Apparatus for measuring the composition of exhaust gases of internal combustion engines
US5852227A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | May 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0016
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for the measurement of components of exhaust gas of an internal combustion engine in a flame ionization chamber to which the exhaust gas, combustion gas and combustion air are supplied and in which the gas components in the exhaust gases are measured. The apparatus comprises three connection lines respectively for receiving the exhaust gas, combustion gas and combustion air for supplying these to the flame ionization detector. A separate control line is provided containing a pressure controller and an outlet nozzle body which opens to ambient atmosphere. The control line has a section between the pressure controller and the outlet nozzle body. Each connection line has inlet and outlet flow adjusters defining a respective section therebetween. At least two further lines connect the sections of two of the connection lines to the section of the control line. The inlet and outlet flow adjusters in each of the connection lines are set to provide higher gas flow at the inlet flow adjuster than at the outlet flow adjuster. The outlet flow adjusters are nozzles and the inlet flow adjusters can also be nozzles or pressure controllers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.