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 tests involving heating elements, blower performance, new fuel nozzles, and an oil scavenging issue.
| Identifier | WestWitteringFiles\U\January1930-April1930\ Scan106 | |
| Date | 28th February 1930 | |
| -2- HS{Lord Ernest Hives - Chair}/ACL.28.2.30.Contd. We accomplished by fitting up some electrical heating elements - 4 one kilo Watt elements - in the capacity tank above the blower. We have to reach an inlet temperature to the cylinder of 120°C before starting and under the conditions of the 30 mins. test we could not allow the temperature to fall below 130 to 125°C. before erratic firing resulted. A further test was made without the blower but under these conditions we could not keep our air intake temperature above 120°C, which resulted in the engine being very erratical. We have now received the Bosch fuel nozzles which have been designed for this engine and are ready to make a test with them. Trouble was experienced with oil building up in the crankchamber and not returning to the supply tank. This was overcome by removing the spring loaded breather. With the breather in position there was a depression in the crank-chamber which appeared sufficient to oppose the action of the scavenger pump. HS{Lord Ernest Hives - Chair}/ACL. | ||