| 摘要 |
An inertia supercharger includes a pair of first collection passages (33A, 33B) connected respectively to the intake manifolds (32A, 32B) and a single second collection passage (34) connected to the first collection passages (33A, 33B). A turbocharger (35) includes a turbine (37) coupled to the exhaust manifold (38) and a compressor (36) coupled to the second collection passage (34). The inertia supercharger and the turbocharger (35) have different ranges of engine RPM in which the volumetric efficiency of the engine (31) is improved. The first collection passages (33A, 33B) each have an inside diameter D and a joined by a wall having a radius R, the radius R and the diameter D having the relationship R/D / 0.05. The opening and closing of the valve (40) in the passage (39) connecting the first collection passages (33A, 33B) provide different ranges of engine RPM over which the volumetric efficiency is improved. <IMAGE> |
