File:Electric ignition for gas engines (1908) (14765113372).jpg

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English:

Identifier: electricignition00neum (find matches)
Title: Electric ignition for gas engines
Year: 1908 (1900s)
Authors: Neuman, John Adams
Subjects: Gas Internal combustion engines Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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e. Notice that there are only 74 explosions. Card 5 shows a retardation of ,6;b, a very small amountbut the decrease in m, e. p. is very marked. It will be no-ticed that the initial pressure drops rapidly as the spark isretarded. Card 6 shows a retardation of S.l/o of. stroke. Less poweris developed than in case 5. Card 7 shows a retardation of 9.4v:>. In this case the powerhas become very low, the consumption of gas has become high.The gas is still burning as it exhausts, The^e tests show very clearly tho effect of time of ignition 16 on the power vleveloped in the cylinJor. If the spark occurBa very little before or after the right time the power will beout down materially. Thj fact is taken advantage of in the operation of auto-mobile engines, A lever is attached to tho timer, by whichthe operator may advance or retard the spark at will. By theuse of this lever together with the throttle lever the driverhas perfect control of the engine, governing the speed andpower accordingly.
Text Appearing After Image:
18 E. PHYSICAL AHPEGT OP THE EXPLOSION. Prof, llernst has made some careful inveati^ationB on theexplosive action and reaction in the cylinder. The followingis a Bunmary of his results. As is well known, explosion motors produce very much lesspower than they would if the gases were used ideally. Theextremely high temperatures of ignition cause very great lossesdue t© radiation, (much heat is carried away by the cooling wa-ter), and is also impractical to allow the gases to cool adia-batically to atmospheric temperature, the gases being exhaustedat several hundred degrees Fahr. Let us examine the processof combustion. At ordinary temperatures a mixture of hydrogen and oxygenwill not unite chemically, or if there is any action it is soslow that it can not be detected. 1/Vhen heated several hundreddegrees the reaction becomes measurable, and at very high tem-peratures it becomes very rapid. Thus we have a method ofburning the gases which is very simple. Pass an electricspark through the

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Author Neuman, John Adams
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Flickr tags
InfoField
  • bookid:electricignition00neum
  • bookyear:1908
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:Neuman__John_Adams
  • booksubject:Gas
  • booksubject:Internal_combustion_engines
  • booksubject:Theses
  • bookcontributor:University_of_Illinois_Urbana_Champaign
  • booksponsor:University_of_Illinois_Urbana_Champaign
  • bookleafnumber:42
  • bookcollection:university_of_illinois_urbana-champaign
  • bookcollection:americana
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28 July 2014
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