. Automotive industries . ar and the dynamometer adjusted to deliver 55hp. continuously until breakage of some axle part occurs,thus similating the most severe condition possible inactual service with the Class B truck. Tests of Lubricants Tests of lubricants which have been proceeding formany months have been much handicapped by lack ofsufficient personnel, but these tests are going forward asrapidly as possible under the conditions prevailing. Theprogram of lubricant tests includes tests of trade oils,standardization of Waters carbonization test, physicalproperties of lubricating oil when di
. Automotive industries . ar and the dynamometer adjusted to deliver 55hp. continuously until breakage of some axle part occurs,thus similating the most severe condition possible inactual service with the Class B truck. Tests of Lubricants Tests of lubricants which have been proceeding formany months have been much handicapped by lack ofsufficient personnel, but these tests are going forward asrapidly as possible under the conditions prevailing. Theprogram of lubricant tests includes tests of trade oils,standardization of Waters carbonization test, physicalproperties of lubricating oil when diluted with enginefuel, investigation of tests for greases, investigation ofbearing friction, fractionation of finished hydro-carbonlubricants to find original constituents of blended oil,effects of temperature on oil film adhering to a hot plate,engine tests of hydro-carbon oils and absorption of gaso-line vapors in hydro-carbon oils. Among the items which it has proved possible to givemost attention to are the following:. •Set Automotive Inoustriks for Juno 18 RECEIVER CONDENSER Vacuum still for fractionation of lubricating oils 752 AUTOMOTIVE INDUSTRIESTHE AUTOMOBILE April 1921 The apparatus developed for the purpose of stand-ardizing the Waters carbonization test is shown inthe accompanying cut. It consists of a double com-partment cylindrical air bath, the walls of which aremade of sheet iron with heat insulating material betweenthem. This apparatus was built around a hot plate hav-ing a low heat capacity in order that changes in the tem-perature of the heating element will be quickly felt in theair bath. Directly above the heating coil is located thebulb of an adjustable mercury thermostat of special de-sign, which serves to keep the temperature of the bath at250 deg. C. and constant to within 1-> deg. C. The thermostat is not designed to carry the total heat-ing current, but a commercial type relay is interposedin the circuit to interrupt the current passing to the h
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
