About 43 results
https://drivepatents.com/patents/946066 · 9 Mar 2016
The invention relates to a motor vehicle comprising a control module capable of selectively placing the selective catalytic reduction module and/or the nitrogen oxide absorption module in poor operation in active mode according to at least one parameter (R...
https://drivepatents.com/patents/946378 · 10 Feb 2016
Provided is an exhaust gas purification system which can suppress a decrease in engine torque during a desulfurization process applied to a NOx storage reduction catalyst. The exhaust gas purification system includes a NOx storage reduction catalyst (3) pr...
https://drivepatents.com/patents/946296 · 10 Feb 2016
An internal combustion engine comprises a hydrocarbon feed valve (15) arranged in an engine exhaust passage and a booster pump (60) for boosting an injection pressure of the hydrocarbon feed valve (15). The hydrocarbon feed valve (15) performs NO X removal...
https://drivepatents.com/patents/951879 · 11 Mar 2015
In an internal combustion engine, a fuel injector (15), an NO x storage catalyst (13), and a particulate filter (14) are arranged in an engine exhaust passage. When post injection (PI) is performed for raising the temperature of the NO x storage catalyst (...
https://drivepatents.com/patents/992483 · 6 Mar 2013
An internal combustion engine according to the present invention includes an exhaust treatment apparatus provided in an exhaust passage, and a burner apparatus provided upstream of the exhaust treatment apparatus to raise exhaust temperature. A valve drivi...
https://drivepatents.com/patents/1000168 · 25 Jul 2012
An exhaust emission control device includes a NOx purification catalyst, a three-way catalyst provided upstream of the NOx purification catalyst, a first air-fuel ratio sensor provided upstream of the three-way catalyst, a second air-fuel ratio provided do...
https://drivepatents.com/patents/1007198 · 14 Dec 2011
An internal combustion engine exhaust purifying device is provided that can avoid surging occurring with enrichment of the exhaust A/F. It includes a high-pressure EGR path 6 that recirculates a portion of the exhaust gas upstream of a turbine (81) to an i...
https://drivepatents.com/patents/1069769 · 1 Mar 2006
A new engine control system has been developed for diesel engines (10). This operates in accordance with the engine performance characteristic diagrams, to enable rich/weak running control. In the new controller (23), a computer changes over to rich- or we...
Catalyst control apparatus for internal combustion engine and method for performing catalyst control
https://drivepatents.com/patents/1077296 · 1 Jun 2005
A degree of deviation between an actual air-fuel ratio and a value detected by an air-fuel ratio sensor is obtained as a difference dTHC between a target catalyst bed temperature THCt and a catalyst bed temperature THC (S118). The difference dTHC is conver...
https://drivepatents.com/patents/1079121 · 23 Mar 2005
The invention relates to a control apparatus capable of separately detecting an unexpected fluctuation in the amount of NOx discharged from an engine (10) (combustion chamber (17)), separately from deterioration of lean NOx catalyst performance, thereby av...