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).
Tests and modifications for Phantom induction pipes to overcome fuel separation issues.
| Identifier | WestWitteringFiles\O\January1926-March1926\ Scan77 | |
| Date | 24th February 1926 | |
| TO R.{Sir Henry Royce} FROM E.{Mr Elliott - Chief Engineer} ORIGINAL E1/M24.2.26. Copy to - GJ " " RG{Mr Rowledge} " " HS.{Lord Ernest Hives - Chair} " " SY +8070 PHANTOM INDUCTION PIPES. The Exp. Dept. have not yet completed all the tests asked for on induction pipes. They have yet to test the carburetter built into the manifold with a throttle valve on each side of the spray chamber, as in sketch, coupled together made from an existing Phantom carburetter. The object of this test is to overcome the greatest fault we have on the induction system - e.g. the bias due to the first bend. This bend centrifugally separates out the liquid fuel from the stream of mixture. We have seen a device for overcoming this fault which is said to be quite effective. It is made by forming a reflecting surface in the elbow in place of the usual bend so that the particles of liquid fuel strike on this face, and burst into spray, rebounding approximately in new direction required. No doubt there is some loss of volumetric efficiency at high speeds with such a pipe. E.{Mr Elliott - Chief Engineer} (Stamp: RECEIVED) | ||