Title: Adjusting the specificity of an engine map based on the sensitivity of an engine control parameter relative to a performance variable

Abstract

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.

Inventors:

Jiang, Li; Lee, Donghoon; Yilmaz, Hakan; Stefanopoulou, Anna

Issue Date:

Tue Oct 28 00:00:00 EDT 2014

Research Org.:

Robert Bosch GmbH, Stuttgart, DE (Germany)

Sponsoring Org.:

USDOE

OSTI Identifier:

1162104

Patent Number(s):

8874351

Application Number:

13/435,535

Assignee:

Robert Bosch GmbH (Stuttgart, DE)

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02P - IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

F02D13/0215 - {changing the valve timing only}
F02D19/084 - {Blends of gasoline and alcohols, e.g. E85}
F02D2041/001 - {for engines with variable valve actuation}
F02D2041/1419 - {the control loops being cascaded, i.e. being placed in series or nested}
F02D2041/1432 - {the system including a filter, e.g. a low pass or high pass filter}
F02D37/02 - one of the functions being ignition
F02D41/08 - for idling
F02D41/1406 - {with use of a optimisation method, e.g. iteration}
F02D41/1408 - {Dithering techniques}
F02D41/2432 - {Methods of calibration}
F02D41/2438 - {Active learning methods}
F02D41/2441 - {characterised by the learning conditions}
F02D41/2445 - {characterised by a plurality of learning conditions or ranges}
F02D41/248 - {using a plurality of learned values}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02P - IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES

F02P5/153 - dependent on combustion pressure

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE
Y02T10/30 - Use of alternative fuels
Y02T10/40 - Engine management systems

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DOE Contract Number:  

FC26-07NT43274

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Mar 30

Country of Publication:

United States

Language:

English

Subject:

33 ADVANCED PROPULSION SYSTEMS