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).
Various arrangements for a fuel and air induction system for motor car and aero engines.
| Identifier | ExFiles\Box 31\3\ Scan014 | |
| Date | 8th December 1914 guessed | |
| -2- COPY return valve and any risk in connection with the float feed. Mr. Elliott's arrangement of my scheme does not go to the float feed, and would pass direct from the hand pump to the induction pipe simultaneously with very high pressire air, and so would be delivered in a very fine spray. One feels that any of these arrangements are best connected to very nearly the terminal ends of the induction pipe, and we are only anxious now to find out which arrangement is really the simplest. I have modified Mr. Elliott's application of my suggestion so that the petrol and air in the little chamber runs along the pipe simultaneously, and not first solid petrol, and then air, as is so likely to happen with any arrangement we have yet seen. Certainly I think that we have made great progress with this subject since Mr. Hallam has pointed out the efficiency of squirting in the petrol with the air, and it is only a question of finding out which arrangement is the better. These arrangements seem not only to be necessary for the standard motor car engine, but would be very useful on our large aero engine. They may possibly be avoided, however, when we use the electric starter on the car engine, as this ought to be able to draw the petrol explosive mixture from a minature pilot jet, which is necessary on the car engine for extremely slow running, on the direct drive. Will Mr. Hives let me know whether he finds it possible to start the car with a self starter without priming, if a very small pilot jet | ||