Cylinder pressure generated noise of medium speed diesel engine

Lasse Lamula, Kari P. Saarinen, Johannes Hyrynen, Kari Saine

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    Ranking of noise generation mechanisms is essential for designing low noise diesel engines. Engine noise is caused by several excitations or sources of noise, such as combustion, turbo charger, piston slap, valve mechanism, fuel pumps, gears and inertia forces. Noise generated by the cylinder pressure was studied using multipoint coherent power analysis. Cylinder pressure probes were mounted in all cylinders. Partial coherence functions were used to analyze the contribution of the cylinder pressures to the measured engine surface velocities. The effect of different fuels, diesel and gas, was studied comparing cylinder pressures and measured vibrations and sound power levels. It is already known that a gas engine is more silent than a similar diesel engine. The reasons for the disparity are differences in combustion processes and absence of the fuel pumps in gas engines. The fuel pump causes impulsive excitations via the cam shaft to the driving gear. The importance of these phenomena was studied using a dual fuel engine.
    Original languageEnglish
    Title of host publicationProceedings of Joint Baltic-Nordic Acoustics Meeting 2008
    Subtitle of host publicationAbstracts and Papers
    Place of PublicationReykjavik
    Publication statusPublished - 2008
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventJoint Baltic-Nordic Acoustics Meeting 2008, BNAM - Reykjavik, Iceland
    Duration: 17 Aug 200819 Aug 2008

    Conference

    ConferenceJoint Baltic-Nordic Acoustics Meeting 2008, BNAM
    Abbreviated titleBNAM
    CountryIceland
    CityReykjavik
    Period17/08/0819/08/08

    Fingerprint

    Engine cylinders
    Diesel engines
    Fuel pumps
    Gas engines
    Gears
    Dual fuel engines
    Engines
    Shafts (machine components)
    Gas fuels
    Cams
    Diesel fuels
    Pistons
    Vibrations (mechanical)
    Acoustic waves

    Keywords

    • engine noise
    • cylinder pressure

    Cite this

    Lamula, L., Saarinen, K. P., Hyrynen, J., & Saine, K. (2008). Cylinder pressure generated noise of medium speed diesel engine. In Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008: Abstracts and Papers Reykjavik.
    Lamula, Lasse ; Saarinen, Kari P. ; Hyrynen, Johannes ; Saine, Kari. / Cylinder pressure generated noise of medium speed diesel engine. Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008: Abstracts and Papers. Reykjavik, 2008.
    @inproceedings{97203d2448f94e33b47269bc8279162f,
    title = "Cylinder pressure generated noise of medium speed diesel engine",
    abstract = "Ranking of noise generation mechanisms is essential for designing low noise diesel engines. Engine noise is caused by several excitations or sources of noise, such as combustion, turbo charger, piston slap, valve mechanism, fuel pumps, gears and inertia forces. Noise generated by the cylinder pressure was studied using multipoint coherent power analysis. Cylinder pressure probes were mounted in all cylinders. Partial coherence functions were used to analyze the contribution of the cylinder pressures to the measured engine surface velocities. The effect of different fuels, diesel and gas, was studied comparing cylinder pressures and measured vibrations and sound power levels. It is already known that a gas engine is more silent than a similar diesel engine. The reasons for the disparity are differences in combustion processes and absence of the fuel pumps in gas engines. The fuel pump causes impulsive excitations via the cam shaft to the driving gear. The importance of these phenomena was studied using a dual fuel engine.",
    keywords = "engine noise, cylinder pressure",
    author = "Lasse Lamula and Saarinen, {Kari P.} and Johannes Hyrynen and Kari Saine",
    note = "Project code: 13756",
    year = "2008",
    language = "English",
    booktitle = "Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008",

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    Lamula, L, Saarinen, KP, Hyrynen, J & Saine, K 2008, Cylinder pressure generated noise of medium speed diesel engine. in Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008: Abstracts and Papers. Reykjavik, Joint Baltic-Nordic Acoustics Meeting 2008, BNAM, Reykjavik, Iceland, 17/08/08.

    Cylinder pressure generated noise of medium speed diesel engine. / Lamula, Lasse; Saarinen, Kari P.; Hyrynen, Johannes; Saine, Kari.

    Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008: Abstracts and Papers. Reykjavik, 2008.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    TY - GEN

    T1 - Cylinder pressure generated noise of medium speed diesel engine

    AU - Lamula, Lasse

    AU - Saarinen, Kari P.

    AU - Hyrynen, Johannes

    AU - Saine, Kari

    N1 - Project code: 13756

    PY - 2008

    Y1 - 2008

    N2 - Ranking of noise generation mechanisms is essential for designing low noise diesel engines. Engine noise is caused by several excitations or sources of noise, such as combustion, turbo charger, piston slap, valve mechanism, fuel pumps, gears and inertia forces. Noise generated by the cylinder pressure was studied using multipoint coherent power analysis. Cylinder pressure probes were mounted in all cylinders. Partial coherence functions were used to analyze the contribution of the cylinder pressures to the measured engine surface velocities. The effect of different fuels, diesel and gas, was studied comparing cylinder pressures and measured vibrations and sound power levels. It is already known that a gas engine is more silent than a similar diesel engine. The reasons for the disparity are differences in combustion processes and absence of the fuel pumps in gas engines. The fuel pump causes impulsive excitations via the cam shaft to the driving gear. The importance of these phenomena was studied using a dual fuel engine.

    AB - Ranking of noise generation mechanisms is essential for designing low noise diesel engines. Engine noise is caused by several excitations or sources of noise, such as combustion, turbo charger, piston slap, valve mechanism, fuel pumps, gears and inertia forces. Noise generated by the cylinder pressure was studied using multipoint coherent power analysis. Cylinder pressure probes were mounted in all cylinders. Partial coherence functions were used to analyze the contribution of the cylinder pressures to the measured engine surface velocities. The effect of different fuels, diesel and gas, was studied comparing cylinder pressures and measured vibrations and sound power levels. It is already known that a gas engine is more silent than a similar diesel engine. The reasons for the disparity are differences in combustion processes and absence of the fuel pumps in gas engines. The fuel pump causes impulsive excitations via the cam shaft to the driving gear. The importance of these phenomena was studied using a dual fuel engine.

    KW - engine noise

    KW - cylinder pressure

    M3 - Conference article in proceedings

    BT - Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008

    CY - Reykjavik

    ER -

    Lamula L, Saarinen KP, Hyrynen J, Saine K. Cylinder pressure generated noise of medium speed diesel engine. In Proceedings of Joint Baltic-Nordic Acoustics Meeting 2008: Abstracts and Papers. Reykjavik. 2008