PREVIOUS studies of flame propagation in a gasoline engine have suffered from the handicap that only a partial view of the combustion space was obtained. This disadvantage has now been overcome by covering the whole top of a single-cylinder ell-head engine with a quartz plate so that an unobstructed view of the combustion-chamber is allowed.To record, at known intervals, the progress and shape of the flame fronts a special camera has been built which photographs 30 individual pictures of a single explosion. Simultaneously, a pressure-time card is recorded. The interval between pictures is 2.4 crankshaft degrees; consequently, 5000 pictures per sec. are photographed at an engine speed of 2000 r.p.m.These photographs may be studied individually or projected as “slow-motion” movies which show the ignition spark, the spread of the flame through the charge, and the gas movements behind the flame.Pictures of non-knocking and knocking explosions are presented. The latter reveal in a most striking manner the occurrence of spontaneous ignition in sections of the charge well ahead of, and completely separated from, the advancing flame front.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Slow Motion Shows Knocking and Non-Knocking Explosions


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Pre-1964 SAE Technical Papers ; 1906



    Publication date :

    1936-01-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Slow motion shows knocking and non-knocking explosions

    Withrow, L. / Rassweiler, G.M. | Engineering Index Backfile | 1936


    Knocking octanes

    Van Hartesveldt, C.H. / Field, H.W. | Engineering Index Backfile | 1940


    Visualisation of knocking combustion

    British Library Online Contents | 2008


    The Phenomenon of Knocking

    Taylor, E.S. | Emerald Group Publishing | 1933


    The CSTR for Knocking Investigation

    Lignola,P.G. / Univ.di Napoli,Ist.di Chim.Ind.e Impianti Chim.,IT Ist.di Ric.sulla Combust.,Napoli,IT | Automotive engineering | 1981