JPS61152733U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an enlarged plan view of essential parts showing the turbocharger of a turbocharged engine according to an embodiment of the present invention, FIG. 2 is a plan view showing the entire engine, and FIG.
The figure is a graph showing characteristics of the control valve, and FIG. 4 is a graph showing changes in boost pressure with respect to engine speed. In addition, in the symbols used in the drawings, 12...exhaust manifold, 14...turbocharger, 15...compressor, 16...turbine, 18...partition wall, 1
9... Communication hole, 20... Control valve, 21... Actuator, 22... Controller, 23... Rotation detection sensor.

Claims (1)

[Scope of utility model registration request] The exhaust manifold is equipped with a plurality of exhaust manifolds connected to different cylinders for one turbocharger or an exhaust manifold divided into a plurality of parts, and the exhaust gas of the engine is transported to the plurality of manifolds or the exhaust manifold divided into the plurality of parts. In an engine that uses pulsation of exhaust gas to drive the turbocharger by separately extracting the exhaust gas using a manifold, the plurality of exhaust manifolds or the exhaust manifolds divided into a plurality of parts communicate with each other. and a control valve for controlling communication and blocking of the communication means, and the control valve normally cuts off the communication means, and when the engine speed increases or the boost pressure increases. 1. A turbocharged engine, characterized in that said communication means is brought into communication by said control valve.