Variations in piston second land pressure as a function of ring gap position
2010 (English)In: International Journal of Engine Research, ISSN 1468-0874, Vol. 11, no 2, 153-161 p.Article in journal (Refereed) Published
The inter-ring pressure and the potential reverse blow-by flow that can drive oil towards the combustion chamber can strongly influence the in-cylinder oil consumption in diesel engines. This paper reports on an experimental investigation of the effect of both cycle-to-cycle variations and variations over a longer period on inter-ring pressure. The inter-ring pressure and piston ring movement were also simulated as a function of ring gap position. The experimental part of the project showed small cycle-to-cycle variations in the second land pressure as well as large variations over time. Simulations of the second land pressure with different ring gap positions showed a similar range of variation in second land pressure as the experimental variation.
Place, publisher, year, edition, pages
2010. Vol. 11, no 2, 153-161 p.
blow-by, diesel engine, inter-ring pressure, measurement, ring dynamics, second land pressure, simulation
IdentifiersURN: urn:nbn:se:kth:diva-25415DOI: 10.1243/14680874JER05509ISI: 000277638600006ScopusID: 2-s2.0-77950988844OAI: oai:DiVA.org:kth-25415DiVA: diva2:358052
QC 201101042010-10-202010-10-202011-01-04Bibliographically approved