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).
Report page discussing engine oil pressure at idling speeds and the Curtiss oiling system.
| Identifier | ExFiles\Box 72\1\ scan0143 | |
| Date | 19th November 1929 guessed | |
| contd :- -2- pressure, which was normally 100 lbs/sq.in., fell off rapidly as the engine was throttled down to idling speeds. At low idling speeds the pressure was between 30 and 40 lbs/sq.in. We imagined this was deliberately arranged to reduce the tendency to overoil at idling speeds. Examining their release valve we found the diameter of this to be only .265", the high main pressure therefore depends not only on the release valve spring but upon the orifice size and oil viscosity. Appended is a diagram of the Curtiss oiling system. Hs{Lord Ernest Hives - Chair}/A.C.Lovesey. | ||