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).
Device for supplying gasoline to an engine, comparing different pump designs and proposing a trial.
| Identifier | ExFiles\Box 77\4\ scan0017 | |
| Date | 26th April 1917 | |
| H.H. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -3- OY2/FMF17518. Contd. from building up to a big period at certain engine speeds. The device is supposed to feed a more or less repres- entative quantity of gasolene. When the engine is running slowly up hill with full throttle, the explosion pressure remains long enough to give a very long stroke to the pistons, while at high speeds on a small throttle, the strokes are very short. 8. I imagined you might like to try the device on the car. I think perhaps that after the War aeroplane practice will have suggested other means of supplying gasolene than the ordinary pressure system, and that the above scheme is worth your consideration. Possibly even we might care to manufacture some such scheme as part of the car under royalty arrangement with Mr. Twemley. I believe that similar pumps, which have been devised, which use an aneroid disc instead of a plunger, have been troubled with breakage of the disc. Mr. Twembley has had the courage to risk using a plunger and appears to have succeeded. The sylphon corrugated tubing might be used instead of the plunger, I imagine. GY. | ||