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).
'Heat to Oil' tests carried out on a Phantom II, No. 7 engine.
Identifier | ExFiles\Box 144\3\ scan0024 | |
Date | 21th April 1933 | |
X986 Files. ---- 21.4.33. X4693. x. 7190 x. 986. REPORT ON "HEAT TO OIL" TESTS CARRIED OUT ON PHANTOM II. No.7. The engine used for these tests was P.II. No.7 E.79351, Lec.2736 standard crankshaft type, 2.375 crankpins 2.625 journals. Oil pipes were fitted so that the pump took its supply from an external tank beneath the engine and pumped it through the cooler to the engine - bearings etc, whereas it ran back through crankcase drain hole into tank. Thermometers were fitted, one in inlet pipe to oil pressure relief valves, and a second one in drain hole, so that thermometer bulb was in issuing stream of hot oil. The cooler was adjusted so that oil inlet and outlet temperatures, as recorded on these thermometers, remained constant for 10 mins. before readings were taken. Oil flow was determined by measuring time necessary to fill the largest convenient measure, viz. 1/4 gallon, from oil stream. Tests were run at two speeds - 3000 R.P.M. and 2500 R.P.M. respectively - full throttle being used in both cases. Three sets of readings were taken at each speed to check accuracy (10 minute intervals). Results are shewn below :- Constants used:- S.H. of oil - 0.5 B.Th.U/lb. Wt. of 1 gall oil - 9.15 lbs. Results next sheet. | ||