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:
Aug. 24, 2021
Filed:
Aug. 01, 2018
Robert Bosch Gmbh, Stuttgart, DE;
Mohamed El-Gammal, Windsor, CA;
Mark V. Casarella, Ypsilanti, MI (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A compact SCR device is provided for use with a diesel exhaust fluid (DEF) injection system having multiple injectors for providing diesel exhaust fluid to exhaust gas to reduce NOemissions. The DEF injectors are disposed in the close coupled SCR mixer. A first injector injects into a chamber of the mixer with sidewardly oriented impingement plates having openings. A second injector radially spaced and offset has a different angle from the first injector for injecting DEF into the SCR mixer. A swirl plate forces the exhaust gas in the flow path to turn and exit through an outlet opening. An inlet opening for the mixer is aligned transversely near the first injector and is offset from the outlet opening. Thus, upon entering the compact SCR mixer, the exhaust gas must change direction and passes by at least one injector and impingement plates having flaps and openings before exiting the mixer.