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).
Engine design considerations for oil circulation, exhaust pipes, and general accessibility.
| Identifier | ExFiles\Box 25\1\ Scan011 | |
| Date | 23th April 1930 | |
| 3. E3/N.23.4.30 Cont'd.{John DeLooze - Company Secretary} pumps it back into the circulation system. Oil Circulation System. To enable the engine to operate at continuous periods tilted at steep angles fore and aft for climbing or descending gradients up to 1 in 2, it is proposed to fit a dry oil sump and scavenger pump as shown in Lec.2796. At the same time this scheme takes care of the temperature of the oil for the external oil tank can be fitted with cooling ducts and placed somewhere in the draught from the fan or alternately an oil cooling radiator may be used. Exhaust Pipes. The condenser and cooling fan are arranged in such a position that the air draught blows over the exhaust side of the engine after leaving the fan, the fan cowling being provided with a bell mouth where possible to let down the speed of air as efficiently as possible before it passes through the engine house and exit louvres. The exhaust manifold is brought forward into the air draught for cooling purposes and also to allow of access to the engine. It can be provided with air cooling ribs if these are found to be necessary. General Accessibility of the Engine. It is assumed that a door will be provided on the driver's side of the engine for access to the carburetter, battery ignition, plugs, and oil relief valve unit. Inside of the engine house the space at the side of the engine has been definitely left unobstructed to allow of access to the sparking plugs, valve gears, dynamo, magneto and starter motor. To enable the valve tappet cover to be lifted for adjustments we require a trap door in the deck of the tank and we suggest that this door should be made large enough to admit of the operator standing upright in the space alongside of the engine. E.{Mr Elliott - Chief Engineer} | ||