SYSTEM AND METHOD FOR POWERING A MECHANICALLY DRIVEN ACCESSORY COMPONENT IN AN AUTOMOTIVE VEHICLE

• US 20090013952A1
• Filed: 07/12/2007
• Published: 01/15/2009
• Est. Priority Date: 07/12/2007
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Gartner, Paul M., Deniston, Paul Michael
• Granted Patent: US 7,726,275 B2
• Time in Patent Office: Days
• US Class Current: 123/179.280
• CPC Class Codes: B60K 2006/268 Electric drive motor starts the engine, i.e. used as starter motor
• CPC Class Codes: B60K 2025/005 driven by electric motors forming part of the propulsion unit
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: F02B 2275/06 Endless member is a belt
• CPC Class Codes: F02B 67/06 driven by means of chains, belts, or like endless members
• CPC Class Codes: F02N 11/003 said electric motor being also used as a drive for auxiliaries, e.g. for driving transmission pumps or fuel pumps during engine stop
• CPC Class Codes: F02N 11/04 the motors being associated with current generators
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A belt integrated starter generator may selectively drive accessory components while an engine is off. The belt integrated starter generator may also selectively drive a crankshaft of the engine. Clutches are used to access rotational power from the belt.

Claims

1. A system for powering an accessory component of a vehicle comprising:

an engine including a crankshaft;

an electric motor; and

a mechanically driven accessory component wherein the electric motor and crankshaft are configured to be selectively mechanically coupled and wherein the electric motor and accessory component are configured to be selectively mechanically coupled, thereby powering the accessory component.

2. The system of claim 1 further comprising a belt and a clutch wherein the electric motor and crankshaft are configured to be selectively mechanically coupled via the belt and the clutch.

3. The system of claim 2 wherein the belt is a serpentine belt.

4. The system of claim 1 further comprising a belt and a clutch wherein the electric motor and accessory component are configured to be selectively mechanically coupled via the belt and the clutch.

5. The system of claim 1 wherein the crankshaft and accessory component are configured to be selectively mechanically coupled.

6. The system of claim 5 further comprising a belt and a clutch wherein the crankshaft and accessory component are configured to be selectively mechanically coupled via the belt and the clutch.

7. The system of claim 1 wherein the electric motor is a belt integrated starter generator.

8. The system of claim 1 wherein the mechanically driven accessory component comprises an air conditioning compressor.

9. The system of claim 1 wherein the mechanically driven accessory component comprises a power steering pump.

10. The system of claim 1 wherein the mechanically driven accessory component comprises a water pump.

11. A system for powering an accessory component of a vehicle including an engine having a crankshaft and an electric motor, the system comprising:

a belt;

first and second clutches; and

a mechanically driven accessory component wherein the electric motor and crankshaft are configured to be selectively mechanically coupled via the belt and the first clutch and wherein the electric motor and accessory component are configured to be selectively mechanically coupled via the belt and the second clutch, thereby powering the accessory component.

12. The system of claim 11 wherein the crankshaft and accessory component are configured to be selectively mechanically coupled.

13. The system of claim 11 wherein the electric motor is a belt integrated starter generator.

14. The system of claim 11 wherein the mechanically driven accessory component comprises an air conditioning compressor.

15. The system of claim 11 wherein the mechanically driven accessory component comprises a power steering pump.

16. The system of claim 11 wherein the mechanically driven accessory component comprises a water pump.

17. A method for powering a mechanically driven accessory component in a vehicle including an engine having a crankshaft, an electric motor, and a mechanically driven accessory component wherein the electric motor and crankshaft are configured to be selectively mechanically coupled and wherein the electric motor and accessory component are configured to be selectively mechanically coupled, the method comprising:

mechanically de-coupling the electric motor and crankshaft;

mechanically coupling the electric motor and accessory component; and

providing mechanical power from the electric motor to the accessory component.

18. The method of claim 17 wherein the vehicle further includes a clutch and wherein the electric motor and crankshaft are mechanically de-coupled via the clutch.

19. The method of claim 17 wherein the vehicle further includes a clutch and wherein the electric motor and accessory component are mechanically coupled via the clutch.