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).
Description of a carburetter for an internal combustion engine with dual induction pipes and successive operation.
| Identifier | ExFiles\Box 147\2\ scan0085 | |
| Date | 19th September 1939 guessed | |
| 3. A carburetter for an internal combustion engine of an automobile of the type in which the air passage way is controlled by a trunk member displaced by engine suction on the carburetter side of the throttle valve and the said trunk member carries a tapered needle which controls a jet through which fuel is drawn into the air stream flowing through the air passage way, characterised in that there are two induction pipes each serving the same cylinders and each controlled by a throttle valve, which throttle valves are interconnected so as to be opened successively, a trunk member controls the air passage way to the two induction pipes to which it admits air successively as it is moved and the trunk member carries two needles each controlling a jet, one jet being adapted to supply fuel to the induction pipe first coming into operation and the other to that secondly coming into operation, the latter jet being masked from the air stream by the trunk member until the trunk member has opened the air passage way to this induction pipe. B | ||