A variable air exhaust through flow area air exhaust
pressure control type adjusting mechanism for a turbocharged engine belongs to the technical field of
mechanical design and comprises an
air compressor, an engine, a
turbine, a volume cavity, a rotation body, a spring, a rotation rod, a rotation shaft and a rotation plate. The longitudinal sections of the volume cavity and the rotation body are both in arc shapes, the rotation plate is installed in an air
exhaust pipe, the rotation plate and the rotation shaft are fixed together, the
left wall of the rotation body is connected with the
left wall of the volume cavity through the spring, and two ends of a connection
pipe are respectively communicated with the right wall of the volume cavity and the air
exhaust pipe. When pressure in the air
exhaust pipe in front of the rotation plate is high, the rotation body drives the rotation plate to rotate in a counterclockwise mode, pumping loss of the engine is small, and the whole performance is excellent. When pressure in the air exhaust
pipe in front of the rotation plate is low, the rotation body drives the rotation plate to rotate in a
clockwise mode, available energy in front of the
turbine is more, air
inlet pressure of the engine is high, and the whole performance is excellent. The variable air exhaust through flow area air exhaust
pressure control type adjusting mechanism for the turbocharged engine is reasonable in design, simple in structure and suitable for a
turbine single inlet turbocharged
system.