Patent ID: 11927123
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Environmental technology (Chemistry)
Classification: CPC F | IPC F

Claim 17:
18. A vehicle exhaust system mounted to a vehicle, comprising:
an inner pipe in which exhaust gas from an internal combustion engine flows, the inner pipe includes a first inner pipe end and an opposite second inner pipe end; and
an outer pipe surrounding a part of the inner pipe, the outer pipe includes a first outer pipe end and an opposite second outer pipe end,
wherein the first outer pipe end of the outer pipe is formed to have a diameter smaller than that of other portions of the outer pipe, and the first outer pipe end is fixed to an outer surface of the inner pipe adjacent the first inner pipe end,
a region of the outer pipe from a second outer pipe end before the first outer pipe end is a free region unattached to the outer surface of the inner pipe, and
the second inner pipe end extends beyond the second outer pipe end.