1930-06-28 — Page 12

JOHNSON SEA- HORSES

America's Fastest Outboards

are also the easiest to start and the quietest to run

Nine outstanding features of Johnson Se Horses are caused more people to buy them, than all other outboard motors combined;

Release Charger gives automobilestartkɔgessa, Alternate Firing twin cylinder desiga) gives vi brasivaless power-low, #uureisid - Lader Air Exbanstends avise and fenica, zlomatic Cu-Val-Preure-Van Coolidgytem -Rotary Val-givcopersilon efficiencies and Brekter speed. Full Fivet Steering givet pros peller revemaaction without stopping motor/.

Elabt Sca-Horse models range from 2 to 32 borse power, from $125,to $325. Electric starter with auxiliasyrope-starteraliooniosal, on 3 largest models, #315 to $395. All prices 1.o.b. factory, Easy payments.

Ask for demonstration or catalog.

SOLD & SERVICED BY

THE HONGKONG TELEGRAPH, MOTORING SUPPLEMENT, SATURDAY, JUNE 28, 1930.

Four-cylinder

Sex Horse "323

"Holder of the Ofpl. American Speed Record at 49.34 m. p. h. '

ALEX. ROSS & Co., (China) Ltd.

HONGKONG & CHÍNA.

PETROL & OIL

May make your car go, but does your car make petrol and oil go a long way? The Jowett does Owners Opinious will give you some details which will surprise.

you.

You can't run cars for nothing, but of all cars the Jowett gets nearest this desirable state.

You will always find Jowelts to the fore when the advantage of the car owner is to be gained.

For instance, we fit a stainless steel ra- diator, being the first firm to do so as standard.

When you buy a Jowett, you don't have. to pay for your experience. Our 24 years. manufacture has seen to that.

JOWETT CARS, Ltd., IDLE, BRADFORD.

IDEAL MOTOR CAR CO.

Corner Lockhart and Marshall Roads. New Reclamation.

Tel 23714.

LOCAL AGENTS.

DIESEL-ENGINED MOTORCAR.

Practical Refinement of Motor Necessary.

[By William F. Sturm.]

for

of

The entire fuel system may thus contemplation of its use without thus cracking and gasifying the refinements in the passenger car." hot charge of wet fuel. When the be divided into three divisions, the first of which covers the measur piston is at approximately top of the fuel charge and de

Automotive Adaptability. The matter of automotive adap- centre, the plunger is suddenly livering it to the injectors, The tation is only one of enginerring depressed this driving the rich second covers, the gasifying of the the engine to the problem at hand. gaseous charge of fuel out into charge in the injectors aud injec When this is done, Mr. Cummins the hat compressed air charge in tion into the combustion chams bers. The third division covers a says that lustead of 28 pounds per the main cylinder, where ignition means of obtaining the necessary horsepower the weight can be re-

and combustion turbulence or mixing of the com

bustion charge with the air in the | cylinders,

duced without injuring the life takes place":

of the engine and its performance follows.

so that the automotive engine previous practice in Diesels bas Because of this advanced pre-

The engine was started with a which, 12-volt motor-generator

American.

MOTOR CAR INSURANCE

PROTECT

YOUR CAR

AND

YOUR LIABILITY TO THE PUBLIC BY A POLICY WITH

CHINA UNDERWRITERS, LTD.

waight will not exceed 10 pounds per horsepower. This compares called for a plonger or valve for paration of fuel and the method favourably with the average auto-cach cylinder, and it has been of mensuring, the Cummins engine:

found impossible to keep these will handle any kind of fuel from Economy of Operation.

mobile engine of to-day. One of the most interesting

The Diesel develops its power at accurately adjusted to measure crankcase alop to gasoline, engineering demonstrations

No extensive experiments were

extreme pressures under is to adapt this engine to truck recent years, and one fraught with portent for the automotive indus-made with the car prior to its long low engine speeds, as evidenced by the proper amount of fuel under The plan of the manufacturers In the use first, by experiments under try, was a test trip made by a trip; in fact, the finishing touches the engine used, in the test trip. the Diesel-engined automobile from were placed on the car at 3.30 in It was equipped with a governor which the fuet is fed. Columbus, Indiana, to Indiana-the morning and it left an hour which took the engine away from Cummins engine, one plunger actual truck working conditions. Dolls, New York, Detroit, and back and five minutes later for New the driver at 1,300 revolutions a measures and delivers the fuel to Bus application will come next, the York, making the trip in 25 hours minute, yet the car ran perfectly all injectors, whether one or six with the passenger car last. This at a speed of 55 miles an hour. at a pressure of only 50 pounds. means that the engine should be to Columbus-which,

on driving time. short benefit of those

On the trip from Indianapolis to Further, one might expect the A distributor distributes this perfected for trucks within a year geography, is just 40 miles south

New York 792 miles--the fuel motor to vibrate considerably at measured charge from the com- or 18 months and that if the pas of the Indiana state capital, -The trip of 2.780 miles was oil consumption was 30 gallons low speeds, yet in the hundreds of mon plunger to the proper. injec-senger car adaption comes, It will important in that it marked the and the cost was $1.38. One must miles, the writer rode, he found tor, thus aliminating any possi- be a matter of four or five years first time in America that a Diesel be honest, however, and say that its vibration no worse than anybility of unequal distribution of before it is perfected: Scientific engine ever had been used to this low cost was due to the fact four cylinder engine of its size. fuel.. drive a regular automobile. The that most of this oil was pur- As the speed increased and 15 trip proved conclusively that the chased at wholesale at the Cum-to 20 miles was reached, the Diesel engine is flexible enough mins factory for 4 cents a gallon. engine smoothed out and ran ng for automotive power plants and But even had the top retail price smoothly and as quietly as any it opened the eyes of engineers to of 10 cents a gallon been paid for gasoline engine. Ita acceleration the possibilities of an engine that the 30 gallons the cost would have at 20 to 50 miles an hour was sur- not only would perform satisfac been only three dollars, as against prising, especially in view of the torily in an automobile chassis 99 gallons of gasoline at a cost 2% to 1 gear which was used în but would do so on fuel oil which of $24.75 for the same chassis with the car, instead of the 4.69 to 1 may be purchased at from eight a gasoline engine consuming a used with the original eight- to ten cents retall and which will gallon of gas every eight miles. cylinder engine. drive a car at a speed of 55 miles On the 2,780-mile trip, 102 gallons an hour over all kinds of roads, of fuel were used. The cost of

this was $7.72. as against a fuel after starting the engine, becomes hills, and detours.

battery. By a turn of a lever on The engine used was of four cost of 86 dollars at 25 cents aa generator to recharge the cylinders, with a 4-inch bore gallon for a gasoline engine.

The actual average per gallon, the dash, the compression in the and a six-inch strake, developing- approximately 50 horsepower with the car running wide open cylinders was released while the The test trip engine was not one most of the time and no attempt starter turned the engine over. specially built for automobile use, made at fuel economy, was 27.2 After 10 to 12 revolutions, of the but one taken from regular pro- miles, which includes distances motor to get up, speed, the com duction for portable and marine between cities and mileage used pression-release lever was turned use. The chassis was from a lwithin city limits in demonstrat to re-establish compression, and The full cost per the momentum engendered start- 1925 model of a well-known auto- Jing the car.

easily as the normal car starts. mobile, and the change was made mile was less than three mills, yet ed the engine instantly and as simply by removing the automothe car weighed 6,000 pounds,

"We made the trip merely to There are no carbureter and car- buration problems on a Dléşel. If bile engine and replacing it with

that the Diesel the Diesel. The heavy base of demonstrate the Diesel was removed and fit engine, as it is made to-day for the oil in the cylinder walls is tings necessary to anchor it to murine and portable use, can be loose enough to permit the motor Whether the atmosphere the frame members of the auto- used successfully in an automo- to turn over, that is all that fa mobile chassis were added. It was bile," Mr. Cummins said: "I had asked. not necessary to change the hood listened so long to the statements is 40 degrees above zero or 40 to a Diesel. The car was left out or radiator alignment, nor to dis- that a Diesel is not Rexible that degrees below makes no difference

demonstrate the turb the rest of the chassis in any I decided to

falsity of the statement, at least on a parking lot at Pittsburgh for So well did the car perform, so far as our product is concerned. two nights at zero weather and from the standpoint of flexibility. The engine we used was not an it responded instantly after stand- Buting 13 hours. On the compres that no difference was discernible automobile engine at all,

especiailysion stroke the air charge becomes between it and the standard type even without being of automobile. Mr. C. L. Cum-adapted to automobile use, it met heated to approximately 1,000 mins, president of the Cummins the occasion surprisingly well. degrees, Fahrenheit, and away she Engine Company, of Columbus, We are certain that development goes. Indiana, drove the car into New Jean successfully meet the service York at the busiest hour of the conditions met with in trucks, day, between 4 and 5 pm, and buses," tractors, and similar ser It can be adapted to us parked it at the Roosevelt Hotel. Ivices. In all the larger cities he visited senger car use--particularly for --New York, Philadelphia, Balti export-as easily as to truck and more. Washington, Pittsburch, buses.

"However, the refinement of the and Detroit-he asked no odds of anyone in traffic. The greatest motor, the path to passenger car tribute to the engine performance juse, lies through the truck field, is that until one came close enough; simply because the matter engine. to read the small sign. "Diesel weight is not so vital in the trick Test Car-Cummins Engine Com- und bus field as in the passenger- pany," on the tyre cover, he was car field. I would like to muke not aware that it was not a con- this plain that the marine Diesel ventional automobile.

is entirely too heavy for even the

way.

509 FIAT 520

'The BIGGEST THING IN SMALL CARS"

Is the title of very clever article written in the Illustrated Sporting and Dramatic News by Mr. H. Massac Buist, the famous English! motoring critic.

Without its Equal, for ECONOMY, COMFORT, RELIABILITY and

PRICE.

At the present high cost of, Oils, Gasoline, and Tyras donot fail to call for a demonstration, wheu intending to buy a Motorcar, it will be in your own interest.

GOEKE Co. 4th floor China Building, Tel. 22221.

Showroom —F I AT-GARGE, 67, Des Voeux Road,

Tel. 24821.

Difference in Firing..

It may interest the lay public to know that, with the exception of the firing, by heat induced by fuel into the explosion chamber compression, and injection of the thus heated, the four cycles or. strokes are exactly the same as The engine which was in the standard type automobile used has neither spark plugs nor In place of any other type of spark ignition and no carbureter. plugs, it depends on heat generat- charge in the cylinder to ignite ed by compression of the air the fuel. In the gasoline.engine the charge consists of gasoline vapor, and air mixed; in the Cummins engine pure air only. is On drawn into the cylinders. the compression stroke this air is compressed to 500 pounds. per square inch, which generates a heat

1,000 of approximately

While the degrees, Fahrenheit.

air is at its highest compression and. temperature, the fuel (in a gaseous state) is injected into the explosion chamber by suitable mechanism On contact with the heated air it ignites and burns progressively, instead of explo sively, as in the gasoline engine, and creates the power, stroke of the engine..

Mr. Cummins, says his engine differs from, the conventional type, of Diesel because, in the latter the solid fuel is injected at pressures 10,000 varying from 3,000 to pounds, and as considerable time, to comparatively, is required gusify the cold, wet fuel, it is in- jected considerably ahead of the Stop centre stroke of the piston, which results in heavy explosive pressures in the cylinder, making extremely heavy moving parts withstand the Imandatory to -stráin.

Method of Pre-heating.

..

In this engine, the fuel is pre heated by circulating it around through an annular space between two members of the injection plunger chamber Fuel stands in this annular space through, thres cycles of the engine, namely, the compression stroke, the working stroke, and the exhaust stroke. At the beginning, of the suction stroke, this pre-heated- charge is forced, out of the annular space Into a small conical chambery where it stands over the small dis tributing nozzles which lead out into the combustion chamber AT plunger operating in this chamber is slowly retracted at the time the fuel is delivered into the chamber, which prevents any of the fuel being forced out into the main

Phone: 28121.

Hongkong Band Building.

THE NEW 869

MARMON

FOR THE MANY BUYERS WHO ARE TURNING FROM SIXES TO EIGHTS

TYPICAL Maxınon Good Looks and Im

Tressive

pressive Size (15 feet overall) Straight- Eight Marmon Engine Gasoline Pump→→→ Air Cleaner-Oil Purifier Down-Draft Manifold - Latest Type Mechanical Four- Wheel Brakes Enclosed Cables Instead of Brake Rods Four Two-Way Hydraulic Shock Absorbers Rubber Knuckles Instead of Metal Spring Shackles Radiator Shut- New Crank-Type Windshield Control ters New -Two Cowl Ventilators-Single Button Control for Starter, Lights and Horn-Ad- justable Seat, Steering Column, Pedals Ash Receivers in All Four Wainscot Panels -Interior Sunshade Visor A New Inter pretation of Performance, Looks and Lux ury in its Price Field and Try the 869 Today.

Marmon Also Builds the New Bi the New 879, and the l

The Industry's •

Builder of Stra

Arrange for an early Demonstration

Sole Distributors

combustion chamber: On the THE ORIENTAL MOTOR CAR Co.

compression stroke, the final pre paration of the fuel is completed The highly compressed air charge from the main cylinder is forced through the nozzles, up through this pool of previously heated fuel,

3-7, Hennessy Hoad.

Tel 2040