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).
The requirements for early ignition in EAC engines, considering exhaust manifold design and pre-ignition.
| Identifier | ExFiles\Box 72\4\ scan0342 | |
| Date | 28th March 1924 | |
| R.R. 493A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. Expl. No. 9230 REF: Hs{Lord Ernest Hives - Chair}/ACL/28.3.24. using a manifold which prevented exhaust interference from other cylinders. Re. Early Ignition required with EAC engines. Standard systems. With a large percentage of inert gas in the charge we should expect to have to give earlier ignition. The heating effect of the residual exhaust has probably an important influence on pre-ignition because with the single exhaust pipes to each port pre-ignition was not so marked as with standard system. [Watermark: 1804] Hs{Lord Ernest Hives - Chair}/ACL. [Watermark: MADE AT CROXLEY] | ||