Exhaust branch pipe outlet area regulating mechanism with chains

Abstract

The invention discloses an exhaust branch pipe outlet area regulating mechanism with chains, and belongs to the field of mechanical design technologies. The exhaust branch pipe outlet area regulating mechanism comprises a cavity, an elastic component, a rotator, a partition plate, rotary shafts, rotary plates and the chains. The longitudinal section of the cavity is circular, the longitudinal section of the rotator is arc-shaped, one end of a third connecting shaft penetrates the cavity and then is inlaid in a side wall of the cavity, and one end of the first rotary shaft penetrates a first exhaust branch pipe and then is inlaid in a side wall of the first exhaust branch pipe. When the pressure of an air inlet pipe of an engine is high, the rotator drives the rotary plates to rotate anticlockwise, the areas of outlets of exhaust branch pipes are large, and the pumping loss of the engine is low; when the pressure of the air inlet pipe of the engine is low, the rotator drives the rotary plates to rotate clockwise, the areas of the outlets of the exhaust branch pipes are small, pulse energy can be sufficiently utilized, and the quantity of early available energy for a turbine is high. The exhaust branch pipe outlet area regulating mechanism has the advantages of reasonable design, simple structure and applicability to a turbo-charging system with a single turbine inlet and a lateral turbine.

Description

technical field [0001] The invention relates to a turbocharging system in the technical field of mechanical design, in particular to an outlet area adjustment mechanism of an exhaust branch pipe with a chain. 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 supe...

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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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