Throat area regulating device of exhaust manifold

Abstract

The invention discloses a throat area regulating device of an exhaust manifold in the technical field of mechanical design. The throat area regulating device comprises a volume cavity, an elastic component, a rotating body, a division plate, a rotating shaft, a rotating plate and a chain, wherein the longitudinal section of the volume cavity is circular, the longitudinal section of the rotating body is arc-shaped, one end of a third connecting shaft is inlaid on the side wall of the volume cavity after penetrating through the volume cavity, and one end of a first rotating shaft is inlaid on the side wall of a first exhaust manifold after penetrating through the first exhaust manifold. When the pressure of the engine exhaust manifold is higher, the rotating body drives the rotating plate to rotate anticlockwise, the outlet area of the exhaust manifold is relatively large, and the pumping loss of an engine is less; when the pressure of the engine exhaust manifold is lower, the rotating body drives the rotating plate to rotate clockwise, the throat area of the exhaust pipe is relatively small, the pulse energy can be utilized fully, and more available energy in front of a turbine exists. The throat area regulating device is reasonable in design, simple in structure, and applicable to a turbocharger system with one turbine inlet and a side turbine.

Description

technical field [0001] The invention relates to a turbocharging system in the technical field of mechanical design, in particular to a device for adjusting the throat area of ​​an exhaust branch pipe. Background technique [0002] With the development of society and the improvement of environmental protection requirements, the application of engine supercharging technology is becoming more and more extensive. Most of the engines with medium and high power adopt turbocharging technology to improve power and reduce fuel consumption. The two basic types of turbocharging systems are constant pressure supercharging system and pulse supercharging system. Constant pressure supercharging system, each cylinder shares an exhaust pipe with a large volume, the structure of the exhaust pipe system is relatively simple, the pressure in the exhaust pipe is basically kept constant, the pressure is only related to the load and speed of the engine, different cylinder numbers The superchargin...

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Problems solved by technology

[0003] After searching the existing technical literature, it is found that Chinese patent number ZL201020532937.0, patent name: turbocharger device with variable exhaust pipe outlet area, this patent technology provides a device with continuously variable exhaust pipe outlet area , can better take into account the high and low speed conditions of the engine; but the change of the outlet area of ​​the exhaust pipe is realized by the rotation of the rotary handle, which requires adding a special control mechanism to control the rotation of the rotary handle, so that Make the supercharging system structure more complicated

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