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).
Test results for a 40/50 engine, detailing the effect of throttle temperature on liquid petrol collection and horsepower.
| Identifier | ExFiles\Box 50\3\ Scan184 | |
| Date | 1st September 1921 guessed | |
| Tests taken on 40/50 engine on test. Engine fitted with exhaust heated throttle and collectors in each cylinder induction pipe branch with pipes to drain all liquid petrol into a glass flask. Standard 2" induction pipe. Full 20% paraffin mixture. Engine run at 500 revs. full throttle. | Temp. of throttle. | Time taken to collect 2 ozs. of liquid pet: | Consumption pts. per hr. | H.P. | |--------------------|------------------------------------------------|--------------------------|--------| | 140°C | Nil. slight moisture. | 25 | 22 | | 130°C | 30 mins. | 25 | 22.75 | | 122°C | 18¾ " | 25 | 23 | | 110°C | 6½ " | 25 | 23.12 | | 100°C | 5 " | 25 | 23.3 | | 90°C | 3¾ " | 25 | 23.4 | | 80°C | 2½ " | 25 | 23.6 | | 70°C | 2 " | 25 | 23.75 | | 60°C | 1¾ " | 25 | 23.75 | | 50°C | 1½ " | 25 | 23.75 | | 40°C | 1¼ " | 25 | 23.12 | | 25°C | 50 secs. | 25 | 22.0 | | 18°C | 45 " | 25 | 21.4 | Same conditions as above without collector rings in induction pipe branches. | 20°C | 8¼ mins. | 25 | 21.0 | |-------|------------------|----|--------| | 60°C | 4 " | 25 | 23.5 | | 95°C | 16 " | 25 | 23.5 | | 120°C | slight moisture. | 25 | 23.75 | | 130°C | dry | 25 | 23.75 | | ||