Two portable laser instruments are described which allow the engineer to simply 'stand and point' laser beams at a target surface in order to obtain a measurement of time resolved vibration velocity. The first supplements the accelerometer and measures normal surface velocity but offers the advantage of non-contact measurement. Its use is demonstrated in detecting reduced nozzle pressures in fuel injectors. The second instrument is a laser torsional vibrometer which measures torsional oscillations of rotating machinery parts and in particular crankshaft oscillation. Comparisons are made with the more standard technique which utilises a slotted disc. The new instrument provides advantages of non-contact measurement, insensitivity to shaft radial motion and the ability to measure oscillations of shafts of arbitrary cross-section.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Laser tools for diesel engine diagnosis


    Additional title:

    Laserwerkzeuge fuer die Diagnose von Dieselmotoren


    Contributors:


    Publication date :

    1985


    Size :

    8 Seiten, 6 Bilder, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Laser tools for diesel engine diagnosis

    Eastwood,P.G. / Halliwell,N.A. / Gilbert,P. et al. | Automotive engineering | 1985


    Laser Tools for Diesel Engine Diagnosis

    Eastwood, P G / Halliwell, N A / Gilbert, P | SAGE Publications | 1985


    Laser tools for Diesel engine development

    Halliwell,N.A. / Pullen,L. / Baker,J. et al. | Automotive engineering | 1983


    Accurate Diesel engine tachometer for diagnosis

    Okuda Koki,JP | Automotive engineering | 1982


    Models as tools. Application to a diesel engine

    Hassenforder, M. / Gissinger, G. L. / International Federation of Automatic Control | British Library Conference Proceedings | 1997