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).
Performance graph and analysis comparing fuel consumption against B.M.E.P. for different engine heating systems at 750 RPM.
| Identifier | ExFiles\Box 66\2\ scan0156 | |
| Date | 2nd February 1926 guessed | |
| contd :- -11- 750. R.P.M. AIR TEMP 33 To 40 °C BAROMETER 754 M.M. Pts/B.H.P./Hour. WATER HEATED SUPERHEATED. STD EXH HEATED. B.M.E.P. lbs/□" GAIN IN ECONOMY (Max) By STD HOT SPOT. MAX mP. A.S.L. The specific consumption for the superheater water system is practically the same with .532 pts/HP/Hr. but the minimum consumption for the standard system is as low as .500 pts/HP/Hr. Also the standard has a wider range of consumption over which steady running can be obtained. The following curves are for 1500 r.p.m. At this speed a slightly higher B.M.E.P. is obtained with the water heated throttle, but this only amounts to 1 lb.sq.in. contd :- | ||