Suzuki Motor Corporation

Chiaki Suzuki

Jun Ito

Morio Kishimoto

First to fourth exhaust passages are provided in a raw blank of a cylinder block, which can be used for both a first exhaust route and a second exhaust route, one of which is selected for use as an exhaust passage. In the first exhaust route, a fifth exhaust passage couples between opening ends of the first and second exhaust passages and is formed in a separate member from the cylinder block, exhaust gas is allowed to flow via the fourth, first, fifth, second, and third exhaust passages, and a catalyst is placed in the exhaust passages. In the second exhaust route, a communication hole is provided in a partition wall between the fourth exhaust passage and the second exhaust passage while the opening ends of the first and second exhaust passages are closed, and the exhaust gas is allowed to flow via the fourth, second, and third exhaust passages.

Growing community of inventors

Hamamatsu, Japan

Chiaki Suzuki