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RUNNING AN ENGINE ON HEAVY OIL.

7th August 1923, Page 9
7th August 1923
Page 9
Page 9, 7th August 1923 — RUNNING AN ENGINE ON HEAVY OIL.
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An Interesting Device for Providing Ignition when Running on Gas Oil.

1 T IS a well-known fact that gas oil is a by-product of considerably • less value than petrol, and it has also been long recognized that if suitable means for igniting the charge could be found, a cheap fuel that might be used in any ordinary engine would be available. An ingenious device, known as the Amorceur Maroger, having this object in view, has been produced in Prance, and has alreadybeen fitted to •a number of

vehiales, mostly commercial lorries, with great success. • It consists of a series of auxiliary chambers (or " Annerceure "), one for each cylinder, and screwed into the head in place of the sParking plug. These are joined together by suitable tubing and are fed with petrol from a small auxiliary carburetter etepplied by a supplementary tank. The sparking plugs are placed in these auxiliary chambers, where • they fire the charge just where the mixture is the richest,. and it is the ignition of this rich mixture which causes the complete combustion of the carburetted gas oil and air which are supplied to the cylinders by the ordinary carburetter.

Each Amorceur takes the form of a small auxiliary chamber with radiating fins, containing a. small mushroom valve. On the induction stroke a charge of Petrol and air is drawn from the small auxiliary carburetter through the valve and is fired by the sparking plug in the ordinary way. At the same time, the cylinder has drawn in a supply of carburetted gas oil, with which the main tank is filled, and thiS is then fired by the initial flame in the Amorneur..

Beyond the fitting of this device no alteration to the engine is necessary. The ordinary petrol carburetter is employed for the heavy. fuel oil, but with

somewhat larger jets. The jet setting is determined by the mixture burning without visible smoke, and, when cor

red, such Complete combustion is obtained that there is no sooting-up of the plugs. or undue deposit of carbon. The amount of petrol used in the Amorceurs is very small, and the saving in cost of running, owing to the low price of gas oil, is about 50 per cent. It is possible that heavy fuel oil could be ignited in the same way, or by slightly modifying the apparatus.

We witnessed some tests in Paris recently with an old four-cylinder enginein a three-ton lorry, to which the

Amarceurs had just been fitted. The main tank was drained of petrel and filled with gas oil.; .there was no difficulty in starting up from cold and the engine continued to run in a way not distinguishable from • its ordinary pinning on petrol.

This device is handled by Aniorceurs Maroger, 73, Rue Laugier, Paris, which is allied with the Societe Anoeyrne Kirby Smith.

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Organisations: US Federal Reserve
Locations: Paris

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