Multicylinder engine exhaust device

Abstract

Abstract PURPOSE:To prevent the generation of a trough in output by dividing the exhaust manifold of a multicylinder engine and half-way the inside of an exhaust pipe on its lower course, into two parts in such a way that exhaust gas from cylinders, which are mutually close in the firing order, may be collected together. CONSTITUTION:Exhaust pipes 10, which are introduced out of each cylinder of a multicylinder engine, are connected to a manifold 11 in a condition of 10a, 10b, 10c, 10d as shown in the figure, in accordance with the firing order of the cylinders. A partition plate 13a is provided inside the manifold 11. Also, a partition plate 13b is provided inside an exhaust pipe 12, which is provided on the rear side of the manifold 11. Exhaust gas is discharged from the exhaust pipes 10, in the order of 10a, 10b, 10c, and 10d, into the manifold 11, and exhausted outward through the exhaust pipe 12 and a muffler. Thereby, the characteristics of output can be improved due to the streamlining action and the regulation of the pulsation of exhaust by means of the partition plates 13a, 13b, preventing the generation of a trough in output.

Inventors

• 👤 Kazuhiko Onishi
• 👤 一彦 大西
• 👤 Masataka Nishigaki
• 👤 昌登 西垣

Bibliographic Details