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).
Advantages of a new, simpler piston design to reduce engine knock and wear.
| Identifier | ExFiles\Box 181\M11\ img090 | |
| Date | 31th October 1918 | |
| To E.H. from R.{Sir Henry Royce} -2- sure from our own observations, that we can considerably reduce the tendency to knock in the new piston, and by leaving a well lubricated surface the wear should be imperceptible. The drawing we have sent you should be tried at once. It is so simple that one doubts if it has any virtues, but it has many important advantages over those we have tried:- (1) It will work cooler. (2) The heat should not reach to lower portion. (3) The pin is lower down. (4) A continuous surface well lubricated low down away from the heat carries the thrust, and owing to the surface being in contact with the cylinder the heat should pass to the jacket before reaching the lower parts. (E) It requires a short connecting rod. R.{Sir Henry Royce} | ||