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).
Throttle control mechanisms and petrol efficiency, comparing a proposed idea to Lanchester's design.
| Identifier | ExFiles\Box 1\3\ B001_X 93-page02 | |
| Date | 3rd April 1912 guessed | |
| (2) but little or no petrol will be carried with it and no explosions will take place. Experiments will prove the correctness of this conclusion, it seems so simple that one would think there was some oversight somewhere. Should we wish the throttle to be pressed tightly closed independent of the governor, a spring could be arranged to shut the throttle, unless the control handle on the steering column were advanced to a running position. The value of this idea is its extreme simplicity if it will fill the requirement and is much better than letting air in the induction pipe or anything I have before suggested, it should also save a small amount of petrol and be silent. Lanchester and many others purposely allow the throttle to remain open slightly always. Such conditions of running are obviously bad from our point of view, becasue if the engine fires it does not retard the car when required, and if it does not fire the small charges which is more often the case when the car gives off the pungent smell of unburnt petrol as the Lanchester did. F.H.R. | ||