Vehicle and hybrid drive system

• US 9,132,725 B2
• Filed: 05/09/2011
• Issued: 09/15/2015
• Est. Priority Date: 05/09/2011
• Status: Active Grant

• Current Assignee: Cummins Incorporated
• Original Assignee: Cummins Incorporated
• Inventors: Barnes, David M.
• Primary Examiner(s): Ho, Ha D
• Application Number:
  US13/103,549
• Publication Number:
  US 20120285292A1
• Time in Patent Office: 1,590 Days
• Field of Search: 746/61, 74665 A-665 G, 746/65.GE, 746/65.T, 746/65.L, 746/65.P, 180/65, 180/145, 475/5, 477/15, 477/20
• US Class Current: 1/1
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10T 74/19126 Plural drivers plural driven

Abstract

One embodiment is a unique vehicle having a hybrid drive system. Other embodiments include unique hybrid drive systems. Still other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for fluid driven actuation systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.

Claims

1. A vehicle, comprising:

a drive train including a transmission and a drive axle; and

a hybrid vehicle drive system, including;

a combustion engine;

a clutch;

an electrical machine coupled to the combustion engine via the clutch;

the electrical machine further being directly coupled to the transmission without an intervening clutch, wherein the transmission is operative to transmit power from the combustion engine and the electrical machine to the drive axle; and

an accessory drive system coupled to the electrical machine and configured to drive at least one accessory,

wherein the hybrid vehicle drive system is configured to supply mechanical power to the accessory drive system from the combustion engine by engaging the clutch; and

wherein the hybrid vehicle drive system is configured to supply mechanical power to the accessory drive system from the electrical machine by disengaging the clutch.

2. The vehicle of claim 1, wherein the accessory drive system includes means for driving a plurality of accessories.

3. The vehicle of claim 1, wherein the accessory drive system is operative to drive a plurality of accessories;

and wherein the accessory drive system includes a first accessory drive train coupled to the electrical machine;

a second accessory drive train coupled to at least one accessory of the plurality of accessories and configured to drive the at least one accessory; and

means for transmitting power from the first accessory drive train to the second accessory drive train.

4. The vehicle of claim 3, wherein the first accessory drive train is a gear drive.

5. The vehicle of claim 3, wherein the first accessory drive train is coupled to at least another accessory of the plurality of accessories and configured to drive the at least another accessory.

6. The vehicle of claim 3, wherein the second accessory drive train is a belt drive.

7. The vehicle of claim 3, wherein the means for transmitting includes a shaft coupling the second accessory drive train to the first accessory drive train and operative to supply power from the first accessory drive train to the second accessory drive train.

8. The vehicle of claim 1, wherein the accessory drive system is coupled to both the clutch and the electrical machine.

9. The vehicle of claim 1, wherein the electrical machine is configured to both convert mechanical power to electrical power and to convert electrical power to mechanical power.

21. The vehicle of claim 1, wherein the clutch is nested within the electrical machine.

10. A hybrid drive system for powering a drive train, comprising:

a transmission;

an electrical machine coupled to the drive train and operative to transmit power to the drive train, wherein the electrical machine is directly coupled to the transmission without an intervening clutch;

a combustion engine arranged to transmit power to the drive train in series with the electrical machine;

a clutch; and

an accessory drive system, coupled to the electrical machine and configured to drive at least one accessory,

wherein the hybrid drive system is configured to operate the clutch to supply mechanical power to the accessory drive system from a selected one or both of the electrical machine and the combustion engine.

11. The hybrid drive system of claim 10, wherein the hybrid drive system is configured to selectively supply mechanical power to the drive train from a selected one or both of the electrical machine and the combustion engine.

12. The hybrid drive system of claim 10, wherein the hybrid drive system is configured to start the combustion engine using the electrical machine.

13. The hybrid drive system of claim 10, wherein the hybrid drive system is configured to selectively engage and disengage the combustion engine from the electrical machine.

14. The hybrid drive system of claim 10, wherein the clutch is configured to selectively engage and disengage the combustion engine from the electrical machine, wherein the hybrid drive system is configured to supply mechanical power to the accessory drive system from the combustion engine by engaging the clutch;

and wherein the hybrid drive system is configured to supply mechanical power to the accessory drive system from the electrical machine by disengaging the clutch.

15. The hybrid drive system of claim 10, wherein the accessory drive system is configured to drive a plurality of accessories.

16. The hybrid drive system of claim 15, wherein the accessory drive system is bifurcated into a first accessory drive train and a second accessory drive train;

wherein the accessory drive system is configured to drive a first subset of the plurality of accessories with the first accessory drive train; and

wherein the accessory drive system is configured to drive a second subset of the plurality of accessories with the second accessory drive train.

17. The hybrid drive system of claim 16, wherein the first subset includes a gear-driven accessory;

wherein the second subset includes a belt-driven accessory;

wherein the first accessory drive train includes a gear drive configured to drive the gear-driven accessory; and

wherein the second accessory drive train includes a belt drive configured to drive the belt-driven accessory.

22. The hybrid drive system of claim 10, wherein the clutch is nested within the electrical machine.

18. A hybrid drive system, comprising:

a transmission;

an electrical machine directly coupled to the transmission without an intervening clutch;

a combustion engine arranged in series with the electrical machine;

an accessory drive system coupled to the electrical machine and configured to drive at least one accessory; and

means for directing mechanical power to the accessory drive system when the combustion engine is running and for directing mechanical power to the accessory drive system when the combustion engine is not running.

19. The hybrid drive system of claim 18, wherein the means for directing includes a clutch disposed between the combustion engine and the electrical machine, wherein the hybrid drive system is configured to supply mechanical power to the accessory drive system from the combustion engine by engaging the clutch;

and wherein the hybrid drive system is configured to supply mechanical power to the accessory drive system from the electrical machine by disengaging the clutch.

20. The hybrid drive system of claim 19, wherein the clutch is configured to selectively engage and disengage the combustion engine from the electrical machine.

23. The hybrid drive system of claim 18, wherein the means for directing is nested within the electrical machine.