Exhaust gas purification system
US9222391B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2014 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Oct 1, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An exhaust gas purification system for an internal combustion engine includes: an addition valve disposed in an exhaust pipe of the internal combustion engine to add a reducing agent to exhaust gas; a temperature obtaining portion that acquires a temperature of the addition valve; a cooling portion that cools the addition valve by circulating cooling fluid; a determining portion that determines whether the cooling portion is able to normally cool the addition valve; and an output limit portion that limits output of the internal combustion engine based on a heat-resistant temperature of the addition valve and the temperature of the addition valve acquired by the temperature obtaining portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.