Title: Predictive modeling and reducing cyclic variability in autoignition engines

Abstract

Methods and systems are provided for controlling a vehicle engine to reduce cycle-to-cycle combustion variation. A predictive model is applied to predict cycle-to-cycle combustion behavior of an engine based on observed engine performance variables. Conditions are identified, based on the predicted cycle-to-cycle combustion behavior, that indicate high cycle-to-cycle combustion variation. Corrective measures are then applied to prevent the predicted high cycle-to-cycle combustion variation.

Inventors:

Hellstrom, Erik; Stefanopoulou, Anna; Jiang, Li; Larimore, Jacob

Issue Date:

Tue Aug 30 00:00:00 EDT 2016

Research Org.:

The Regents of the University of Wisconsin, Ann Arbor, MI (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1312576

Patent Number(s):

9429096

Application Number:

13/621,539

Assignee:

The Regents of the University of Wisconsin

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES

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

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES

F02B1/12 - with compression ignition

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

F02D13/0265 - {Negative valve overlap for temporarily storing residual gas in the cylinder}
F02D2041/1432 - {the system including a filter, e.g. a low pass or high pass filter}
F02D2200/0616 - determined by estimation
F02D35/024 - {using an estimation}
F02D35/025 - {by determining temperatures inside the cylinder, e.g. combustion temperatures}
F02D35/026 - {using an estimation}
F02D35/028 - {by determining the combustion timing or phasing}
F02D41/3035 - {a mode being the premixed charge compression-ignition mode}
F02D41/40 - with means for controlling injection timing or duration

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
Y02T10/40 - Engine management systems

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DOE Contract Number:  

EE0003533

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Sep 17

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING; 33 ADVANCED PROPULSION SYSTEMS