. Automotive industries . of mercury respectively. The gasoline used was Targetbrand, made by the Western Oil Refining Co. The weightof a sample gallon was oz. and the heat value perpound was taken as 19,500 in the calculation of thethermal efficiencies. Comparative Tests Fig. 15 shows the engine characteristics at full load withthe to 1 compression ratio. The maximum brakemean effective pressure comes at 1000 , with a con-siderable reduction at 400 due to the delayed inlet-valve timing. The maximum fuel economy is lb. per hr. The mechanical effici
. Automotive industries . of mercury respectively. The gasoline used was Targetbrand, made by the Western Oil Refining Co. The weightof a sample gallon was oz. and the heat value perpound was taken as 19,500 in the calculation of thethermal efficiencies. Comparative Tests Fig. 15 shows the engine characteristics at full load withthe to 1 compression ratio. The maximum brakemean effective pressure comes at 1000 , with a con-siderable reduction at 400 due to the delayed inlet-valve timing. The maximum fuel economy is lb. per hr. The mechanical efficiency is very good a*t lowspeed but drops off rather fast as the speed increases. Thepeak of the power curve is at 2600 Fig. 16 shows the results of tests Nos. 2, 4A and 3, interms of miles per gallon for , and rear axle gearratios and to 1 compression ratio. It will be noticedthat a material increase in mileage is obtained as the en-gine load factor is increased by changing the Fig. 12 (below)—Vertical section of 2-iv. carbu-reter used in the tests Fig. M—Parts of engine used in lest. Of thetwo pistons nt top, the our nearer the centergives the to 1 compression ratio, while thatat the right (jives a 5 to 1 ratio and is of the con-stant clearance t>j\>e. Another view of the latteris seen at the bottom 168 AUTOMOTIVE INDUSTRIESTHE AUTOMOBILE January 27, 1921
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
