Toyota Jidosha Kabushiki Kaisha

Hideki Fukushima

Toshio Murata

Yasuhiko Koda

Takeshi Oya

Shunsuke Niitani

Chikara Okawa

Takeyuki Harada

Takatoshi Sugihara

An exhaust pipe structure includes an exhaust pipe, a branching portion including an inflow port, a first flow path, a second flow path, a first discharge port, and a second discharge port, a first muffler, a first pipe, a second muffler, and a second pipe. The second flow path is lower in position in an up-down direction of a vehicle than the first flow path at a downstream side part of the second flow path including at least a portion of the second discharge port. The second pipe is lower in position in the up-down direction of the vehicle at an upstream side part connected to the second discharge port than an upstream side part of the first pipe connected to the first discharge port.

Exhaust pipe structure

A channel cross-sectional area of a lower side channel is set to be smaller than an upper side channel in a predetermined region and greater than the upper side channel on an upstream side and a downstream side of the predetermined region. Accordingly, an ability to drain condensed water is improved by guiding exhaust gas to the lower side channel and facilitating an increase in a flow rate of the exhaust gas guided to the lower side channel. The exhaust gas flowing in the upper side channel and the lower side channel receives flow resistance from a partition member from an extending portion to a front of a main muffler. Thus, the ability to drain the condensed water can be improved with reduction in pressure loss generated in the exhaust gas.

Exhaust mechanism for vehicle

Growing community of inventors

Okazaki, Japan

Hideki Fukushima