Dissertation/Thesis Abstract

Effects of Humid Air to NOX and PM Emissions for a Compressed Natural Gas Engine
by Lee, Yong Chul, M.S., California State University, Long Beach, 2018, 55; 10784445
Abstract (Summary)

This study was performed to investigate the effects of humid air on nitrogen oxide (NOx) and particulate matter (PM) emissions of a compressed natural gas (CNG) engine. A 50 horse-power, 4 cylinder, naturally aspirated CNG engine was used for this study at a research facility in the College of Engineering at California State University Long Beach. The experiments were carried out at different relative humidity levels of 30%, 45%, and 60% at different power outputs of 5 HP, 12.5 HP, 25 HP, and 37.5 HP. At each test condition, the NOx and PM emissions are collected and analyzed through a dilution tunnel, the Horiba gas analyzer, and a cyclone with Teflon air filters. For PM measurements, the Teflon filters are weighed using a micro-balance at University of California, Irvine’s biology lab, in prior and after running the experiments. Results show a decrease in NOx emission up to 91 percent and increase in PM emission by 7.4 mg with the increase in intake air humidity level.

Indexing (document details)
Advisor: Rahai, Hamid
Commitee: Sciortino, Antonella, Taherian, Shahab
School: California State University, Long Beach
Department: Mechanical and Aerospace Engineering
School Location: United States -- California
Source: MAI 58/01M(E), Masters Abstracts International
Source Type: DISSERTATION
Subjects: Mechanical engineering, Environmental engineering
Keywords:
Publication Number: 10784445
ISBN: 978-0-438-19625-4
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