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).
Experiments with various induction pipe systems on the Phantom engine to improve distribution.
| Identifier | WestWitteringFiles\Q\February1927-March1927\ 33 | |
| Date | 2nd February 1927 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/ACL. c.c. to BJ. Wor.{Arthur Wormald - General Works Manager} c.c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c.c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c.c. to OY. Hs{Lord Ernest Hives - Chair}/ACL1/LG17.2.27. INDUCTION PIPE EXPERIMENTS ON PHANTOM ENGINE. Handwritten: X8070, X8080 We have carried out a number of experiments with various induction systems on the Phantom - both lighter and standard - the object being to make the distribution less dependent on heat and if possible replace the exhaust hot spot with a hot water jacket. In practice we have found the present standard system gives good and consistent results when working at its normal temperature with exhaust heat also with water heat when the water has been in the region of 70 to 80°C. The trouble which has been manifest with the latter or hot water system, is the distribution when starting with a cold engine which continues to be erratic - at low speeds - until the normal working temp. is reached. Our investigation has been chiefly directed towards improving the cold starting conditions as in previous work, both on the test bed and extending over road tests, we have not succeeded in appreciably improving the normal working distribution either when using exhaust or water heating. During these tests a considerable number of induction pipes were tried for cold distribution and while these in most cases considerably influenced the high speed full throttle performance they gave no appreciable improvement over the contd :- | ||