Method and assembly for operating an electrical heater of a cata

Details Method and assembly for operating an electrical heater of a cata Method and assembly for operating an electrical heater of a cata

1994-08-09

1997-12-09

Bhat, Nina

Power plants

Internal combustion engine with treatment or handling of...

Methods

60277, 60300, 422174, 422180, F01N 328

Patent

active

056947704

ABSTRACT:
An assembly for operating an electrical heater in a catalytic converter system connected in an exhaust gas cleaning system downstream of an internal combustion engine. The electrical heater is supplied with an electrical heating current through an electronically controlled power switch. The system is heated with the electrical heater to or above a minimum temperature necessary for catalytic conversion. The temperature of the catalytic converter is measured and utilized as a controlled variable of at least two different control circuits. At least one preferred control circuit is defined from a plurality of control circuits. The system is controlled in regular operation with the preferred control circuit. The preferred control circuit is automatically monitored for malfunction and, if a malfunction is detected, control is automatically transferred to another control circuit.

REFERENCES:
patent: Re32286 (1986-11-01), Imai et al.
patent: 5201173 (1993-04-01), Fujimoto et al.
patent: 5255511 (1993-10-01), Maus et al.
patent: 5307626 (1994-05-01), Maus et al.
patent: 5319921 (1994-06-01), Gopp
patent: 5319929 (1994-06-01), Cornelison et al.
patent: 5323607 (1994-06-01), Tanaka et al.
patent: 5353590 (1994-10-01), Pettit et al.
patent: 5353591 (1994-10-01), Kabasin et al.
patent: 5357754 (1994-10-01), Ogawa et al.
patent: 5361582 (1994-11-01), Uchida et al.
patent: 5377484 (1995-01-01), Shimizu
Patent Abstracts of Japan, vol. 10299 (M524) Oct. 11, 1986 & JP-A-84-0234042 (Toyota) Nov. 8, 1984.

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