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).
Comparison of engine warm-up performance between a standard exhaust heating system and a water heating system.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan009 | |
| Date | 11th June 1928 guessed | |
| contd :- -2- thermometer which was so evident with the previous method. By thismethod we made a comparison of the heating up with the present standard exhaust heating system with the butterfly in the down pipe and the water system in which all the jacket water is circulated through the hot spot. No radiator was used so only the water in the cyl. jackets - 2 1/4 galls. - was circulated. The results shew that the std. exhaust system gives much quicker warming up than the water and we think this type of water heating system in which all the jacket water flows through the hot spot represents the best that can be obtained from water. These latest results it will be seen are the reverse of those previously submitted but we consider due to the improved method of making the experiment and the more consistent the results have been, that this is a true graphical representation of the rate of warming up the induction pipe with each system as outlined. We are now making a test to compare the normal water heated system - in which only part of the water is circulated through the hot spot - with the two shewn on our curves and hope to be able to supply this on Monday. Hs{Lord Ernest Hives - Chair}/A.C.Lovesey. These results are now more consistent with the results which are obtained with the car on the road. Hs.{Lord Ernest Hives - Chair} | ||