Methods and system for operating a vehicle

Patent metadata

Field	Value
Publication number	US-10086840-B2
Application number	US-201615224244-A
Country	US
Kind code	B2
Filing date	Jul 29, 2016
Priority date	Jul 29, 2016
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

Systems and methods for reducing perception of transitions from shifting a transmission from neutral to drive are described. In one example, the transmission is shifted from neutral to drive in response to brake pedal motion before the brake pedal is fully released so that timing of pressurizing clutches and engaging a forward gear is advanced to occur while the brake pedal is still applied.

First claim

The invention claimed is:

1. A system, comprising:
an engine;
a transmission coupled to the engine;
steering wheel paddle shifter switches; and
a controller including executable instructions stored in non-transitory memory to shift the transmission into neutral from a forward gear in response to:
vehicle speed being less than a threshold; and
a first driver input to the steering wheel paddle shifter switches; and

wherein the controller further comprises executable instructions to shift the transmission from neutral to a forward gear in response to a second driver input to the steering wheel paddle shifter switches.

2. The system of claim 1 , further comprising additional instructions to limit engine torque while the transmission is shifted from neutral to the forward gear in response to the second driver input.

3. The system of claim 1 , further comprising additional instructions to limit engine torque while the transmission is shifted from neutral to the forward gear via limiting engine throttle opening.

4. The system of claim 1 , where the second driver input is a request to upshift the transmission.

5. The system of claim 1 , where the first driver input is a request to downshift the transmission.

6. The system of claim 1 , further comprising additional instructions to limit engine torque while the transmission is shifted from neutral to the forward gear via limiting spark timing advance.

Assignees

• Ford Global Tech Llc

Inventors

• Cunningham Ralph Wayne
• Dai Zhengyu
• Xu Yang
• Atluri Sathish
• Pursifull Ross Dykstra

Classifications

• B60W2554/00

  Input parameters relating to objects · CPC title

• B60W2555/60

  Traffic rules, e.g. speed limits or right of way · CPC title

• B60W2554/80

  Spatial relation or speed relative to objects · CPC title

• F16H59/60

  Inputs being a function of ambient conditions · CPC title

• B60W2710/0666

  Engine torque · CPC title