Title: Fueling strategy for controlled-autoignition engines

Abstract

Methods and systems for controlling combustion performance of an engine during recompression HCCI combustion are provided. The method includes regulating a valve actuation timing and a fuel injection timing to cause a combustion phasing of at least one cylinder of the engine to approach a target combustion phasing, and estimating current combustion state information based on the combustion phasing. The current combustion state information includes at least one of a temperature, a pressure, and a pre-combustion charge composition associated with the at least one cylinder. The method further includes determining a target fuel injection amount, and determining whether the target fuel injection amount would require actuator settings that violate predetermined constraints in order to cause the combustion phasing to approach the target combustion phasing. A fuel injection amount is adjusted when the target fuel injection amount would require actuator settings that violate the predetermined constraints.

Inventors:

Jade, Shyam; Helstrom, Erik; Stefanopoulou, Anna; Jiang, Li

Issue Date:

2019-02-12

Research Org.:

Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1502831

Patent Number(s):

10202927

Application Number:

13/621,433

Assignee:

The Regents of the University of Michigan (Ann Arbor, MI)

Patent Classifications (CPCs):

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

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

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

F02D2041/141 - {using a feed-forward control element}
F02D2041/1412 - {using a predictive controller}
F02D2041/1416 - {Observer}
F02D35/023 - {by determining the cylinder pressure}
F02D35/028 - {by determining the combustion timing or phasing}
F02D41/2451 - {characterised by what is learned or calibrated}
F02D41/2464 - {Characteristics of actuators}
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