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).
Technical committee memo discussing the causes of explosions in the silencer.
| Identifier | ExFiles\Box 1\3\ B001_X 93-page04 | |
| Date | 18th March 1912 | |
| Mr Wormald Recd. 27/3/12. Le CanadelHenry Royce's French residence. 18th March.1912. Technical Committee. X 93 Explosions in Silencer. We have two features which make these rather more prevalent with us than with most cars. - 1. Carburation is quite good even when only a very small amount of air is passing through carburetter. Most carburetters run off weak mixture under these conditions which gives no trouble in silencer. 2. Having a governor it is necessary to have a throttle valve which is very free to work, and, therefore, cannot be made very air tight. We have so repeatedly found the advantage of our governed system of control that we do not wish to part with it. The first reason may be lessened by the use of a larger bore small throat in the carburetter, and consider-ing how much more we know about the slow running there is just the odd chance that this throat would allow of an increase of size without much ill effect upon the slow running. At the same time, it might lessen the risk of an explosive mixture passing when the throttle is closed. | ||