Engine driven vehicle with exhaust emission cleaning
US7422544B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Sep 21, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0234
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of producing lower emissions in the operation of a vehicle includes an internal combustion engine which gives off exhaust gases to an exhaust system comprising a catalytic converter, injectors which are designed to inject hydrocarbon into at least one of the exhaust system and the engine combustion chamber, and a transmission that can be driven by the engine. The method includes a step in which a gear in the vehicle transmission is selected as a function at least of information that catalytic conversion is required and information on the temperature in the exhaust system, so that the gear selected regulates the temperature in the exhaust system. The catalytic converter is preferably of the LNC (Lean NO, Catalyst) type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.