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Pulsation Effects on the Air Fuel Ratio of Carburetor Engines
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English
Abstract
A significant wavewise change of air fuel ratio in line with the engine speed having a long intake pipe was studied experimentally and theoretically. The results show the pulsewise change in fuel flow plays the dominant role in the wavewise change in the air fuel ratio. It is found that this pulsewise fluctuation of the fuel flow forms an oscillation wave with both the amplitude and frequency becoming larger according to the engine speed resulted by the phase change of the pulsation wave in the intake pipe according to the engine speed. A modified frequency ratio of gas vibration in the intake pipe to that of engine intake stroke is proposed to explain this pulsation effect on the fuel flow and an effective simulator for this phenomena is established.
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Citation
Tanaka, M., Sato, T., and Watanabe, K., "Pulsation Effects on the Air Fuel Ratio of Carburetor Engines," SAE Technical Paper 861241, 1986, https://doi.org/10.4271/861241.Also In
References
- Tanaka JSAE Journal 23 2 1969
- Asanuma Sawa JSME Bulletin 25-156 Aug. 1959 834 840
- Sawa Hayashi JSME Bullecin 42-363 Nov. 1976