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).
Notes regarding alterations to the induction system, specifically the application of heat to the carburettor.
| Identifier | ExFiles\Box 50\3\ Scan103 | |
| Date | 8th June 1921 | |
| X.4305 Extract from R10/G8.6.21. X.3614 - RE U.S.A. COMPLAINTS. X.4305. X.2758. FURTHER NOTES WITH REGARD TO ALTERATIONS TO THE INDUCTION SYSTEM. As pointed out earlier, we find we have confirmed the necessity of applying heat close up to the carburetter. This is exactly the same as we have always been in the practice of doing with the water-jacketed throttle, and there is considerable advantage in applying still more heat to this part of the throttle, showing the advisability of keeping the cooling water at the highest possible temperature, so that the water passing the throttle is also at the highest temperature possible. We are now proposing, as a result of Mr. Hives experiments, that the hot water to this jacket shall be replaced by hot air from the exhaust. It is with this that Mr. Hives has found the most advantageous improvement, and the only reliable result that has been found. If sufficient heat is applied to the throttle, when the contour of the induction pipe is of very much less importance. We are at present engaged in a design in which we are moving the carburettor higher up, and facing horizontally over the top of the cylinders, by giving it quarter of a turn, so that the cloatchamber is on the radiator side of the carburettor. Contd. | ||