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 graph showing the effect of supercharging on power and brake mean effective pressure for a Buick 40-1936 engine.
| Identifier | ExFiles\Box 150\1\ scan0159 | |
| Date | 11th June 1936 | |
| TEST NO. 35D-26 SUPERCHARGE; BUICK 40-1936; DETROIT CURVE SHEET NO. _____ EFFECT OF SUPERCHARGING ON POWER AND BRAKE MEAN EFFECTIVE PRESSURE (POWER REQUIRED FOR SUPERCHARGING HAS NOT BEEN DEDUCTED) Y-AXIS: BRAKE HORSEPOWER AND BRAKE MEAN EFFECTIVE PRESSURE, POUNDS PER SQUARE INCH, CORRECTED TO 103°F.{Mr Friese} X-AXIS: ENGINE SPEED, R.P.M. DATA SERIES LABELS: - BRAKE MEAN EFFECTIVE PRESSURE - 5.55 COMP. RATIO WITH 10" MERCURY MANIFOLD PRESSURE - 4.25 COMP. RATIO WITH 10" MERCURY MANIFOLD PRESSURE - 5.55 COMP. RATIO STD. ENGINE - BRAKE HORSEPOWER TEST CONDITIONS: A.{Mr Adams} FULL THROTTLE B. MAXIMUM POWER SPARK ADVANCE C. 12 TO 1 - 13 TO 1 AIR-FUEL RATIO C 95X ON 25 R312-30 XN2917 ETHYL GASOLINE CORPORATION, ENGINEERING LABORATORY JUNE 11, 1936 | ||