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 comparing a Special Double Throttle carburetter with a Polyrhoe carburetter regarding explosions in the silencer.
| Identifier | ExFiles\Box 1\3\ B001_X 93-page30 | |
| Date | 25th July 1912 | |
| TBB6/L25712. Re Explosions in Silencer. Mr Royce 25.7.12. Tests with Special Double Throttle and with Polyrhoe Carburetter. Mr Platford reports as follows:- "With the Polyrhoe we have not been able to obtain firing in the silencer under any conditions of running as long as the ignition is on. The double throttle with our carburetter has certainly given less trouble in this respect, but is not as good as the Polyrhoe. To summarise the results of the experiments, what actually appears to take place is that our carburetter does not under full power high speed conditions, give off as good a "mixture" as the Polyrhoe, the induction pipe becoming somewhat charged with raw petrol, and on "retard" even although no explosive gas passes through the throttle, any air which passes through the induction pipe carries with it the petrol which passes [Handwritten vertically on left margin]: X93 [Handwritten on left margin]: Carburetter [Printed text at bottom left]: R R' B'Dep (T O H) (P'T 224 21.12) (1) 322 | ||