PETROL FROM COAL, were
New Fuel Tested.
THE HONGKONG TELEGRAPH.
COTURIFT SUPPLEMENT.
giving out their fuel In view of the fact that. It is potrawhat is called the "Gyro revolutions. No difference be estimated there is never more than procesa” of breaking up je utilized. tween the new fuel and ordinary, a month's reserve of fuel for in- The how fuel has, it is claimed, petrol could be detected, savo internal combustion onginco inj been used with satisfactory rosults the smell. The fumes given off Britain, and that a great war in motor-cars. The magnitude of by the fuel derived from coal were might quickly put us in a position the business affected will be seen IMPORTANT RESULTS. very objectionable: It was stated, of feopardy, the value of a fuel from the following table of importa
however, that this can be remedied; which could be prodačed at home in 1927: Petrol which had been recovered The engines employed wero a is obvious. from coal in the process of manu- "Cirrus" of 85 h.p. and an Arm facturing amokclean fuel was tried strong Siddeley Jaguar" of 400 in two aeroplane engines at Stagh.p. Both wore started up from lane Aerodrome, writes the Daily cold,
Correspon- Telegraph Aviation
If the claims made in respect of It was stated that the new fuel dent. The engines were started the new fuel prove Justified, It is would not cost more than ordinary and run, but flights wore impca difficult to exaggerate is impor- patrol. It is made from "slack," Bible owing to thick fog.
tance. Perhaps the most important and a ton of slack yields of 14cwt. As a matter of fact, the test of point is that It would make this of conlite, a smokeles fuel, 10) actual flight was unnecessary, for country independent of imported gallons of petrol, and 10 gallons of it was ovident that the engines fuel for motor-cars and aeroplanes."Tücf oil. In the manufacure of the
At least of equal importance would be the stimulus to homo industry and the reactions upon, unemployment.
£9,027,347. 6,194,286
33,913 10,200,748
Crado oil Fuel oll.. Other sorts Motor spirit Other than motor
spirit
210,796 Gas oil.
1,690,742 Petroleum lamp, oil 4,614,868 Lubricating oil 4,705,549 Lord Thompson and many: perts were present at the demon- stration,"
Tune Up Your Cars
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Stations
are organised to give
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CARS COMPLETELYHOVERHAULED AND TUNED TO
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Everybody says it's
it's the Outstanding Chevrolet of Chevrolet History
Spectacular as Chevralat's achievements have been in the past- notable as its engineering triumphs have proved themselven to be this · remarkable Now Chovrolet dwarfa ovory previous conception of Chevrolet accomplishment.
And not only does it introduce into the low-price field an entirely now measure of performance, comfort, beauty and style, but it is sold at prices so amazingly low as to alter avory previous conception of motor car value.
See this new car-rido in it--and you will
be just as onthusiastic in your praise of it.
THE HONGKONG HOTEL GARAGE.
Tourer.. Roadster
READY FOR DELIVERY.
.BK.$1,580,00 Sedan
****** $1,960,00 $1,580.00 14 ton. Truck Chassis $1,510,00 The new Cherrelat Phiston, The top can be saully and' quietly lowered.
CHEVROLET.
SATURDAY, JUNE 15, 1929.
FEATURES OF LATEST PRODUCTS.
High Compression in New Engines.
Automotively speaking, 1920 will be used under comparatively high be a year of bigger and better compression. Ono method is to values for the automobile buyer treat the gasoline with tetratethyl and, from all signs, a bigger and lend so that the small lead mole- better your for the automobile culcs, serving as aort of auxiliary manufacturers. An
and outstanding spark plugs, quickly absorb trend in the 1929 cars is the almost transmit the heat of the explosion general adoption of higher com-to all parts of the combustion ex-pression engines. This feature has chamber, so that a smooth, rapid resulted in a marked lacrease in expansion of the gases in. the the power of the 1929 automobile chamber is obtained. Detonation or without adding to the eize and explosion is eliminated to a great weight of the engine or to its cost extent and combustion is more of operation.
nearly complote.
*
High compression is a term used Carburation has been greatly im to indicate the increased pressure proved to provide greater atomiza. | under which, the gases in the com- tion of the fuel mixture and almost bustion chamber are compressed all of the carburettors in 1020 cará before they are ignited by tho are thermostatically controlled so spark. It is obtained by redesign that the volume and temperature of Ing. and making smaller the com- the fuel charges are automatically bustion chamber in the cylinder held to more nearly uniform pro- hoad so that a quantity of fuel portions. Manifolding has been mixture equal to that formerly Improved to ingura a more even uard is comprassed inte
distribution of the fuel mixture to much smaller space
bofare each cylinder of the engine: Ignition. This sounds simple, Valve lifts in the majority of doesn't. It? But it la not 30 engines have been increased, which simple and unless the layman affords freer passage of the fuel understands the yeaf of search and mixture from the carburetter to the study, not to mention expenso, manifold and increases the amount that automobile manufacturers of mixture taken into the cylinder and fuel companies have devoted in during the down stroke of the obtaining this end, he cannot ap- piston. preciate the added value that is being offered to him in his 1929
car.
Other Improvements.
All these changes sound simplo, Explosion and Expansion. but they often call for a complete The effect of higher compression retooling of an automobile plant High compression ratios have in a gasoline engine is much the same in result as higher compres-Also left the manufacturer with h sion in an ordinary coil spring. problem of greater engine heat, For example, take a coil spring, with the solution lying in his compress it slightly between, the ability to improve his cooling sys- fingers and let it snap back to itatem, particularly around the com- normal position. The Impulse is bustion chambers. In this he hund comparatively alight. Compress it to exercise great care so that too again, under twice the pressure sufficient,cooling during normal exerted the first time, note the cor-operation would not result in bard responding Increase in the force of starting in cold weather. To the spring as it returns to normal.overcome this, many manufac Laymen may ask, "Why, if this turers in their 1929 cars have pro- increased compression makes for vided by-passes from the exhaust greater power,
automobile manifold so that the heat from the manufacturers turning to it at this exhaust of the first Day power strokes is shunted around the in- late date?"
arc
In the minds of many the theory take manifold and carburetter, of the operation of the Internal heating the fuel mixture and keep- combustion chgine is based on the ing it volatile until the engine has belief that the "explosion" in the warmed up to its normal operating combustion chamber supplies the hemperature.
¡
power impulse to the piston. This It can be seen from this that the is true to an extent, but the actual automobilo buyer for 1929 is get- "explosion" in the combustion ting, on the whole, a much mora chamber is tho thing
which poweful engine and car than ever cost is not automobile manufacturers had to before. The initial bvorcome before higher compros- greater and the actual operating sion in ongines could be made cost is much lena through the available as an everyday com- adoption of higher compression modity.
engines alone. Old-time fuels, under high com- Fuel strainera, oll purifiers and pression, when ignited, did "ex-nir cleaners have become almost plode.' This resulted in serious integral parts of to-day's engine. wear and tear on all parts of the These devices are not now, but in engine and running gear, as well the cars for 1920 they have bean as on the nerves of the operator. improved and perfected, to a point The desired increase in power was where they function much more not obtained because only a part of efficiently, protecting the interior the charge in the combustion cham- of the engine from foreign matter, ber was ignited.
grit and dirt, Crankcase ventila- tion has bean provided in almost all models and makes to prevent The ideal fuel was thut which the dilution of crankcase labri could be compressed under a much cants by gasses from the combas- Krenter pressure and, when ignited, tion chamber.
Without Detonation.
D
expand rapidly and smoothly with- There are many other improve. ORL detonation or explosion. This ments in body, chinasia and running problem in itself was not easy to wear design, which are being offer- solve and those who recall the 100 ed in the 1929 cars. When one victims of the famous "looney gas" considers that, at the end of a few years ago many form some year, the turn-in allowance is opinion of the chances chemists equal to between 40 per cent, and experimentera faced in trying and 50 per cent. discount on the to solve it.
original cast, it would neem that However, after som years of there it not another business in research, fuels have been developed the world to-day which offers the which are neither dangerous to the buyer.greater valuca than the user nor the engine and which enn automobile business,
CARS IN NEPAL.
'Lonely Motoring in Small State.
22-MILE AREA.
THE KNOCK PROBLEM.
New Word to Describe Fault.
"APPOTENIC."..
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THE HONGKONG. AUTOMOBILE
ASSOCIATION
A Fow Advantages:- 10% Off Motor Car Insurance
Free Legal Advics. Reliable Drivers Supplied Fran Mechanical Advice Asicciate Membership of its
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'O/o "Hongkong Telegraph'
FOR ALL CLASSES OF
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HEAD OFFICE Hongkong Bank Building,
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If there was a championship award for the world's most en- Engine (fuel) "knock," with its thusiastic motorist it would un-consequent power loss, is caused-- doubtedly go to some member of in scientific parlance by "an ac- the Royal Family of Nepal. Nopal tivating heat equilibrium conjoined is a little kingdom on the northern with molecular susceptibility!!! border of India, almost under the Such a devastating technical Bhadow of Mount Everest, and explanation for a motorista' pro- there are few places in the world blem is ample justification for the: harder to reach by automobile.
coining of the world "appotonic" which sums up for the motorist in A representative of the Royal| a simple definition the cause and. Family recently took delivery in solution of this irritating, power Calcutta of 4 Studebaker wasting fuel knock. An authority President Eight Limousine, had stated that "terminological Studebaker Tirector Berlino, and two Erskine Sixes. But the Royal also obscured the "knock' problem" generalities and abstractions have Family resides in Khatmandu,so appotenic comes to the rescue capital of Nepal. The new cars of the bewildered motorist and SOLE AGENTS had to be shipped by rafl from points to the cure for his, engine Calcutta to a city 38 miles, from trouble.
the, capital. From there they The new "appotonic" is deriyod were driven to within 18 miles of from the Latin, ad (ap), meaning Khatmandu. For, the final 18 miles of the trip however, the sessing increased power; said of a powerful and is defined as "pos. cars had to be transported by gas that, being atable to heat and aerial cables over valloye and high compression, will, therefore, mountains where there is no sign neither audibly пог aflently
of a road. Travellers are carried mock" in a high compression | over this 18 miles stretch in coplle.
chairs,
engine."
After having sumounted all these just 22 miles of road--which in difficulties to get their cars, the the total extent of the little klug- [Royal Family can operate them on dom's highway system,
The Republic
Motor Co.
of China.
(Buccessors A. LUNG & Co.
Auto Dept,).
80 32, Des Voeux Road.
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