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).
Fuel consumption tests on a 49GB carburettor and methods for heating the air intake.
| Identifier | ExFiles\Box 181\M11\ img171 | |
| Date | 14th April 1919 | |
| To EH. from R.{Sir Henry Royce} ORIGINAL. R4/G14.4.19. X.3056.- X.2681.- RE CONSUMPTION TESTS ON 49 GB. Your consumption tests on 49GB are most interesting. We do not know how many tests you have made with hot air to the carburetter, but we think this, although good, if it could be arranged, is very difficult to arrange on any car. If the air is brought any distance it is not hot, and it is impractical to arrange the carburetter close to the exhaust pipe for fear of fire. I should be glad of your views on this matter. Some time ago it was thought possible to arrange a small radiator of the honeycomb pattern, say, in a circular form, just behind the carburetter, so that in drawing air it is drawn through the horizontal tube with water passing between them in the same way as the ordinary radiator. It would be quite easy to make one 3" or 4" diameter of the standard length of tube, and try whether this means of heating the air entering the large throat was valuable. Apparently, the more heat we get the better the consumption, but we assume that with very good benzol or petrol the same consumption will be obtained with less heat. One also realises that the greater the heating, the less the maximum full speed horse power. R.{Sir Henry Royce} R.R. 235A. (500 T) (S.B)D.{John DeLooze - Company Secretary} 408. 28-1-17+ Bm. 2/156/18. | ||