Intelligent interlock for a motorcycle stand

• US 7,631,885 B2
• Filed: 04/16/2007
• Issued: 12/15/2009
• Est. Priority Date: 04/16/2007
• Status: Active Grant

• Current Assignee: Harley-Davidson Motor Company Incorporated (Harley-Davidson Incorporated)
• Original Assignee: Harley-Davidson Motor Company Group LLC (Harley-Davidson Incorporated)
• Inventors: Safarik, David, Hodge, Ben, Molinaro, Frank
• Primary Examiner(s): Morris; Lesley
• Assistant Examiner(s): Stabley; Michael R
• Application Number:
  US11/735,821
• Publication Number:
  US 20080252041A1
• Time in Patent Office: 974 Days
• Field of Search: 280/293
• US Class Current: 280/293
• CPC Class Codes: B62H 1/02 Articulated stands, e.g. in the shape of hinged arms B62H1/10 takes precedence

Abstract

A motorcycle including a frame, an engine mounted to the frame, and a stand movable between an extended position in which the stand supports the motorcycle and a retracted position. The motorcycle includes a sensor operable to generate a stand signal indicative of at least one of the extended and retracted positions of the side stand and a controller electrically coupled to the sensor to receive the stand signal. The controller is programmed for preventing operation of the engine based on the stand signal during a first operating condition of the motorcycle and is further programmed to allow running of the engine during a second operating condition of the motorcycle, regardless of the stand signal.

Claims

1. A motorcycle comprising:

a frame;

an engine mounted to the frame;

a transmission having a neutral state and a non-neutral state;

a stand movable between an extended position in which the stand supports the motorcycle and a retracted position;

a sensor operable to generate a stand signal indicative of at least one of the extended and retracted positions of the stand; and

a controller electrically coupled to the sensor to receive the stand signal, the controller being programmed for preventing operation of the engine based on the stand signal when the motorcycle is stopped and the transmission is in the non-neutral state, the controller being further programmed for allowing continuous running of the engine regardless of the stand signal when the motorcycle is traveling.

2. The motorcycle of claim 1, further comprising:

a gear position sensor electrically coupled to the controller and operable to output a transmission signal to the controller indicative of at least one of the neutral state and the non-neutral state of the transmission.

3. The motorcycle of claim 2, further comprising:

a vehicle speed sensor operable to detect the speed of the motorcycle and communicate the speed of the motorcycle to the controller,

wherein the controller is programmed for continued monitoring of the stand signal and for preventing operation of the engine when one of the gear position sensor and the vehicle speed sensor fails to communicate successfully with the controller, preventing operation of the engine being dependent upon the stand signal and an output of the other of the gear position sensor and the vehicle speed sensor.

4. The motorcycle of claim 1, further comprising an indicator configured to alert a rider of the motorcycle that at least one of preventing and stopping operation of the engine has occurred due to the stand signal.

5. The motorcycle of claim 1, further comprising an indicator configured to alert a rider of the motorcycle when the stand signal is indicative of the extended position of the stand while the motorcycle is traveling.

6. The motorcycle of claim 1, wherein the controller is programmed to determine whether the motorcycle is stopped or traveling by comparing a sensed vehicle speed to a predetermined speed.

7. The motorcycle of claim 6, wherein the predetermined speed is between about zero kilometers per hour and about 20 kilometers per hour.

8. The motorcycle of claim 1, wherein the controller is further programmed to disable all dependency of engine operation based on the stand signal if the stand signal indicates to the controller that the stand has moved out of the retracted position while the motorcycle is traveling.

9. The motorcycle of claim 8, wherein the controller is further programmed to re-enable dependency of engine operation based on the stand signal upon restarting of the engine.

10. An interlock circuit for a motorcycle, the motorcycle including a frame, an engine mounted to the frame, a transmission coupled to the engine, and a stand movable between an extended position for supporting the motorcycle and a retracted position, the interlock circuit comprising:

a sensor operable to generate a stand signal indicative of at least one of the extended and retracted positions of the stand; and

a controller electrically coupled to the sensor to receive the signal, the controller being programmed for preventing operation of the engine based on the stand signal when the motorcycle is stopped and the transmission is in a non-neutral state, the controller being further programmed to allow running of the engine regardless of the stand signal when the motorcycle is traveling.

11. The interlock circuit of claim 10, further comprising a gear position sensor electrically coupled to the controller and operable to output a transmission signal to the controller indicative of at least one of a neutral state and the non-neutral state of the transmission.

12. The interlock circuit of claim 11, further comprising:

a vehicle speed sensor operable to detect the speed of the motorcycle and communicate the speed of the motorcycle to the controller,

wherein the controller is programmed for continued monitoring of the stand signal and for preventing operation of the engine when one of the gear position sensor and the vehicle speed sensor fails to communicate successfully with the controller, preventing operation of the engine being dependent upon the stand signal and an output of the other of the gear position sensor and the vehicle speed sensor.

13. The interlock circuit of claim 10, further comprising an indicator configured to alert a rider of the motorcycle that at least one of preventing and stopping operation of the engine has occurred due to the stand signal.

14. The interlock circuit of claim 10, further comprising an indicator configured to alert a rider of the motorcycle when the stand signal is indicative of the extended position of the stand while the motorcycle is traveling.

15. The interlock circuit of claim 10, wherein the controller is programmed to determine whether the motorcycle is stopped or traveling by comparing a sensed vehicle speed to a predetermined speed.

16. The interlock circuit of claim 15, wherein the predetermined speed is between about zero kilometers per hour and about 20 kilometers per hour.

17. The interlock circuit of claim 10, wherein the controller is further programmed to disable all dependency of engine operation based on the stand signal if the stand signal indicates to the controller that the stand has moved out of the retracted position while the motorcycle is traveling.

18. The motorcycle of claim 17, wherein the controller is further programmed to re-enable dependency of engine operation based on the stand signal upon restarting of the engine.

19. A method of operating a motorcycle having an engine, a transmission, and a stand, which supports the motorcycle in an extended position and is movable to a retracted position, the method comprising:

sensing a position of the stand;

sensing a traveling speed of the motorcycle;

preventing operation of the engine based on the sensed position of the stand when the motorcycle is stopped; and

allowing operation of the engine regardless of the sensed position of the stand when the motorcycle is traveling.

20. The method of claim 19, further comprising:

sensing the traveling speed of the motorcycle with a vehicle speed sensor and sensing whether the transmission is in a neutral state or the non-neutral state with a gear position sensor.

21. The method of claim 20, further comprising:

selectively preventing operation of the engine based on the sensed position of the stand and one of a speed of the motorcycle and a neutral/non-neutral state of the transmission when the other of the speed of the motorcycle and the neutral/non-neutral state of the transmission is unable to be detected.

22. The method of claim 19, further comprising actuating a visual indicator when the stand is sensed to move from the retracted position to the extended position.

23. The method of claim 19, wherein the controller is programmed to determine whether the motorcycle is stopped or traveling by comparing a sensed vehicle speed to a predetermined speed.

24. The method of claim 23, wherein the predetermined speed is between about zero kilometers per hour and about 20 kilometers per hour.

25. The method of claim 19, further comprising discontinuing the dependency of engine operation based on the sensed position of the stand if the stand is sensed to move out of the retracted position while the motorcycle is traveling.

26. The method of claim 25, further comprising re-establishing dependency of engine operation based on the sensed position of the stand upon restarting of the engine.