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).
Continued experiments with the superheated throttle system for carburetter heating on Phantom engines.
| Identifier | WestWitteringFiles\P\2July1926-September1926\ Scan010 | |
| Date | 7th February 1926 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/ACL. c.c. to BJ. Nor.✓ c.c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer}✓ c.c. to DA.{Bernard Day - Chassis Design} EY.✓ c.c. to OY. Hs{Lord Ernest Hives - Chair}/ACLl/LGS.7.2.26. CARBURETTER THROTTLE HEATING ON PHANTOM ENGINES. We have continued experiments with the superheated throttle system and obtained a comparison with the present standard system of the rate of warming up from cold, also figures are given of the amount of heat added to the radiator water. In a previous report it was pointed out that induction pipe temperatures were unreliable for estimating the rate of warming up from cold and reasons were given. Since our last tests we have adopted the following method which we think gives a direct comparison of the various systems. A separate hot-spot, independent of the induction system, is connected with the boiler or exhaust system, as the case may be, instead of the hot spot in actual operation on the engine. The induction passage of it is filled with a fixed amount of water and a thermometer indicates the rise of temperature due to the circulation of the heating medium, whether it is exhaust gas or steam. The following curves shew the rate of warming of the water with the following systems :- (1) Standard with exhaust butterfly closed. This is taken as a standard for comparison with other systems. contd :- | ||