| dc.description.abstract |
This research was done to observe vibration rate on rotation engine include to find the vibration rate on various revolution of engine from voice velocity and amplitude pressure of voice rate with measurement direction on vertical, horizontal, and axial. The method used by measure vibration rate on car engine on top part of engine pully cooling fan by using vibration gauge. From vibration measurement result with various revolution per minute from 1000 – 3500 rpm with 500 rpm interval found various vibration characteristic. On vertical voice velocity measurement shown that increasing revolution of engine is align with increase of around 3 x 10-3 m/s for each 500 rpm increasing, and for amplitude pressure of voice on vertical measurement was 7,85 x 10-3 N/m2, for 2500 rpm significance increasing amplitude pressure of voice. Horizontal velocity of voice has 7,7 x 10-3 m/s and vertical velocity of voice has 7,42 x 10-3 m/s. Vertical velocity of voice have increase to various revolution of engine higher enough while horizontal and axial increase almost line graph. Than fluctuating increase. Vibration engine with various revolution of engine effect higher noise to vertical | en_US |
