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).
Method for measuring oil flow through engine bearings to diagnose an 'overoiler' car.
| Identifier | ExFiles\Box 178\1\ img149 | |
| Date | 19th May 1926 | |
| - 17 - Hs{Lord Ernest Hives - Chair}/ACL/T19.5.26. have the minimum (within the limits) clearance in the guides. The holes at the end of the inlet rockers are plugged to prevent excess oil pouring over the inlet valve. It may be found desirable at times, if a car is a bad "overoiler", to determine the amount of oil passing through the bearings. We have evolved a simple method:- METHOD OF MEASURING OIL FLOW THROUGH THE BEARINGS. --------------------------------------------- Briefly this method consists of drawing the oil from a tank, instead of the sump, and measuring that which flows out at the bottom of the crankcase with the auxiliary supplies such as to the gears and rockers put out of action. It can easily be carried out on the car with the engine running light but it is not advisable or even necessary to go above 2000 R.P.M. except when on a dynamometer. It is necessary to have the following parts which can be substituted for the actual parts in use on the car when the test is made. 1. Standard oil sump having a longer suction pipe which can be led to a tank. 2. Pressure release valve having the usual oil return to the crankcase stopped and an external return pipe fitted. 3. Sump cover with short large diameter pipe to drain the oil into the collecting tank. A sketch is appended shewing how the apparatus should contd. | ||