Pipe permitted extending mechanism

Abstract

The invention provides a pipe permitted extending mechanism, and belongs to the technical field of internal combustion engines. The pipe permitted extending mechanism comprises an engine air inlet pipe, a supercharger, an engine, an engine exhaust pipe, a turbine, connection pipes, an adjusting cavity, a rotating shaft, a rotating plate, a control cavity, internal pipes, a spring and a rotating body. The adjusting cavity and the control cavity are coaxially connected through the rotating shaft. The upper wall face of a second internal pipe is connected with a partition plate through the spring. One end of a second connection pipe penetrates through a fixed body and then is communicated with a first internal pipe, and the other end of the second connection pipe is connected with the engine air inlet pipe between an intercooler and an air damper. According to the pipe permitted extending mechanism, when the engine operates under a high-speed working condition, the exhaust volume before the turbine is larger, the air pumping loss is smaller, and oil consumption is lower; when the engine operates under a low-speed working condition, the exhaust volume before the turbine is smaller, the pulse energy can be fully utilized, and oil consumption is lower. The pipe permitted extending mechanism is reasonable in design, simple in structure and suitable for optimal design of a turbocharged engine exhaust system.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to a pipeline quasi-extending mechanism capable of realizing the self-regulation of the volume of the exhaust pipe of a supercharged engine. Background technique [0002] The turbocharging system mainly includes a pulse supercharging system and a constant pressure supercharging system. In the constant-pressure supercharging system, each cylinder shares a large-volume exhaust pipe. The structure of the exhaust pipe system is relatively simple. The pressure in the exhaust pipe is basically kept constant, and the pressure is only related to the load and speed of the engine. The constant pressure supercharging system has less pumping loss, higher turbine efficiency and better performance under high-speed conditions; however, it cannot fully utilize the exhaust pulse energy under low-speed conditions. Pulse supercharging system, according to the firing se...

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Problems solved by technology

[0003] After searching the existing literature, it is found that the patent application number is 200810203032.6, which is called the patented technology of the turbocharger device that uses the rotation of the partition to adjust the volume of the exhaust pipe. It provides a continuous variable volume of the exhaust pipe by using a rotating plate. technology, but its rotation needs to be done manually, and it cannot achieve self-rotation

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