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US 8,151,626 B2Granted
System and method for sensing high temperature particulate matter
AssigneeHoneywell International Inc.
InventorsBrian C. Krafthefer, Gregory E. Stewart, Jeff Boehler, Matthew Below, Michael L. Rhodes
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Abstract
Sensor apparatus includes a housing, a probe mounted to the housing, the probe including an elongate first part and a helical coil second part conductively coupled to each in series with first and second terminals at opposite ends thereof, the probe to be inserted into an exhaust stream in an exhaust corridor; and a circuit coupled to the first and second terminals of the sensor probe, to selectively operate the probe as a temperature sensor in a first mode and as a PM sensor in a second mode.
Claims20
Sensor apparatus, comprising:
- a housing;
- a probe mounted to the housing, the probe including an elongate first part and a helical coil second part conductively coupled to each other in series with first and second terminals at opposite ends thereof, the probe to be inserted into an exhaust stream in an exhaust corridor;
- and
- a circuit coupled to the first and second terminals of the sensor probe, to selectively operate the probe as a temperature sensor in a first mode and as a particulate matter sensor in a second mode.
1 more element
Dependencies are inferred from the claim text.