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).
The testing methodology for a plunger and cylinder assembly, including a diagram of the testing apparatus.
| Identifier | WestWitteringFiles\O\2April1926-June1926\ Scan143 | |
| Date | 20th May 1926 | |
| Contd. -2- The plunger was fixed in the dash pot, or cylinder, and oil forced through by means of a gear pump. The oil leaking past the piston and through the release valve in its head was measured and its rate of flow obtained, while the corresponding oil pressure acting on the piston was recorded by means of an ordinary gauge. From the results obtained we were able to interpret the rate of oil flow in terms of equivalent piston velocity and from the pressure readings the equivalent resistance at the end of the plunger rod. This established a relationship between the speed of operation of the plunger and the resistance offered by it. Tests were taken in both the "rebound" and "bump" directions and in the large and small bores of the cylinder. Contd. Blueprint Text: THERMOMETER, GEAR PUMP, SUCTION PIPE., PRESS GAUGE, PLUNGER & ROD, DAMPER CYLINDER, BYE PASS FOR REGULATING PRESS., MEASURING JAR, TESTING APPARATUS. | ||