Invention Grant
- Patent Title: Humidity measurement device, control device for internal combustion engine, and abnormality detection device
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Application No.: US16424618Application Date: 2019-05-29
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Publication No.: US11143643B2Publication Date: 2021-10-12
- Inventor: Junzo Yamaguchi , Teruaki Kaifu
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Priority: JPJP2017-015284 20170131
- Main IPC: G01N33/00
- IPC: G01N33/00 ; G01N27/00 ; G01N27/04 ; G01N27/22 ; G01N27/12 ; F02P5/04 ; F02D41/28 ; F02D41/22 ; F02D41/18
Abstract:
A humidity measurement device is configured to measure a humidity of a gas. The humidity measurement device includes: a second-order calculation part to calculate a second-order differential value by performing second-order differentiation by time on a humidity signal output from a humidity detection part; and an adherence determination part to determine whether a liquid has adhered to the humidity detection part based on the second-order differential value obtained by the second-order calculation part.
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