Patent
Exhaust gas purification system for vehicle and regeneration control method thereof
Jun Sung Park
- 13 Mar 2013
10
TL;DR: In this paper, an exhaust gas purification system and a regeneration control method are configured to determine whether a regeneration condition of particulate filter is satisfied through vehicle information to regenerate the filter until particulate matter has reached a predetermined reference amount by increasing temperature of exhaust gas when regeneration condition is satisfied.
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Abstract: An exhaust gas purification system and a regeneration control method thereof is configured to determine whether a regeneration condition of particulate filter is satisfied through vehicle information to regenerate the particulate filter until particulate matter has reached a predetermined reference amount by increasing temperature of exhaust gas when a regeneration condition is satisfied,, to maintain temperature of lean NOx trap in a range of a predetermined reference temperature when regeneration of the particulate filter has reached the predetermined reference amount, to provide desulfurization performed to the lean NOx trap during rich burn, and regeneration where the particulate matter during lean burn is removed according to engine being controlled to drive such that lean burn and rich burn are repeatedly and alternately performed, and to control engine to drive by a normal burn when the desulfurization of the lean NOx trap and the regeneration of the particulate filter are completed
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Citations
Patent
Engine control device
Takashi Kawabe,Koji Hata,Fumiaki Hiraishi +2 more
- 06 Mar 2014
TL;DR: In this paper, an engine control device capable of accurately detecting the missing of crank pulses and the erroneous detection of the crank pulses due to generation of noise was presented, where a toothless part on the outer periphery of a toothed crankshaft was used for feeding crank pulses.
24
Patent
Control method for improving nitrogen oxide purification performance
Hyo Kyung Lee
- 23 Nov 2015
TL;DR: In this article, a control method for improving nitrogen oxide purification performance (NO x ) includes starting NO x regeneration, comparing first and second lambda values measured at first-and second lambda sensors in a control unit, checking the lean NO x trap (LNT) temperature, and measuring a second time that has elapsed after the first lambda values are found to be the same.
2
Patent
Method of pre-emptively regenerating a lean nox trap
Jim Bromham,Frederik De Smet,Ford Kim +2 more
- 29 Oct 2015
TL;DR: In this article, a method of predicting the future use of a vehicle or an engine of the vehicle is used to evaluate whether NOx slippage from a lean NOx trap is likely to occur during a current drive cycle and also for scheduling when favorable conditions are likely to exist to purge the lean nox trap before the slippages of NOx from the lean NOX trap is expected to occur.
2
Patent
Off-gas treatment system and method used for diesel engine
H Markus,B Wolfgang,W Andrei +2 more
- 11 May 2016
TL;DR: In this paper, an off-gas treatment system used for a diesel engine is described, which consists of a particle filter and a controller, where the particle filter regeneration module is constructed to start the regeneration operation when the controller judges that the regeneration conditions are reached and the controller further comprises a desulfurization module.
2
Patent
Exhaust purification system
輝男 中田,Teruo Nakada,隆行 坂本,Takayuki Sakamoto,長岡 大治,Daiji Nagaoka +5 more
- 16 Mar 2016
TL;DR: In this paper, an exhaust purification system is provided with: a NOx storage-reduction catalyst 32 that stores NOx contained in exhaust, and, in an exhaust-rich state, reduces and purifies the stored NOx; and a nox purge rich control unit 140.
1
References
Patent
Emissions treatment system with NSR and SCR catalysts
Yuejin Li,Michel Deeba,Joseph C. Dettling,Joseph A. Patchett,Stanley Roth +4 more
- 04 Nov 2004
TL;DR: In this article, an emissions treatment system for an exhaust stream, having a NOx storage reduction (NSR) catalyst (2) with NOx sorbent at a concentration of at least 0.1g/in3 and a platinum group metal component dispersed on a refractory metal oxide support; and an SCR catalyst (3) disposed downstream of the NSR catalyst was presented.
134
Patent
Exhaust gas purifying apparatus for internal combustion engine
Akira Odajima,Yuzuru Koike,Yoshitaka Wako Takasuka,Atsushi Izumiura,Hiroshi Nagashima,Kiyoshi Saito +5 more
- 26 Sep 2008
TL;DR: In this paper, an exhaust gas purifying apparatus for an internal combustion engine, including a particulate filter provided in an exhaust passage of the engine; a pressure difference sensor for detecting the difference between upstream and downstream side pressures of the filter; and a downstream side passage, which connects the sensor and the filter with respect to the exhaust passage.
56
Patent
Method for the simultaneous desulfation of a lean NOx trap and regeneration of a Diesel particulate filter
Yiqun Nmn Huang,Shizuo Nmn Sasaki,Gary D. Neely,Jeffery A Leet +3 more
- 01 Jul 2005
TL;DR: In this article, high exhaust gas temperatures whereby sulfur is removed from a lean NOx traps simultaneously with regeneration of a Diesel particulate filter is provided by alternating engine operation in respectively defined lean and rich combustion modes.
54
Patent
Apparatus comprising lean burn ic engine and an exhaust system therefor
Hai-Ying Chen,Howard Hess,Andrew Peter Walker +2 more
- 21 Dec 2007
TL;DR: In this paper, a lean burn internal combustion engine and an exhaust system for treating a flowing exhaust gas from the engine, which system comprising: (a) a first substrate monolith comprising a NOx adsorber catalyst (NAC); and (b) a catalysed soot filter (CSF) comprising a filter substrate.
18
Patent
NOx reduction device for diesel vehicles
Sung Mu Choi
- 20 Nov 2009
TL;DR: In this article, the HC-SCR catalyst can remove NOx in the regeneration of the diesel Particulate Filter (DPF) even if an additional post injector is not provided to promote an active reaction of the HC SCR catalyst.
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