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Direct Injection Stratified Charge Engine by Impingement of Fuel Jet (OSKA)-Performance and Combustion Characteristics
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English
Abstract
A direct injection stratified charge engine using New Mixture Formation Technology (OSKA) has been developed.
Experiments on a single cylinder engine, with methanol and gasoline fuels showed the following results: 1) With methanol, the maximum IMEP was 1.3 MPa and the best indicated thermal efficiency was 46 %. 2) With gasoline, the maximum IMEP was 1.16 MPa and the best indicated thermal efficiency was 43 %.
Analysis of the cylinder pressure diagram showed the following results:
- 1)
High indicated thermal efficiency was observed by low time loss.
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2)
A relatively short combustion duration was observed even if the engine was operated with an overall lean fuel-air mixture in the part-load condition. This fact suggests that a stratified charge was attained.
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3)
From observation of the heat release rate,it will be predicted that combustion is characterized by flame propagation.
Authors
Citation
Kato, S., Onishi, S., and Kobayashi, S., "Direct Injection Stratified Charge Engine by Impingement of Fuel Jet (OSKA)-Performance and Combustion Characteristics," SAE Technical Paper 900608, 1990, https://doi.org/10.4271/900608.Also In
References
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