Show EED MORE 1 fROM fUEL Material Improvement In 1 Motors 1 Has Almost Reached Limit I I I INDIANAPOLIS DIA June 16 Im ImI Important Important Im Important I developments de In the n new newfield new field wl field of ot fuel chemistry ar ard arc fore fore- forecast forecast forecast cast by the projected plan of ot Carll Carl Carl G G Fisher president of oe o the Lbs Indian Indian- Motor 1 speed to lo Indian Indian-I reiso re the racing rules for the annual IndIanapolis mile mlle race so as tO place a premium upon fuel economy m my as well ell as upon engine I speed and power po er erThe The sensational aliona performance of the new cubic Inch engines In Inthis inthis Inthis this years year's ears ear's ears contest practically dup dun duplicatinG duplicating heating the best efforts of the larger engines of ot previous IoUS IoU'S years Is held to demonstrate that materIal Improvement In engine design et e ex excepting still further reduction In size Is od nb Ion longet gel possible TUDY FrEL Additional gains must come It ItI itis I is held from the scientific treat treat- treatment treatment treatment I ment of ot engine fuel calculated to I secure greater efficiency from th lh fuel I itself elt rather than from the mechanical agencies through II it Is con converted into Inlo po power er The limiting factor of Increased I fuel has been the une en combustion or of o thear the ar var various arI I ious Clements elements entering ent Into fuel Some explode too sud- sud sud-di sud d 0 nl ni gi giving ing rise to a a high pres pres- presure pres- pres pressure sure ure gas wave that results in the ph known as pinking or Others burn too ciol 10 h Iso 30 that they are only partially ceo ceo- con consumed CULL UEL ELEMENTS With the various luel so unified through some efficient agency as to insure tim nell well ell d harmonious combustion not would an Immediate Increase In mileage result but also the use or of higner compression engines n Ibl bi made possible bringing about still greater gains |