CONTROL DEVICE FOR STRADDLE-TYPE VEHICLE AND VEHICLE EQUIPPED WITH THE SAME

• US 20090171546A1
• Filed: 12/22/2008
• Published: 07/02/2009
• Est. Priority Date: 12/26/2007
• Status: Abandoned Application

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Inventors: Maebashi, Kosei, Fujita, Hirokazu, Tozuka, Harutomo, Samoto, Haruhiko
• Application Number:
  US12/341,686
• Publication Number:
  US 20090171546A1
• Time in Patent Office: Days
• US Class Current: 701/93
• CPC Class Codes: B60K 31/04 and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/106 Rate of change
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60Y 2200/12 Motorcycles, Trikes; Quads; Scooters

Abstract

A control device for a straddle-type vehicle includes a first storage means configured to store a target cruise control speed, and a first detection program which senses if the vehicle accelerator is operated in the further closing direction from the totally closed position of the accelerator. The control device also includes a deceleration processing program which decreases the stored target cruise control speed when the first detection program detects the further closing operation during cruise control. The deceleration processing program varies the rate at which the stored target cruise control speed is decreased according to the magnitude of the operating force utilized in the further closing operation.

Claims

1. A control device having a processor for performing a constant-running speed control for a straddle-type vehicle having an accelerator, the control device comprising:

a first storage means configured to store a target cruise control speed;

an input for receiving a detection signal representative of whether the accelerator is operated in a further closing direction from a totally closed position;

instructions for execution by the processor to detect if the vehicle accelerator is operated in a further closing direction from a totally closed position of the vehicle accelerator based upon the detection signal; and

instructions for execution by the processor to decrease the target cruise control speed stored in the first storage means when the further closing operation is detected during a constant-running speed control operation.

2. The control device of claim 1, wherein the target cruise control speed stored in the first storage means is decreased while the further closing operation is detected.

3. The control device of claim 2, wherein the stored target cruise control speed is decreased at a rate previously determined with respect to time while the further closing operation is detected.

4. The control device of claim 3, wherein the pre-determined rate changes according to the magnitude of an operating force utilized in the further closing operation.

5. The control device of claim 4, further comprising instructions that are executable by the processor for determining the magnitude of the operating force utilized in the further closing operation based on a detection signal representative of the magnitude of the operation force, and a stored relationship between detected operating force magnitudes and applicable pre-determined rates, wherein the pre-determined rate changes according to the magnitude of the operating force detected and the stored relationship.

6. The control device of claim 5, wherein the detection signal representative of whether the accelerator is operated in a further closing direction from a totally closed position and the detection signal representative of the magnitude of the operating force utilized in the further closing operation are the same detection signal.

7. The control device of claim 1, wherein the target cruise control speed stored in the first storage means is decreased at a pre-determined deceleration rate while the first detection program detects the further closing operation.

8. The control device of claim 1, wherein the target cruise control speed stored in the first storage means is decreased every time the further closing operation is detected.

9. The control device of claim 8, wherein the target cruise control speed is decreased by a pre-determined amount each time the further closing operation is detected.

10. The control device of claim 8, further including instructions that are executable by the processor to change the degree of decreasing the target cruise control speed according to the magnitude of an operating force applied during the further closing operation.

11. The control device of claim 8, further including instructions that are executable by the processor to change the degree of decreasing the target cruise control speed according to the vehicle speed when the further closing operation is detected.

12. The control device of claim 8, further including instructions that are executable by the processor to change the degree of decreasing the target cruise control speed according to the opening of a throttle valve when the further closing operation is detected.

13. The control device of claim 8, further including instructions that are executable by the processor to change the degree of decreasing the target cruise control speed according to a detection signal representative of a driving torque when the further closing operation is detected.

14. A straddle-type vehicle equipped with the control device of claim 1.

15. The straddle-type vehicle of claim 14, further comprising an operation detection means for generating a detection signal representative of whether the accelerator is operated in the further closing direction from the totally closed position of the accelerator, the operation detection means operatively connected to the input of the control device.

16. A straddle-type vehicle equipped with the control device of claim 5 or 10.

17. The straddle-type vehicle of claim 16, further comprising an operating force detection means for generating a detection signal representative of the magnitude of the operating force utilized when the accelerator is operated in the further closing direction from the totally closed position of the accelerator, the operation force detection means being operatively connected to the control device.

18. The straddle-type vehicle of claim 17, wherein the instructions for determining the magnitude of the operating force are configured to determine the magnitude of the operating force based on the detection signal generated by the operating force detection means.

19. The straddle-type vehicle of claim 18, wherein the operation detection means and the operating force detection means comprise the same detection means and the detection signal representative of whether the accelerator is operated in a further closing direction from a totally closed position and the detection signal representative of the magnitude of the operating force utilized in the further closing operation are the same detection signal.

20. The straddle-type vehicle of claim 14, further comprising an internal combustion engine as a drive source.

21. The straddle-type vehicle of claim 20, further comprising a mechanism for adjusting the output of the internal combustion engine by adjusting an amount a throttle valve is opened, wherein the control device controls the opening of the throttle valve in such a way that the straddle-type vehicle runs constantly at a target cruise control speed stored in the first storage means during the constant-running speed control operation.

22. The control device of claim 1, further comprising a plurality of inputs for sensors configured to detect the respective operational state of a vehicle clutch lever, the vehicle accelerator, a front brake lever, a throttle valve, and a rear brake pedal.

23. A method for performing a constant-running speed control for a straddle-type vehicle having an accelerator, the method comprising:

determining if the vehicle accelerator is operated in a further closing direction from a totally closed position of the vehicle accelerator; and

decreasing a target cruise control speed when the further closing operation is detected during a constant-running speed control operation.

24. One or more device readable mediums for performing a constant-running speed control for a straddle-type vehicle having an accelerator, the one or more device readable mediums storing instructions which, when executed by a processor, cause the processor to perform the device-implemented steps of:

storing a target cruise control speed in a first storage means;

determining, based upon a detection signal, if the vehicle accelerator is operated in a further closing direction from a totally closed position of the vehicle accelerator; and

decreasing the target cruise control speed stored in the first storage means when the further closing operation is detected during a constant-running speed control operation.