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HCCI Combustion Phasing with Closed-Loop Combustion Control Using Variable Compression Ratio in a Multi-Cylinder Engine

In English

Författare

Summary, in English

This study applies Closed-Loop Combustion Control

(CLCC) using Variable Compression Ratio (VCR) and

cylinder balancing using variable lambda to solve the

problem. Step changes of set points for combustion

phasing, Compression Ratio (CR), and load together

with ramps of engine speed and inlet air temperature

are investigated. Performances of the controllers are

investigated by running the engine at either a constant

amount of injected fuel corresponding to an

approximate load of 1.5 or 2.5 bar BMEP and/or

constant speed of 2000 rpm. Commercial RON 92

gasoline is used in the test. The CLCC is found to be

fast and effective and has a potential of handling step

changes in a matter of cycles, while the speed and

temperature ramps need some more optimization of

the CLCC. The CR controller is very fast and has a

time constant corresponding to three engine cycles at

2000 rpm.

Publiceringsår

2003

Språk

Engelska

Sidor

1233-1245

Publikation/Tidskrift/Serie

SAE Transactions, Journal of Engines

Volym

112

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Society of Automotive Engineers

Ämne

  • Other Mechanical Engineering

Nyckelord

  • Variable Compression Ratio
  • Engine
  • HCCI
  • Combustion
  • Control

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0096-736X