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).
Explaining how to reduce piston knocks in a cold engine by using late ignition.
| Identifier | ExFiles\Box 35\2\ scan 101 | |
| Date | 25th August 1919 | |
| To R.{Sir Henry Royce} from EH. c. to CJ. c. to BN.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to PN.{Mr Northey} c. to C. EH2/LG25.8.19. PISTON KNOCKS. X.2748. A way to greatly reduce piston knocks when an engine is cold is to run with late ignition during the warming up process. Eearly ignition makes the knocks much worse. EH. H.M. 235 B (100) S (T) K.{Mr Kilner} 67a. 25-5-19. C) 2376 | ||