Paper 18: The Use of Fuel Additives for Running-in Diesel Engines

Abstract

There is still no universally accepted method of obtaining adequate running-in of piston engines. Measures adopted to reduce wear of the piston rings and cylinder in service, e.g. the use of chromium-plated rings and heavy duty lubricating oils, inevitably prolong the initial running-in, and some means must be employed to induce wear during this critical period. One of the most successful ways of doing this in a controlled fashion in diesel engines has been found to be the use of an additive which is soluble in the fuel, and which when burnt in the combustion chamber produces an abrasive material which wears the rings and the cylinder. No adverse side effects have been observed from the use of this additive, and various examples are quoted of its successful application, both in engines operated by the manufacturer on the bench, and in new and reconditioned engines in vehicles operating on the road.