Pulse energy increasing device in low-speed working condition

Abstract

The invention discloses a pulse energy increasing device in a low-speed working condition and belongs to the technical field of internal combustion engines. The pulse energy increasing device in the low-speed working condition comprises an engine gas feeding pipe, a supercharger, an engine, an engine gas discharging pipe, a turbine, a connection pipe, a regulation cavity, a rotation shaft, a rotation plate, a control cavity, an inner pipe, a spring, a rotation body and a stressed plate, wherein the regulation cavity and the control cavity are coaxially connected with each other through the rotation shaft; the stressed plate is connected with the left wall surface of a fixing body through 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 gas discharging pipe between a catalyst pack and a silencer. According to the pulse energy increasing device, when the engine runs under the high-speed working condition, the turbine is relatively large in front gas discharging capacity, the pumping loss is relatively low, and the oil consumption is relatively low; when the engine runs under the low-speed working condition, the turbine is relatively small in front gas discharging capacity, the pulse energy can be fully used, and the oil consumption is relatively low. The pulse energy increasing device is reasonable in design, simple in structure and suitable for optimization design of a gas discharging system of a turbo supercharged engine.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, and specifically relates to a low-speed operating condition pulse increasing kinetic energy 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...

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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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