Evaporative fuel-processing system for internal combustion engines for vehicles
US5345917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Jul 2, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0809
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An evaporative fuel-processing system for an internal combustion engine in a vehicle, comprises an evaporative emission control system. A purge control valve is arranged across a purging passage for controlling opening thereof, and a drain shut valve is arranged across an inlet port of a canister. The evaporative fuel-processing system has a function of detecting abnormalities in the evaporative control system and the fuel tank. The ECU detects an amount of evaporative fuel generated within the fuel tank, and inhibits the abnormality detection of the evaporative control system, when the amount of generated evaporative fuel exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.