Arizona republican., 1917-12-23

some efficient method of cheating the fuel would have to be universally used. Kerosene carbureters are already a practical development and it only needs sufficient demand to produce scores of these instruments efficient enough to meet all demands. Distillate is much used on the Pacific Coast, particularly by motor trucks. Crude oil is the ordinary fuel of engines of the Diesel type and possibly the future may hold some development along these lines for the automobile field.
 The great advantage of the fuels de- irving from coal, is the prodigious SUD- ply of that base, which is now in sight. Whereas the present known supply of crude oil at the present rate of con- sumption will be exhausted in less than twenty years, the coal supply is almost unlimited.
 Benzole at the present time in this country is prohibitively high in cost. This is a by-product of coal, resulting in the manufacture of analines. coke, etc When we have developed our dye making industry to the point that Ger manys was before the war, we shall have benzole in plenty, but to use up coal to make benzole alone, makes the cost of the latter prohibitive.
 In England, where every drop of gasoline that can be imported is needed to drive the machines of war and com merce, they are using with much sue cess coal gas as motor fuel. This is carried in ungainly canvas and rubber containers, which are not ornamental, to put it mildly. Recently there has appeared to new type of container talk i,,o of cho aad ders, carried on the running board. They hold an amount of gas equal to about two gallons of liquid gasoline This is a totally new development and | there is no question that with experi- ence the containers will be made more | slightly, in fact methods of compressing | the gas may be found so that it will make it just as easy to use as liquid | fuels.
 No carbureter is used in feeding, the coal gas to the engine. The inlet mani | fold is generally tapped for the gas l supply and the air is taken in through | the regular passages. A control is pro- vided that must be manipulated ac- cording to the needs of the engine and when the latter is stopped the gas must | be shut off. Provision is made to pre- vent baekfiring and ignition of the gas | is in the container Among the ad- vantages accruing from the use of coal gas. is the fact that there is no danger | of this fuel mixing with the lubricating oil as sometimes happens with gasoline 1 Also the coal gas leaves no watery de- posit and carbon deposits are much less, in fact this trouble is practically eliminated.
 The ordinary engine of today will burn coal gas without whimper and
 it only remains to develop satisfactory means of carrying it to have an alter
 nate fuel beyond reach of fluctuations
 of the crude oil supply.
 And there still remains alcohol
 which can be produced in almost limit
 less quantity from variety of sources
 wood, grain and vegetables. This fue
 has certain decided disadvantages
 among which is the rapidity witt
 which it evaporates. To use it change:
 would have to be made in our presen
 engines, compression would have to b,
 increased and other alterations made
 But, nevertheless, alcohol is a possible
 fuel that must be taken into considera.