Device for exhaust system of vehicle

1. A clamping assembly for an exhaust system of a vehicle, the clamping assembly including:

a gasket;

a pin integrally formed at an inlet pipe flange of a catalytic converter, the pin including a first diameter end portion integrally formed on the inlet pipe flange of the catalytic converter and a second diameter end portion integrally formed on a front end portion of the first diameter end portion, wherein a diameter of the second diameter end portion is larger than a diameter of the first diameter end portion;

a pin hole formed at the gasket, wherein the pin is configured to be selectively inserted into and engaged with the pin hole, the pin hole including a first diameter hole into which the second diameter end portion of the pin is selectively insertable and a second diameter hole into which the first diameter portion of the pin is selectively inserted and with which the first diameter portion of the pin is engaged with the second diameter hole of the gasket, wherein a diameter of the first diameter hole is larger than a diameter of the second diameter hole; and

a clamp, wherein an outlet pipe flange of a turbocharger and the inlet pipe flange of the catalytic converter are clamped by the clamp while the gasket is interposed between the outlet pipe flange of the turbocharger and the inlet pipe flange of the catalytic converter,

wherein the pin is formed to protrude from the inlet pipe flange of the catalytic converter, and

wherein the gasket is brought into contact with the inlet pipe flange of the catalytic converter while the pin is inserted into and engaged with the pin hole.

2. The clamping assembly of claim 1 ,

wherein a center portion of the first diameter hole of the pin hole is aligned on a same circumference with a center portion of the second diameter hole of the pin hole in a circumferential direction of the gasket.

3. The clamping assembly of claim 1 ,

wherein an engagement groove into which the second diameter end portion of the pin is inserted is formed on the outlet pipe flange of the turbocharger.

4. The clamping assembly of claim 1 ,

wherein the gasket is formed in an annular shape having a flat cross section, and

wherein an external circumferential surface of the gasket is exposed to an outside through a space formed between first and second end portions of the clamp when the gasket is disposed between and in contact with the outlet pipe flange of the turbocharger and the inlet pipe flange of the catalytic converter.

5. The clamping assembly of claim 4 , wherein the gasket further includes a sealing protrusion protrudingly formed on a surface of the gasket.

6. The clamping assembly of claim 1 ,

wherein the gasket includes a main plate, a first plate stacked on a first portion of a surface of the main plate, a second plate stacked on a remaining portion of the surface of the main plate, and a cover plate for surrounding the main plate, the first plate, and the second plate.

7. The clamping assembly of claim 6 ,

wherein the main plate is made of a steel material, the first plate is configured for increasing a thickness of the gasket and made of the steel material and the second plate is made of an elastic material for sealing.

8. The clamping assembly of claim 6 ,

wherein the gasket further includes a third plate stacked on the first plate and the second plate, and

wherein a first end portion of the cover plate is mounted on a first end portion of the third plate and a second end portion of the cover plate is mounted on a second end portion of the third plate.

9. The clamping assembly of claim 1 , wherein the clamp includes:

a clamping ring configured to surround the outlet pipe flange and the inlet pipe flange;

locking end portions bent outward at first and second end portions of the clamping ring; and

a clamping bolt penetrating the locking end portions and configured to tighten the locking end portions of the clamp.