Piston exhaust pressure controller

Abstract

The invention belongs to the technical field of internal combustion engines, and discloses a piston exhaust pressure controller which comprises air inlet pipes of an engine, a supercharger, the engine, exhaust pipes of the engine, a turbine, connecting pipes, a regulating cavity, a rotary shaft, a rotary plate, a control cavity, internal pipes, a spring and a rotator. The regulating cavity and the control cavity are coaxially connected with each other by the rotary shaft, one end of the second connecting pipe is communicated with an internal cavity of the control cavity, the other end of the second connecting pipe is connected with the certain exhaust pipe of the engine, and the certain exhaust pipe of the engine is arranged between the engine and the turbine. The piston exhaust pressure controller has the advantages that the turbine is high in forward exhaust volume when the engine runs under high-speed working conditions, and accordingly pumping loss and oil consumption are low; the turbine is low in forward exhaust volume when the engine runs under low-speed working conditions, accordingly, pulse energy can be sufficiently utilized, and the oil consumption is low; the piston exhaust pressure controller is reasonable in design, simple in structure and applicable to optimally designing exhaust systems of turbine supercharged engines.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, in particular to a piston exhaust pressure controller 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 the firing sequence of each cy...

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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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