Caterpillar Inc.

Timothy Josiah Lee

Todd R Kabrich

Anthony C Rodman

Yung T Bui

Yuesheng He

Jim K Carroll

David C Copley

Dustin Irvin Landwehr

Rakesh Chandran Ramachandran

Prabhu Jayaraman

A hydraulic fracturing system may include a trailer having an unenclosed trailer bed, a fluid pump mounted on the unenclosed trailer bed, an engine, operably coupled to the fluid pump, mounted on the unenclosed trailer bed, and a sound-dampening system. The sound-dampening system may include a sound-dampening panel mounted on the engine. The sound-dampening panel may be configured to dampen sound produced by at least one moving part of the engine.

Sound-dampening panels for an engine

A reduction device includes a housing defining an input chamber configured to receive exhaust from a power source, an output chamber, an exhaust channel configured to direct the exhaust from the input chamber to the output chamber, and a longitudinal axis. The reduction device also includes a treatment unit disposed in the exhaust channel and along the longitudinal axis. The treatment unit is configured to at least partly remove pollutant species from the exhaust. The reduction device also includes an attenuation component disposed in the housing and radially outward of the treatment unit. The attenuation component is fluidly connected to the exhaust channel, and is configured to attenuate a range of frequencies corresponding to operation of the power source. Additionally, the exhaust channel prohibits exhaust entering the input chamber from exiting the housing without passing through the treatment unit.

Noise attenuation components

Growing community of inventors

Morton, IL, United States of America

Timothy Josiah Lee