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 analysis and graph comparing fuel consumption of different throttle heating systems at 1500 RPM.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan92 | |
| Date | 14th January 1926 guessed | |
| contd :- -12- 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 Graph Data: Title Box: SPEED 1500 R.P.M., AIR TEMP 33-38 °C, BAROMETER 751 M.M. Y-Axis Label: PTS/B.H.P./HOUR X-Axis Label: B.M.E.P. lbs/□" Curve Labels: STD EXH HEATED, WATER HEATED, SUPERHEATED Other text on graph: A.C.L., 1.lb. heated throttle, but this only amounts to 1 lb.sq.in. The standard system still possesses the advantage of giving a lower minimum specific consumption but the 'Superheated' curve follows it very closely. Consideration of these tests prove to us that the maximum power obtainable at any speed is substantially the same for each system but a lower minimum consumption can be obtained with the standard system than with either of the other two. contd:- | ||