Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas
This paper describes the results of a combination of EGR and supercharging applied to a diesel dual fuel (DDF) engine using natural gas (CNG) introduced from an intake pipe. The oxygen concentration in the intake charge were varied from 21% (without EGR) to 17% (26% EGR) with a cooled EGR technique....
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2018-10-01
|
| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/84/867/84_18-00219/_pdf/-char/en |
| _version_ | 1797989123875667968 |
|---|---|
| author | Yasufumi YOSHIMOTO Eiji KINOSHITA Takeshi OHTAKA |
| author_facet | Yasufumi YOSHIMOTO Eiji KINOSHITA Takeshi OHTAKA |
| author_sort | Yasufumi YOSHIMOTO |
| collection | DOAJ |
| description | This paper describes the results of a combination of EGR and supercharging applied to a diesel dual fuel (DDF) engine using natural gas (CNG) introduced from an intake pipe. The oxygen concentration in the intake charge were varied from 21% (without EGR) to 17% (26% EGR) with a cooled EGR technique. The boost pressures were set at two conditions, 100 kPa (naturally aspirated operation) and 120 kPa (supercharged operation) with a Roots blower supercharger driven by an inverter controlled motor. The influence of combining EGR and supercharging on the engine performance, combustion characteristics, and emissions were investigated with coconut oil methyl ester (CME) and gas oil under ordinary diesel and DDF operation modes. The results showed that the trade-off relation between the NOx and smoke emissions under the DDF operation combined with EGR and supercharging improved remarkably while also maintaining a relatively high brake thermal efficiency. Regardless of the engine operation mode, both the brake thermal efficiency and smoke emissions with the CME with supercharging improved more than with gas oil operation over the tested EGR regions. |
| first_indexed | 2024-04-11T08:15:15Z |
| format | Article |
| id | doaj.art-d2fff1aa0c494c3a9e0c84b427e5e237 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T08:15:15Z |
| publishDate | 2018-10-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-d2fff1aa0c494c3a9e0c84b427e5e2372022-12-22T04:35:11ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612018-10-018486718-0021918-0021910.1299/transjsme.18-00219transjsmeEffects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gasYasufumi YOSHIMOTO0Eiji KINOSHITA1Takeshi OHTAKA2Department of Engineering, Niigata Institute of TechnologyDepartment of Mechanical Engineering, Kagoshima UniversityDepartment of Mechanical Engineering, Kagoshima UniversityThis paper describes the results of a combination of EGR and supercharging applied to a diesel dual fuel (DDF) engine using natural gas (CNG) introduced from an intake pipe. The oxygen concentration in the intake charge were varied from 21% (without EGR) to 17% (26% EGR) with a cooled EGR technique. The boost pressures were set at two conditions, 100 kPa (naturally aspirated operation) and 120 kPa (supercharged operation) with a Roots blower supercharger driven by an inverter controlled motor. The influence of combining EGR and supercharging on the engine performance, combustion characteristics, and emissions were investigated with coconut oil methyl ester (CME) and gas oil under ordinary diesel and DDF operation modes. The results showed that the trade-off relation between the NOx and smoke emissions under the DDF operation combined with EGR and supercharging improved remarkably while also maintaining a relatively high brake thermal efficiency. Regardless of the engine operation mode, both the brake thermal efficiency and smoke emissions with the CME with supercharging improved more than with gas oil operation over the tested EGR regions.https://www.jstage.jst.go.jp/article/transjsme/84/867/84_18-00219/_pdf/-char/endiesel enginealternative energydual fuelnatural gasegrsuperchargingcoconut oil methyl esterengine performanceexhaust emissions |
| spellingShingle | Yasufumi YOSHIMOTO Eiji KINOSHITA Takeshi OHTAKA Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas Nihon Kikai Gakkai ronbunshu diesel engine alternative energy dual fuel natural gas egr supercharging coconut oil methyl ester engine performance exhaust emissions |
| title | Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas |
| title_full | Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas |
| title_fullStr | Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas |
| title_full_unstemmed | Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas |
| title_short | Effects of combining EGR and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas |
| title_sort | effects of combining egr and supercharging on the combustion characteristics of a diesel dual fuel engine with induced natural gas |
| topic | diesel engine alternative energy dual fuel natural gas egr supercharging coconut oil methyl ester engine performance exhaust emissions |
| url | https://www.jstage.jst.go.jp/article/transjsme/84/867/84_18-00219/_pdf/-char/en |
| work_keys_str_mv | AT yasufumiyoshimoto effectsofcombiningegrandsuperchargingonthecombustioncharacteristicsofadieseldualfuelenginewithinducednaturalgas AT eijikinoshita effectsofcombiningegrandsuperchargingonthecombustioncharacteristicsofadieseldualfuelenginewithinducednaturalgas AT takeshiohtaka effectsofcombiningegrandsuperchargingonthecombustioncharacteristicsofadieseldualfuelenginewithinducednaturalgas |