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:
Sep. 02, 2025
Filed:
Dec. 15, 2022
Petróleo Brasileiro S.a.-petrobras, Rio de Janeiro, BR;
Instituto DE Tecnologia Para O Desenvolvimento-lactec, Curitiba, BR;
Antonio Carlos Scardini Villela, Rio de Janeiro, BR;
Tadeu Cavalcante Cordeiro De Melo, Rio de Janeiro, BR;
Juliano Pazello Chedid, Curitiba, BR;
Dennis Rempel, Curitiba, BR;
Luiz Carlos Corrêa, Curitiba, BR;
Luiz Carlos Daemme, Curitiba, BR;
Pedro Caffaro Vicentini, Rio de Janeiro, BR;
Renato De Arruda Penteado Neto, Curitiba, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Instituto De Tecnologia Para O Desenvolvimento-LACTEC, Curitiba, BR;
Abstract
The present invention provides a system and a method for determining the particulate matter mass in vehicle emissions tests, seeking to improve weighing resolution and reduce experimental uncertainties. The invention presents two embodiments, in which in the first embodiment there is a branch in the vehicle emissions collection equipment that allows to integrate the particulate matter generated during the entire test into a single filter. In the second embodiment, there are two branches in which one branch has a filter for the accumulation of the particulates produced in phases 1 and 2 of the test and the other branch has another filter for the accumulation of the particulates in phases 2 and 3.