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).
Carburettor modifications, cold weather operation, and the potential future use of paraffin carburettors.
| Identifier | ExFiles\Box 50\3\ Scan069 | |
| Date | 27th April 1921 | |
| contd. -2- fixed on the float-chamber of the carburetter, and will have a special cock controlled from the dash, and a choke so that the slow running of the engine will, when the choke is used, prime the engine much the same as at present. When the choke is removed the engine should always run on slowly, and the starting with moderately good fuel should be easy and certain. In conclusion, it will be remembered that in all future cars in cold climates the radiator will be fitted with louvres, so as to keep the engine house and cooling water up to as high a temperature as is practicable. This, to my mind, prohibits the use of alcohol to prevent freezing as with alcohol the circulating water, the engine room, and under the bonnet will not be kept hot enough to give good carburation with poor fuel. We cannot make other alterations, and should the fuel become still worse, one can only think it will be necessary to adopt or scheme a real paraffin carburetter. R. {Sir Henry Royce} | ||