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).
Analysis of oil pressure fluctuations and temperature caused by a lag in oil returning to the base chamber.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page185 | |
| Date | 30th January 1933 | |
| 84057. Chateauroux 30/1/33 To HS{Lord Ernest Hives - Chair} We have to day been trying to fathom the oil question We have proved out the following (1) Variation of Oil pressure during running. (2) Cause of drop in pressure when braking. (3) Probable cause of high oil temperature The three items are caused by the lag of oil returning to the base chamber. There is three quarters to one gallon of oil held in the return passages of the engine, out of one and a half gallons. This means at high speeds we have on occasions half a gallon of oil in the base chamber for cooling purposes. This causes the fluctuations | ||