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).
Letter discussing a vaporizer scheme, the use of kerosene fuel, and the function of a hot throttle and a Re-Atomizer.
| Identifier | ExFiles\Box 75\2\ scan0266 | |
| Date | 12th September 1921 | |
| CC Mr. Belnap Mr. Nadin x2758 ROLLS-ROYCE OF AMERICA INC. SPRINGFIELD, MASS. Sept. 12, 1921 Oy3 - G 12921 Dear Hives:- Re: Induction Pipes Replying Hs{Lord Ernest Hives - Chair}5/LG30.8.21: Your last few letters about vaporizer scheme (Dorris scheme, but we do not call it that) have done us all personally more good than a week's vacation. We think it remarkable and almost unbelievable that out of so many "possibles" we have both settled on the one scheme as the best. There can be no further question about the badness of the fuel you are using. Nothing worse could be desired. In fact, I should think you could quite safely run on straight kerosene and silence any possible criticism for ever. I think your vaporizers are working all the time, even after the engine gets thoroughly warm, and even with the hot throttle in operation, but the little "spits" of liquid fuel are evaporated as soon as they enter the boilers. I imagine that with the hot throttle in operation, liquid fuel would only pass into the boilers under conditions of acceleration. Without the hot throttle and without weirs, we do collect a little fuel in small splashes all the time the engine is running, when bottles are substituted for the boilers, but, of course, the boilers deal with these and are dry after the first few minutes of running. Our next urgent desire is to hear what results you get with the vaporizer scheme without the hot throttle. We get a wonderful improvement, as I have already written you, and we have not used your weirs, which we think are so excellent that we are instructing an experimental set post-haste. I send you herewith an advertisement of the Penberthy Re-Atomizer which has recently been placed on the market. This is dependant on the principle of re-blowing, and fails of course at low speeds full throttle. | ||