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 of the inlet valve lift and piston displacement curve for a 20 HP engine.

Identifier  ExFiles\Box 22\4\  Scan108
Date  28th March 1927
  
11
20 H.P. ROLLS-ROYCE ENGINE.
INLET VALVE LIFT & PISTON DISPLACEMENT CURVE.
STROKE = 4.50"
(NO TAPPET CLEARANCE)
28-3-27
VALVE LIFT (INCHES).
.30
.20
.10
0
POSITION OF CRANKSHAFT. (DEGREES).
320° 340° T.D.C. 20° 40° 60° 80° 100° 120° 140° 160° B.D.C. 200° 220° 240° 260°
DISPLACEMENT OF PISTON FROM TOP OF STROKE (INCHES).
0 1 2 3 4 4 3
  
  


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