Rolls-Royce Archives
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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 detailing the motoring loss analysis and lost Mean Effective Pressure (MEP) of various components for a 4 1/4 Litre Bentley engine.

Identifier  ExFiles\Box 133\1\  scan0216
Date  28th January 1937 guessed
  
4 1/4 LITRE BENTLEY
MOTORING LOSS ANALYSIS - LOST M.E.P. OF COMPONENTS.
FIG VII.
1) LOSSES DUE TO SILENCER
2) LOSSES DUE TO INDUCTION SYSTEM
3) PUMPING LOSSES --- AND VALVE GEAR TO BOTTOM TAPPETS.
4) LOSSES DUE TO BOTTOM TAPPETS
5) LOSSES DUE TO PISTON RINGS
6) LOSSES DUE TO PISTONS AND CONN. RODS
8) LOSSES DUE TO WATER PUMP
7 9 10) BALANCE DUE TO DYNAMO, GEARS, CRANKSHAFT ETC.
X-AXIS LABEL: - R.P.M. -
X-AXIS VALUES: 1000, 2000, 3000, 4000
Y-AXIS LABEL: - LOST MEAN EFFECTIVE PRESSURE.
Y-AXIS VALUES: 2.5, 5.0, 7.5, 10.0, 12.5, 15.0, 17.5, 20.0, 22.5
ED.{J. L. Edwards} B.W.
B.4.W.
  
  


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