. Influence of valve setting on efficiency and capacity of a 25 horse power International Harvester Company gasoline engine. iciency. The high gasoline consumption at lowloads is due to the fact that all the tests ?/eremade a constant needle valve setting, adjustedat full load. At low loads the engine receivinga rich mixture, and was missing badly. This resultsin a high gasoline consumption. With a properly de-signed valve in the mixing chamber however betterresults could be obtained. The maximum power wasslightly increased, from 29,9 , in test numberone and 34,4 H,P, in teet num
. Influence of valve setting on efficiency and capacity of a 25 horse power International Harvester Company gasoline engine. iciency. The high gasoline consumption at lowloads is due to the fact that all the tests ?/eremade a constant needle valve setting, adjustedat full load. At low loads the engine receivinga rich mixture, and was missing badly. This resultsin a high gasoline consumption. With a properly de-signed valve in the mixing chamber however betterresults could be obtained. The maximum power wasslightly increased, from 29,9 , in test numberone and 34,4 H,P, in teet number 2, to 35,85 H,P,in test number 3, It should be noted thst no v/aterwas injected into the cylinders at overload. It is probable that the intake valveswere held open too long, for the wavy exhaust on theindicator cards illustiates a burning exhaust Euidvariable pressure. The mechanical efficiency howeverwas greatly increased. -92- We are indebted to the follov;ing studentsfor valuable assistance in naking the verious tests; L. E, Hibbard •15 H. H. Gwinn •16 F. L. Brewer •15 G. s. Gooley 14 F. £. Faulkner •15. V:d>^^^ £>^W^ -9 a-
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