| Autor: |
Bengt Johansson, Kent Ekholm, Per Tunestål, Rolf Johansson, Maria Karlsson, Petter Strandh |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
Scopus-Elsevier |
| ISSN: |
1474-6670 |
| DOI: |
10.3182/20070820-3-us-2918.00068 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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