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Hermann Hahn Patents
Inventor:
Hahn; Hermann
Address:
Hannover, DE
No. of patents:
7
Patents:




Patent Number Title Of Patent Date Issued
7073324 Device and method for determining the need for regeneration in a NO.sub.x storage catalyst July 11, 2006
The invention relates to a device and method for determining the need for regeneration in a NO.sub.x storage catalyst (18) arranged in the exhaust train (12) of an at least periodically lean-operating internal combustion engine (10) for a motor vehicle. According to the invention, the ne
6941748 Method for desulfurization of an NOx storage accumulator-catalyst arranged in an exhaust system September 13, 2005
A method for the desulfurization of an NO.sub.x storage catalyst arranged in an exhaust system of an internal combustion engine, whereby, for the desulfurization, the internal combustion engine is alternatingly operated in a lean mode at .lambda.>1 and a rich mode at .lambda.<1. Du
6928808 Device and method for controlling the nox regeneration of a nox storage catalyst August 16, 2005
The invention relates to a method and device for controlling the NO.sub.x regeneration of a NO.sub.x storage catalyst (14) disposed in the exhaust gas train (12) of an internal combustion engine (10) of a motor vehicle. The NO.sub.x regeneration is at least initiated when a threshold val
6843240 Method for monitoring the functioning of a NOx sensor arranged in an exhaust gas channel of an i January 18, 2005
The invention relates to a method for monitoring the functioning of an NOx sensor, which is arranged in an exhaust gas channel of an internal combustion engine and is located downstream from an NOx storage catalytic converter. The aim of the invention is to detect the faulty functioning
6716097 Device for severing a spare rib April 6, 2004
The invention relates to a device for severing a spare rib (RR) from a backbone (R), whereby the split backbone is conveyed inside a guideway (2), which is comprised of two guide plates (21, 22) and which delimits a wedge-shaped channel (23) through which the spare rib (R) projects each
6705078 Method and device for controlling a NOx storage catalyst that is arranged in an exhaust gas chan March 16, 2004
The invention relates to a method for controlling a NO.sub.x storage catalyst by means of a NO.sub.x -sensitive measuring device, especially a NO.sub.x sensor, that is arranged downstream in relation to the NO.sub.x storage catalyst which is arranged in an exhaust gas channel of a co
6408615 Method for controlling an NOx accumulating catalytic converter June 25, 2002
The end of a regeneration interval of an NOx accumulating catalytic converter for an engine run on a lean mixture is determined by detecting the end of the regeneration phase of the NOx accumulator using a sensor having a cross-sensitivity NOx and to a reducing agent in an exhaust-gas


 
 
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