Exhaust gas cleaning device, exhaust system and clamp connection

A clamp connection for detachably connecting a first tubular body to a second tubular body for an exhaust system or an exhaust gas cleaning device, the clamp connection comprising:

• a first ring collar formed at the first tubular body, said first ring collar projecting radially to the outside and extending circumferentially in a closed form;
• a second ring collar formed at the second tubular body, said second ring collar projecting radially to the outside and extending circumferentially in a closed form;
• a sealing ring extending circumferentially in a closed form and axially in contact with said first ring collar and with said second ring collar, at least a portion of said sealing ring, said first tubular body and said second tubular body defining an interior space, said interior space receiving an exhaust fluid flow, said at least said portion of said sealing ring being in contact with said exhaust fluid flow;
• a first ring body arranged on an outside at said first tubular body and axially in contact with said first ring collar on a side facing away from said sealing ring, said first ring body having a first ring body first end and a first ring body second end, said first ring body first end and said first ring body second end defining a first ring body space;
• a second ring body arranged on an outside at said second tubular body and axially in contact with said second ring collar on a side facing away from said sealing ring, said second ring body having a second ring body first end and a second ring body second end, said second ring body first end and said second ring body second end defining a second ring body space;
• and
• a clamp extending over said first ring body and said second ring body and tightening said first ring body and said second ring body axially towards each other.

An exhaust system for an internal combustion engine, the system comprising:

• an exhaust gas cleaning device;
• a first tubular body;
• an exhaust gas cleaning element arranged in said first tubular body;
• a second tubular body;
• a first ring collar formed at the first tubular body, said first ring collar projecting radially to the outside and extending circumferentially in a closed form;
• a second ring collar formed at the second tubular, said second ring collar projecting radially to the outside and extending circumferentially in a closed form;
• a sealing ring extending circumferentially in a closed form and axially in contact with said first ring collar and with said second ring collar, said sealing ring comprising a protective ring, said protective ring being in contact with an exhaust fluid flow, said protective ring being formed of a material that is different from another portion of said sealing ring;
• and
• a first ring body arranged on an outside at said first tubular body and axially in contact with said first ring collar on a side facing away from said sealing ring, said first ring body comprising a first ring body circumferential surface, said first ring body circumferential surface defining a first ring body opening;
• a second ring body arranged on an outside at said second tubular body and axially in contact with said second ring collar on a side facing away from said sealing ring, said second ring body comprising a second ring body circumferential surface, said second ring body circumferential surface defining a second ring body opening;
• a clamp extending over said first ring body and said second ring body and tightening said first ring body and said second ring body axially towards each other.