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).
Performance graph showing fuel consumption (PTS/BHP HR) against engine speed (RPM) for a Bentley engine with varying fuel head pressures.

Identifier  ExFiles\Box 27a\2\  Scan231
Date  31th July 1933
  
UNIT C XI
BENTLEY
CARBURATION
RM{William Robotham - Chief Engineer} B 15 / JULY 31 '33
COMP RATIO 4.85 : 1
CAMSHAFT EB.318 / (1 3/4")
2 - 1 3/4 SU CARBS ON PIPES EB949 I.S. MOD A.10401. RESTN V.583
COMPLETE AIR SILENCER
COMPLETE EXHAUST SILENCER OFF B.I CHASSIS.
FULL THROTTLE METERING
No RR.X. NEEDLES
(JETS SET FOR SLOW RUNNING)
PRATTS "ETHYL"
1 FUEL HEAD = 3" (0.41 LBS. SQ. IN.)
2 " " = 6" (0.82 " " )
3 " " = 10 1/2" (1.64 " " )
PTS / BHP HR
R.P.M.
C.R.S.
  
  


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