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