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).
Page describing the function of cylinder, piston, fuel supply, and induction pipe components with associated reference points.
| Identifier | ExFiles\Box 147\2\ scan0080 | |
| Date | 19th September 1938 guessed | |
| of the cylinder B¹ through a hole B² in the trunk member which has communication with the cylinder through the interior of the trunk member A¹ and piston B which are hollow. Fuel to form a mixture with air entering through the passage way A is supplied through two jets C and C¹ which are controlled by tapered needles shown at C² and C³. The jet C¹ is formed in a circular upstanding boss integral with the floor of the passage way A which when the trunk A¹ is in its lowest position, as shown in the drawing is masked by or lies within a circular depression C⁴ formed in this trunk member. The induction pipes are formed of two castings D and D¹ which are secured together and divided by a horizontal diaphragm shown at D², the induction pipe above the diaphragm D² being of greater cross section than that below. Each of these induction pipes is controlled by a butterfly throttle valve, the valves being shown respectively at D³ and D⁴. The valve D⁴ is operated directly through 3 | ||