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 plotting Brake Horse Power and B.M.E.P. against R.P.M. to show the effect of variation in exhaust duration on a Bentley single cylinder engine.
| Identifier | ExFiles\Box 133\2\ scan0086 | |
| Date | 5th January 1944 | |
| BENTLEY SINGLE CYLINDER TESTS SHEET 3. EFFECT OF VARIATION IN EXHAUST DURATION Nº 2 RAMP HEAD (LEC 3871) INLET VALVE - 1.500 DIA NATURALLY ASPIRATED ZENITH TRIPLE DIFFUSER CARBURETTOR (32% CHOKE) OPEN EXHAUST NORMAL INLET TIMING (O.{Mr Oldham} 4°E; C. 51°L) COMPRESSION RATIO = 6.5 EXHAUST VALVE = 1.400 DIA AEROLITE PISTON FUEL = DTD 224 BRAKE HORSE POWER B.M.E.P. (lbs/Sq. In.) R.P.M. NORMAL EXHAUST TIMING O.{Mr Oldham} 51°E; C. 7°L LONG EXHAUST DURATION O.{Mr Oldham} 57°E; C. 15°L SHORT EXHAUST DURATION O.{Mr Oldham} 47°E; C. TDC STAMP: 5-1-44 | ||