Control apparatus for gas sensor

Details Control apparatus for gas sensor Control apparatus for gas sensor

2006-08-01

2006-08-01

Paschall, Mark (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S202000, C219S492000, C374S132000, C123S697000

Reexamination Certificate

active

07084379

ABSTRACT:
A control apparatus for a gas sensor, wherein a microcomputer44, which is connected to an oxygen sensor30including a detection element12and a heater14, detects the cooling water temperature Tw of the engine. The control apparatus determines that condensation water within the exhaust pipe is being generated when the cooling water temperature Tw is equal to or lower than 0° C. When equal to or lower than 0° C., the microcomputer44supplies to the heater14electrical power for maintaining the temperature of the detection element12within the range of 100° C. to a splash-water-cracking generation temperature (e.g., about 300° C.) at or above which cracking can occur in a laminated-type oxygen sensor element10due to splash of condensation water. Electrical power is supplied to the heater14such that a pulse signal Sh is output from the microcomputer44, and the heater14is pulse-driven by use of a heater electrification control circuit34.

REFERENCES:
patent: 5719778 (1998-02-01), Suzumura et al.
patent: 6304812 (2001-10-01), Kolmanovsky et al.
patent: 6476364 (2002-11-01), Shimamura et al.
patent: 2002/0000436 (2002-01-01), Hashimoto et al.
patent: 2003/0084892 (2003-05-01), Ohkuma
patent: 2005/0006368 (2005-01-01), Sell et al.
patent: 2001-41923 (2001-02-01), None

Affiliated with

Also associated with

Rating

Control apparatus for gas sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control apparatus for gas sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus for gas sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3651756