Control device for hybrid vehicle

• US 6,740,987 B2
• Filed: 08/19/2002
• Issued: 05/25/2004
• Est. Priority Date: 08/20/2001
• Status: Expired due to Term

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Kumagai, Katsuhiro, Izumiura, Atsushi, Kitajima, Shinichi, Ukai, Asao, Kuroda, Shigetaka
• Primary Examiner(s): Ponomarenko, Nicholas
• Application Number:
  US10/222,893
• Publication Number:
  US 20030034653A1
• Time in Patent Office: 645 Days
• Field of Search: 290/40.C, 290/40.D, 180/65.2, 180/65.8, 318/376, 318/139
• US Class Current: 290/40.00C
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/24 including control of energy storage means
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 2510/0604 Throttle position
• CPC Class Codes: B60W 2510/0623 Fuel flow rate
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: B60W 2510/18 Braking system
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2710/18 Braking system
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/919 Stepped shift
• CPC Class Codes: Y10S 903/947 Characterized by control of braking, e.g. blending of regeneration, friction braking

Abstract

A control device for a hybrid vehicle provided with an engine and a motor as driving sources, and a storage battery device which stores regenerative energy obtained by output from the engine or by regenerative operation of the motor during deceleration of the vehicle. The control device includes: a vehicle speed detection unit which detects speed of the vehicle; a deceleration fuel cut determination unit which determines whether supply of fuel to the engine is stopped during deceleration of the vehicle; and a brake detection unit which detects operation of a brake, wherein regenerative braking is stopped when operation of the brake is detected by the brake detection unit if the vehicle speed detected by the vehicle speed detection unit is lower than a predetermined speed and if it is determined by the deceleration fuel cut determination unit that the supply of fuel to the engine is not stopped.

Claims

1. A control device for a hybrid vehicle provided with an engine and a motor as driving sources, and a storage battery device which stores regenerative energy obtained by output from the engine or by regenerative operation of the motor during deceleration of the vehicle, the control device comprising:

a vehicle speed detection unit which detects speed of the vehicle;

a deceleration fuel cut determination unit which determines whether supply of fuel to the engine is stopped during deceleration of the vehicle; and

a brake detection unit which detects operation of a brake, wherein

regenerative braking is stopped when operation of the brake is detected by the brake detection unit if the vehicle speed detected by the vehicle speed detection unit is lower than a predetermined speed and if it is determined by the deceleration fuel cut determination unit that the supply of fuel to the engine is not stopped.

2. A control device for a hybrid vehicle according to claim 1, wherein the vehicle is further provided with a manual transmission.

3. A control device for a hybrid vehicle provided with an engine and a motor as driving sources, and a storage battery device which stores regenerative energy obtained by output from the engine or by regenerative operation of the motor during deceleration of the vehicle, the control device comprising:

a vehicle speed detection unit which detects speed of the vehicle;

a deceleration fuel cut determination unit which determines whether supply of fuel to the engine is stopped during deceleration of the vehicle;

a brake detection unit which detects operation of a brake, and

a throttle opening degree detection unit which detects an opening degree of a throttle, wherein

regenerative braking is carried out with a degree corresponding to a revolution number of the engine, if the opening degree of the throttle detected by the throttle opening degree detection unit is smaller than a predetermined value, when the vehicle speed detected by the vehicle speed detection unit is lower than a predetermined speed, it is determined by the deceleration fuel cut determination unit that the supply of fuel to the engine is not stopped, and the operation of the brake is not detected by the brake detection unit.

4. A control device for a hybrid vehicle according to claim 3, wherein the vehicle is further provided with a manual transmission.