The Effect of Water Injection on a Naturally Aspirated Spark-Ignited Engine
Woojae Kim,
Jongwon Chung,
Junghyun Kim
et al.
Abstract:Water injection (WI) is a well-known technique to mitigate knocking phenomena, reducing the in-cylinder gas temperature with a high heat of vaporization and specific heat of water. In this study, the effect of WI directly into the cylinder on fuel efficiency was investigated using a 2.0 L naturally aspirated (NA), four-cylinder, port fuel injection (PFI)-spark-ignited (SI) engine. Spray visualization of water injection by a commercial gasoline direct-injection (GDI) injector was performed to elucidate the wate… Show more
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