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).
Engine cam and cylinder head design, comparing different methods for achieving turbulence and efficiency.
| Identifier | ExFiles\Box 65\4\ scan0328 | |
| Date | 10th March 1926 guessed | |
| contd :- -3- grinding the cam. Another method of accomplishing the same object would be to remove the rollers from the ends of the tappets and shape these ends to a curve equivalent to a very large dia. roller. We suspect the Hispano may have a high intake gas velocity [redacted] combined with their cam form may give good turbulence without reducing volumetric efficiency. LeC.2208 it is hoped would possibly possess a higher degree of turbulence than a flat head with a cone topped piston apart from being more compact and with closer plugs. LeC.2209 approximates to Ricardo tank engine head shewn in fig.5. LeC.2211. while LeC.2210 employs the principle of figs. 3. and 4. of producing turbulence, at the same time being compact, (excepting the thin gas section above the piston) and with maximum inward position of plugs. [Watermark text: DICKINSON BOND 1804 E.{Mr Elliott - Chief Engineer} MADE AT CROXLEY] | ||