Two-pressurization-system combination device

Abstract

The invention belongs to the technical field of internal combustion engines and provides a two-pressurization-system combination device. The two-pressurization-system combination device comprises an engine intake pipe, a supercharger, an engine, an engine exhaust pipe, a turbine, connecting pipes, adjusting cavities, a moving plate, a spring, fixed plates and a rotating shaft, wherein the first adjusting cavity is coaxially connected with the second adjusting cavity through the rotating shaft, the spring is arranged on the counterclockwise rotation side of a second rotating plate and connected with the second rotating plate and the second fixed plate, one end of the second connecting pipe is communicated with the second adjusting cavity, and the other end of the second connecting pipe is communicated with the engine intake pipe between an air compressor and an intercooler. According to the two-pressurization-system combination device, when the engine runs under a high speed working condition, the front exhaust capacity of the turbine is large, pumping loss is small, and oil consumption is low; when the engine runs under a low speed working condition, the front exhaust capacity of the turbine is small, pulse energy can be used sufficiently, and oil consumption is low. The two-pressurization-system combination device is reasonable in design, simple in structure and suitable for optimization design of turbo supercharged engine exhaust systems.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to a combination device of two supercharging systems capable of realizing the self-regulation of the volume of the exhaust pipe of the supercharging 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 ...

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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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