Controlling device for purifying exhaust gas purifying
US10526988B2 · kind B2 · utility
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2References
12Claims
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Assignee
Inventor
Key dates
| Filing date | Feb 2, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Feb 2, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A controlling device for purifying exhaust gas includes: a fuel cutting controller (2) that, if a predetermined condition for fuel cutting is satisfied, shuts off supply of fuel to an engine (10) after a predetermined delay time (B) elapses; a calculator (3) that calculates oxygen occludability of a catalyst (6, 7) being interposed in an exhaust system of the engine (10) and containing an oxygen occludable material; and a setter (4) that sets a length of the delay time (B) in accordance with the oxygen occludability calculated by the calculator (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.