Cut-Off Control: A Promising Method of Load Regulation in Spark Ignition Engine

Paper #:
  • 940202

Published:
  • 1994-03-01
Citation:
Abdalla, M., "Cut-Off Control: A Promising Method of Load Regulation in Spark Ignition Engine," SAE Technical Paper 940202, 1994, https://doi.org/10.4271/940202.
Pages:
9
Abstract:
This paper presents a theoretical and experimental study of the effect of cut-off control on engine performance. Cut-off control is an alternative method of load regulation in spark ignition engine. During cut-off operation, the charge is admitted at wide open throttle, hence the inlet charge passage is to be shut down before the completion of intake stroke. Cut-off is to be attained by means of an additional rotary valve mounted in series with the conventional inlet valve. The study indicates that cut-off control can provide a significant improvement in fuel economy. The effect of some important design parameters is also considered.
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