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).
Preventing water boiling in a vehicle's cooling system by running it under pressure.
| Identifier | WestWitteringFiles\K\September1923\ Scan44 | |
| Date | 14th September 1923 | |
| R.R. 403 (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} ORIGINAL EXPERIMENTAL REPORT. COPIES TO: (ROU) BJ. WOR.{Arthur Wormald - General Works Manager} (Sy) (E) (Da{Bernard Day - Chassis Design}) EP.{G. Eric Platford - Chief Quality Engineer} / PN.{Mr Northey} (OY) (PS) Expl. No. X. 766 X. 3456 REF. Hsl/LG14.9.23. OBJECT OF TEST. To provide means to prevent water boiling so readily. TESTER. A.{Mr Adams} C. Lovesey. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} W. Hancock. CONDITIONS. Tests carried out on 40/50 HP. Test Bench. Tests carried out on the road on 40/50 HP. car SUMMARY OF TEST. At Rg{Mr Rowledge}'s suggestion we have carried out tests with running the cooling system under pressure. We believe this scheme is being used in U.S.A. for water-cooled aero engines. We have considered using 6 lbs. pressure which would put up the boiling point from 100°C to 110°C. With 6 lbs. pressure there is no noticeable bulging of the flat surfaces on the radiator - at 10 lbs. pressure there is. The disadvantages we have noted with this scheme are :- (1) On the 40/50 HP. there is an increased tendency for detonation We do not consider this very serious because we advise running on a lower gear with engine throttled. (2) All rubber connections and joints must be tight to prevent contd:- | ||