Tail pipe
AssigneeFutaba Industrial Co., Ltd.
InventorsYuki Noumi, Katsuhiko Kainuma
Life of this patent
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Abstract
Provided is a tail pipe in which a silencing effect at a discharge port is obtained. One aspect of the present disclosure is a tail pipe including: an inner tube including a discharge port configured such that an exhaust gas is discharged therefrom; an outer tube arranged so as to form a space between the outer tube and the inner tube by surrounding an outer peripheral surface of the inner tube, an upstream end of the outer tube in a flow direction of the exhaust gas being closed; and at least one communication hole allowing communication between an interior of the inner tube and the space.
Claims8
A tail pipe comprising:
- an inner tube comprising a discharge port configured such that an exhaust gas is discharged therefrom;
- an outer tube arranged so as to form a space between the outer tube and the inner tube by surrounding an outer peripheral surface of the inner tube, an upstream end of the outer tube in a flow direction of the exhaust gas being closed;
- and
- at least one communication hole allowing communication between an interior of the inner tube and the space,
- wherein the inner tube comprises an enlarged diameter portion enlarged in diameter toward the discharge port, and
- wherein the enlarged diameter portion comprises:
- a gently enlarged portion having a first taper angle;
- and
- a sharply enlarged portion having a second taper angle larger than the first taper angle, the sharply enlarged portion being arranged in only a part of the inner tube in a circumferential direction thereof.
Dependencies are inferred from the claim text.