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 road trials of battery ignition systems, investigating the causes of misfiring.
| Identifier | WestWitteringFiles\D\October1919\ Scan29 | |
| Date | 24th October 1919 | |
| To R.{Sir Henry Royce} from EFC. c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EH. c. to By.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} ORIGINAL. EFC10/T24.10.19. ROAD TRIALS OF BATTERY IGNITION We have made a number of trials under different circumstances of the battery ignition on the road, using for this purpose chasses lent to the Experimental Dept. by the Test. Dept. The object of these trials has been to determine the factors which make or mar the ignition, from the point of view of mis-firing. Such mis-firing as does occur takes place mostly on the 'pick-up' at comparatively slow engine speeds. At high engine speeds the firing would appear to be quite regular shewing us that mis-firing is not due to too small stored magnetic energy in the coil, as if it were, this quantity being reduced at the higher speeds by the shorter period of make, would naturally cause the ignition to gradually go off. Instead of this, it appears from simultaneous trials made on the bench, that intermittent missing occurs under conditions in which the non-missing sparks are of an intensity which by no means corresponds to any inclination to miss on the score of insufficient energy. The high tension circuit from the high tension terminal of the coil to the sparking plug involves first of all a long high tension wire passing through an earthed metallic Contd. FH 5227 (200 L) (2'D '08 S8-TI) 'DW' Street? | ||