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).
Suggesting modifications to the 'running in' test procedure for the EAC 'V' series engine.
| Identifier | ExFiles\Box 69\4\ scan0274 | |
| Date | 1st February 1925 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. S E C R E T. EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}/ACL/LG6.2.25. UNIT ENGINE TEST - EAC 'V' SERIES. Re. Specification of Unit Engine Test EP{G. Eric Platford - Chief Quality Engineer}1/H20.1.25. We offer the following suggestions for the modification of these tests to suit the EAC. 'V' series engine. 'RUNNING IN' OF ENGINE. The total running we think ought to be increased to an equivalent distance of 200 miles instead of the 100 miles in the case of the 40/50 HP. This would be equivalent to 480,000 revs. We adopt the following method of 'running in' our engines and have found this to be quite satisfactory. 1 hr. light running at 1000 r.p.m. 1 hr. half load " " " 1 hr. 3/4 load " 1500 " 1 hr. full load " 2000 " The last, i.e., the full load test, could be split up into four periods of 15 mins. duration which will probably be more suitable for production testing because an oil cooler is not used and we employ one for our tests. During this 'running in' period, oil should be injected for cylinder lubrication. The best position for injection is where the starter carburetter is attached to the induction pipe because then each cylinder tends to get the same supply. Probably the most satisfactory way to supply this oil would be to disconnect the starter carburetter and in its place fit a small jet and tap connected with an oil tank, contd:- | ||