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 Brake Mean Effective Pressure (B.M.E.P.) against gas velocity for different engine configurations.
| Identifier | Morton\M4.2\ img012 | |
| Date | 1st January 1923 guessed | |
| B.M.E.P. lbs/□" 70 80 90 100 110 120 B.M.E.P. AGAINST CONVENTIONAL GAS VELOCITY PAST VALVES BMEP STARTS TO FALL AT APPROX 160 FT/SEC GAS VEL. FOR E.A.C. & 183 " " " " HISPANO. HISPANO E.A.C. & R.R. CARBS. GAS VELOCITY PAST VALVES Ft/SEC. 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320 | ||