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).
Preference for a water-heated throttle over an exhaust pipe valve and suggesting further tests.
| Identifier | ExFiles\Box 66\2\ scan0191 | |
| Date | 11th June 1926 | |
| To Hs. {Lord Ernest Hives - Chair} from R & E. {Mr Elliott - Chief Engineer} c. to BJ. BY. {R.W. Bailey - Chief Engineer} PN. {Mr Northey} X8230 R1/M11.6.26. RE. WATER HEATED THROTTLE. X. 8230 X. 8060 I cannot help thinking that the water heated throttle is, all things considered, better than having a valve in the exhaust pipe. It very likely has some bearing on the sticking of the throttle. I should like you to try also an increased angle of inclination of the throttle valve as we find on chassis 7-EX here that if the throttle valve is allowed to shut with some force it has a tendency to stick. I agree that the exhaust heated throttle is preferable if we can do with valve in exhaust pipe. Set someone to try all the possible suggestions: beats and kinetic energy in the exhaust should make it circulate at light load - i.e. ejector on L.H. down pipe, and injector on R.H. Naturally I have no experience in excessive cold weather, and climates. R. {Sir Henry Royce} | ||