. American engineer and railroad journal . --==£. The point in dispute is, What is the proper amount of com-pression in engines having considerable clearance, especiallylocomotives 7 It is almost universally believed by locomotive builders,and to some extent claimed by stationary engine builders, thatcompression should be carried up to the admission pressure. Professor J. Burkitt Webb, in a paper before the AmericanAssociation for the Advancement of Science, has describedthe proper point of compression to be the point B on the dia-gram, where the area .1 B C is equal to the area D E F. Thispla
. American engineer and railroad journal . --==£. The point in dispute is, What is the proper amount of com-pression in engines having considerable clearance, especiallylocomotives 7 It is almost universally believed by locomotive builders,and to some extent claimed by stationary engine builders, thatcompression should be carried up to the admission pressure. Professor J. Burkitt Webb, in a paper before the AmericanAssociation for the Advancement of Science, has describedthe proper point of compression to be the point B on the dia-gram, where the area .1 B C is equal to the area D E F. Thisplan docs not take into consideration the loss resulting fromthe heating up of the metal surrounding the clearance spacesduring compression. In some engines the heat that is takenfrom the compressed steam in this way is considerable, espe-cially in locomotives, where the cylinder-heads are badly in-sulated. The diagram with this shows a case of this kind, where theactual compression line G B falls below the line of equal steamweight G H. It is cert
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
