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).
Test report on the failure of a Ph.III Cil Temperature Regulator under increasing oil pressure.
| Identifier | ExFiles\Box 131\1\ scan0184 | |
| Date | 16th March 1930 | |
| X1174 To E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} c. to Roy.{Sir Henry Royce} c. to Sft.{Mr Swift} Hs{Lord Ernest Hives - Chair}/Std.1/JM.{Mr Morley}16.3.30. Ph.III Cil Temperature Regulators. We have tested one of the latest type oil temperature regulators to Lec.4871 - T.87820 by subjecting it to increasing oil pressure until failure occurred. Failures occurred as follows :- | Pressure at which leakage occurred | Condition of test | Nature of failure | | :--- | :--- | :--- | | 150 | Oil at 130°C | Leakage through the bore of the tube due to the porosity of metal. | | 200 | Oil at Atmospheric temperature. | Leakage took place due to separation between the end cover plate and the tube. Same type of failure as experienced in the past. | At the conclusion of the test, the side plates of the cooler were severely bulged. Besides this pressure test, this type of oil temp. regulator has been run for a total of 9 hours on the test bed, of which approx. 2 1/4 hrs. was at speeds of 4000-4500 R.P.M. no leakage or bulging occurred. Conclusion. The latest type of oil temperature regulator to Lec.4871 is definitely the strongest of our designs tested so far. See previous reports on this subject. We are not of course able to say whether this regulator will be | ||