Results are presented for a series of tests on spark ignition 4-stroke engines between 4.8 cc and 15 cc in capacity. Engines with conventional rings are compared with ringless engines relying on a close fitting piston to seal the combustion gases. Attempts to improve the engine efficiency by thermal insulation using both ceramic components and ceramic layers resulted in a considerable decrease in engine efficiency.
Tests on very small four-stroke spark ignition engines
Versuche an Viertaktmotoren mit elektrischer Zündung
The Small Internal Combustion Engine, Proc. of the I Mech E Int. Conf. ; 3 , Apr ; 105-109
1989
5 Seiten, 5 Bilder, 5 Quellen
Aufsatz (Konferenz)
Englisch
Tests on very small four-stroke spark ignition engines
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