Muffler structure for vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTomoki Mabuchi
Life of this patent
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Abstract
The invention obtains a muffler structure for a vehicle which can suppress an emission sound. In a muffler shell for a muffler for a vehicle, there are formed a peripheral joint in which an upper shell and a lower shell corresponding to a plurality of shell structure portions are joined in respective peripheral joint flanges and, and an inter-isolation chamber joint in which the upper shell and the lower shell are joined in inter-isolation chamber joint flanges and in such a manner as to partition a space positioned in an inner side of the peripheral joint into a plurality of isolation chambers and arranged in parallel in a gas flow direction.
Claims20
A muffler structure for a vehicle comprising:
- an upper shell that has a plurality of outer walls formed in such a manner as to be open to a downward side in a vertical direction of a vehicle body and having a longitudinal axis in a gas flow direction;
- and
- a lower shell that has a plurality of outer walls formed in such a manner as to be open to an upward side in the vertical direction of the vehicle body and having a longitudinal axis in the gas flow direction,
- wherein the upper shell and the lower shell are directly joined at respective peripheral edge portions and a portion between the plurality of outer walls, to thereby form a plurality of isolation chambers which are arranged in parallel to a direction that crosses the gas flow direction, the plurality of isolation chambers communicating through a communicating portion that is provided at a joint position partitioning the plurality of isolation chambers, and
- the isolation chambers are formed as a columnar space having a longitudinal axis parallel to the gas flow direction.
A muffler structure for a vehicle comprising:
- an upper shell having an outer wall formed longitudinally in a gas flow direction and formed so as to be open to a downward side in a in a vertical direction of a vehicle body;
- a lower shell having an outer wall formed longitudinally in the gas flow direction and formed so as to be open to an upward side in the vertical direction of the vehicle body, and having a peripheral edge portion joined to a peripheral edge of the upper shell and forming a closed space at an inner side of a joint portion;
- and
- a pipe member formed longitudinally in the gas flow direction, joined to each of the outer wall of the upper shell and the outer wall of the lower shell, and partitioning the closed space into a plurality of isolation chambers which are arranged in parallel to a direction that crosses the gas flow direction, the plurality of isolation chambers communicating through a communicating portion that is provided at a joint position partitioning the plurality of isolation chambers.
Dependencies are inferred from the claim text.