The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 1982
Filed:
Feb. 19, 1981
Sigeru Kamiya, Chiryu, JP;
Junji Wakayama, Okazaki, JP;
Nobutoshi Hayashi, Nishio, JP;
Hiroshi Noguchi, Gotenba, JP;
Kenichi Uchida, Susono, JP;
Nobuhisa Mori, Susono, JP;
Nippon Soken, Inc., Nishio, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
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.