Cummins Emission Solutions Inc.

Guinness Shrestha

John K Heichelbech

Andrew Morgan Myer

John Anthis

Joydeep Dipak Chakrabarti

James F Burke

Deepu Chandy

Yongquan Chai

Mugdha Naik

Wei Huang

Aditya Hegde

Aditya Mittal

Venkata SriKiran Bodapati

An aftertreatment system comprises a first bank to receive a first portion of an exhaust gas and a second bank to receive a second portion of the exhaust gas. A first reductant insertion assembly is fluidly coupled to the first bank and a parent controller is communicatively coupled thereto. A second reductant insertion assembly is fluidly coupled to the second bank and a first child controller is communicatively coupled thereto. A third reductant insertion assembly is fluidly coupled to the first bank and a second child controller is communicatively coupled thereto. The parent controller instructs the first reductant insertion assembly to insert reductant into the first bank. The parent controller also instructs the first child controller to command the second reductant insertion assembly to insert reductant into the second bank, and instructs the second child controller to command the third reductant insertion assembly to insert reductant into the first bank.

Control of multiple reductant insertion assemblies using a single controller

Urea injection system wash cycle methods and systems are disclosed. An exemplary wash cycle method includes operating a urea injection system to provide urea solution to a first inlet of a blending chamber, provide pressurized gas to a second inlet of the blending chamber, and output a combined flow of pressurized gas and urea solution from the blending chamber. A pressure of the combined flow at a location downstream from the first inlet and the second inlet is monitored. A wash cycle is performed based upon the monitored pressure wherein the flow of pressurized gas is turned off and urea solution is provided to the blending chamber. An exemplary system includes a controller configured to control a urea injection system to perform a wash cycle in accordance with the exemplary method.

Urea injection systems wash cycles

Growing community of inventors

Columbus, IN, United States of America

Guinness Shrestha