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Rolls-Royce Oil Engines for Heavy Duty

13th July 1951, Page 43
13th July 1951
Page 43
Page 43, 13th July 1951 — Rolls-Royce Oil Engines for Heavy Duty
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LAST week the Oil Engine Division of Rolls-Royce, Ltd., came into the open by showing in London an example of its new range of oil engines for heavy-duty work. This was the Mark 2A, but as Lord Hives, C.H., M.B.E., chairman and joint managing director of the company, said, progress had already been made on a Mark 4 unit.

He added that it was well known that Britain had been largely dependent upon the U.S.A. for most of its earthmoving equipment, but several years ago the decision was taken by his company to design, market and develop an engine suitable for this class of machine.

Intensive development was started with special single-cylindered units, and already about 20,000 engine-hours had been run on the test bed and many hundreds in service. A number of the units had also been mounted in Vickers V.R.180 crawler tractors, performing hard work on various sites, whilst one of these models was operating in .Tripolitania under maximum temperature conditions. It was hoped that early next year the flow production of engines would have started. The first batch would go to Vickers-Armstrongs for the tractor mentioned.

There are six-cylindered and fourcylindered models and one of the larger is supercharged. The range is intended to cover all forms of earth-moving equipment and oil-field equipment within the power of the range. We were informed, however, that models suitable for commercial vehicles are in course of development.

A brief specification of the C.6. S.F.L.

unit, which was that shown, is as follows:—Four-stroke, direct-injection, overhead-valve, supercharged; bore 51 ins., stroke 6 ins.; capacity, 742.64 cubic ins. (12.17 litres); 190 b.h.p. at the governed speed of 1,800 r.p.m.; torque, 600 lb.-ft.; main bearings, copperlead-indium; crankshaft damper uses viscous silicone; lubrication, full pressure, dry sump.

A factory has been specially built at Derby for the production of these new units,

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Locations: Derby, London

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