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).
Description of a cylinder and piston design focusing on a protuberance within the combustion chamber.
| Identifier | ExFiles\Box 147\2\ scan0179 | |
| Date | 21th December 1939 guessed | |
| the cylinder the protuberance may be shaped so that on the side of the combustion chamber lying to one side of the cylinder, the walls of the protuberance are a continuation of the walls of the piston or lie slightly within the same and are parallel with the axis of the cylinder. Preferably in this last mentioned case the top of the protuberance is cut at an angle so as to be inclined toward that part of the combustion chamber which lies to the side of the cylinder bore as afore- said. Examples of this invention are illustrated in the accompany- ing drawings in which Figure 1 is a section through a cylinder according to one form of this invention with the piston shown in elevation. Figure 2 is a plan view of the cylinder there illustrated. Figure 3 is a view corresponding to Figure 1 showing a different form of cylinder according to this invention. Figure 4 is a view corresponding to Figure 2 of the cylinder illustrated in Figure 3. A is a cylinder in which reciprocates the piston B the piston rings of which are shown at B1. At the top the cylinder head has a portion with walls normal to its axis these walls 4. | ||