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A Study on Accomplishing Lean Combustion by Multistage Pulse Discharge Ignition Using an Optically Accessible Engine
Technical Paper
2018-32-0007
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Lean burn technology has a problem of greater combustion fluctuation due to unstable initial flame formation and slow combustion. It is generally known that generating a flow field in the cylinder is effective for reducing combustion fluctuation and shortening the combustion period. In this study, we investigated the influence of the discharge condition and in-cylinder swirl flow on initial flame formation and ignition performance between conventional spark ignition (SI) and multistage pulse discharge (MSPD) ignition. Visualized photographs were obtained near the spark plug with a high-speed camera in an optically accessible engine. In-cylinder pressure analysis was also performed in order to explicate the combustion phenomena. The results revealed that ignition performance of both SI and MSPD was improved under a swirl flow condition in the cylinder and that combustion fluctuation was effectively reduced. Under the generation of in-cylinder swirl flow, the effect on reducing combustion fluctuation was greater with MSPD than with SI, and more stable combustion was obtained.
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Abe, Y., Iimura, M., Furusho, T., Takeda, K. et al., "A Study on Accomplishing Lean Combustion by Multistage Pulse Discharge Ignition Using an Optically Accessible Engine," SAE Technical Paper 2018-32-0007, 2018, https://doi.org/10.4271/2018-32-0007.Data Sets - Support Documents
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References
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