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).
Set of conclusions on combustion chamber design for high-speed C.I. and 2-stroke aero engines.
| Identifier | ExFiles\Box 179b\3\ img170 | |
| Date | 7th February 1933 | |
| -4- Hs{Lord Ernest Hives - Chair}/Ud.S/KT.7.2.33. We therefore arrive at the following conclusions :- (1) That a firm of very great experience in high speed C.I. engines considers that a precombustion chamber engine is suitable for aero work, has many advantages, and is prepared to spend considerable sums of money to back its opinion. (2) That we are, therefore, not alone in believing in the advantages of a combustion chamber design for aero work, other than the open type with direct injection. (3) That the fact that a combustion chamber used in small cylinders and required to work over a wide speed range does not show a good economy is no criterion that the same design, when applied to larger cylinders working over a narrower speed range, must still be inefficient. (4) That the proposed R.R. 2 stroke engine may be much more efficient than the A.E.C. - Ricardo engine having smaller cylinders and a wider speed range. Since little allowance has been made for this in the estimated consumption, these estimates are very conservative. Hs{Lord Ernest Hives - Chair}/Ud. | ||