System for measuring amount of particulates exhausted from vehicle engine
US4633706A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 1984 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Oct 31, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2261
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for measuring amounts of particulates exhausted from a vehicle internal combustion engine, such as a diesel engine, has a dilution tunnel into which exhaust gas is introduced and mixed with and diluted by clear air. One part of the diluted gas is introduced into a first sampling arrangement in which a first filter is provided for collecting particulates of dry soot and another part of the diluted gas is introduced into a second sampling arrangement in which a second filter is provided for collecting particulates of soluble organic fraction (SOF). The amounts of dry soot and SOF are calculated in a real time manner in accordance with the pressure drops across the filters on the basis of the time differential of the signals output from pressure transducers provided for each filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.