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HCCI Closed-Loop Combustion Control Using Fast Thermal Management

In English

Författare

Summary, in English

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, i.e., 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.

Publiceringsår

2004

Språk

Engelska

Sidor

599-610

Publikation/Tidskrift/Serie

SAE Transactions, Journal of Engines

Volym

113

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

Society of Automotive Engineers

Ämne

  • Other Mechanical Engineering

Nyckelord

  • Combustion
  • Control
  • HCCI
  • Engine

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0096-736X