Comparison on the sound power levels and performance of cooling fans

Johannes Hyrynen, Kari P. Saarinen, Kimmo Heinonen

    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. A test setup for determining valve mechanism generated noise consisted of a medium speed diesel engine including the engine block, cam and crank covers, cylinder heads and valve mechanism. The camshaft was driven with an electric motor. Sound power level measurements were carried out in order to find out the contribution of the valve mechanism generated noise. Strain gauge and acceleration measurements were made to determine valve impact forces. The effect of valve clearances was studied. Reference measurements were carried out using a normally operating engine. The sound power generated by the valve mechanism can be studied using FEM and BEM modeling. The excitations can be modeled using a multibody model of the valve mechanism. Also measured valve and push rod forces may be used to estimate the excitation forces. The measured sound power of the valve mechanism turned out to be less than 10 % of the total sound power of the engine.
    Original languageEnglish
    Title of host publicationProceedings of Internoise 2008
    Place of PublicationShanghai
    Publication statusPublished - 2008
    MoE publication typeB3 Non-refereed article in conference proceedings
    Event37th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2008 - Shanghai, China
    Duration: 26 Oct 200829 Oct 2008

    Conference

    Conference37th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2008
    Abbreviated titleINTER-NOISE
    CountryChina
    CityShanghai
    Period26/10/0829/10/08

    Fingerprint

    Fans
    Acoustic waves
    Engines
    Cooling
    Diesel engines
    Fuel pumps
    Acceleration measurement
    Camshafts
    Level measurement
    Cylinder heads
    Cams
    Electric motors
    Strain gages
    Pistons
    Gears
    Finite element method

    Cite this

    Hyrynen, J., Saarinen, K. P., & Heinonen, K. (2008). Comparison on the sound power levels and performance of cooling fans. In Proceedings of Internoise 2008 Shanghai.
    Hyrynen, Johannes ; Saarinen, Kari P. ; Heinonen, Kimmo. / Comparison on the sound power levels and performance of cooling fans. Proceedings of Internoise 2008. Shanghai, 2008.
    @inproceedings{eddc93b268d94d79805a1b9ff9b24cb9,
    title = "Comparison on the sound power levels and performance of cooling fans",
    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. A test setup for determining valve mechanism generated noise consisted of a medium speed diesel engine including the engine block, cam and crank covers, cylinder heads and valve mechanism. The camshaft was driven with an electric motor. Sound power level measurements were carried out in order to find out the contribution of the valve mechanism generated noise. Strain gauge and acceleration measurements were made to determine valve impact forces. The effect of valve clearances was studied. Reference measurements were carried out using a normally operating engine. The sound power generated by the valve mechanism can be studied using FEM and BEM modeling. The excitations can be modeled using a multibody model of the valve mechanism. Also measured valve and push rod forces may be used to estimate the excitation forces. The measured sound power of the valve mechanism turned out to be less than 10 {\%} of the total sound power of the engine.",
    author = "Johannes Hyrynen and Saarinen, {Kari P.} and Kimmo Heinonen",
    note = "Project code: 12970",
    year = "2008",
    language = "English",
    booktitle = "Proceedings of Internoise 2008",

    }

    Hyrynen, J, Saarinen, KP & Heinonen, K 2008, Comparison on the sound power levels and performance of cooling fans. in Proceedings of Internoise 2008. Shanghai, 37th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2008, Shanghai, China, 26/10/08.

    Comparison on the sound power levels and performance of cooling fans. / Hyrynen, Johannes; Saarinen, Kari P.; Heinonen, Kimmo.

    Proceedings of Internoise 2008. Shanghai, 2008.

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

    TY - GEN

    T1 - Comparison on the sound power levels and performance of cooling fans

    AU - Hyrynen, Johannes

    AU - Saarinen, Kari P.

    AU - Heinonen, Kimmo

    N1 - Project code: 12970

    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. A test setup for determining valve mechanism generated noise consisted of a medium speed diesel engine including the engine block, cam and crank covers, cylinder heads and valve mechanism. The camshaft was driven with an electric motor. Sound power level measurements were carried out in order to find out the contribution of the valve mechanism generated noise. Strain gauge and acceleration measurements were made to determine valve impact forces. The effect of valve clearances was studied. Reference measurements were carried out using a normally operating engine. The sound power generated by the valve mechanism can be studied using FEM and BEM modeling. The excitations can be modeled using a multibody model of the valve mechanism. Also measured valve and push rod forces may be used to estimate the excitation forces. The measured sound power of the valve mechanism turned out to be less than 10 % of the total sound power of the 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. A test setup for determining valve mechanism generated noise consisted of a medium speed diesel engine including the engine block, cam and crank covers, cylinder heads and valve mechanism. The camshaft was driven with an electric motor. Sound power level measurements were carried out in order to find out the contribution of the valve mechanism generated noise. Strain gauge and acceleration measurements were made to determine valve impact forces. The effect of valve clearances was studied. Reference measurements were carried out using a normally operating engine. The sound power generated by the valve mechanism can be studied using FEM and BEM modeling. The excitations can be modeled using a multibody model of the valve mechanism. Also measured valve and push rod forces may be used to estimate the excitation forces. The measured sound power of the valve mechanism turned out to be less than 10 % of the total sound power of the engine.

    M3 - Conference article in proceedings

    BT - Proceedings of Internoise 2008

    CY - Shanghai

    ER -

    Hyrynen J, Saarinen KP, Heinonen K. Comparison on the sound power levels and performance of cooling fans. In Proceedings of Internoise 2008. Shanghai. 2008