Method and control unit for operating an engine of a vehicle

Patent metadata

Field	Value
Publication number	US-10994738-B2
Application number	US-202016735821-A
Country	US
Kind code	B2
Filing date	Jan 7, 2020
Priority date	Jan 10, 2019
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A method for operating an engine of a vehicle, in which after an execution of an automated gear change of a transmission of the vehicle, an acceleration force for accelerating the vehicle is requested when a force value representing a present drive force of the engine is in a tolerance band around a reference value determined before the gear change and a request signal for the acceleration force exists.

First claim

What is claimed is:

1. A method for operating an engine of a vehicle, comprising the following steps:
executing an automated gear change of a transmission of the vehicle; and
after the execution of the automated gear change, in the case of an existing request signal for requesting an acceleration force for accelerating the vehicle, releasing the request when a force value representing a present drive force of the engine is within a tolerance band around a reference force value determined before the gear change.

2. The method as recited in claim 1 , wherein the request is released when a curve of the force value includes a positive gradient.

3. The method as recited in claim 1 , wherein the request is released when the force value is within the tolerance band longer than a debouncing period of time.

4. The method as recited in claim 1 , wherein the reference force value is determined when the gear change is requested.

5. The method as recited in claim 4 , wherein the reference force value is determined delayed by an overshoot period of time.

6. The method as recited in claim 1 , wherein the reference force value is determined when the gear change is executed.

7. The method as recited in claim 1 , wherein the reference force value is corrected using a correction factor, the correction factor representing a transmission difference between transmission ratios of the transmission before and after the gear change.

8. The method as recited in claim 1 , wherein a breadth of the tolerance band is set as a function of a weight of the vehicle.

9. A control unit configured to operate an engine of a vehicle, the control unit configured to:
execute an automated gear change of a transmission of the vehicle; and
after the execution of the automated gear change, in the case of an existing request signal for requesting an acceleration force for accelerating the vehicle, release the request when a force value representing a present drive force of the engine is within a tolerance band around a reference force value determined before the gear change.

10. A non-transitory machine-readable storage medium on which is stored a computer program product including a computer program for operating an engine of a vehicle, the computer program, when executed by a computer, causing the computer to perform the following steps:
executing an automated gear change of a transmission of the vehicle; and
after the execution of the automated gear change, in the case of an existing request signal for requesting an acceleration force for accelerating the vehicle, releasing the request when a force value representing a present drive force of the engine is within a tolerance band around a reference force value determined before the gear change.

Assignees

• Bosch Gmbh Robert

Inventors

• Schultz Andreas
• Pfeil Benjamin
• Michels Leo
• Brettschneider Thomas

Classifications

• B60W10/06

  including control of combustion engines · CPC title

• F02D2250/21

  during a transition between engine operation modes or states · CPC title

• F02D41/1497

  With detection of the mechanical response of the engine · CPC title

• B60W10/10

  including control of change-speed gearings · CPC title

• F16H61/0437 Primary

  by using electrical signals (F16H61/0403 and F16H61/061 take precedence) · CPC title