DEVICE FOR MEASUREMENT OF CONTENT OF EXHAUST GASES Russian patent published in 2016 - IPC F01N13/00 G01N1/22 

FIELD: measuring devices.

SUBSTANCE: invention relates to a device for measurement of content of nitrogen oxides in exhaust gases. Disclosed is a device for intake of exhaust gases, used for measurement of exhaust gas content in exhaust flow (4) of internal combustion engine. Device (2) is located adjacent to exhaust line (6), contains sensor (8) located in measuring chamber (10), and has at least two holes (14), directed towards outlet flow (4) for removal of part of outlet flow directed to measuring chamber (10) via mixing chamber (20), which is circular and is made so that it surrounds exhaust line (6). Said device is made with possibility of directing exhaust gases from measuring chamber (10) back into exhaust line (6) in location of downstream holes (14). Holes have shape of at least two intake pipes (12), each of which at least partially located in exhaust pipe (6). Device is equipped with constriction (22) near place in exhaust pipe (6), where exhaust gases from measuring chamber (10) are fed back into exhaust pipe (6) to use venturi effect to improve flow past sensor (8).

EFFECT: control of exhaust system with higher accuracy.

8 cl, 5 dwg