A muffler (101) for a vehicle, the muffler (101) having at least one first crumple feature (105) and at least one second crumple feature (107), the first and the second crumple features (105, 107) being configured to absorb the energy of an impact load to the muffler (101). The first crumple feature
A muffler (101) for a vehicle, the muffler (101) having at least one first crumple feature (105) and at least one second crumple feature (107), the first and the second crumple features (105, 107) being configured to absorb the energy of an impact load to the muffler (101). The first crumple feature (105) is configured to deform at a first level of impact loading and the second crumple feature (107) is configured to deform at a second level of impact loading.
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1. A vehicle muffler comprising: an internal wall having a flange around at least a portion thereof;a first groove indented into the wall;a first notch formed in the flange adjacent an end of the first groove, the first notch and first groove configured to promote deformation of the wall at the firs
1. A vehicle muffler comprising: an internal wall having a flange around at least a portion thereof;a first groove indented into the wall;a first notch formed in the flange adjacent an end of the first groove, the first notch and first groove configured to promote deformation of the wall at the first groove when subjected to a first loading level;a second groove indented into the wall; anda second notch formed in the flange at an end of the second groove, the second notch and second groove configured to promote deformation of the wall at the second groove when subjected to a second loading level greater than the first level. 2. The muffler of claim 1, further comprising a third notch formed in the flange at a second end of the first groove and a fourth notch formed in the flange at a second end of the second groove. 3. The muffler of claim 1, wherein the first and second grooves are formed in a first face of the wall. 4. The muffler of claim 1, wherein the first and second grooves are parallel with one another. 5. The muffler of claim 1, wherein a one of the notches has a first interior angle allowing a first designed extent of deformation of the wall, and an other of the notches has a second interior angle greater than the first interior angle allowing a second designed extent of deformation of the wall greater than the first designed extent of deformation. 6. A vehicle muffler comprising: an internal wall having a first weakening feature formed therein having a configuration designed to promote deformation of the wall at the first weakening feature at a first loading level, and a second weakening feature formed therein having a configuration designed to promote deformation of the wall at the second weakening feature at a second loading level greater than the first level. 7. The muffler of claim 6, wherein each of the first and the second weakening feature is configured to promote deformation of the muffler in a direction substantially parallel to a transverse plane of the vehicle when the muffler is in an installed configuration in a vehicle. 8. The muffler of claim 6, wherein the wall is orientated such that, when the muffler is in an installed configuration in a vehicle, the wall is perpendicular to a transverse plane of the vehicle. 9. The muffler of claim 6, wherein the first and second weakening features comprise respective first and second linear grooves indented into the wall. 10. The muffler of claim 9, wherein the first and second grooves are parallel with one another. 11. The muffler of claim 6, wherein the wall further comprises a flange around at least a portion thereof, the first weakening feature comprises a first notch in the flange, and the second weakening feature comprises a second notch in the flange. 12. The muffler of claim 11, wherein a one of the notches has a first interior angle to allow a first designed extent of deformation of the wall, and an other of the notches has a second interior angle greater than the first interior angle to allow a second designed extent of deformation of the wall greater than the first designed extent of deformation. 13. The muffler of claim 11, wherein the flange is oriented such that, when the muffler is in an installed configuration in a vehicle, a portion of flange at which the notch is located is orientated in a plane substantially parallel to a transverse plane of the vehicle. 14. A vehicle muffler comprising: an internal wall having a first groove indented therein with a configuration designed to deform at a first loading level, and a second groove indented therein and has a configuration designed to deform at a second loading level greater than the first loading level. 15. The muffler of claim 14, wherein the first groove is deeper than the second groove. 16. The muffler of claim 14, wherein the first groove and the second groove are formed in a first face of the wall. 17. The muffler of claim 14, wherein the first groove and the second groove are parallel with one another. 18. The muffler of claim 14, wherein the wall is orientated such that, when the muffler is in an installed configuration in a vehicle, the wall is perpendicular to a transverse plane of the vehicle. 19. The muffler of claim 14, wherein the wall comprises a flange around at least a portion thereof, a first notch is formed in the flange adjacent an end of the first groove, and a second notch is formed in the flange adjacent an end of the second groove. 20. The muffler of claim 19, wherein the flange is oriented such that, when the muffler is in an installed configuration in a vehicle, a portion of flange at which the notch is located is orientated in a plane substantially parallel to a transverse plane of the vehicle.
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이 특허에 인용된 특허 (9)
Mackenzie, Steven K.; Tucker, Eric R., Air duct assembly for engine.
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