An optical investigation of combustion process of a direct high-pressure injection of natural gas

An optical investigation of combustion process of a direct high-pressure injection of natural gas More than 90% of worldwide cargo transportation is carried out by ships. Nowadays, a contradictory circumstance like tough exhaust emission regulations for ocean-going ships by International Maritime Organization (IMO) and deterioration in the quality of marine fuel forces some challenges. A change to another fuel, such as liquefied natural gas (LNG), is conceivable. To create ideas for such the new combustion system, it is essential to visualize the combustion process and find the actual problems. For that target, a world largest class Rapid Compression and Expansion Machine (RCEM with 200-mm-wide or 240-mm-diameter window) that holds under 20 MPa cylinder pressure has been designed and built by the authors. This RCEM is equipped with several electronically controlled fuel injection systems for both liquid fuel and gas fuel. Characteristics of diesel spray combustion and gas injection (GI) combustion can be analyzed using direct photography and some kinds of laser optical techniques. After one-shot burning of the fuel, the burnt gas is sent from RCEM to a gas analyzer and NOx, CO, CO2 and THC can be measured. In this paper, a fundamental difference of combustion process between diesel and GI is made clear. However, as GI combustion emits much higher NOx than the lean-burn, some measures like EGR is necessary for the IMO Tier 3 NOx regulation. The GI combustion under EGR atmosphere (lower oxygen %) is also visualized. Some data of GI combustion are obtained by above-mentioned experiments. However, the phenomena are too complicated. As the next task, to create and validate a calculation model is important to optimize the GI system. In this study, the three-dimensional CFD code, KIVA3V, combined with the software tool for solving complex chemical kinetics, SENKIN, was modified for GI combustion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Marine Science and Technology Springer Journals

An optical investigation of combustion process of a direct high-pressure injection of natural gas

Loading next page...
 
/lp/springer_journal/an-optical-investigation-of-combustion-process-of-a-direct-high-AV00mohzCf
Publisher
Springer Japan
Copyright
Copyright © 2016 by The Author(s)
Subject
Engineering; Automotive Engineering; Engineering Fluid Dynamics; Engineering Design; Offshore Engineering; Mechanical Engineering
ISSN
0948-4280
eISSN
1437-8213
D.O.I.
10.1007/s00773-016-0422-x
Publisher site
See Article on Publisher Site

Abstract

More than 90% of worldwide cargo transportation is carried out by ships. Nowadays, a contradictory circumstance like tough exhaust emission regulations for ocean-going ships by International Maritime Organization (IMO) and deterioration in the quality of marine fuel forces some challenges. A change to another fuel, such as liquefied natural gas (LNG), is conceivable. To create ideas for such the new combustion system, it is essential to visualize the combustion process and find the actual problems. For that target, a world largest class Rapid Compression and Expansion Machine (RCEM with 200-mm-wide or 240-mm-diameter window) that holds under 20 MPa cylinder pressure has been designed and built by the authors. This RCEM is equipped with several electronically controlled fuel injection systems for both liquid fuel and gas fuel. Characteristics of diesel spray combustion and gas injection (GI) combustion can be analyzed using direct photography and some kinds of laser optical techniques. After one-shot burning of the fuel, the burnt gas is sent from RCEM to a gas analyzer and NOx, CO, CO2 and THC can be measured. In this paper, a fundamental difference of combustion process between diesel and GI is made clear. However, as GI combustion emits much higher NOx than the lean-burn, some measures like EGR is necessary for the IMO Tier 3 NOx regulation. The GI combustion under EGR atmosphere (lower oxygen %) is also visualized. Some data of GI combustion are obtained by above-mentioned experiments. However, the phenomena are too complicated. As the next task, to create and validate a calculation model is important to optimize the GI system. In this study, the three-dimensional CFD code, KIVA3V, combined with the software tool for solving complex chemical kinetics, SENKIN, was modified for GI combustion.

Journal

Journal of Marine Science and TechnologySpringer Journals

Published: Dec 3, 2016

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off