Low evaporative emissions engine management system
US6422191B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine management system for an internal combustion engine for an automobile includes an architecture for a super ultra low evaporative emission capability. In the present architecture, the fuel rail and injectors are located within the intake manifold such that permeating and evaporative emissions are contained within the intake manifold and a sealing throttle body and/or shut-off check valve is located between the air cleaner/induction components and the throttle body prevent hydrocarbon emissions from reaching the atmosphere. Additionally, a shut-off valve and/or programmable valve train are included to prevent hydrocarbons from the PCV valve and fresh air supply line from being vented to atmosphere. A one way check valve is located between the air induction and cleaner and the PCV fresh air supply such that hydrocarbons that are produced within the intake manifold may pass into the PCV fresh air supply line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.