From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Oil reconditioner tests for 'Luber-Finer', 'A.C.', and 'Smith' units.
| Identifier | ExFiles\Box 135\3\ scan0251 | |
| Date | 10th March 1938 | |
| To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/W.Bell. c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 1139 10.3.38 OIL RECONDITIONER TESTS. 'LUBER-FINER', 'A.C.', 'SMITH' AND GENERAL! Each unit was tested separately, being connected to the pressure system of an oil pump supplying oil at 70°C. under a pressure of 30 lbs/sq.in., using oil collected from engine sumps supplied by the Repair Department. A fixed quantity of two gallons of this oil was used for each unit, the oil being changed for each test. Samples of the oil were taken from the reconditioner outlet and the rate of delivery also through the reconditioner outlet measured at intervals until either delivery ceased, or there was no apparent change in the condition of the oil. Finally the samples were tested on an A.C. oil Sediment Meter, using new Motorine C. as a basis for comparisons and a photograph taken of 'spot' test results from the same samples. The attached graphs B.2114 illustrate the percentage increase of purity (Sheet I) and the delivery through the reconditioner outlet (Sheet II) in relation to the testing time. The percentage increase of purification was approximately the same in each case (except the Luber-Finer) irrespective of the initial condition of the oil. LUBER-FINER This type contained either an exceptionally fine grade. filter, or else the element was small in comparison with the other types tested since the percentage increase of purity at the time the flow through the outlet ceased was comparatively low. When the filter element became clogged, the pressure in the unit apparently caused a slight direct leakage across the unit as evidenced by the temporary return of the delivery. SMITH. The filtering element in this type, whilst providing average percentage purification, was of sound construction since when the filter was full to capacity there was no leakage across the unit. Two of these units were tested, and each possessed the same characteristics. continued | ||