Hybrid vehicle

Patent metadata

Field	Value
Publication number	US-11339734-B2
Application number	US-201916671964-A
Country	US
Kind code	B2
Filing date	Nov 1, 2019
Priority date	Nov 5, 2018
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A hybrid vehicle includes an engine, a first motor, a planetary, the first motor, and a drive shaft, such that the first motor, the engine, and the drive shaft are arranged in this order in a collinear diagram, a second motor configured to be connected to the drive shaft, a power storage device configured to exchange an electric power with the first motor and the second motor. A braking force is applied to a vehicle by motoring the engine, in which fuel injection is stopped, by the first motor and/or regenerative driving of the second motor, when an accelerator is not operated. Motoring of the engine, in which fuel injection is stopped, by the first motor is limited, in a case where a deposition amount of particulate matter deposited on the filter is equal to or higher than a predetermined amount, when an accelerator is not operated.

First claim

What is claimed is:

1. A hybrid vehicle comprising:
an engine in which a filter for removing particulate matter is attached to an exhaust system;
a first motor,
a planetary gear in which three rotational elements are connected to the engine, the first motor, and a drive shaft coupled to an axle, such that the first motor, the engine, and the drive shaft are arranged in this order in a collinear diagram;
a second motor configured to be connected to the drive shaft;
a power storage device configured to exchange an electric power with the first motor and the second motor; and
a control device configured to apply a braking force to a vehicle by motoring the engine, in which fuel injection is stopped, by the first motor and/or regenerative driving of the second motor, when an accelerator is not operated,
wherein the control device limits motoring of the engine, in which fuel injection is stopped, by the first motor, in a case where a deposition amount of particulate matter deposited on the filter is equal to or higher than a predetermined amount, when an accelerator is not operated.

2. The hybrid vehicle according to claim 1 , wherein the control device is configured to autonomously operate the engine, in a case where the deposition amount is equal to or higher than the predetermined amount, when an accelerator is not operated.

3. The hybrid vehicle according to claim 1 , wherein the control device is configured to prohibit selection of a brake position at which a request braking force when an accelerator is not operated is larger than a drive position, as a shift position, in a case where the deposition amount is equal to or higher than the predetermined amount.

4. The hybrid vehicle according to claim 1 , wherein the control device is configured to prohibit selection of a sequential position at which a request braking force when an accelerator is not operated is changed in a plurality of stages, as a shift position, in a case where the deposition amount is equal to or higher than the predetermined amount.

5. The hybrid vehicle according to claim 1 , wherein the control device is configured to control the engine so that an air-fuel ratio becomes lean, in a case where the deposition amount is equal to or higher than the predetermined amount, when the engine is operated.

6. The hybrid vehicle according to claim 1 , wherein the control device is configured to limit motoring of the engine by the first motor as compared with a case where the deposition amount is lower than the predetermined amount, in a case where the deposition amount is equal to or higher than the predetermined amount, when an accelerator is not operated in a maintenance mode.

Assignees

• Toyota Motor Co Ltd

Inventors

• Muta Koichiro

Classifications

• B60W30/1843

  Overheating of driveline components (B60W30/186 takes precedence) · CPC title

• F02D2200/602

  Pedal position · CPC title

• B01D46/80

  Chemical processes for the removal of the retained particles, e.g. by burning · CPC title

• F02D2200/0812

  Particle filter loading · CPC title

• B60W30/18136

  Engine braking · CPC title