Effect of Sound Intensity on Knock Ratings
310026
01/01/1931
- Event
- Content
- MEASURING knock-sound intensity by a microphone and vacuum-tube amplifying set is described in this paper. Widely varying fuels are compared with mixtures of normal heptane and iso-octane at knock intensities ranging from incipient knock to a knock severe enough to cause preignition. The conclusion is drawn that, for tests on the L-head Cooperative Fuel-Research knock-testing engine, the intensity of knock at which tests are made does not affect the knock ratings if a fuel-matching method is used.
- Pages
- 3
- Citation
- Huf, H., Sabina, J., and Hill, J., "Effect of Sound Intensity on Knock Ratings," SAE Technical Paper 310026, 1931, https://doi.org/10.4271/310026.