Malfunction-determining device for exhaust gas purifying device and malfunction-determining method for exhaust gas purifying device
US9389146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2014 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Mar 19, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A malfunction-determining device for an exhaust gas purifying device, which includes a filter device and a pressure measuring device, includes a usability determiner being configured to determine whether or not the pressure measuring device is usable based on a pressure measured by the pressure measuring device and an exhaust gas flow rate, a frozen-state determiner being configured to determine whether or not the pressure measuring device is frozen, and a malfunction determiner being configured to determine that the pressure measuring device has a malfunction when the usability determiner determines that the pressure measuring device is unusable and the frozen-state determiner determines that the pressure measuring device is not frozen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.