System for controlling NOx emissions during restarts of...

Details System for controlling NOx emissions during restarts of... System for controlling NOx emissions during restarts of...

2007-08-21

2007-08-21

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S276000, C060S299000

Reexamination Certificate

active

10710649

ABSTRACT:
A system for controlling exhaust emission oxides of nitrogen (NOx) during restarts of an internal combustion engine (ICE). The system includes a first sensor for determining a first level of exhaust gas oxygen at a location upstream of a catalytic converter, a second sensor for determining a second level of exhaust gas oxygen at a location mid-bed of the catalytic, and a controller for performing at least one process to reduce NOx emissions when a difference between the first level of exhaust gas oxygen and the second level of exhaust gas oxygen exceeds a predetermined amount.

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Cornelius, S.J., et al.,The role of oxygen storage in NO conversion in automotive catalysts, Topics in Catalysis vol. 16/17, Issue 1/4, Sep. 2001, pp. 57-62.

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