Methods and systems for launching a vehicle with a manual shift transmission

Patent metadata

Field	Value
Publication number	US-12092047-B2
Application number	US-202217931799-A
Country	US
Kind code	B2
Filing date	Sep 13, 2022
Priority date	Sep 13, 2022
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

Methods and systems for operating a vehicle that includes a manual transmission are presented. In one example, a method for a vehicle having a manual transmission comprises, during an initial launch with traction control enabled, overriding driver throttle commands to maintain a setpoint speed of an engine and limiting wheel slip until wheel slip decreases below a non-zero threshold.

First claim

The invention claimed is:

1. A method for operating a vehicle having a manual transmission and a clutch pedal, comprising:
during an initial launch with traction control enabled, overriding driver throttle commands to maintain a setpoint speed of an engine and limiting wheel slip until wheel slip decreases below a non-zero threshold; and
controlling a timing of throttle opening based on a clutch pedal rate of engagement.

2. The method of claim 1 , wherein the initial launch is determined from vehicle speed being below a nominal non-zero threshold greater than a threshold amount, wherein the overriding is enabled responsive to the initial launch being determined.

3. The method of claim 1 , wherein the overriding is activated responsive to a clutch pedal position and the clutch pedal rate of engagement over time.

4. The method of claim 1 , wherein a driver inputs the setpoint speed via a machine/human interface.

5. The method of claim 1 , wherein the limiting wheel slip includes reducing power being sent to wheels of the vehicle responsive to an indication of wheel slip above the non-zero threshold.

6. The method of claim 1 , wherein the overriding is activated responsive to an indication of a clutch pedal position exceeding a threshold and a wide open pedal.

7. The method of claim 1 , wherein the overriding is activated responsive to an indication of engine speed within a threshold of the setpoint speed.

8. The method of claim 1 , wherein the limiting wheel slip continues until a first to second gear transition and discontinues at the gear transition even if wheel slip remains above the non-zero threshold.

9. The method of claim 1 , wherein the overriding is enabled responsive to an indication of one or more engine-ready conditions and one or more base conditions.

10. A method for operating a vehicle having a manual transmission and a clutch pedal, comprising:
during an initial launch with traction control disabled, overriding driver throttle commands to maintain a setpoint speed of an engine until wheel speed exceeds a non-zero threshold, and controlling a timing of throttle opening based on a clutch pedal rate.

11. The method of claim 10 , wherein the initial launch is determined from vehicle speed being below a nominal non-zero threshold greater than a threshold amount, wherein the overriding is enabled responsive to the initial launch being determined.

12. The method of claim 10 , wherein a driver inputs the setpoint speed via a machine/human interface.

13. The method of claim 10 , wherein the overriding is enabled responsive to an indication of one or more engine-ready conditions and one or more base conditions.

14. The method of claim 10 , wherein the overriding is activated responsive to an indication of a clutch pedal position exceeding a threshold and a wide open pedal.

15. A vehicle system, comprising:
an engine;
a manual transmission coupled to the engine;
a plurality of wheels coupled to the manual transmission;
a clutch pedal; and
a controller including executable instructions stored in non-transitory memory to,
during an initial launch with traction control enabled, override driver throttle commands to maintain a first setpoint speed of the engine and limit wheel slip until wheel slip decreases below a first non-zero threshold;
during the initial launch with traction control disabled, override driver throttle commands to maintain a second setpoint speed of the engine until wheel speed exceeds a second non-zero threshold; and
control a timing of throttle opening based on a clutch pedal rate.

16. The vehicle system of claim 15 , wherein a faster rate of clutch pedal engagement produces an earlier throttle opening and a slower rate of clutch pedal engagement produces a later throttle opening.

17. The vehicle system of claim 15 , further comprising a first throttle and second throttle.

18. The vehicle system of claim 15 , further comprising a machine/human interface.

19. The vehicle system of claim 18 , further comprising instructions to enable the override responsive to an indication of meeting one or more engine-ready conditions, one or more speed preconditions, and one or more drive mode conditions.

Assignees

• Ford Global Tech Llc

Inventors

• Datta Brij
• Drogosch Brad
• Ciarrocchi Rob
• Knopf Colton
• Titus Matthew Arthur
• Busack Adam

Classifications

• F02D41/10 Primary

  for acceleration · CPC title

• B60W2540/14

  Clutch pedal position · CPC title

• B60W2520/26

  Wheel slip · CPC title

• B60W30/184

  Preventing damage resulting from overload or excessive wear of the driveline · CPC title

• B60W10/06

  including control of combustion engines · CPC title