. Influence of valve setting on efficiency and capacity of a 25 horse power International Harvester Company gasoline engine. loaded and balanced the error wasneglegible. The cooling water tanks, having been cal-ibrated a short time previous, were not re-calibrated. The thermometers were calibrated before andafter each run, showing no appreciable ST)rinp;s. The indicator springs were checked againsta pressure gauge prdviously calibrated. An air -12- pressure from 0 to 240 pounds was used, taJcing in-tervals of 10 pounds up and dovm. The results wereplotted egoinst the pressure g
. Influence of valve setting on efficiency and capacity of a 25 horse power International Harvester Company gasoline engine. loaded and balanced the error wasneglegible. The cooling water tanks, having been cal-ibrated a short time previous, were not re-calibrated. The thermometers were calibrated before andafter each run, showing no appreciable ST)rinp;s. The indicator springs were checked againsta pressure gauge prdviously calibrated. An air -12- pressure from 0 to 240 pounds was used, taJcing in-tervals of 10 pounds up and dovm. The results wereplotted egoinst the pressure gauge and the errorswere small; the error at the lower pressures neut-ralising those of the greater The cams are keyed to the cam shaft, andto prevent side motion set screvrs were used. Without renoving the keys there is only one adjustment,that is to make the valve rod longer or shorter,varying the cleerance. By lengthening the reach rod,the clearance is decreased,causing an earlier openingand Inter closing. By shortening the rod the clearanceis increased, resulting in a later opening and closing. .-13-influenceofvalve00menk. 46
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