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Intercooling Effects of Methanol on Turbocharged Diesel Engine Performance and Exhaust Emissions
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Abstract
From the viewpoint of utilizing methanol fuel in an automotive turbocharged direct-injection diesel engine, an intercooling system supplying liquid methanol has been devised and its effects on engine performance and exhaust gas emissions have been investigated.
With an electronically controlled injector in this system, methanol as a supplementary fuel to diesel fuel can be injected into the intake pipe in order to intercool a hot air charge compressed by the turbocharger.
It has been confirmed that especially at heavy load conditions, methanol-intercooling can yield a higher thermal efficiency, and lower NOx and smoke emissions simultaneously, compared with three other cases without using methanol: natural aspiration and the cases with and without an ordinary intercooler. However, methanol fueling must be avoided at lower loads since sacrifices in efficiency and hydrocarbon emissions are inevitably involved.
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Citation
Saito, T., Daisho, Y., Aoki, Y., and Kawase, N., "Intercooling Effects of Methanol on Turbocharged Diesel Engine Performance and Exhaust Emissions," SAE Technical Paper 841160, 1984, https://doi.org/10.4271/841160.Also In
References
- Turbocharged Diesel and Spark Ignition Engines Progress in Technology Series No. 23 SAE 1981
- Turbocharger Performance and Applicaion SP-514, International Congress and Exposition SAE 1982
- Proceedings of the 4th International Symposium on Alcohol Fuels Technology Brasil 5-8 Oct. 1980
- Ullman T. L. Hare C. T. Baines T. M. “Emissions from Direct-Injected Heavy-Duty Methanol-Fueled Engines (One Dual-Injection and One Spark-Ignited) and a Comparable Diesel Engine,” SAE Paper 820966 1982
- Alternative Fuels for Spark Ignition and Diesel Engines SP-542, International Congress and Exposition SAE 1983
- Daisho Y. Saito T. “Nitric Oxide Formation in a Direct-Injection Diesel Engine, Part 2,” Bulletin of JSAE No. 7 1976