Method and apparatus of propelling a vehicle

Patent metadata

Field	Value
Publication number	US-9783181-B2
Application number	US-201314084009-A
Country	US
Kind code	B2
Filing date	Nov 19, 2013
Priority date	Nov 20, 2012
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A vehicle includes a clutch that couples an engine to a transmission via a flywheel, a clutch actuator, and a controller configured to receive an obstructed launch command, elevate an engine operation, for a fixed period of time, beyond a typical launch operation upon receipt of the obstructed launch command, and engage the clutch against the flywheel for at least a portion of the fixed period of time.

First claim

What is claimed is:

1. A vehicle, comprising:
a clutch that couples an engine to a transmission via a flywheel;
a clutch actuator; and
a controller configured to:
determine a first engine speed that corresponds with an unobstructed launch speed of a vehicle;
receive an obstructed launch command from an operator of the vehicle, after the operator has determined that a road obstacle will not be overcome using the first engine speed;
determine a second engine speed that corresponds with an obstructed launch speed of the vehicle;
elevate an engine operation, for a fixed period of time that is pre-set to a fixed duration of time, to the second engine speed; and
engage the clutch against the flywheel for the fixed period of time, unless a kill command is received from the operator, wherein if the kill command is received by the operator, then the engine operation is returned to the first engine speed.

2. The vehicle of claim 1 , wherein the transmission is an automated manual transmission (AMT) that executes gear shifts and uses a clutch actuator, and without a clutch pedal.

3. The vehicle of claim 1 , wherein the vehicle further comprises a command entry device for entering the obstructed launch command, wherein the command entry device is one of a control area having manually depressible buttons, a switch, a touch screen, and a smartphone app.

4. The vehicle of claim 1 , wherein the first speed is approximately 1000 RPM, and wherein the controller is configured to elevate the engine speed to the second engine speed of more than 1000 RPM beyond the first speed upon receipt of the obstructed launch command.

5. The vehicle of claim 1 , wherein the fixed, preset period of time is an amount that is fixed at approximately 15 seconds.

6. The vehicle of claim 1 , wherein, if the kill command is initiated by the operator, the controller is configured to discontinue the elevated engine speed and set the engine speed at the unobstructed launch speed during the pre-set period of time.

7. A method of controlling a vehicle, comprising:
determining a first engine speed that corresponds with a typical reference launch speed of a vehicle when the vehicle is not obstructed from motion;
receiving an obstructed launch command in a transmission controller from an operator of the vehicle, after the operator has determined that a road obstacle will not be overcome using the typical reference launch speed;
elevating an engine speed of the vehicle to a second engine speed that is beyond the first engine speed, for a period of time that is pre-set to a fixed duration of time, upon receipt of the obstructed launch command; and
engaging a clutch against a flywheel for the fixed period of time, wherein if a kill command is received by the operator, then the engine operation is returned to the first engine speed.

8. The method of claim 7 , wherein the transmission is an automated manual transmission (AMT) that executes gear shifts and uses a clutch actuator, and without a clutch pedal.

9. The method of claim 7 , further comprising entering the obstructed launch command from a command entry device that is one of a control area having manually depressible buttons, a switch, a touch screen, and a smartphone app.

10. The method of claim 7 , wherein the typical reference launch speed is an engine speed of approximately 1000 RPM, the method further comprising elevating the engine speed more than 1000 RPM beyond the typical reference launch speed when elevating the engine speed of the vehicle beyond the typical reference launch speed.

11. The method of claim 7 , wherein the, fixed, pre-set period of time is approximately 15 seconds.

12. The method of claim 7 , further comprising:
receiving the kill command during the fixed, pre-set period of time;
discontinuing the elevated engine speed; and
setting the engine speed at the typical reference launch speed.

13. A controller for operating a truck, the controller configured to:
determine an engine speed that corresponds with a typical reference launch speed for when the truck is unobstructed;
receive an obstructed launch command from an operator of the truck, after the operator has determined that a road obstacle will not be overcome using the typical reference launch speed;
elevate an engine operation of a truck, for fixed period of time, that is pre-set to a fixed duration of time, beyond the typical reference launch speed upon receipt of the launch command to an obstructed launch engine speed; and
engage a clutch against a flywheel for the fixed period of time, unless a kill command is received from the operator, wherein if the kill command is received by the operator, then the engine operation is returned to the first engine speed.

14. The controller of claim 13 , wherein the controller is configured to control operation of a transmission, wherein the transmission is an automated manual transmission (AMT) that executes gear shifts and utilizes a clutch actuator, and without a clutch pedal.

15. The controller of claim 13 , wherein the typical reference launch speed is an engine speed of approximately 1000 RPM, and wherein the controller is configured to elevate the engine speed to the obstructed launch speed of at least 1000 RPM beyond the typical reference launch speed upon receipt of the launch command.

16. The controller of claim 13 , wherein the engine operation that is elevated is one of an engine speed and an engine torque.

17. The controller of claim 13 , wherein the controller is configured to receive the kill command that discontinues the elevated engine speed and sets the engine speed at the typical reference launch speed for any remainder of the fixed period of time once the kill command is received.

Assignees

• Eaton Corp

Inventors

• Huff Gregory D

Classifications

• F16H2059/0243

  with push buttons, e.g. shift buttons arranged on steering wheel · CPC title

• B60W10/02 Primary

  including control of driveline clutches · CPC title

• B60Y2400/71

  Manual or semi-automatic, e.g. automated manual transmissions · CPC title

• B60W10/06

  including control of combustion engines · CPC title

• F16H59/12

  comprising push button devices · CPC title