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).
Page discussing engine lubrication, oil circulation, and consumption rates for a Phantom model.
| Identifier | ExFiles\Box 178\1\ img146 | |
| Date | 19th May 1926 | |
| - 13 - Hs{Lord Ernest Hives - Chair}/ACL/T19.5.26. greatest tendency to overoil. This at first sight may seem rather paradoxical but we must remember that a fixed spring is employed for each release valve and pressures below that at which it "releases" will be determined by the freeness with which oil can escape through the bearings. AMOUNT OF OIL CIRCULATION NECESSARY. The excess lubricant passing through the bearings not only assists in cooling them but is also employed to lubricate the cylinder walls. From our experiments we find that we can supply oil to the walls to result in a consumption as low as 1500 mls/gallon with good fitting plain concentric rings and still satisfy the demands of both cylinder and bearing lubrication. We shew here curves of the oil flow through the bearings of a Phantom having carefully fitted bearings which with plain concentric rings gives a consumption of about 1300 miles per gallon. contd. | ||