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).
Engine water jacket heating systems and exhaust-heated throttles.
| Identifier | ExFiles\Box 66a\1\ scan0106 | |
| Date | 11th January 1926 guessed | |
| contd :- -2- should admit the water to the jacket. If there is risk of this blocking up let it be protected with 1/100 gauge - i.e. find out what happens if the water is entirely shut off, that is equal to only one pipe to top of boiler, and very small water space in boiler. This small quantity of water soon boils and sends steam to jacket. My object is always to have boiling water quickly at jacket, independent of ordinary water temperature. Probably water at 100°C is safer and more regular than anything, with a good carburetter and induction pipe. I agree that exhaust heated throttle is very good indeed, providing that it is practical and reliable, but if it gives trouble it must be modified, as there are many cars which seem to go well with less severe devices. America say their modification to do away with the valve in the exhaust is satisfactory. Is this so? R.{Sir Henry Royce} | ||