Closed-Loop Control of Combustion Phasing in an HCCI Engine Using VVA and Variable EGR
Författare
Summary, in English
A homogeneous charge compression ignition (HCCI) engine requires closed-loop control of combustion phasing for reliable operation. Variable valve actuation (VVA) has previously been shown to enable cycle-to-cycle, cylinder-individual control with high precision, but suffers from a narrow operating range. Adding variable exhaust gas recirculation (EGR) to the closed-loop control structure can extend the operating range. A mid-ranging control structure is presented here for combined VVA and EGR actuations in a multi-cylinder engine. The control structure is simple to implement and preserves the fast, cylinder-individual, and precise actuation of the VVA system while extending the operating range. Experimental results verify the performance of the control structure.
Publiceringsår
2007
Språk
Engelska
Sidor
501-506
Publikation/Tidskrift/Serie
IFAC Proceedings Volumes
Volym
40
Länkar
Dokumenttyp
Konferensbidrag
Ämne
- Other Mechanical Engineering
- Control Engineering
Nyckelord
- EGR
- VVA
- HCCI
- Mid-ranging control
Conference name
5th IFAC Symposium on Advances in Automotive Control
Conference date
2007-08-20
Status
Published
Projekt
- Diesel HCCI in a Multi-Cylinder Engine