HCCI Closed-Loop Combustion Control Using Fast Thermal Management Division of Combustion Engines, Lund Institute of Technology

Format:

Conference/Event

Author/Creator:

Haraldsson, Göran, author.

Conference Name:

SAE 2004 World Congress & Exhibition (2004-03-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2004

Summary:

This study applies Closed-Loop Combustion Control (CLCC) using Fast Thermal Management (FTM) on a multi cylinder Variable Compression Ratio (VCR) engine together with load control, to achieve a favorable combustion phasing and load at all times. Step changes of set points for combustion phasing, Compression Ratio (CR), and load together with ramps of engine speed with either constant load, id est load control enabled, or constant fuel amount are investigated. Performances of the controllers are investigated by running the engine and comparing the result with CLCC using VCR, which was used in an earlier test. Commercial RON/MON 92/82 gasoline, which corresponds to US regular, is used in the transient tests. Limitations to the speed ramps are further examined and it is found that choice of fuel and its low temperature reaction properties has large impact on how the CLCC perform. The CLCC using FTM handles step changes in combustion phasing fairly well and has a time constant of 8 engine cycles, which is 57% faster than the CLCC using VCR even though it suffers from the large air volume between throttle and engine inlet

Notes:

Vendor supplied data

Publisher Number:

2004-01-0943

Access Restriction:

Restricted for use by site license