Slow Motion Shows Knocking and Non-Knocking Explosions

Format:

Conference/Event

Author/Creator:

Withrow, Lloyd, author.

Conference Name:

Semi-Annual Meeting of the Society

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1936

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

360126

Access Restriction:

Restricted for use by site license