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).
Graph showing power variation, B.M.E.P., and fuel consumption against R.P.M. for a Bentley single-cylinder engine test with different choke sizes.
Identifier | ExFiles\Box 134\2\ scan0024 | |
Date | 23th April 1957 | |
BENTLEY SINGLE CYLINDER TESTS. SHEET 2 POWER VARIATION WITH CHOKE SIZE (TWIN INLET HIGH POWER HEAD) HIGH POWER CYL. HEAD TO L.E.C. 4/23/57 TWO INLET VALVES 1.225 DIA EXHAUST VALVE 1.500 DIA. COMPRESSION RATIO :- 6.13 OPEN EXHAUST FUEL = DTD 224 VALVE TIMING I.O. 2°E I.C. = 28°L E.O. 51°E E.C. = 7°L 34 M/M CHOKE 36 M/M CHOKE 38 M/M CHOKE 40 M/M CHOKE APPROX. SP.{Mr Spinney} FUEL CONSUMPTION. (COMMON TO ALL CHOKE SIZES) Vertical axis left: BRAKE HORSE POWER. Horizontal axis bottom: R.P.M. Vertical axis right top: B.M.E.P. (LBS/SQ. IN.) Vertical axis right bottom: SP.{Mr Spinney} FUEL CONS. (PTS/BHP/HR) Margin left: V1745. | ||