Apparatus and method for reading adaptive values out of motor vehicle control devices

• US 20070174503A1
• Filed: 03/27/2007
• Published: 07/26/2007
• Est. Priority Date: 09/30/2004
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Konrad, Heiko, Engelke, Marcus, Wohlwender, Mario, Engl, Maximilian
• Granted Patent: US 7,424,362 B2
• Time in Patent Office: Days
• US Class Current: 710/20
• CPC Class Codes: F02D 41/1402 Adaptive control
• CPC Class Codes: F02D 41/2429 Methods of calibrating or learning
• CPC Class Codes: F02D 41/2493 Resetting of data to a predefined set of values
• CPC Class Codes: F02D 41/28 Interface circuits

Abstract

A device and a method for reading out adaptation values of self-adapting functions from a motor vehicle control unit to an external readout unit are provided. The device consists of a motor vehicle control unit, an external readout unit, and a communication interface between the external readout unit and the motor vehicle control unit, the motor vehicle control unit including a nonvolatile memory for storing adapted parameters or parameter sets of the self-adapting functions. The motor vehicle control unit additionally includes a receiver for receiving at least one test value set transmitted by the external readout unit, a calculation unit for calculating at least one adaptation value as a function of the test value set and the adapted parameters or parameter sets, and a transmitter for transmitting the at least one calculated adaptation value to the external readout unit.

Claims

1. A device for reading out adaptation values of self-adapting functions from a motor vehicle control unit to an external readout unit, the device comprising:

a motor vehicle control unit;

an external readout unit; and

a communication interface between the external readout unit and the motor vehicle control unit,

wherein the motor vehicle control unit comprises

a nonvolatile memory for storing adapted parameters or parameter sets of the self-adapting functions;

a receiver configured to receive at least one test value set transmitted from the external readout unit;

a calculation unit configured to calculate at least one adaptation value as a function of the at least one test value set and the adapted parameters or parameter sets; and

a transmitter configured to transmit the at least one calculated adaptation value to the external readout unit.

2. The device according to claim 1, wherein the test value set describes a test operating point of the self-adapting function.

3. The device according to claim 1, wherein the test value set includes one or more operating-point-dependent test values.

4. The device according to claim 3, wherein, for a test value set which includes multiple operating-point-dependent test values, calculation of the adaptation values is performed sequentially.

5. The device according to claim 1, wherein at least one of the self-adapting functions comprises an adaptive program map or adaptive neuronal network.

6. The device according to claim 1, wherein the motor vehicle control unit is an engine control unit or a transmission control unit.

7. The device according to claim 1, wherein the communication interface is a serial interface.

8. The device according to claim 1, wherein the readout unit comprises at least one of a memory for storing the at least one adaptation value and a coupler for coupling to further devices.

9. The device according to claim 2, wherein the test value set includes one or more operating-point-dependent test values.

10. The device according to claim 9, wherein, for a test value set which includes multiple operating-point-dependent test values, calculation of the adaptation values is performed sequentially.

11. The device according to claim 2, wherein at least one of the self-adapting functions comprises an adaptive program map or adaptive neuronal network.

12. The device according to claim 2, wherein the motor vehicle control unit is an engine control unit or a transmission control unit.

13. The device according to claim 2, wherein the communication interface is a serial interface.

14. The device according to claim 2, wherein the readout unit comprises at least one of a memory for storing the at least one adaptation value and a coupler for coupling to further devices.

15. The device according to claim 3, wherein at least one of the self-adapting functions comprises an adaptive program map or adaptive neuronal network.

16. The device according to claim 3, wherein the motor vehicle control unit is an engine control unit or a transmission control unit.

17. The device according to claim 3, wherein the communication interface is a serial interface.

18. The device according to claim 3, wherein the readout unit comprises at least one of a memory for storing the at least one adaptation value and a coupler for coupling to further devices.

19. The device according to claim 4, wherein at least one of the self-adapting functions comprises an adaptive program map or adaptive neuronal network.

20. A method for reading out adaptation values of self-adapting functions from a motor vehicle control unit to an external readout unit, the motor vehicle control unit storing adapted parameters or parameter sets of the self-adapting functions, comprising the acts of:

transmitting at least one test value set describing a test operating point from the external read out unit to the motor vehicle control unit;

calculating, in the motor vehicle control unit, at least one adaptation value from the test value set and the adapted parameters or parameter sets; and

transmitting the at least one adaptation value to the readout unit.