The demonstration and usefulness of a Cambridge Exhaust Gas Analyser for engine testing.
| Identifier | ExFiles\Box 102\1\ scan0148 | |
| Date | 1st January 1934 guessed | |
| X5058 file INDUCTION DEVELOPMENT. THE CAMBRIDGE EXHAUST GAS ANALYSER. A demonstration of the above instrument conducted by a representative from the Cambridge Instrument Co. has been carried out on the test bed, with a standard 20/25 engine. Running open exhaust, the instrument was connected direct to an exhaust port. Owing to the fact that the instrument was only available for a short time, it was impossible to make any direct comparison against known data. All that can be said is, that the instrument did respond to variation of mixture strength, at throttled low speeds, and full throttle high speeds. Its usefulness for development on the test bed would be controlled by the degree of accuracy demanded for certain tests for which we have no tackle at present. For instance, this instrument could establish comparative figures from different cylinders in distribution, but the accuracy of these results would rest upon the dependability of the instrument. The difference between test bed and road conditions are such, that a carburetter requires a weaker jet setting for the road than is necessary on the test bed for weakest maintained max-power. Figures have never been established for these differences, and it would seem that this gas analyser would fulfill the purpose if it were deemed necessary. (Sgd.) C.T. Salt. | ||
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).