WORKSHOP MANUAL W26 Wärtsilä NSD Nederland B.V. Engine type W26
Chapter 2.3
Subject
Running-in
Issue date June '00
Vibrations Values & units Vibration readings taken should always be expressed in: • velocity-rms = v(rms) [mm/s] and for turbocharger also in • acceleration-rms = a(rms) [m/s 2 ] Frequency range With the FFT analyzer v(rms) up to 200 Hz and on turbochargers a(rms) up to 800 Hz. Vibration levels Recommended vibration levels according to standards ISO 8528-9 and DIN 6280/11 Maximum vibration levels Engine block v(rms) = 28 mm/s Common base plate v(rms) = 25 mm/s 6L26, Turbocharger v(rms) = 45 mm/s a(rms) = 20 m/s 2 8L, 9L, 12V, 16V, 18V26 v(rms) = 40 mm/s Turbocharger a(rms) = 15 m/s 2 Typical vibration levels Engine block Common base plate Turbochargers Alternator bearing Pipelines
v(rms) = <20 mm/s v(rms) = <20 mm/s v(rms) = 20...40 mm/s a(rms) = 5...12 m/s 2 v(rms) = 10…15 mm/s v(rms) = 20…40 mm/s
Location of measurement points, drawings: Engine Turbocharger 6L26 Turbo charger 8L,9L,12V,16V and 18V26 Bracket turbocharger / Air cooler V26
9604ZT791 9604ZT792 9604ZT793 9604ZT794
130
