. Automotive industries . ses having aknown boiling point range. The vacuum distillation testalso determines the loss of volatile constituents of motoroils during use in an engine by comparing the volatilityof the oil before and after use. The difference in volume ofthe distillates up to 300 deg. C. is taken as a measure of theloss due to evaporation of the light constituents of the oilduring exposure to the high temperatures of the test also serves to indicate the relative consumptionto be expected with various oils. The distillation of finished lubricating oils under vacuumas des
. Automotive industries . ses having aknown boiling point range. The vacuum distillation testalso determines the loss of volatile constituents of motoroils during use in an engine by comparing the volatilityof the oil before and after use. The difference in volume ofthe distillates up to 300 deg. C. is taken as a measure of theloss due to evaporation of the light constituents of the oilduring exposure to the high temperatures of the test also serves to indicate the relative consumptionto be expected with various oils. The distillation of finished lubricating oils under vacuumas described meets all the requirements of a successfulroutine method for the examination of lubricating oilsdetermining of what groups of hydrocarbons, highly vola-tile or less volatile, they consist, and permits separation ofthese portions into graduated fractions. It also showsthe quantity and quality of the component light, inter-mediate and heavy oils used in blending. April 7, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 753. 800 bOO z ONE PLUG TWO PLUGS Q. m 400 In iTONATI ON 1 » z a. • a 200 y/y2i / IGNITION IGNITION EFFECT OF SPARK ADVANCE ANDNUMBER OF PLUGS ON PRESSURESIN CYLINDER OF AIRPLANE ENGINE —5 IN BORE . 7 IN. STROKE1IOO
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
