Caterpillar Inc.

Rajdeep Pradhan

Stephan Donald Roozenboom

Raymond Upano Isada

An exhaust muffler for an internal combustion engine including a housing having a sidewall, a first end plate and a second end plate spaced apart and located opposite the first end plate. A plurality of partitions may be disposed within the housing defining a plurality of chambers, including a resonator chamber, a cross-flow chamber, and an outlet chamber. An inlet pipe may be disposed through the housing into the resonator chamber and in fluid communication with the cross-flow chamber, the inlet pipe having a bend in the resonator chamber, wherein the inlet pipe is in fluid communication with the resonator chamber through a resonator aperture located in the bend. A resonator tube may be in fluid communication with the cross-flow chamber and the outlet chamber. An outlet pipe may be disposed through the housing and in fluid communication with the outlet chamber.

Exhaust muffler

An aftertreatment module for use with an engine is disclosed. The aftertreatment module may have a plurality of inlets configured to direct exhaust in a first flow direction into the aftertreatment module. The aftertreatment module may also have a mixing duct configured to receive exhaust from the plurality of inlets, and a branching passage in fluid communication with the mixing duct. The branching passage may be configured to redirect exhaust from the mixing duct into separate flows that exit the aftertreatment module in a second flow direction opposite the first flow direction.

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Edwards, IL, United States of America

Rajdeep Pradhan