An exhaust system includes an exhaust component with a wall having an outer surface and an inner surface that defines an internal exhaust gas flow path. At least one opening is formed in the exhaust component to extend through the wall of the exhaust component from the outer surface to the inner surface. A member is formed from a resistive material and is configured to cover the at least one opening. A diverter is positioned adjacent the at least one opening to block at least a portion of the exhaust gas flow path.

The present application provides a muffler-heat exchanger (15) for an engine exhaust. The muffler-heat exchanger comprises a chamber (16) having an inlet (17) and an outlet (18) arranged such that during use exhaust gases flow through from the inlet to the outlet through the chamber. The muffler-heat exchanger also has at least one heat exchange baffle (25) disposed in the chamber to recover heat energy from the exhaust gases during use. The at least one heat exchange baffle is configured to reflect acoustic waves in the exhaust gases towards the inlet to generate destructive interference and impede incoming acoustic waves at the inlet. The present application also provides an exhaust system and an engine system.

An emission signature modification device for modifying an acoustic signature of an exhaust gas stream, including an exhaust gas guiding device that guides the exhaust gas stream in the flow direction thereof from an inlet area to an outlet area. An active acoustic emission modification device modifies the acoustic emission of the exhaust gas stream in predetermined operating states. If an actuator system of the active acoustic emission modification device is designed such that in a circumferential direction, the actuator system is surrounded by more than 30% of the guided exhaust gas stream, the actuating system can be protected against harmful influences from the environment by way of the exhaust gas guiding device on the one hand, and on the other hand, the required space signifier can be reduced as compared to a lateral, external arrangement of the actuating system.

Disclosed is an exhaust-gas after-treatment device for an internal combustion engine, in particular for a ship's diesel internal combustion engine that is operated with heavy oil, including: a housing through which exhaust gas flows; exhaust-gas purification chambers formed in the housing, which chambers hold catalysts and/or particulate filters in order to purify the exhaust gas; and muffler chambers formed in the housing, which chambers have a defined depth for muffling sound in the flow direction. The exhaust-gas purification chambers and the muffler chambers are arranged spatially in series and parallel to one another on the flow side.

A structure is provided for installing a pipe fixing clamp installed in a sound absorber. A part of a curved pipe portion of an internal structural pipe of the sound absorber is cut to form an exhaust gas flow space. The pipe fixing clamp having multiple holes is connected to the exhaust gas flow space.

An exhaust system for a vehicle including a deep snow exhaust outlet defined by a driveline structural member of the vehicle. If the vehicle includes a turbo charger and an exhaust silencer, the turbocharger and the exhaust silencer are coupled together without exhaust piping therebetween.

An exhaust system includes an exhaust component with a wall having an outer surface and an inner surface that defines an internal exhaust gas flow path. At least one opening is formed in the exhaust component to extend through the wall of the exhaust component from the outer surface to the inner surface. A member is formed from a resistive material and is configured to cover the at least one opening. A diverter is positioned adjacent the at least one opening to block at least a portion of the exhaust gas flow path.

An exhaust system for a vehicle including a deep snow exhaust outlet defined by a driveline structural member of the vehicle. If the vehicle includes a turbo charger and an exhaust silencer, the turbocharger and the exhaust silencer are coupled together without exhaust piping therebetween.

The present invention relates to a combined heat exchanger and exhaust silencer for a vehicle, comprising a bypass valve configured to: in a first state, allow a flow path for exhaust gas to be open from an inlet to an outlet via an at least partly perforated bypass pipe, and in a second state, close said flow path, whereby at least a main portion of said exhaust gas is forced through a second flow channel comprising a heat exchanger pipe. The second flow channel is formed by an annular space between an at least partly perforated second pipe and an at least partly perforated third pipe. A sound absorbing material surrounds the bypass pipe and the third pipe, and is further arranged inside the second pipe.

An exhaust silencer for a motor vehicle is provided. In one example, the silencer comprises a noise-reducing structure and a heat sink to transfer heat from exhaust gases to the exterior of the silencer, the heat sink comprising two regions of fins which define a plurality of flow channels through the heat sink, the flow channels directing the flow of exhaust through the silencer from an inlet passage to an outlet passage. In this way, a temperature of the exhaust is reduced, and the silencer and downstream components of an exhaust system may be constructed of materials of a lower thermal tolerance.