HYBRID VEHICLE

• US 20140288743A1
• Filed: 03/21/2014
• Published: 09/25/2014
• Est. Priority Date: 03/25/2013
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: HOKOI, Koji, HIRAI, Makoto
• Granted Patent: US 9,132,833 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/12 using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• CPC Class Codes: B60W 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2530/12 Catalyst or filter state
• CPC Class Codes: B60W 2710/248 Current for loading or unloading
• CPC Class Codes: B60Y 2300/474 Catalyst warm up
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y10S 903/93 Conjoint control of different elements

Abstract

A hybrid vehicle includes an engine including a purification device, a motor, a battery, a navigation system, and a controller. The controller is configured to set a predetermined section, which is an initial section of a hybrid traveling priority section in a travel plan, for a warm-up section for warming up the purification device. The controller is configured to reset the travel plan by changing any one of an electric traveling priority sections before the predetermined section to the hybrid traveling priority section when a traveling load of the predetermined section is higher than a predetermined load corresponding to an output limit of the battery. The controller is configured to reset the section changed to the hybrid traveling priority section for the warm-up section for warming up the purification device.

Claims

1. A hybrid vehicle comprising:

an engine configured to output driving power, the engine including a purification device having a purification catalyst that purifies exhaust gas, the purification device being installed in an exhaust system;

a motor configured to output driving power;

a battery configured to exchange electric power with the motor;

a navigation system configured to set a travel route to a destination and carry out route guidance; and

a controller configured to set a travel plan in which each of travel sections in the travel route to the destination, set by the navigation system, is determined as one of a hybrid traveling priority section and an electric traveling priority section on the basis of a traveling load, the hybrid traveling priority section being a section in which hybrid traveling in which the hybrid vehicle travels while the engine is operated is carried out in preference to electric traveling in which the hybrid vehicle travels while operation of the engine is stopped, the electric traveling priority section being a section in which the electric traveling is carried out in preference to the hybrid traveling, the controller being configured to set a predetermined section, which is an initial section of the hybrid traveling priority section in the travel plan, for a warm-up section for warming up the purification device, the controller being configured to reset the travel plan by changing any one of the electric traveling priority sections before the predetermined section to the hybrid traveling priority section when the traveling load of the predetermined section is higher than a predetermined load corresponding, to an output limit of the battery, the controller being configured to reset the section changed to the hybrid traveling priority section for the warm-up section for warming up the purification device, the controller being configured to keep the travel plan and the warm-up section of the purification device when the traveling load of the predetermined section is lower than or equal to the predetermined load, the controller being configured to control the engine and the motor such that the purification device is warmed up when the hybrid vehicle travels on the driving power and travels in the warm-up section for warming up the purification device in accordance with the set travel plan.

2. The hybrid vehicle according to claim 1, wherein

the controller is configured to limit the driving power to at or below the output limit of the battery when the hybrid vehicle travels in the warm-up section for warming up the purification device.

3. The hybrid vehicle according to claim 2, wherein

the controller is configured not to limit the driving power to at or below the output limit of the battery when an accelerator operation amount is larger than a predetermined operation amount while the hybrid vehicle travels in the warm-up section for warming up the purification device.

4. The hybrid vehicle according to claim 1, wherein

the controller is configured to determine the travel sections until a total energy of the electric traveling priority sections reaches a stored electric energy of the battery as the electric traveling priority sections in ascending order of a traveling load for the travel sections having the traveling load lower than or equal to the predetermined load among the travel sections in the travel route, the controller is configured to determine a remaining travel sections among the travel sections having the traveling load lower than or equal to the predetermined load as the hybrid traveling priority sections, and the controller is configured to determine the travel sections having the traveling load higher than the predetermined load as the hybrid traveling priority sections.

5. The hybrid vehicle according to claim 1, further comprising:

a generator; and

a planetary gear unit connected to a drive shaft coupled to an axle, an output shaft of the engine and a rotary shaft of the generator, wherein

the motor is connected to the drive shaft.