1932-05-21 — Page 9

THE

HONGKONG

THE AUTOMOBILE ENGINE.

What Determines the Correct Oil for Lubrication.

The correct, lubricant for an designer, whose chief work in the automobile engine is not to be dealgning and constructing of an and saleable dotermined by the layman. Neither, melent, serviceable indeed, is it the problem of the piece of transportation equipment. average automotive ongincor or The lubrication of automobila

2.

FOUR NEW

EIGHTS

-AND A BIG SIX

The New Nash Cars Are HERE!

OME of the twenty-seven radically Now Nash cars recently announced in America have just arrived in the Colony.

These cars. now being widely discussed as representative of the most advanced automotive engineering, bring to motoring, new principles of basic design, hitherto unknown to any cars in the Nash field.

Visit our showrooms to-day. for д careful inspection of their points of superiority. obligation is incurred by your visit.

No

THE ORIENTAL MOTOR CAR COMPANY.

303-9, Hennessy Road.

Telephone 20406.

NASH

TELEGRAPH.

MOTORING SUPPLEMENT.

SATURDAY, MAY 21,、1932.

engines is'n science in itself, and level of the oil in these troughs Carbon accumulation is another the time in approaching when large is maintained by an overflow, and factor of extremo Importance automobila manufacturers will it is the action of the connecting which must be taken into consi- have a staff of lubrication experts rod dippers splashing through the deration. The sensitiveness of an whose duty it will be not only to lubricant that distributes the cor- assist in the design of lubricating rect amount of ofl through the in-engine to the accumulation of car Bystems but also to make intelll-alde of the engine. A third system bon deposits is controlled by many recommendations as to the le a combination of force feed and factors of design, such as Jubricants which should be used. splash methods of oiling, in which operating temperature, piston seal the operation is exactly the same liable to become an "oll pumper"), (whether or not the engine is us in the splash circulating system the shape of the combustion cham except that the main crank shaft

Basic Factors of Correct Lubrication

the

carbon

Cumulative Knowledge of Lubrication Experts

bearings are lubricated under pres- ber, which controls to a very large The correct ell for an automobile sure by oil pipes connecting with degree the sensitiveness of the engine is determined by

the pump. Another very common to detonation or knocking, analysis of four basic factors,

type of lubricating system is the as it is familiarly called, the namely:-hent, oll distribution.force feed method in which the material from which

the pisono piston seal and carbon formation.

crank shaft is drilled through its are made and the heat conductivity The heat factor includes a con- entire length and the oil forced of that material, as well as a num- alderation of everything having by pressure through the drilled ber of other factors which have any effect whatever upon the op- holes to the connecting rod lower 4 direct bearing upori urating temperature of the engine, ond bearings as well na to the main formation.. auch an the class of service for bearings. In this system there is which the unit JA to be no splash at all, but the oil leaking used, the Aito

the from the rapidly rovolving bear- engine, the type and Joeninga is sprayed to the working tion of the valves, the ratio of com- parts of the engine, The pression, engine speed, cooling method is known as the full force system employed (whether thermo- feed and is the name as the fourth syphon or pump circulation), and aystem except that the lubricant if the latter, what type of water is also carried by the connecting pump is used, whether or not the rods up to the gudgeon or piston temperature of the water is pins by pressure. thermostatically controlled, and many other things, including the effect of crank case ventilation.

of

Of course it is well known that

System Studied to Ensure Correct Quantitles

fifth

to

In reviewing the foregoing it; will be obvious that the question of oil selection is not one for a layman or the average garage re- pair man or necessarily the chief designer of the automobile settle. It is a problem which re- quires the cumulative knowledge of experts in both the engineering and designing felds, and in the field of lubrication. It is for this olla thin out in the presence of In selecting the correct lubricant reason that the great majority of heat-some more than others and for any engine, the exact type of automobile manufacturers rely up it is therefore essential that and system employed must be studied on the advico of experts in the uil should be selected whose heat so that the oil will surely be dis- refining of lubricating ofla for the resistance qualities are such that tributed in correct quantities to selution of their lubrication pro- one automobile it will satisfactorily lubricate the ill surfaces of the engine to be blems, and no

Some manufacturer could economically engine in which it is used under Protected against friction. all the temperature conditions ils atomize much more rapidly afford to maintain such engineer-

than others under the action ofine acrylee. imposed upon it.

splashing caused by connecting Furthermore, nothing has been rod dippers. Some are rapidly enaid about the behaviour and distributed through certain types peculiarities of different types of of force feed systems while others oils. But there is far more to this are not, and we must always bear subject than the layman might be in mind the location of the oil cir- inclined to believe. Sometimes culating purip; that is, whether the selection of crudes alone is it is exposed to the cold air or not, emphasised na being most impor. whether it is in the sump below tant. But it is a fact that refining the oil level or above the off level, processes have even more bearing and If the latter, how far above, upon the quality of a lubricant. the length, diameter and placing it is perfectly possibile to-make of the oil suction lines and many both good and inferior oils from other details that control to a very high grade crudes, regardless of ed by a pump through troughs fine degree the particular type of their base. The behaviour of dif Junder the connecting rods. The oil for that engine,

ferent oils is auch that one is best aulted to certain types of engines under certain conditions of service while another may be entirely to be preferred for another type of engine and another class of aer- vice. Quite often blends of olis made from different types crudes blended in certain specified proportions are most satisfactory. But again, this is not a point to be settled by anyone not having a thorough knowledge of the behavi- our of this class of lubricants.

A very important factor in the selection of a lubricant is that of foil distribution. There are five types of oil circulating systems. The Brat is known as the splash ur ali loss system, in which the oil in the crank case is kept at a con- stant level by a feed which is de- signed to replenish the oil at the Rame rate that it is consumed. Then there is a splash circulation system wherein the oil is carried into the crank ense and is circulat-

32

Betterments...

The Great Values of '32

SINGLE hour in the showrooms and behind the

A wheel will convince you, beyond question, that

Studebaker is today providing the most motor car for the money in the four great. Studebaker price fields,

The 32 startling betterments of the Triumphant New Studebakers-including 1932 Free Wheeling plus Syn- chronized Shifting, Automatic Starting and Safety Plate Glass all around without extra charge--reach down into the very fundamentals of motor car engineering and de- sign. They mean finer travel. They mean your Stude- baker will last longer, will go further with less main- tenance cost, will be surprisingly easier to handle, and decidedly more comfortable and safe to ride in and to drive.

When you buy a Triumphant New Studebaker, you get more than a 1932 model-you get 1932 value in every sense of the word, Drive a Studebaker and scel

HONGKONG HOTEL Garage

THE HONGKONG & SHANGHAI HOTELS, LTD.

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Tel. 22285,

The 1932 WILLYS-OVERLAND

1932 is the 25th anniversary of the Willys- Overland Company. During this period ap proximately 2,500,000 cars and trucks have been sold throughout the world.

The company now announces the Silver Streak Motor,the best designed, most reliable motor in the low priced field.

The Silver Streak Motor,with four bear- ing counter-balanced crankshaft, is mounted on a car chassis replete with advantages, 113-inch wheelbase, 58-inch tread, double drop frame, two-way hydraulic shock ab- sorbers, etc. All closed bodies are weather proofed and have improved quality of upholstery-form-fitting seats-movable driver's seat with adjustable back. Predeces- sors of this improved motor have won num- erous speed and economy records.

Ask us for specifications and demonstration of the car with the Silver Streak Moser

Agents:

GILMAN & COMPANY, LTD.

4A, Des Voeux Road: Central.

Telephone 28011.

Garage and Service Station: "DURO” MOTOR CO., LTD.

192, Nathon Road, Kewloon, Telephone 557226,

OUR SILVER ANNIVERSARY'• •• YOUR GOLDEN OPPORTUNITY