Description of the operation of thermostatic radiator shutters and hood ventilators.
| Identifier | ExFiles\Box 119\3\ scan0203 | |
| Date | 27th April 1934 guessed | |
| X1085 THERMOSTATIC RADIATOR SHUTTERS AND HOOD VENTILATORS ------------------------- After becoming heated to the most efficient operating point, the water in the cooling system is maintained at an even temperature by means of vertical shutters located in front of the radiator. The shutters are controlled by a thermostat which is built into the radiator and connected directly to the shutters. The construction of the shutters is such that they operate from the center, the shutters on right hand side opening to the right. This arrangement insures an equal supply of air to each cylinder block. The hood ventilators are opened and closed automatically by thermostats, one on each side of the hood. The action of the thermostats is controlled by the air temperature under the hood. With this system the engine "warms up" quickly, as no cold air is drawn through the radiator and over the engine into the carburettor until the engine has reached a normal temperature. Warm air is thus provided for satisfactory carburation in cold weather. The operation of the thermostat and shutters is entirely automatic. The radiator shutters are fully open when the water temperature reaches 160 degrees, the shutters close when the water temperature reaches 135 degrees. When the air temperature under the hood reaches 110 degrees the hood ventilators are fully open. They close when the air temperature drops below 90 degrees. Thus the engine is automatically maintained at the most efficient operating temperature, regardless of weather conditions. ------------------------- | ||
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).