Engine vibration indication, Other Engineering

Engine Vibration Indication

The engine vibration monitoring (EVM) system shows the out of balance force for the N1 and N2 shaft.

High engine vibration shows engine damage or other deviations in the engine. Vibration also reduces the comfort level in the aft passenger compartment.

Engine Vibration Monitoring System

The EVM system shows vibration in inches/second (IPS) An amber limit shows the maximum vibration level.

The EVM system has:
• a dual engine vibration transducer on each engine
• an engine vibration signal conditioner
• a pushswitch on the overhead panel.

The vibration transducer has two internal vibration pick-ups, a pick-up A and B. each pick-up gives a voltage proportional to the acceleration or deceleration of the vibration.

The vibration transducer is on the IP compressor casing. This casing is the housing for bearings of the HP and LP shaft.

The engine vibration signal conditioner is a single unit for both engines. It processes the output of the engine vibration transducers for indication. The engine vibration signal conditioner gives two modes of vibration indication, tracked and broadband.

Tracked Indication

The tracked mode shows vibration of the N1 and N2 shaft. The engine vibration signal conditioner tunes two filters with an input of the N1 and N2 RPM indicator generators. Both filters connect to one pick-up of the vibration transducer, the other is standby. The VIB pushswitch on the ENGINE panel controls the active pick-up of the vibration transducer.

Broadband Indication

The broadband mode is an alternative mode. Vibration of the total power plant is shown. In this mode the output of both pick-ups in the vibration transducer goes through broadband filters. A semi-guarded switch selects the tracked or broadband mode.


Inte

1031_Engine Vibration Indication.png

Posted Date: 9/12/2012 9:15:19 AM | Location : United States







Related Discussions:- Engine vibration indication, Assignment Help, Ask Question on Engine vibration indication, Get Answer, Expert's Help, Engine vibration indication Discussions

Write discussion on Engine vibration indication
Your posts are moderated
Related Questions
derive the power in case of r-l circuit

Calculatethe tax disadvantage to organizing a U.S. business today, after passage of the Jobs and growth Tax relief reconciliation act of 2003, as a corporation versus a partnership

Air-System in Aircraft Engine: In the working cycle and airflow section we discussed the main airflow and working cycle of a gas turbine engine and found that a major function

I need help for my project report plz. > Precast concrete panels manufactured in factory environments and rapidly cured using steam are being used for the walls of shallow foundati

WORKING OF I.C. ENGINE Basically there are 2 types of internal combustion engines; the two stoke type and the 4-stroke type. A brief description of these is given below: 1.

draw folded plate roof structure on multi purpose hall?

from suction side oil comes out

my course is master in telecommunication and i need it today is it possible?

Fourier’s law of heat conduction For one dimension; q(x) = - k dT/dx (2.1) wher