Rover Combustion Chamber
Page 46
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AN oil engine combustion head, aimed at eliminating diesel knock and reducing the maximum cylinder pressure is shown in patent No. 901,981. It does this by breaking up the smooth swirl of the air charge into a number Of surface
eddies. (The Rover Co. Ltd., Meteor Works, Solihull, Birmingham.) The drawing shows a pre-combustion chamber plug or insert according to the invention. It is basically of Comet Mark V form, but is modified in a manner such as to disturb the smooth air flow around its circumference.
The modifications comprise a number of conical projections (1) having rounded tops. The cone angle is 90 degrees and the height of the projections 0.062 in. They cover an arc of approximately 115 degrees and all the cones point towards the centre of the chamber.
The effect is said to be due to the small eddies ensuring intimate mixture of the air and fuel. The patent illustrates many possible variations on the same theme. There are two more patents on the same subject, numbered 901,982 and 901,983.
Better Bearings for Auxiliaries
ATENT No. 898,877 comes from • Ford Motor -Co. Ltd., 88 Regent Street, London, W.1, and shows an improved bearing for dynamos and other auxiliaries. The bearing comprises a porous material that will retain oil plus a simple circulating system for the lubricant.
Self-loading Lorry
PATENT No. 899,495 describes a selfloading lorry or " autocrane " as it is called. The chief feature is that the crane is arranged to occupy the minimum possible space, lying close to the back of the cab when not in use. (Steinbock G.m.b.H., Moosburg/Oberbayen, Germany.)