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Title: Nonlinear model-based controller for premixed charge compression ignition combustion timing in diesel engines

Advanced combustion modes, such as PCCI, operate near the system stability limits. In PCCI, the combustion event begins without a direct combustion trigger in contrast to traditional spark-ignited gasoline engines and direct-injected diesel engines. The lack of a direct combustion trigger encourages the usage of model-based controls to provide robust control of the combustion phasing. The nonlinear relationships between the control inputs and the combustion system response often limit the effectiveness of traditional, non-model-based controllers. Accurate knowledge of the system states and inputs is helpful for implementation of an effective nonlinear controller. A nonlinear controller is developed and implemented to control the engine combustion timing during diesel PCCI operation by targeting desired values of the in-cylinder oxygen concentration, pressure, and temperature during early fuel injection.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1485292
Assignee:
Purdue Research Foundation (West Lafayette, IN) DOEEE
Patent Number(s):
10,094,306
Application Number:
14/651,521
Contract Number:
EE0003403
Resource Relation:
Patent File Date: 2013 Dec 12
Research Org:
Purdue Research Foundation, West Lafayette, IN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING