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1. US20130156652 - Exhaust Gas Emission Control System

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[ EN ]

Claims

1. An exhaust gas emission control system comprising:
cylindrical first shell and second shell that are detachably connected in series along an exhaust gas flow direction;
a bulging portion provided at an end of the first shell near the second shell, the bulging portion bulging radially outward;
a flare provided at an end of the second shell near the first shell, the flare enlarging toward the first shell; and
an inner packing member that is held via an insulating mat at least inside the first shell of the first shell and the second shell, wherein
an end near the second shell of the inner packing member provided inside the first shell projects beyond an end of the insulating mat toward the second shell but does not project beyond the end of the first shell, and
the first shell and the second shell are mutually connected by a fastener provided with a V-insert that bridges the mutually close bulging portion and the flare.
2. The exhaust gas emission control system according to claim 1, wherein
the end of the inner packing member near the second shell is positioned near the second shell beyond a minimum projecting margin from the insulating mat which is necessary for an assembly step.
3. The exhaust gas emission control system according to claim 1, wherein
the end of the inner packing member near the second shell is positioned within a range of the bulging portion.
4. The exhaust gas emission control system according to claim 1, wherein
a volume of the inner packing member projecting from the end of the insulating mat is set at a value such that a stress generated on the inner packing member by a bending moment does not exceed an allowable stress of the inner packing member.