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 of exhaust system pressure against crank angle for a 40-50 engine at 2000 RPM.
| Identifier | WestWitteringFiles\L\2April1924-June1924\ Scan114 | |
| Date | 4th April 1928 | |
| 40-50 ENGINE. STANDARD EXHAUST SYSTEM. PRESSURE SCALE 1" = 6.2 lbs/□" CYL NO 6. R.P.M. 2000. CUT OUT OPEN. MAX PRESS ON NEAR END OF EXH STROKE = 2.79 lbs/□" INDICATED VOL. EFFICIENCY = 88% EXH. SYSTEM TESTS. Indicated Vol. Efficiency ATMOS LINE PISTON DISPLACEMENT FOR CRANK ANGLE 2 | ||