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).
Single sleeve two-cycle and four-cycle engine designs, referencing Ricardo's work and the development of new cylinder models.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan267 | |
| Date | 1st September 1930 guessed | |
| (2) adapted to compression ignition with special features, it may be patentable and useful. It seemed at first to be only suitable for small sizes but by using 3 or 4 exhaust valves instead of a single one it could be made for larger sizes. It has no inlets so this is possible. The cylinder construction is simple. SINGLE SLEEVE TWO CYCLE. In consequence of the trouble with the junk ring sticking, and the suggested liner construction involving so many joints and the risk of water leaks, I have decided to concentrate on - SINGLE SLEEVE FOUR CYCLE.--- with Mr. Ricardo's swirling turbulent scheme, which has given results which are the best known, but with this (4 cycles) we shall want from 12 to 16 cylinders for smooth running and light weight per HP. We are therefore designing two new model/single cylinders for our unit, especially adapted for multiple cylinder engines - i.e: Non-sleeve 2 cycle.... RR. and Ricardo. Single sleeve 2 cycle. Ricardo of RR. design. R.{Sir Henry Royce} | ||