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).
Proposed new design of carburettors for the 'Vee' engine, focusing on float chamber and emulsion tube placement.
| Identifier | ExFiles\Box 42\3\ Scan080 | |
| Date | 22th January 1927 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/ACL. √38261 Hs{Lord Ernest Hives - Chair}/ACL1/T22.1.27. c. BJ. WOR.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} c. E.{Mr Elliott - Chief Engineer} BY.{R.W. Bailey - Chief Engineer} F.10. CARBURETTERS FOR THE "VEE" √3933 We have consulted together on the various points with regard to the proposed new design of the carburetters for the "Vee" which is to embody a high petrol level and be unaffected by tilting and acceleration. We agree that a fore and aft float chamber should be used and the emulsion tube placed directly in the choke because previous tests made upon this point proved that the direct diffuser was superior with regard to acceleration to that type which is situated in the float chamber, like the new type Claudel. It is significant that Strombergs who have made carburetters with the emulsion tube in the float chamber on their latest models have this placed direct in the choke with a high petrol level. It is quite probable that with the best proportions and arrangement of the other factors governing acceleration, the latest Claudel arrangement could be made to work, but we think that the optimum results will only be obtained with a direct emulsion tube in the throat. Reviewing briefly the factors which we have found to be of importance to satisfactory operation, we would recommend for consideration the following points when undertaking the design of the new carburetter :- Contd. | ||