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).
Testing procedures for lubricating oil consumption in a standard engine.
| Identifier | ExFiles\Box 144\3\ scan0013 | |
| Date | 1st December 1914 | |
| To Wor.{Arthur Wormald - General Works Manager} for EH from R.{Sir Henry Royce} Copy to J.{Mr Johnson W.M.} 2/12/14 COPY. R2/IB11214. 1st December 1914. Re Consumption of lubricating oil on a standard engine. Wor{Arthur Wormald - General Works Manager}/Mcr16/L261114. With reference to the oil consumption per brake horse power, we are only interested in full throttle running, and should be glad if you will repeat as suggested, the test on the Mercedes engine and one of our own engines, with the scraper ring and without the scraper ring, to see whether it really makes any great difference. The extra oil should fall on the crankshaft, and not pass through the side of the cylinder. Take every care that there is no oil leaking away anywhere, or it will upset the test. The .044 pounds is more than we had been reckoning upon, and we presume that most of this must enter the combustion chamber and pass to the exhaust. It may also vary with the degree of compression, a high compression may take less oil. We may also add that we should like a test making, if possible, without the extra oil on, or only sufficient extra oil falling on the crankshaft to make the engine safely workable. The Zephyr pistons might also be tested to see whether they are better or worse. The petrol consumption should be taken at the same time, as one would expect that saving oil may waste petrol. R.{Sir Henry Royce} [Handwritten in left margin]: oC 986 | ||