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).
Two graphs illustrating the effects of temperature, load, and piston velocity on high pressure valve opening.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 157 | |
| Date | 2nd June 1927 guessed | |
| GRAPH II EFFECT OF TEMP AND LOAD ON HIGH PRESSURE VALVE OPENING LEGEND: OUTSIDE RANGE CONCEIVABLE CONDITIONS Y-AXIS: % TOTAL STROKE H.P. VALVE OPEN. X-AXIS: SHOCK DAMPER OIL TEMP: C° CURVE 1: 70 LBS. BALL PIN LOAD. CURVE 2: 150 LBS. BALL PIN LOAD. NOTES: PISTON STROKE 1.4" SPEED 440 STROKES / MIN. MAX: PISTON SPEED 16.5 INS/SEC. LOADS TAKEN AT 7.5" LEVER. GRAPH III EFFECT OF PISTON VELOCITY ON HIGH PRESSURE VALVE OPENING LEGEND: OUTSIDE NORMAL RANGE Y-AXIS: % TOTAL STROKE H.P. VALVE OPEN. X-AXIS: MAX: PISTON SPEED INS/SEC. NOTES: PISTON STROKE 1.4" BALL END MOVT 7.5" LEVER = 6.0" LOAD AT LEVER END 150 LBS. | ||