A Study of Newly Developed HCCI Engine With Wide Operating Range Equipped With Blowdown Supercharging System
To extend the operating range of a gasoline HCCI engine, the blowdown supercharging (BDSC) system and the EGR guide were developed and experimentally examined. The concepts of these techniques are to obtain a large amount of dilution gas and to generate a strong in-cylinder thermal stratification wi...
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| Veröffentlicht in: | SAE International journal of engines 2012-05, Vol.5 (2), p.51-66, Article 2011-01-1766 |
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| container_title | SAE International journal of engines |
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| creator | Kuboyama, Tatsuya Moriyoshi, Yasuo Hatamura, Koichi Takanashi, Junichi Urata, Yasuhiro Yamada, Toshio |
| description | To extend the operating range of a gasoline HCCI engine, the blowdown supercharging (BDSC) system and the EGR guide were developed and experimentally examined. The concepts of these techniques are to obtain a large amount of dilution gas and to generate a strong in-cylinder thermal stratification without an external supercharger for extending the upper load limit of HCCI operation whilst keeping dP/dθmaxand NOₓ emissions low. Also, to attain stable HCCI operation using the BDSC system with wide operating conditions, the valve actuation strategy in which the amount of dilution gas is smaller at lower load and larger at higher load was proposed. Additionally to achieve multi-cylinder HCCI operation with wide operating range, the secondary air injection system was developed to reduce cylinder-to-cylinder variation in ignition timing. As a result, the acceptable HCCI operation could be achieved with wide operating range, from IMEP of 135 kPa to 580 kPa. Compared to conventional SI operation, BSFC was improved by 14 % ∼ 35 % with more than 99 % reduction in NOₓ emissions. |
| doi_str_mv | 10.4271/2011-01-1766 |
| format | Article |
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Compared to conventional SI operation, BSFC was improved by 14 % ∼ 35 % with more than 99 % reduction in NOₓ emissions.</description><subject>Actuation</subject><subject>Air injection</subject><subject>Blowdown</subject><subject>Combustion</subject><subject>Cooling</subject><subject>Cylinders</subject><subject>Dilution</subject><subject>Engines</subject><subject>Fuels</subject><subject>Gas temperature</subject><subject>Ignition</subject><subject>Superchargers</subject><subject>Temperature distribution</subject><subject>Thermal stratification</subject><subject>Water temperature</subject><issn>1946-3936</issn><issn>1946-3944</issn><issn>1946-3944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpV0M1LwzAYBvAiCs7pzasQ8Go1SfOxHuecbjAcOMVjaJt06-iaLkkd_e9NrUy8JIH83ueFJwiuEbwnmKMHDBEKIQoRZ-wkGKCYsDCKCTk9viN2HlxYu4WQcRjBQVCOwco1sgU6B6_qULbgSX2pUtdKgtlkMgfTal1UCnwWbuMPqcCyViZxRbUGb0m1VmC6b4q64z_ksdQHqQ8VWDXeZZvErDu6aq1Tu8vgLE9Kq65-72Hw8Tx9n8zCxfJlPhkvwiyi1IUIJoiilOeY0JTBUU5xkkoYo5inmCKEOMwIl7H_5yM6gjjlWKZ-lkvCaCqjYXDb59ZG7xtlndjqxlR-pcCUQMpYTGOv7nqVGW2tUbmoTbFLTCsQFF2foutTQCS6Pj0Pe24TJYrKKR_oCu1T_8L_-5veb63T5piNGeajiETRN0yRfyA</recordid><startdate>20120501</startdate><enddate>20120501</enddate><creator>Kuboyama, Tatsuya</creator><creator>Moriyoshi, Yasuo</creator><creator>Hatamura, Koichi</creator><creator>Takanashi, Junichi</creator><creator>Urata, Yasuhiro</creator><creator>Yamada, Toshio</creator><general>SAE International</general><general>SAE International, a Pennsylvania Not-for Profit</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope></search><sort><creationdate>20120501</creationdate><title>A Study of Newly Developed HCCI Engine With Wide Operating Range Equipped With Blowdown Supercharging System</title><author>Kuboyama, Tatsuya ; 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The concepts of these techniques are to obtain a large amount of dilution gas and to generate a strong in-cylinder thermal stratification without an external supercharger for extending the upper load limit of HCCI operation whilst keeping dP/dθmaxand NOₓ emissions low. Also, to attain stable HCCI operation using the BDSC system with wide operating conditions, the valve actuation strategy in which the amount of dilution gas is smaller at lower load and larger at higher load was proposed. Additionally to achieve multi-cylinder HCCI operation with wide operating range, the secondary air injection system was developed to reduce cylinder-to-cylinder variation in ignition timing. As a result, the acceptable HCCI operation could be achieved with wide operating range, from IMEP of 135 kPa to 580 kPa. Compared to conventional SI operation, BSFC was improved by 14 % ∼ 35 % with more than 99 % reduction in NOₓ emissions.</abstract><cop>Warrendale</cop><pub>SAE International</pub><doi>10.4271/2011-01-1766</doi><tpages>16</tpages></addata></record> |
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| identifier | ISSN: 1946-3936 |
| ispartof | SAE International journal of engines, 2012-05, Vol.5 (2), p.51-66, Article 2011-01-1766 |
| issn | 1946-3936 1946-3944 1946-3944 |
| language | eng |
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| source | Jstor Complete Legacy |
| subjects | Actuation Air injection Blowdown Combustion Cooling Cylinders Dilution Engines Fuels Gas temperature Ignition Superchargers Temperature distribution Thermal stratification Water temperature |
| title | A Study of Newly Developed HCCI Engine With Wide Operating Range Equipped With Blowdown Supercharging System |
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