JP4425729B2 - 内燃機関の炭化水素排出量低減装置 - Google Patents
内燃機関の炭化水素排出量低減装置 Download PDFInfo
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- JP4425729B2 JP4425729B2 JP2004194319A JP2004194319A JP4425729B2 JP 4425729 B2 JP4425729 B2 JP 4425729B2 JP 2004194319 A JP2004194319 A JP 2004194319A JP 2004194319 A JP2004194319 A JP 2004194319A JP 4425729 B2 JP4425729 B2 JP 4425729B2
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- internal combustion
- combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Description
この場合、排気(すなわちEGRガス)によって吸気温度が上昇し炭化水素吸着材が加熱されるため、当該吸着材に吸着された炭化水素が離脱しやすくなり、炭化水素の放出を確実に行うことができる。仮に炭化水素吸着材に高沸点分の炭化水素が吸着している場合にもその高沸点分の炭化水素を確実に放出することができる。冷却水により炭化水素吸着材を加熱する従来構成では、炭化水素を速やかに離脱させることが困難であるが、排気は冷却水に比して高温であるため、炭化水素吸着材の離脱を促進することができる。また本構成では、内燃機関に通常設けられる排気環流装置(EGR装置)の構成を流用するものであるため、従来技術のように炭化水素放出のために新たな構成を要しない。その結果、構成の煩雑化を抑制しつつ、炭化水素吸着材の吸着能力の低下を抑制し炭化水素の排出量を効果的に低減することができるようになる。
Claims (1)
- 内燃機関の吸気通路に設けられたスロットル弁と、
前記スロットル弁よりも下流側に設けられたサージタンクと、
前記吸気通路に設けられた炭化水素吸着材とを備える内燃機関の炭化水素排出量低減装置であって、
前記内燃機関の排気通路において当該排気通路内に設けられた排気浄化用の触媒よりも下流側と前記吸気通路において前記スロットル弁及び前記サージタンクの間とを接続する還流通路を備え、
前記炭化水素吸着材は、前記吸気通路において前記還流通路との接続点よりも下流側に配置されており、前記内燃機関から排出される排気の一部を前記還流通路を介して前記吸気通路側に還流させる構成としたことを特徴とする内燃機関の炭化水素排出量低減装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004194319A JP4425729B2 (ja) | 2004-06-30 | 2004-06-30 | 内燃機関の炭化水素排出量低減装置 |
Applications Claiming Priority (1)
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JP2004194319A JP4425729B2 (ja) | 2004-06-30 | 2004-06-30 | 内燃機関の炭化水素排出量低減装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006017010A JP2006017010A (ja) | 2006-01-19 |
JP4425729B2 true JP4425729B2 (ja) | 2010-03-03 |
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JP2004194319A Expired - Fee Related JP4425729B2 (ja) | 2004-06-30 | 2004-06-30 | 内燃機関の炭化水素排出量低減装置 |
Country Status (1)
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JP (1) | JP4425729B2 (ja) |
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2004
- 2004-06-30 JP JP2004194319A patent/JP4425729B2/ja not_active Expired - Fee Related
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JP2006017010A (ja) | 2006-01-19 |
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