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).
Series of graphs analysing oil pressure, viscosity, and temperature characteristics under various conditions.
| Identifier | WestWitteringFiles\R\2October1927-November-1927\ 147 | |
| Date | 16th November 1927 guessed | |
| FIG. B GRAPH I OIL PRESS. LBS. □" PRESS L.P. VALVE OPENS COMPRESSOR OIL 20°C STROKE INS. 120 R.P.M. AXLE VEL: 3FT/SEC INCREASE IN VELOCITY PRESSURE FACTOR DUE TO VARIOUS SPACING OF ORIFICES. NOTE. L.P. VALVE DOES NOT OPEN FOR SLOW 2" STROKES. GRAPH II COMPRESSOR OIL USED AT 20°C OIL PRESS. LBS. □" FRONT AXLE VEL. FT/SEC. 2" STROKE 4" STROKE 6" STROKE SHOWS MAX. PRESS. ATTAINED DOES NOT VARY VERY MUCH WHETHER PRODUCED BY LONG SLOW STROKES OR BY SHORT QUICK ONES GIVING SAME AXLE VELOCITY. GRAPH III OIL PRESS. LBS. □" AXLE VEL: 7.8 FT/SEC A DROP 15% C DROP 10% COMPRESSOR OIL OIL TEMP. C° DROP IN VELOCITY PRESSURE INCREASE FACTOR DUE TO FALL IN OIL VISCOSITY. PRICE'S MOTORINE C° TRIED ALSO AT 15°C WITH NO FURTHER PRESS. RISE. GRAPH IV VISCOSITY CURVES PRICE'S MOTORINE COMPRESSOR OIL OIL TEMP. C° TIME OF EFFLUX SECS ACTUAL DIMENSIONS OF RESTRICTION A, WASHERS & DISTANCE PIECES RE-ARRANGED FOR B & C. | ||