JP2011241692A - Scrシステム - Google Patents
Scrシステム Download PDFInfo
- Publication number
- JP2011241692A JP2011241692A JP2010112191A JP2010112191A JP2011241692A JP 2011241692 A JP2011241692 A JP 2011241692A JP 2010112191 A JP2010112191 A JP 2010112191A JP 2010112191 A JP2010112191 A JP 2010112191A JP 2011241692 A JP2011241692 A JP 2011241692A
- Authority
- JP
- Japan
- Prior art keywords
- urea water
- amount
- engine
- nox
- urea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
【解決手段】エンジンEの排気管102に設けられたSCR装置103と、SCR装置103の上流側で尿素水を噴射するドージングバルブ104と、排気ガス中のNOx量に応じてNOx還元用の尿素水量を算出する尿素水量算出部1と、エンジンEが過渡状態のときは尿素水量算出部1が算出した尿素水量に余裕量を加味し、エンジンEが定常状態のときは尿素水量算出部1が算出した尿素水量にて、ドージングバルブ104から噴射する尿素水噴射量を制御する噴射量制御部2とを備えた。
【選択図】図1
Description
2 噴射量制御部
100 SCRシステム
103 SCR装置
104 ドージングバルブ
125 ECM
126 DCU
Claims (1)
- エンジンの排気管に設けられた選択還元触媒装置と、
前記選択還元触媒装置の上流側で尿素水を噴射するドージングバルブと、
排気ガス中のNOx量に応じてNOx還元用の尿素水量を算出する尿素水量算出部と、 前記エンジンが過渡状態のときは前記尿素水量算出部が算出した尿素水量に余裕量を加味し、前記エンジンが定常状態のときは前記尿素水量算出部が算出した尿素水量にて、前記ドージングバルブから噴射する尿素水噴射量を制御する噴射量制御部とを備えたことを特徴とするSCRシステム。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010112191A JP2011241692A (ja) | 2010-05-14 | 2010-05-14 | Scrシステム |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010112191A JP2011241692A (ja) | 2010-05-14 | 2010-05-14 | Scrシステム |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2011241692A true JP2011241692A (ja) | 2011-12-01 |
Family
ID=45408619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010112191A Pending JP2011241692A (ja) | 2010-05-14 | 2010-05-14 | Scrシステム |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2011241692A (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001303934A (ja) * | 1998-06-23 | 2001-10-31 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2004156614A (ja) * | 2002-11-06 | 2004-06-03 | Ford Global Technologies Llc | エンジンの排気後処理システム及びその方法 |
JP2008280955A (ja) * | 2007-05-11 | 2008-11-20 | Bosch Corp | 排気浄化装置の制御装置及び制御方法並びに内燃機関の排気浄化装置 |
-
2010
- 2010-05-14 JP JP2010112191A patent/JP2011241692A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001303934A (ja) * | 1998-06-23 | 2001-10-31 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2004156614A (ja) * | 2002-11-06 | 2004-06-03 | Ford Global Technologies Llc | エンジンの排気後処理システム及びその方法 |
JP2008280955A (ja) * | 2007-05-11 | 2008-11-20 | Bosch Corp | 排気浄化装置の制御装置及び制御方法並びに内燃機関の排気浄化装置 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5482446B2 (ja) | Scrシステム | |
JP5912232B2 (ja) | Scrシステム | |
JP5678475B2 (ja) | Scrシステム | |
US9546584B2 (en) | Multi-stage SCR system | |
US8677736B2 (en) | Exhaust gas purification apparatus of an internal combustion engine | |
JP5471831B2 (ja) | Scrシステム | |
US8931259B2 (en) | Reductant delivery apparatus with purging means | |
JP5533235B2 (ja) | NOxセンサ診断装置及びSCRシステム | |
US10094259B2 (en) | Systems and techniques for heating urea injection systems | |
US9470129B2 (en) | Systems and techniques for heating urea injection systems | |
JP5840829B2 (ja) | Scrシステム | |
CN104769244A (zh) | 内燃机的排气净化装置 | |
US20140260190A1 (en) | Exhaust Aftertreatment Control System And Method For Maximizing Fuel Efficiency While Reducing Emissions | |
JP2016502019A (ja) | 還元剤注入制御システム | |
EP3073083B1 (en) | Exhaust gas control apparatus | |
US10180096B2 (en) | Fluid delivery system with line pressure control valve | |
JP5471832B2 (ja) | Scrシステム | |
JP5516072B2 (ja) | Scrシステム | |
JP5471833B2 (ja) | Scrシステム | |
JP2011241775A (ja) | Scrシステム | |
CN104838102A (zh) | 内燃机的排气净化系统 | |
JP5749450B2 (ja) | Scrシステム | |
JP2012021457A (ja) | NOxセンサ昇温装置 | |
JP2012062818A (ja) | エンジンの排ガス浄化装置 | |
JP2011241692A (ja) | Scrシステム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20130405 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131210 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20131212 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20140203 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140805 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20141006 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20150512 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20150730 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20150806 |
|
A912 | Re-examination (zenchi) completed and case transferred to appeal board |
Free format text: JAPANESE INTERMEDIATE CODE: A912 Effective date: 20151009 |