Journal
ENERGY REPORTS
Volume 7, Issue -, Pages 374-379Publisher
ELSEVIER
DOI: 10.1016/j.egyr.2021.07.113
Keywords
Port water injection; Side valve engine; Spark ignition engine; Internal combustion engine; Engine cycle
Categories
Funding
- MEtRICs - through FCT [UIDB/04077/2020]
- Romanian Executive Agency for Higher Education, Research, Development, and Innovation Funding - UEFISCDI [PN-III-P4-ID-PCE-2020-0008]
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Water injection in internal combustion engines is primarily used for additional cooling and knock suppression, with potential for enhancing engine performance. Studies have focused on maximum load performance, but results for water injection at medium and low loads are inconsistent. This study monitored the effects of water injection at medium loads.
Water injection in internal combustion engines is mainly used for additional cooling of the combustion chamber and knock suppression. The main advantages of the water injection are the potential for the enhancement of the performance of the engine. Studies conducted so far have aimed to track engine performance at maximum load and fuel consumption (brake-specific fuel consumption BSFC). Specialized literature is less consistent as regards to the injection of water at medium and low loads. This work monitors the effects of water injection at medium loads and the evolution processes of the four-strokes in the engine with and without water injection. A side-valve, air cooled natural aspirated engine with water and fuel injections in the intake manifold was used for this study. The work during expansion was increased, but this trend was reversed by the higher loads required during intake, compression and exhaust strokes, leading to a reduction in the indicated efficiency when water was injected. (C) 2021 The Author(s). Published by Elsevier Ltd.
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