Exhaust system of internal combustion engine
AssigneesToyota Jidosha Kabushiki Kaisha, Futaba Industrial Co., Ltd.
InventorsTomoki Mabuchi, Yutaka Nozawa, Eiji Asai
Life of this patent
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Abstract
In an exhaust system, exhaust manifolds are connected to two banks provided in a V-type engine of a vehicle, respectively, to which front pipes each having a catalytic converter are connected to the exhaust manifolds, respectively. A muffler is provided at an exhaust downstream side of the exhaust pipes, and a rear pipe is further connected to the exhaust downstream side of the muffler. The front pipe has its rear end portion located near a through hole formed in the rear pipe. A path length of one of the front pipes from the bank to the muffler is made shorter than that of the other front pipe.
Claims8
An exhaust system of an internal combustion engine comprising:
- two banks provided in the internal combustion engine;
- a first exhaust pipe and a second exhaust pipe, each connected to two banks respectively;
- a muffler connected to an exhaust downstream side of the first and the second exhaust pipes;
- and
- a third exhaust pipe connected to the -exhaust downstream side of the muffler,
- wherein the first exhaust pipe has its path length from the corresponding bank to the muffler therein shorter than that of the second exhaust pipe;
- and, a rear end portion of the first exhaust pipe is located near an intake port of the third exhaust pipe.
Dependencies are inferred from the claim text.