High-speed working condition pumping reducing device

Abstract

A high-speed working condition pumping reducing device belongs to the technical field of internal combustion engines. The high-speed working condition pumping reducing device comprises an engine air inlet pipe, a pressurizer, an engine, an engine exhausting pipe, a turbine, a connection pipe, an adjusting cavity, a rotating shaft, a rotating plate, a control cavity, an inner pipe, a spring, a rotating body and a stressing plate, wherein the adjusting cavity and the control cavity are coaxially connected by the rotating shaft; the stressing plate is connected with the left wall surface of a fixed body by the spring; one end of a second connection pipe is communicated with an inner cavity of the control cavity; the other end of the second connection pipe is connected with the engine air inlet pipe between an intercooler and a throttle valve. According to the high-speed working condition pumping reducing device, when the engine is operated under a high-speed working condition, the front exhausting volume of the turbine is larger, the pumping loss is lower and the oil consumption is lower; when the engine is operated under a low-speed working condition, the front exhausting volume of the turbine is smaller, pulse energy can be sufficiently utilized and the oil consumption is lower. The high-speed working condition pumping reducing device has a reasonable design and a simple structure, and is suitable for an optimal design of a turbine pressurizing engine exhausting system.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and in particular relates to an air pumping device for high-speed working conditions that can realize 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 the...

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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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