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 a steam-based engine cooling system using a gear pump, including an illustrative diagram.
| Identifier | ExFiles\Box 178\1\ img040 | |
| Date | 15th February 1926 guessed | |
| - 24 - pump in place of the centrifugal type. The principle is this:- Boiling water is circulated round the engine cylinders and naturally in the process steam is generated. The steam is led into the radiator which, as will be seen from the diagram, does not contain water, and there it is condensed and runs down into the bottom tank where it is again circulated by the gear pump. [Diagram Text] BOILING WATER & STEAM BEING RETURNED TO THE RADIATOR BOTTOM TANK RELIEF VALVE BOILING WATER SURROUNDING CYL'S GEAR PUMP STEAM RISING UP THE RADIATOR & CONDENSING WATER RETURNED TO THE BOTTOM INSTEAD OF THE TOP OF THE RADIATOR. ALMOST BOILING WATER BEING CIRCULATED BY THE PUMP. All the heat imparted to the water jackets is employed in generating steam and all the cooling capacity of the radiator is utilised in condensing the steam and turning it back into water. When only a small quantity of steam is generated, it does not fill the radiator but is condensed before it reaches the top, this occurs on partial throttle work. When the outside atmospheric temperature is high and the car is working at full throttle, the radiator is full of steam. At the point where the car would normally boil, i.e. when the radiator can no contd. | ||