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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).
Description of the engine's oil rectifier, sump, and induction system with a diagram of the Wall oil Rectifier.

Identifier  ExFiles\Box 23\5\  Scan038
Date  16th December 1927 guessed
  
contd :-
-8-
feeds the spring shackles when the valve is opened by hand. Fig.V. is a diagrammatic view of the Wall oil Rectifier and is self-explanatory. A flow of exhaust gas is not definitely provided for; the rectifier bolts up to the rear exhaust manifold and a slot in the rectifier corresponds with a slot in the exhaust manifold.
The filter is made of a coarse sacking-like material, made concertina shape by the use of wire rings.

The engine sump contains three gallons of oil; is provided with transverse vertical splash plates to prevent oil surging, and also a sheet metal cover extending the whole length of the bottom half. A cylindrical shaped filter is used in the sump. The oil pump is the usual gear type of pump. An oil relief valve, easily adjustable, is fitted to the crankcase oil gallery; the surplus oil being delivered back to the sump. Numerous fins are cast in one with the sump to assist oil cooling.

INDUCTION SYSTEM.

A Duplex Zenith vertical carburetter is fitted; a diagrammatic sketch of the carb. is attached. An air cleaner is fitted to the carb., this consists of a sheet of fine wire gauze and a sheet of corrugated wire gauze wound cylindrically and bolted up to the carburetter air intakes. Fig.VI. illustrates the type

contd :-

Fig: V Diagram Labels:
Top: To Intake Suction
Top right: Diffuser
Right: Clean Oil To Sump
Right: Filter
Center: Exhaust Heated Chamber
Left: Baffle
Left: Surplus Oil From Camshaft
Bottom: Breather From Crank Case
  
  


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