Adjusting the specificity of an engine map based on the sensitivity of an engine control parameter relative to a performance variable
Methods and systems for engine control optimization are provided. A first and a second operating condition of a vehicle engine are detected. An initial value is identified for a first and a second engine control parameter corresponding to a combination of the detected operating conditions according to a first and a second engine map look-up table. The initial values for the engine control parameters are adjusted based on a detected engine performance variable to cause the engine performance variable to approach a target value. A first and a second sensitivity of the engine performance variable are determined in response to changes in the engine control parameters. The first engine map look-up table is adjusted when the first sensitivity is greater than a threshold, and the second engine map look-up table is adjusted when the second sensitivity is greater than a threshold.
- Research Organization:
- Robert Bosch GmbH, Stuttgart, DE (Germany)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-07NT43274
- Assignee:
- Robert Bosch GmbH (Stuttgart, DE)
- Patent Number(s):
- 8,874,351
- Application Number:
- 13/435,535
- OSTI ID:
- 1162104
- Resource Relation:
- Patent File Date: 2012 Mar 30
- Country of Publication:
- United States
- Language:
- English
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