Control apparatus for driving vehicle and control method for driving vehicle

• US 20060037573A1
• Filed: 02/08/2005
• Published: 02/23/2006
• Est. Priority Date: 02/09/2004
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: Iwatsuki, Ken, Hara, Takeshi, Okoshi, Toshio
• Granted Patent: US 7,216,618 B2
• Time in Patent Office: Days
• US Class Current: 123/179.400
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 2240/441 Speed
• 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 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: F16H 2037/0866 Power split variators with distributing differentials, with the output of the CVT connected or connectable to the output shaft
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A control apparatus for driving a vehicle and a control method for driving a vehicle. A control apparatus for driving a vehicle has an engine start permission output control processing module which reads engine rotational speed; determines whether the engine rotational speed takes a value within a predetermined start disable range; does not output an engine start permission when the engine rotational speed takes a value within the start disable range; and outputs an engine start permission when the engine rotational speed takes a value except a value within the start disable range, and has an engine start control processing module which starts an engine when the engine start permission is outputted. An engine start permission is not outputted and the engine is not started when the engine rotational speed takes the value except the value within the start disable range.

Claims

1. A control apparatus for driving a vehicle comprising:

an engine start permission output control processing module operable to;

read engine rotational speed;

determine whether the engine rotational speed takes a value within a predetermined start disable range;

output an engine start permission when the engine rotational speed takes a value not within the start disable range, and

an engine start control processing module which starts an engine when the engine start permission is output.

2. The control apparatus for driving the vehicle according to claim 1, comprising:

an engine drive determination processing module operable to output an engine start request and an engine stop request based on whether the engine is placed in a drive range,

wherein the engine start permission output control processing module determines whether the engine rotational speed takes the value within the start disable range while the engine target rotational speed is being reduced as the engine stop request is output.

3. The control apparatus for driving the vehicle according to claim 2, wherein when the engine stop request is outputted to correspondingly start reducing the engine rotational speed, the engine rotational speed takes the value within the start disable range and then the engine start request is outputted, the engine start permission output control processing module delays output of the engine start permission until the engine rotational speed takes the value except the value within the start disable range.

4. The control apparatus for driving the vehicle according to claim 3, wherein when the engine stop request is outputted to correspondingly start reducing the engine rotational speed, the engine rotational speed takes the value not within the start disable range before or after the engine rotational speed takes the value within the start disable range and then the engine start request is outputted, the engine start permission output control processing module immediately outputs the engine start permission.

5. The control apparatus for driving the vehicle according to claim 1, wherein the start disable range is set in a resonance range that is formed based on the number of unique vibrations of a vehicle drive apparatus.

6. The control apparatus for driving the vehicle according to claim 1, wherein the start disable range is set by adding a margin to a resonance range that is formed based on the number of unique vibrations of a vehicle drive apparatus.

7. The control apparatus for driving the vehicle according to claim 1, wherein the start disable range is set in a resonance range that is formed based on the number of unique vibrations of a vehicle drive apparatus, and in a range lower than a low limit value of the engine rotational speed that forms the resonance range.

8. A control method for driving a vehicle comprising:

reading engine rotational speed;

determining whether the engine rotational speed takes a value within a predetermined start disable range;

outputting an the engine start permission when the engine rotational speed takes a value not within the start disable range; and

starting an engine when the engine start permission is output.