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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 showing motoring loss analysis and percentage losses of components for a 3 1/2 Litre Bentley engine.

Identifier  ExFiles\Box 133\1\  scan0217
Date  28th January 1937
  
3 1/2 LITRE BENTLEY
Fig. XII
C 83
MOTORING LOSS ANALYSIS - PERCENTAGE LOSSES OF COMPONENTS
UNIT B.7. :- STANDARD 3 1/2 LITRE BENTLEY WITH TEST BED EXHAUST SYSTEM (2c)
1) LOSSES DUE TO SILENCING SYSTEM
2) LOSSES DUE TO INDUCTION SYSTEM
3) PUMPING LOSSES AND VALVE GEAR DOWN TO BOTTOM TAPPETS
4) LOSSES DUE TO BOTTOM TAPPETS
5) LOSSES DUE TO PISTON RINGS
6) LOSSES DUE TO PISTONS AND CONN. RODS
7) LOSSES DUE TO WATER PUMP
8) BALANCE OF LOSSES DUE TO DYNAMO, GEARS, CRANKSHAFT AND CAMSHAFT.
AXIS LABELS:
PERCENTAGE LOSSES
R.P.M.
HANDWRITTEN NOTES:
B3 / C (Right margin, vertical)
B3 / 28.1.37. (Bottom right corner)
  
  


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