A muffler integrated type gasoline particulate filter includes a filter having first and second surfaces and first channels and second channels alternately arranged, each of the first channels being closed at the second surface and each of the second channels being closed at the first surface, the filter collecting exhaust gas particulates when exhaust gas passes through a wall surface disposed between the first and second channels. The muffler integrated type gasoline particulate filter further includes protruding walls formed on an inner wall surface of each of the first and second channels in a longitudinal direction thereof. The protruding walls reduce noise of the exhaust gas flowing along each of the first and second channels.

A metal substrate for catalytic converter is characterized by: a flat foil and a corrugated metal foil arranged on a gas inlet side end section being joined to each other; the flat foil and the corrugated metal foil arranged in an outer circumferential joining section being joined to each other, said outer circumferential joining section being connected to an end section of the gas inlet side end section in the axial direction; an outer jacket and the honeycomb core being joined by interposing a bonding layer in the gas outlet side end section area P fulfilling formula (A), when P is the length of the bonding layer in the axial direction; a corrugated metal foil having an impact mitigating section; the impact mitigating section being formed in an area corresponding to at least the gas inlet side end section and the outer circumferential joining section.

2 mmP50 mm(A):

A catalytic converter for aftertreatment of exhaust gases from an internal combustion engine, having a honeycomb body formed by wrapping from at least one metal foil, where the honeycomb body has a center axis that runs along its axial extent from a gas entry side of the honeycomb body up to a gas exit side of the honeycomb body, and the honeycomb body has a multitude of flow channels through which a flow can pass from a gas entry side of the honeycomb body to a gas exit side, wherein the honeycomb body is divided into individual axial sections along its axial extent along which the center axis runs, where the axial sections have flow channel sections that run along different angles relative to the center axis.