Intake air extraction device for intercooling rear engine

Abstract

The invention belongs to the technical field of internal combustion engines and discloses an intake air extraction device for an intercooling rear engine. The device comprises an air inlet pipe of the engine, a booster, the engine, an exhaust pipe of the engine, a turbine, a connecting pipe, an adjusting cavity, a rotary shaft, a rotary plate, a control cavity, an internal pipe, a spring, a rotary body and a force plate, wherein the adjusting cavity and the control cavity are coaxially connected through the rotary shaft, the force plate is connected with the left wall of a fixed body through the spring, one end of a second connecting pipe penetrates through the fixed body and then is communicated with a first internal pipe, and the other end of the second connecting pipe is connected with the air inlet pipe, between an intercooler and a throttle valve, of the engine. According to the device, when the engine operates at a high speed, the exhaust volume of the front portion of the turbine is large, pumping loss is low, and oil consumption is low; when the engine operates at a low speed, the exhaust volume of the front portion of the turbine is small, pulse energy can be fully utilized, and oil consumption is low. The device is reasonable in design, simple in structure and suitable for optimal design of an exhaust system of a turbocharged engine.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to an intercooled engine air intake and extraction device capable of realizing self-regulation of 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 ...

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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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