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).
The testing of a Buick oil cooler on a Peregrine No. 6 engine unit.
| Identifier | ExFiles\Box 179b\3\ img257 | |
| Date | 17th February 1933 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Std. c. Sg.{Arthur F. Sidgreaves - MD} Mor. c. Rg.{Mr Rowledge} R.{Sir Henry Royce} c. Hy.{Tom Haldenby - Plant Engineer} Lr.{Mr Ellor} Hs{Lord Ernest Hives - Chair}/Std.2/RT.17.2.33. x4693 x4027 REPORT ON BUICK OIL COOLER TESTED ON PEREGRINE NO.6 ENGINE UNIT. The cooler, Buick type, as received on test, was fitted to the engine on the left hand side just above the dynamo. The whole of the circulating water was passed through the cooler, as was the whole of the oil pump delivery, the connections being made as shown diagrammatically. A by-pass was arranged between the oil pump and the cooler so that it was possible to vary the amount of oil through the cooler, the by-pass releasing direct into the sump. Thermometers were fixed in the inlet and outlet oil pipes of the cooler, in the water inlet to cooler and also in the outlet from main bed oil cooler. Three tests were attempted :- (1) To determine and compare the temperature drop across cooler for varying inlet oil temperatures. (2) To determine the total effective temp. drop caused on the system by putting this oil cooler in the system. (3) To compare the amounts of heat removed from oil (by this cooler) with different oil flows through the cooler. The account of each test and results are as follows. The curve attached is the characteristic curve of this cooler. Finally, the cooler was removed from the engine, stripped and measured and weighed, while a photograph of the interior was taken. These details are recorded on the last sheet of this report. (1) Comparison of temp. drops for varying oil inlet temp. The engine was run at 4500 R.P.M., the water temp. (inlet) was kept constant at 70°C, and the oil inlet temps. were varied by means of external bed oil cooler. | ||