Electrically heated catalyst control system and method

Details Electrically heated catalyst control system and method Electrically heated catalyst control system and method

2009-08-07

2010-11-09

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423SDIG018, C423SDIG018, C060S300000

Reexamination Certificate

active

07829048

ABSTRACT:
An exhaust treatment system comprises M electrically heated substrates and a heater control module. The M electrically heated substrates are coated with a catalyst material and arranged in series to receive exhaust gas of an engine. M is an integer greater than one. The heater control module applies power to N of the M substrates to heat the N substrates during a predetermined period. N is an integer less than M. The engine is turned off and the M electrically heated substrates do not receive exhaust gas during the predetermined period.

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patent: 2010/0146938 (2010-06-01), Baum et al.
U.S. Appl. No. 12/537,384, filed Aug. 7, 2009, Eugene V. Gonze.

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