Nippon Soken, Inc.

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Nobuhisa Mori

Sigeru Kamiya

Hiroshi Noguchi

Seitoku Ito

Shigeo Iwashita

Nobutoshi Hayashi

Kenichi Uchida

Junji Wakayama

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.

System for measuring amount of particulates exhausted from vehicle engine

A system for measuring particulate discharge from a vehicular internal combustion engine has a dilution tunnel into which exhaust gases are introduced and mixed with and diluted by clean air. A part of the diluted gases is introduced through a sampling probe into a sampled gas line in which a filter is provided to collect particulates contained in the sampled gases. A differential pressure transducer is provided to detect the pressure drop across the filter and convert the detected pressure drop into an electric signal which is fed into an operator which is operative to compute the quantity of particulate content of the engine exhaust gases on the basis of the time differential of the electric signal from the differential pressure transducer.

System for measuring particulate discharge from vehicular internal

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Susono, Japan

Nobuhisa Mori