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).
Faulty running due to chassis battery ignition issues and the principles of the induction coil.
| Identifier | ExFiles\Box 45\3\ Scan001 | |
| Date | 16th April 1920 | |
| COPY To R.{Sir Henry Royce} from EFC. c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to En. c. to Da.{Bernard Day - Chassis Design} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to Hy.{Tom Haldenby - Plant Engineer} c. to He. c. to Cy. c. to PN.{Mr Northey} X.4057. EFCL/T16.4.20. X.3129 - CHASSIS BATTERY IGNITION. X.4067 Mr. Platford complains of some faulty running of the battery ignition on cars on test and it is considered that this may quite possibly be partly due to imperfect circuit connections on the system. To clear this matter up so far as we are concerned, we mention below certain points in connection with ignition which we have arrived at mathematically and experimentally, and to assist in the description of these points we give a diagram of low tension ignition connections. An induction coil whether trembler or plain may be looked upon as an oscillation transformer of medium frequency. By medium frequency we mean something greater than the frequency of A.C. supply and something less than the oscillation frequencies used in wireless work. The actual frequency, for instance, being of the order of 10,000 per second. We have, magnetically interlinked with the inductance component of the primary oscillatory circuit consisting of primary coil and condenser, a secondary coil Contd. | ||