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 comparing the indicated power and consumption of Ramp and Standard cylinder heads for Bentley single cylinder tests.
| Identifier | ExFiles\Box 133\2\ scan0070 | |
| Date | 1st November 1937 guessed | |
| SHEET 6 1121A BENTLEY SINGLE CYLINDER TESTS INDICATED POWER & CONSUMPTION COMPARISON OF RAMP & STD. CYLINDER HEADS. NATURALLY ASPIRATED OPEN EXHAUST FUEL - DTD 224 COMPRESSION RATIO: RAMP = 6.59; STD = 6.40 VALVE TIMING (.020 CLEARANCE): I.O. 4°E; I.C. 51°L; E.O. 51°E; E.C. 7°L (STANDARD BENTLEY) RAMP CURVES STANDARD CURVES SP.{Mr Spinney} FUEL CONS. (PTS/BHP/HR) (PT/IHP/HR) IHP IMEP BHP BMEP MOTORING LOSSES, COMPILED FROM CURVES SHEWN ON SV.21 (STD. BENTLEY) AXIS LABELS: LEFT Y-AXIS (TOP): SPECIFIC FUEL CONS. (PTS/HP/HR.) LEFT Y-AXIS (BOTTOM): MEAN EFFECTIVE PRESSURE (LBS/SQ. IN.), MOTORING LOSSES MEP (LBS/SQ. IN.) RIGHT Y-AXIS: HORSE POWER X-AXIS: R.P.M. | ||