Exhaust pipe structure
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTadashi Kondo, Junichi Yamaguchi, Katsuro Arimura
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Abstract
An exhaust pipe structure has, under a floor of a vehicle, an exhaust passage for exhaust gas discharged from a vehicle-installed engine, and at least one muffler is provided on an intermediate portion of the exhaust passage. The at least one muffler includes a main muffler having the greatest muffler capacity. An external cylinder forming an outer shell portion of the main muffler has a circular sectional shape having a diameter of 100 mm to 150 mm, or a sectional shape that is substantially equal to an area of the circular sectional shape. The external cylinder has a length of 800 mm to 12000 mm. The main muffler is disposed in a tunnel portion that is formed between the front wheels and the rear wheels.
Claims33
An exhaust pipe structure comprising:
- an exhaust passage for exhaust gas discharged from a vehicle-installed engine that is provided below a floor of a vehicle;
- and
- at least one muffler provided on an intermediate portion of the exhaust passage,
- wherein the at least one muffler includes a main muffler having the greatest muffler capacity among the at least one muffler, and
- wherein the main muffler has an external cylinder forming an outer shell portion of the main muffler, and
- wherein the external cylinder has a circular sectional shape having a diameter of 100 mm to 150 mm, or a sectional shape that is substantially equal to an area of the circular sectional shape, and the external cylinder has a length of 800 mm to 1200 mm.
An exhaust pipe structure comprising:
- an exhaust passage for exhaust gas discharged from a vehicle-installed engine that is provided below a floor of a vehicle;
- and
- at least one muffler provided on an intermediate portion of the exhaust passage,
- wherein the at least one muffler includes a main muffler having the greatest muffler capacity among the at least one muffler, and
- wherein the main muffler has an external cylinder forming an outer shell portion of the main muffler, and
- wherein the external cylinder has a sectional area perpendicular to a direction of an axis of the external cylinder which is in a range of 2500π mm2 to 5625π mm2, and the external cylinder has a length in a range of 800 mm to 12000 mm.
Dependencies are inferred from the claim text.