TRANSMISSION GEAR SHIFT INDICATION ADJUSTMENT

• US 20140229076A1
• Filed: 02/14/2013
• Published: 08/14/2014
• Est. Priority Date: 02/14/2013
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Doering, Jeffrey Allen, Hrovat, Davor
• Granted Patent: US 9,347,557 B2
• Time in Patent Office: Days
• US Class Current: 701/48
• CPC Class Codes: F16H 2061/0492 for high engine torque, e.g. during acceleration or uphill driving
• CPC Class Codes: F16H 2061/248 with audible signals for providing selection or shift feed back
• CPC Class Codes: F16H 63/42 Ratio indicator devices

Abstract

Methods and systems are provided for operating a vehicle with a transmission. In one example approach, a method for a vehicle comprises, during a transmission shift having a first engine speed profile, adjusting a transmission shift indication provided to a vehicle operator based on a desired perceived shift time and a desired engine deceleration rate.

Claims

1. A method for a vehicle comprising:

during a transmission shift having a first engine speed profile, displaying a second engine speed profile to a vehicle operator, the second profile indicating a smaller inertia phase than the first engine speed profile.

2. The method of claim 1, wherein the transmission shift is an upshift from a first gear ratio to a second smaller gear ratio.

3. The method of claim 1, wherein the second engine speed profile is displayed to the vehicle operator via a tachometer.

4. The method of claim 1, wherein the second engine speed profile is based on a desired perceived shift time and a desired engine deceleration rate and the first profile is an actual engine speed profile.

5. The method of claim 4, wherein the desired perceived shift time is based on a shift lever position, vehicle speed, accelerator pedal position, initial or final gear number/ratio.

6. The method of claim 4, wherein the desired perceived shift time is based on a driver selected or automatically selected transmission operating mode.

7. The method of claim 4, wherein the transmission shift is from a first gear to a second gear and the desired engine deceleration rate is based on synchronous speeds for the first and second gears and the desired perceived shift time.

8. The method of claim 4, wherein the second engine speed profile is adjusted based on the desired engine deceleration rate.

9. The method of claim 1, wherein the transmission shift has a first engine sound profile at the driver'"'"'s ear based on actual engine behavior and the method further comprises producing a sound wave to replace the first engine sound profile with a second desired sound profile, the second sound profile based on the second engine speed profile.

10. The method of claim 9, further comprising canceling the first sound profile and substituting the second sound profile.

11. A method for a vehicle, comprising:

during a transmission shift having a first actual engine speed profile, displaying a second engine speed profile to a vehicle operator, wherein the second engine speed profile shows a faster rate of change of engine speed than the first profile.

12. The method of claim 11, wherein the transmission shift is an upshift from a first gear ratio to a second smaller gear ratio.

13. The method of claim 11, wherein the second engine speed profile is further based on a desired perceived shift time and a desired engine deceleration rate.

14. The method of claim 13, wherein the desired perceived shift time is based on a driver selected transmission operating mode.

15. The method of claim 13, wherein the transmission shift is from a first gear to a second gear and the desired engine deceleration rate is based on synchronous speeds for the first and second gears and the desired perceived shift time.

16. The method of claim 11, further comprising displaying an actual engine speed profile before and after the transmission shift and smoothly transitioning from the second engine speed profile to the actual engine speed profile after the transmission shift.

17. The method of claim 16, further comprising applying a first filter to the actual engine speed profile before and after the transmission shift and applying a second filter to the second engine speed profile, where an amount of filtering of the second filter is less than an amount of filtering of the first filter.

18. A method for a vehicle, comprising:

during a transmission shift having a first engine speed profile, adjusting a transmission shift indication provided to a vehicle operator based on a desired perceived shift time and a desired engine deceleration rate.

19. The method of claim 18, wherein adjusting a transmission shift indication provided to a vehicle operator includes adjusting an engine speed profile displayed to the vehicle operator.

20. The method of claim 18, wherein adjusting a transmission shift indication provided to a vehicle operator includes adjusting a transmission shift noise profile provided to the vehicle operator.