Cummins Emission Solutions Inc.

Cummins Inc.

Ramakrishna Gopal Dontha

Z Gerald Liu

Changsheng C Su

James C Clerc

Nathan A Ottinger

Niklas M Schmidt

A Carl McDonald, Jr

Yujun Wang

Jinqian Gong

Yuanzhou Xi

Daniel E Boewe

Hari Donepudi

Niraj Desai

Mike Menkedick

A method includes: providing a SCR system comprising a SCR catalyst; heating the SCR system to a temperature greater than 500 degrees Celsius for a predetermined time so as to increase sulfur resistance of the SCR catalyst; and installing the SCR system in an aftertreatment system.

Treated SCR catalysts with enhanced sulfur resistance

An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.

Method and apparatus to enhance fractional efficiency of diesel and gasoline particulate filters

A system comprising an actuator and a controller configured to drive the actuator with a pulse width modulated (PWM) signal. The controller is configured to limit a duty cycle of the PWM signal in response to a current supplied by the PWM signal.

Actuator control system

Growing community of inventors

Columbus, IN, United States of America

Ramakrishna Gopal Dontha