Multi-Element Sensors
AssigneeDENSO International America, Inc.
InventorsJonathan LOGAN, Michael LEWIS, Rafal KAPUT, Blaise FRIERY
Life of this patent
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Abstract
A sensor probe having a first sensing element and a second sensing element. The first sensing element generates current changes in response to changes in a relative amount of a target element present in reference air versus a first exhaust gas chamber of the sensor probe. A second sensing element generates current changes in response to changes in a relative amount of the target element present in the first exhaust gas chamber and either a second exhaust gas chamber of the sensor probe or reference air.
Claims20
A sensor probe comprising:
- a first sensing element that generates current changes in response to changes in a relative amount of a target element present in reference air versus a first exhaust gas chamber of the sensor probe;
- and
- a second sensing element that generates current changes in response to changes in a relative amount of the target element present in the first exhaust gas chamber and either a second exhaust gas chamber of the sensor probe or reference air.
A sensor probe comprising:
- a first sensing element between a reference air chamber and a pre-catalyst exhaust gas chamber, the first sensing element generates current changes in response to changes in a relative amount of a target element present in reference air in the reference air chamber versus how much of the target element is present in exhaust gas of the pre-catalyst exhaust gas chamber;
- and
- a second sensing element between the pre-catalyst exhaust gas chamber and a post-catalyst exhaust gas chamber, the second sensing element generates current changes in response to changes in a relative amount of the target element present in exhaust gas of the pre-catalyst exhaust gas chamber versus how much of the target element is present in exhaust gas of the post-catalyst exhaust gas chamber.
A sensor probe comprising:
- a first sensing element between a first reference air chamber and a post-catalyst exhaust gas chamber, the first sensing element generates current changes in response to changes in a relative amount of a target element present in air of the first reference air chamber versus how much of the target element is present in exhaust gas of the post-catalyst exhaust gas chamber;
- and
- a second sensing element between a second reference air chamber and a pre-catalyst exhaust gas chamber, the second sensing element generates current changes in response to changes in a relative amount of the target element present in air of the second reference air chamber versus how much of the target element is present in exhaust gas of the pre-catalyst exhaust gas chamber.
Dependencies are inferred from the claim text.