Pre-turbine fluid compression and release system

Abstract

The invention belongs to the technical field of internal combustion engines and provides a pre-turbine fluid compression and release system. The pre-turbine fluid compression and release system comprises an engine air inlet pipe, a supercharger, an engine, an engine exhaust pipe, a turbine, connecting pipes, an adjusting cavity, a rotary shaft, a rotary plate, a control cavity, internal pipes, a spring and a rotating body. The adjusting cavity and the control cavity are coaxially connected through the rotary shaft. The upper wall face of the second internal pipe is connected with a partition board through the spring. One end of the second connecting pipe is communicated with an inner cavity of the control cavity. The other end of the second connecting pipe is connected with the engine exhaust pipe between a catalysis bag and a silencer. When the engine operates on a high-speed working condition, the pre-turbine exhaust volume is large, pumping loss is small, and oil consumption is low; when the engine operates on a low-speed working condition, the pre-turbine exhaust volume is small, pulse energy can be fully utilized, and oil consumption is low. The pre-turbine fluid compression and release system is reasonable in design, simple in structure and applicable to optimization design of a turbine supercharged engine exhaust system.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to a swirl prefluid scaling system capable of self-adjusting the volume of an 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 sequence of each cylinder,...

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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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