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).
Ricardo's remarks on engine roughness caused by high compression and the challenges of altering combustion chamber design.
| Identifier | ExFiles\Box 42\4\ Scan066 | |
| Date | 24th February 1927 | |
| To CWB. from Hs.{Lord Ernest Hives - Chair} X3867 Hs{Lord Ernest Hives - Chair}5/LG24.2.27. x790 Replying to CWB4/GM23.2.27. We consider Ricardo's remarks on high compression causing roughness are perfectly logical. One would imagine that the rate of rise in pressure would effect roughness more than the peak pressure. Unfortunately the only means we have of altering the compression ratio is by raising the piston which, if anything, makes our combustion chamber a worse shape for detonation. We have not gone far enough with the alum. engine to make any definite statement as regards the altered combustion chamber on that engine. Hs.{Lord Ernest Hives - Chair} | ||