Mechatronic vehicle powertrain control system

• US 6,920,865 B2
• Filed: 01/29/2003
• Issued: 07/26/2005
• Est. Priority Date: 01/29/2002
• Status: Active Grant

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Daimler Chrysler Corporation (Mercedes-Benz Group AG)
• Inventors: Lyon, Kim M
• Primary Examiner(s): Huynh, Hai
• Application Number:
  US10/353,703
• Publication Number:
  US 20030143957A1
• Time in Patent Office: 909 Days
• Field of Search: 123/399, 123/361, 701/103, 701/110
• US Class Current: 123/399
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 2510/0275 Clutch torque
• CPC Class Codes: B60W 2510/0657 Engine torque
• CPC Class Codes: B60W 2510/105 Output torque
• CPC Class Codes: B60W 2530/10 Weight
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2552/15 Road slope, i.e. the inclination of a road segment in the longitudinal direction
• CPC Class Codes: B60W 2552/40 Coefficient of friction
• CPC Class Codes: B60W 2555/20 Ambient conditions, e.g. wind or rain
• CPC Class Codes: B60W 2710/0605 Throttle position
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60W 30/188 Controlling power parameters of the driveline, e.g. determining the required power

Abstract

An arrangement is provided for controlling a motor vehicle powertrain. The controller comprises means for measuring an operator request for acceleration, and means for controlling the component as a function of the operator request for acceleration.

Claims

1. A method of controlling a motor vehicle powertrain system, the method comprising:

receiving an input indicative of an operator request for acceleration; and

controlling a plurality of powertrain components as a function of the input so as to maximize powertrain responsiveness using a control strategy that mediates competing torque demands among the plurality of components so that the operator request is prioritized as a core control parameter, wherein mediating the competing torque demands comprises determining other powertain component torque demands and using an optimizer routine having hierarchical weighted control laws to determine an optimized target before issuing a torque command to a torque provider.

2. The method of claim 1, wherein receiving an input comprises receiving an input responsive to throttle position.

5. The method of claim 1, wherein controlling the components comprises:

determining vehicle acceleration potential based on known vehicle parameters, wherein determining vehicle acceleration potential comprises;

detecting an applicable vehicle operating regime from a set of operating regimes based on predetermined vehicle operating conditions; and

hierarchically mediating competing torque demands based on the determined vehicle operating regime and the vehicle acceleration potential.

6. The method of claim 5, wherein the vehicle operating regime and the vehicle acceleration potential are uniquely determined at any instant in time by calculation of modeled parameters and the operation of any adjunct powertrain systems are controlled so as to integrate such systems into global powertrain operation in a prioritized manner.

7. The method of claim 5, wherein mediating further comprises using a logical state machine, wherein competing demands are hierarchically adjudicated serially or in parallel according to previously defined state machine logic rules.

8. The method of claim 1, wherein controlling the components comprises referring to a three dimensional calibration surface.

9. The method of claim 8, wherein a dimension of the calibration surface is selected from the group of speed, acceleration rate goal, and required horsepower.

3. The method of claim 3, wherein receiving an input comprises measuring a change in throttle position with an electronic throttle controller.

4. The method of claim 3, wherein the electronic throttle controller measures a rate of change of the throttle position.

10. A powertrain controller for controlling a vehicle powertrain system, the controller comprising:

a control module arranged to receive an input indicative of an operator request for acceleration; and

a processor arranged to control a plurality of components in the vehicle powertrain system as a function of the request so as to maximize powertrain responsiveness using a control strategy that mediates competing torque demands among the plurality of components so that the operator request is prioritized as a core control parameter, wherein the processor is arranged to mediate between the competing torque demands by determining other powertrain component torque demands and using an optimizer routine having hierarchical weighted control laws to determine an optimized target before issuing a torque command to a torque provider.

11. The powertrain controller of claim 10, wherein the controller is coupled to a torque measuring transducer in operative communication with an engine of the motor vehicle.

12. The powertrain controller of claim 10, wherein the processor further comprises a look-up table of data representative of a three dimensional calibration surface.

13. The powertrain controUer of claim 12, wherein a dimension of the calibration surface is selected from the group of speed, acceleration rate goal, and required horsepower.