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Impact of Dynamic Exhaust Valve Modelling
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Internal Combustion Engines.ORCID iD: 0000-0002-7975-5603
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Internal Combustion Engines.ORCID iD: 0000-0001-9483-7992
Scania CV AB.
2019 (English)Conference paper, Published paper (Refereed)
Abstract [en]

A method developed in SAE 2019-01-0058 to correctfor deviations from quasi-steady exhaust valve flow isimplemented on a single-cylinder GT-Power modeland the effects on pumping work and blowdown pulsecharacteristics are investigated. The valve flow area isalways reduced compared to the referencequasi-steady case. It decreases with higher pressureratios over the valve and increases with higherengines speeds. The reduced flow area increasespumping work with load and engine speed, thoughprimarily with engine speed. The magnitude of theblowdown pulse is reduced and the peak is shifted toa later crank angle.

Place, publisher, year, edition, pages
2019.
Series
SAE Technical Paper, ISSN 0148-7191, E-ISSN 2688-3627 ; 2019-01-2346
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-266366OAI: oai:DiVA.org:kth-266366DiVA, id: diva2:1383934
Conference
JSAE/SAE 2019 International Powertrains, Fuels and Lubricants Meeting, Kyoto
Note

QC 20200113

Available from: 2020-01-09 Created: 2020-01-09 Last updated: 2020-02-25Bibliographically approved

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No full text in DiVA

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https://www.sae.org/publications/technical-papers/content/2019-01-2346/

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Holmberg, Ted

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