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TWO Stroke Engines - The Lotus Approach
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1992 by SAE International in United States
Annotation ability available
The recent interest in two-stroke engines for automotive use has produced powerplants of such divergence that as yet, no clear outlook on a likely design is evident. The only common similarity between all the published engines is direct fuel injection. Whilst this is undoubtedly necessary, the effects of exhaust and scavenging systems play a significant role in the overall performance of the engine.
This paper initially describes a valve mechanism providing infinitely variable control of the exhaust port opening point, together with the ability to effectively close the exhaust port at the end of the scavenge period. Such a valve has been tested in a single cylinder, 400 cc loop scavenged engine giving encouraging results.
The concept of a rotary inlet valve, situated in the cylinder head is also discussed with a view to achieving uniflow scavenging.
CitationBlundell, D. and Sandford, M., "TWO Stroke Engines - The Lotus Approach," SAE Technical Paper 920779, 1992, https://doi.org/10.4271/920779.
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