A thermally-insulated exhaust bellow assembly with nested inner liner, wire mesh insulation, and optional heating element to reduce heat loss while maintaining flexibility and meeting Euro VII/CARB emissions standards.

Patentradars sammanfattning

Volvo's exhaust bellow assembly addresses conventional bellows' durability and thermal efficiency challenges through a multi-layer design: an outer corrugated bellow provides flexibility, while a novel inner liner constructed from nested metal sheet segments joined by aerodynamic weld profiles optimizes exhaust gas flow and reduces backpressure. A wire mesh with sustainable insulation material (rice straw, rice husk, jute) sandwiched between layers, combined with an air gap, minimizes heat loss critical for downstream catalyst performance. Optional integrated copper spiral heating element with temperature control maintains optimal operating temperatures for Euro VII/CARB compliance.

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