System and method for reducing cold start emissions using an active exhaust throttle valve and an exhaust gas recirculation loop
US9719389B2 · kind B2 · utility
2Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2015 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Jul 16, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system according to the principles of the present disclosure includes an engine start module and an exhaust throttle valve control module. The engine start module determines when an engine is started based on at least one of an input from an ignition system and the speed of the engine. The exhaust throttle valve control module selectively fully closes an exhaust throttle valve in an exhaust system of the engine when the engine is started to trap exhaust gas in the exhaust system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.