10th Symposium "The Working Process of the Internal Combustion Engine"
Practical Realization of the Atkinson Cycle as an Efficient Combustion System for SI engines
Authors
Dipl.-Ing. Franz Brinkmann, Dr. Patrick Phlips, Dr. Andreas Schamel, Ford-Werke GmbH Motorenvorentwicklung, Köln
Year
2005
Summary
In a study an Atkinson cycle was realized by late intake valve closing combined with raised compression ratio. In particular, the intake system was adapted to the valve timing, to extend the operating range of the engine to high speeds. In addition, a synergy was found between the Atkinson cycle and camshaft phasing. Measurements proved that it is possible to reduce fuel consumption throughout the engine operating map, and to use this concept as sole vehicle propulsion. This Atkinson concept enables high engine efficiency with reduced specific performance.
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