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US 2004/0200211 A1Published application
Sensor configuration for caustic environments
OwnerSeth E. Slaughterinventor
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for using a sensor. A sensor is selectively coupled with an environmental condition for which the sensor is designed when a first predetermined event occurs. The sensor is selectively decoupled from the environmental condition when a second predetermined event occurs.
Claims12
A method for using a sensor, comprising:
- selectively coupling a NOx sensor with a diesel engine exhaust flow when a first predetermined event occurs;
- and
- selectively decoupling the sensor from the flow when a second predetermined event occurs.
An apparatus for sensing a condition, comprising:
- a first exhaust flow path operable to transmit an exhaust flow from a diesel engine;
- a second exhaust flow path operable to transmit an exhaust flow from the engine;
- a control valve coupled with the first exhaust flow path and the second exhaust flow path, the control valve operable to receive an exhaust flow from the engine and to selectively transmit the exhaust flow from the engine to one of the first and second exhaust flow paths as a function of a control signal;
- a NOx sensor coupled with the second exhaust flow path, the sensor operable to monitor the NOx in the exhaust flow in the second exhaust flow path and to transmit a first signal as a function thereof.
1 more element
A apparatus for sensing a condition, comprising:
- a first exhaust flow path operable to transmit an exhaust flow from a diesel engine;
- a NOx sensor operable to monitor the NOx in the exhaust flow in proximity to the sensor and to transmit a first signal as a function thereof;
- and
- a first actuator operable to selectively couple and isolate the sensor from the first exhaust flow path as a function of a control signal.
1 more element
Dependencies are inferred from the claim text.