Caterpillar Inc.

Tetsu O Velasquez

Stephan Donald Roozenboom

Yung T Bui

Shashank Mupparapu

Jinhui Sun

Craig Phillip Hittle

Dongming Tan

Paul Park

Umakanth Sakaray

Raymond Bassilli Gerges

Sairam Thiagarajan

Michael P Boahene

Rick E Jeffs

Ramanlal M Gandhi

An exhaust aftertreatment system including a housing with two or more inlets configured to receive separate entering exhaust streams from an engine. The system may include two or more first exhaust treatment devices, each configured to receive one of the separate entering exhaust streams in a first direction. The system may further include two or more redirecting flow passages configured to combine the separate exhaust streams into a merged exhaust stream that flows in a second direction about 180 degrees from the first direction and an intermediate flow region configured to divide the merged exhaust stream into two or more separate exiting exhaust streams. The system also may also includes two or more second exhaust treatment devices, each configured to receive one of the separate exiting exhaust streams in a third direction about 90 degrees from the second direction.

Exhaust aftertreatment system

A reductant dosing system for a machine having an engine and an exhaust system is disclosed. The reductant dosing system has a tank configured to hold a reductant, a dosing arrangement, and a supply passage connecting the tank to the dosing arrangement. The reductant dosing system also has a purging arrangement configured to direct purge fluid to at least one of the dosing arrangement and the supply passage, and a valve configured to allow reductant to pass from the tank to the supply passage and to inhibit purge fluid from entering the tank.

Reductant dosing system having anti-aeration device

Growing community of inventors

Washington, IL, United States of America

Tetsu O Velasquez