Ludy, Llewellyn V., 1875- [from old catalog], American Technical Society · Chicago, American technical society · leaf 87
portray too much back pressure. While in these cards it was dueto defects in the indicator, rather than in the engine, yet this exces-sive back pressure is sometimes found due to inherent defects in the 74 STEAM ENGINE INDICATORS design of the engine, such as too small exhaust ports or pipes, or… … Fig. 62. Diagram Showing Effect of Too Early Cut-Off useful work, such as heating, etc., an increased back pressure abovethe normal is permissible. Early Cut-Off. The diagram, Fig. 62, shows the c.o. to come tooearly. In this case the c.o. is so early that the expansion line extendsbelow the…
Indicators for steam-engines · Steam-engines
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