumulated amount and that a temperature of the filter is equal to or higher than a predetermined temperature, the hybrid vehicle is driven in the second drive mode even when the first drive mode is selected by the mode selection device.

First claim

1 . A hybrid vehicle, comprising:
an engine for driving equipped with a filter for removal of particulate matter in an exhaust system; a motor for driving; a mode selection device configured to select one drive mode among a plurality of drive modes according to a user's operation, wherein the plurality of drive modes include a first drive mode in which the hybrid vehicle is driven with power from the motor with stopping rotation of the engine and a second drive mode in which the hybrid vehicle is driven with rotation of the engine; and a control device configured to control the engine and the motor, wherein on satisfaction of filter regeneration conditions that an accumulated amount of the particulate matter accumulated on the filter is equal to or greater than a predetermined accumulated amount and that a temperature of the filter is equal to or higher than a predetermined temperature, the control device causes the hybrid vehicle to be driven in the second drive mode even when the first drive mode is selected by the mode selection device.

2 . The hybrid vehicle according to claim 1 ,
wherein on satisfaction of the filter regeneration conditions, even when the first drive mode is selected by the mode selection device, the control device controls the engine and the motor to cause the hybrid vehicle to be driven in the second drive mode upon non-satisfaction of a predetermined condition that is based on at least one of an accumulated amount of the particulate matter, an accumulation speed at which the particulate matter is accumulated on the filter, and a frequency of cleaning of the filter, while controlling the engine and the motor to cause the hybrid vehicle to be driven in the first drive mode upon satisfaction of the predetermined condition.

3 . The hybrid vehicle according to claim 1 ,
wherein the second drive mode includes a first mode in which the hybrid vehicle is driven with stopping operation of the engine and causing the engine to be motored by the motor, and a second mode in which the hybrid vehicle is driven with prohibiting a drive in the first drive mode and continuing operation of the engine.

4 . The hybrid vehicle according to claim 1 , further comprising:
a first motor; a planetary gear configured such that three rotational elements thereof are respectively connected with a driveshaft coupled with drive wheels, an output shaft of the engine, and a rotating shaft of the first motor; and a second motor connected with the driveshaft and configured as the motor for driving, wherein the second drive mode includes a first mode in which the hybrid vehicle is driven with stopping operation of the engine and causing the engine to be motored at a predetermined rotation speed by the first motor, and a second mode in which the hybrid vehicle is driven with prohibiting a drive in the first drive mode and continuing operation of the engine.

5 . The hybrid vehicle according to claim 3 ,
wherein on satisfaction of the filter regeneration conditions, when the first drive mode is selected by the mode selection device and the hybrid vehicle is driven in the first mode of the second drive mode, the control device controls at least the engine and the motor to cause the engine to be motored at a lower rotation speed, compared with a rotation speed at which the engine is motored with stopping fuel supply to the engine when the first drive mode is not selected by the mode selection device.

6 . The hybrid vehicle according to claim 3 ,
wherein on satisfaction of the filter regeneration conditions, when the first drive mode is selected by the mode selection device and the hybrid vehicle is driven in the first mode of the second drive mode, the control device controls at least the engine and the motor to cause the engine to be motored at a higher rotation speed when a vehicle speed is equal to or higher than a predetermined vehicle speed, compared with a rotation speed at which the engine is motored when the vehicle speed is lower than the predetermined vehicle speed.

7 . The hybrid vehicle according to claim 3 , further comprising:
a notification device that provides information, wherein on satisfaction of the filter regeneration conditions, when the first drive mode is selected by the mode selection device and the hybrid vehicle is driven in the second mode of the second drive mode, the control device controls the notification device to provide information indicating that the hybrid vehicle is driven in the second mode of the second drive mode.

8 . The hybrid vehicle according to claim 3 ,
wherein on satisfaction of the filter regeneration conditions, when the first drive mode is not selected by the mode selection device, the control device controls at least the engine and the motor to cause the hybrid vehicle to be driven in the first mode of the second drive mode.

Assignees

• Toyota Motor Co Ltd

Inventors

• Kanayama Takeshi
• Yanagida Eiji
• Ichikawa Koichi

Classifications

• F01N9/002

  of filter regeneration · CPC title

• B60W2530/12

  Catalyst or filter state · CPC title

• F01N2900/1404

  Exhaust gas temperature · CPC title

• F02D41/029

  the exhaust gas treating apparatus being a particulate filter · CPC title

• B60W20/16

  for reducing engine exhaust emissions · CPC title