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).
Supercharged car design, blower positioning, and a comparison between 'Peregrine' and 'Bensport' engines.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page049 | |
| Date | 19th July 1932 | |
| -2- Hs.{Lord Ernest Hives - Chair}2/WI.19.7.32. Cont'd.{John DeLooze - Company Secretary} produce a supercharged car which will take a covered body and have reasonable silence we should have achieved something which so far has not been done and should attract a large number of people. Usually, it costs more money to obtain silence but in this case it will be cheaper. From our experience so far we consider the front position is the best position for the blower (1) because it will be less noisy, (2) because it will have a better chance of cooling it (we think this most important). With the side position we are going to have very high temperatures in our induction pipe and this will mean that our tendency for detonation will be increased. The final power output of this engine will be limited by what fuel we can use and what degree of detonation we can tolerate. The tests so far show that with the front position we can obtain good slow running and a reasonably good acceleration ( we are not however prepared to be positive on the latter point because it is very difficult to judge this itself on the road). We believe the designs for the blower on the front end of the 'Peregrine' engine are practically complete, therefore we suggest that we make up a unit like this and try it against the 'Bensport' engine and judge them on results. The reason we raise these points is because we are certain that as soon as we have delivered a few 'Bensport' cars the whole of our attention will be given to making them more silent. There is quite a wide selection of supercharged cars which are relatively in-expensive. It is certain we shall want more money for our car, and therefore we have got to make it attractive. Hs.{Lord Ernest Hives - Chair} | ||