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Bulletin of the Marine Engineering Society in Japan最新文献

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Influence of Water Content Ratio on Combustion Fluctuation of Diesel Engine Using Emulsified Fuel 含水率对乳化柴油发动机燃烧波动的影响
Bulletin of the Marine Engineering Society in Japan Pub Date : 1998-02-15 DOI: 10.5988/jime1966.32.433
Yasufumi Yoshimoto, T. Kuramoto, Ziye Li, M. Tsukahara
{"title":"Influence of Water Content Ratio on Combustion Fluctuation of Diesel Engine Using Emulsified Fuel","authors":"Yasufumi Yoshimoto, T. Kuramoto, Ziye Li, M. Tsukahara","doi":"10.5988/jime1966.32.433","DOIUrl":"https://doi.org/10.5988/jime1966.32.433","url":null,"abstract":"The application of water-in-oil type emu1sified fuel to marine diesel engines is one of the attractive methods from a viewpoint of NOx reduction. Considering with actual application, it must be known how the water content and environment temperature influence the stability of combustion and engine performance. However, the combustion stability of diesel engine operated with emulsified fuel have not been reported. Therefore, the authors examined the influences of water content ratio (water to gas oil ratio: Gw = 01. 19 mass) and intake air temperature (25-6C ) on the stability of combustion. As a result, the sufficient combustion stability was obtained when the engine was operated under the conditions with higher load ratios than 2/4 (BMEP = 0.26 Mpa) and lower water ratios than Gw = 0.51.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128988780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Measurements of Atmospheric Concentration of NO_x and SO_2 in the Sea Areas of Osaka Bay and Seto-Inlands Sea 大阪湾和濑户内海海域大气NO_x和SO_2浓度的测定
Bulletin of the Marine Engineering Society in Japan Pub Date : 1997-10-01 DOI: 10.5988/jime1966.31.748
E. Nishikawa, Teruo Matsumoto, Kazunori Okita
{"title":"Measurements of Atmospheric Concentration of NO_x and SO_2 in the Sea Areas of Osaka Bay and Seto-Inlands Sea","authors":"E. Nishikawa, Teruo Matsumoto, Kazunori Okita","doi":"10.5988/jime1966.31.748","DOIUrl":"https://doi.org/10.5988/jime1966.31.748","url":null,"abstract":"Measurements of atmospheric concentration of NOx and SO2 were carried out by using the chemiluminescence method of NOx and the ultraviolet-fluorescence method of SO2, and by using the training ship Fukae-maru of Kobe University of Mercantile Marine in the sea areas of 0saka Bay and Seto-inlands Sea. Measurement results make clear the folIowings. ( 1) The exhausts from ships have obvious impacts on NOx and SO2 concentration in the narrow water areas and/or in the ports where marine traffic is congested. (2) The atmosphere of the north-east area of Osaka Bay is highly polluted in some weather conditions such that the wind due to large scale pressure systems is weak and the land-and-sea breeze is prevailing.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128292553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Behavior of Band Spectra of Diesel Combustion Flames in Infrared Ranges 柴油燃烧火焰红外波段光谱特性研究
Bulletin of the Marine Engineering Society in Japan Pub Date : 1997-02-15 DOI: 10.5988/jime1966.31.239
K. Funatsu, K. Nagase
{"title":"Behavior of Band Spectra of Diesel Combustion Flames in Infrared Ranges","authors":"K. Funatsu, K. Nagase","doi":"10.5988/jime1966.31.239","DOIUrl":"https://doi.org/10.5988/jime1966.31.239","url":null,"abstract":"Band spectra in infrared ranges in diesel combustion flames contain various information on intermediate or end products in the combustion process. The authors inserted an optica1 fiber holder into the diesel combustion chamber of DI engine, and investigated flame spectra under various conditions of injection quantities and boost pressures. Further, they investigated flame spectra and flame temperature for various injection quantities and ignition timings, and made partially clear the behavior of band spectra in infrared ranges, presumably emitted from H2O and other unidentified substances. Additionally, they confirmed existence of some unspecified absorption spectra.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126679235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
As Improvement on Performance in Marine Diesel Engines by Use of Electronic Control Systems 电子控制系统对船用柴油机性能的改善
Bulletin of the Marine Engineering Society in Japan Pub Date : 1997-02-15 DOI: 10.5988/jime1966.31.35
Shinji Baba, T. Asada, Satoshi Suzuki, T. Kawasaki, Toshiaki Hada, K. Sawada
{"title":"As Improvement on Performance in Marine Diesel Engines by Use of Electronic Control Systems","authors":"Shinji Baba, T. Asada, Satoshi Suzuki, T. Kawasaki, Toshiaki Hada, K. Sawada","doi":"10.5988/jime1966.31.35","DOIUrl":"https://doi.org/10.5988/jime1966.31.35","url":null,"abstract":"In recent years, electronic control systems have been widely used for the engine. The authors developed a new system using hydraulic-actuated mechanisms, and applied to the fuel injection control and the drive control of he suction valve/exhaust valve of the medium-speed four-stroke test engine. Then, it was applied to the fuel injection control system and the exhaust valve drive system of the largebore, two-stroke test engine, and it was confirmed that it is possible to achieve the same or higher engine performance as compared to the case with conventional cam system. Moreover, combining \"Electronically Controlled Exhaust Valve system'' and ‘‘Scavenging Controlled Valve system\" as a mechanism of a new concept, the authors were able to control freely the scavenging air and exhaust timing of engine. As a result, the effective work of the engine was increased, and the specific fuel oil consumption was improved by 8g/kwh.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130225009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering Method of Sound Power Determination for Marine Engines 船用发动机声功率测定的工程方法
Bulletin of the Marine Engineering Society in Japan Pub Date : 1997-02-15 DOI: 10.5988/JIME1966.31.335
M. Kamata, Hideo Ikeda, N. Baba
{"title":"Engineering Method of Sound Power Determination for Marine Engines","authors":"M. Kamata, Hideo Ikeda, N. Baba","doi":"10.5988/JIME1966.31.335","DOIUrl":"https://doi.org/10.5988/JIME1966.31.335","url":null,"abstract":"Sound power level evaluation methods for marine engines are investigated. Sound pressure based methods are discussed in this paper. In the highly reverbrant environment such as at engine room in a ship, precision of the sound pressure based methods tends to get worse.Through minute investigation on 10 test results, the authors introduce a new approach for the sound power evaluation in which mean level of PI index is used for environment correction factor. This approach, named the hybrid method, has both precision and practicality.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124758137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Studies on the Characteristics of the Initial Running-in of the Piston Ring for Low-Speed Marine Diesel Engines 船用低速柴油机活塞环初磨合特性研究
Bulletin of the Marine Engineering Society in Japan Pub Date : 1997-02-15 DOI: 10.5988/JIME1966.31.181
S. Mitsutake, F. Takahashi
{"title":"Studies on the Characteristics of the Initial Running-in of the Piston Ring for Low-Speed Marine Diesel Engines","authors":"S. Mitsutake, F. Takahashi","doi":"10.5988/JIME1966.31.181","DOIUrl":"https://doi.org/10.5988/JIME1966.31.181","url":null,"abstract":"Low-speed marine diesel engines are operated under severe lubricating conditions with higher output, and their lubrication is an important factor for their successful operation. In order to raise the reliability of the ring-liner lubrication of marine diesel engines, authors conducted the studies on the initial running-in methods of the ring in the stage of shop trial by measuring the oil film electrical resistance between the ring and the liner.This paper describes the feature and its mechanism of the initial running-in of the top ring, and the effective running-in method by the variation of the load to obtain good lubricating condition of the top ring during a shorter time. And it also describes the applicable region of the evaluation method of the ring-liner lubrication by the electric method.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"15 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132285371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Formative Diagnosis of NO & Soot by LIF & LLS Methods of YAG Laser YAG激光LIF和LLS法诊断NO和烟灰的形成
Bulletin of the Marine Engineering Society in Japan Pub Date : 1997-02-15 DOI: 10.5988/JIME1966.31.18
O. Nishida, H. Fujita, W. Harano, T. Okamoto, Hirofumi Yamamoto, Ikuo Ishizuka
{"title":"Formative Diagnosis of NO & Soot by LIF & LLS Methods of YAG Laser","authors":"O. Nishida, H. Fujita, W. Harano, T. Okamoto, Hirofumi Yamamoto, Ikuo Ishizuka","doi":"10.5988/JIME1966.31.18","DOIUrl":"https://doi.org/10.5988/JIME1966.31.18","url":null,"abstract":"An experimental study was made of two-dimensional visualization on soot particles and NO in steady and unsteady flames by laser sheet. The soot volume fraction are obtained from the scattered light intensity of the soot by LLS (laser-light scattered) method, since the relation between the light intensity and the soot volume fraction by light attenuation method is determined quantitatively. And NO distribution was measured by planar laser-induced fluorescence (LIF) method. It was found that the soot volume fraction lay within the limits of 10-7 and 10-5 (cm3/cm3), and had maxima at the inside of ribbon flame front. The reaction of soot decomposition became actively with the eddy break down over the downstream. The distribution NO and flame temperature showed a similar tendency. LIF intensity of NO agreed relatively with the NO concentration of the sampling gas measured by chemiluminescence method.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123499080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prevention of Attachment of Marine Organisms on Propeller by Electrolytic Current 电解电流防止海洋生物在螺旋桨上的附着
Bulletin of the Marine Engineering Society in Japan Pub Date : 1996-02-15 DOI: 10.5988/JIME1966.30.453
H. Tanaka, H. Suzuki
{"title":"Prevention of Attachment of Marine Organisms on Propeller by Electrolytic Current","authors":"H. Tanaka, H. Suzuki","doi":"10.5988/JIME1966.30.453","DOIUrl":"https://doi.org/10.5988/JIME1966.30.453","url":null,"abstract":"Many marine organisms attach to the hull and propeller surface of anchored ships. This increases the frictional resistance of the propeller and lowers its rotational frequency. Anti-fouling hull coatings prevent the attachment of fouling organisms, however they contain poisonous compounds such as organic tin and cuprous oxides. Since marine organisms cannot attach themselves to a propeller during a voyage, a safe, easy and effective method to prevent attachment during anchorage is desirable. Some propeller coatings which do not contain poisonous compounds have been examined and developed. However, the coatings do not adhere perfectly. In a preliminary experiment, it was observed that marine organisms were attached everywhere on the test plate except the scratching part. The electrolytic current therefore is feasible to prevent the attachment of marine organisms to the propeller and the technique does not pollute the marine environment.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121006498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SIMULATION OF NOX REDUCTION BY CONSOLIDATED CONTROL OF MAIN ENGINE AND CPP 主机与CPP联合控制下的氮氧化物减排模拟
Bulletin of the Marine Engineering Society in Japan Pub Date : 1996-02-15 DOI: 10.5988/JIME1966.30.434
Hidekazu Fukuba, S. Morita, Takayoshi Maeda
{"title":"SIMULATION OF NOX REDUCTION BY CONSOLIDATED CONTROL OF MAIN ENGINE AND CPP","authors":"Hidekazu Fukuba, S. Morita, Takayoshi Maeda","doi":"10.5988/JIME1966.30.434","DOIUrl":"https://doi.org/10.5988/JIME1966.30.434","url":null,"abstract":"The introduction of controllable pitch propellers (CPP) has increased ship manoeuvrability and the capability of using the shaft generator. The conventional control algorithms of these CPP systems are comparatively simple. However, the CPP system has essentially the capability to control two freedoms because there are two input parameters of a propeller pitch angle (P) and a regulator handle position (R) in the system. One freedom must be used for controlling the ship speed which is the most important controlled value for vehicles. Another freedom should be utilized positively to improve or optimize performance such as fuel consumption ratio (be) and NOx emission. This utilization is accomplished by controlling P and R simultaneously which is called consolidated control. In the study, \"be\" or \"be\" plus NOx was adopted as the performance index of the utilization. There are two types of consolidated control: on-line and off-line. This study focuses on the on-line consolidated control which was investigated by simulation.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127502831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
VIBRATION ANALYSIS OF MAIN ENGINE SHAFT SYSTEM BY BUILDING BLOCK APPROACH 用积木法分析主机轴系振动
Bulletin of the Marine Engineering Society in Japan Pub Date : 1995-10-01 DOI: 10.5988/JIME1966.29.736
T. Hara, T. Furukawa, Katsuhiko Shoda
{"title":"VIBRATION ANALYSIS OF MAIN ENGINE SHAFT SYSTEM BY BUILDING BLOCK APPROACH","authors":"T. Hara, T. Furukawa, Katsuhiko Shoda","doi":"10.5988/JIME1966.29.736","DOIUrl":"https://doi.org/10.5988/JIME1966.29.736","url":null,"abstract":"In recent years, new type main engines which have long stroke slender shafts have appeared. Because of the softness of the new engine shaft system, torsional, axial and bending vibrations are coupled together, and the vibrations are complicated and influenced to the vibrations of the engine room and the ship hull. A vibration analysis has been developed by using the Building Block Approach, which has some merit for the countermeasure of vibration reduction, and confirmed the accuracy compared with actual ship measurement data.","PeriodicalId":256641,"journal":{"name":"Bulletin of the Marine Engineering Society in Japan","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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