Adjustable nozzle for turbosupercharger

Abstract

The invention provides an adjustable nozzle that can improve the reaction sensitivity of a supercharged engine effectively and is applicable to a variable turbosupercharger. The adjustable nozzle comprises guide blades, a blade seat, a driving disk, a driving rocker arm and driven rocker arms, wherein the guide blades are mounted on the blade seat; the driving disk and the blade seat are mounted coaxially through a plurality of rollers; one end of each driven rocker arm and the guide blades are mounted coaxially; the other ends of the driven rocker arms are arranged in a notch of the driving disk in a clamping manner; when the driving rocker arm drives the driving disk to rotate, the driving disk transmits rotary motion to the driven rocker arms through the rollers; the driven rocker arms drive the guide blades to rotate, and are elastic arms; and one end of each elastic arm is elastically compressed and arranged in the notch of the driving disk in a clamping manner, and contacted with the driving disk all the time. The adjustable nozzle is simple and easy in structure, and an effect of technical performance improvement is remarkable.

Description

Technical field [0001] The invention involves the technology field of turbocharged engines, especially a adjustable nozzle for variable geometric turbochargers. Background technique [0002] Existing turbochargers, such as figure 1 and figure 2 It shows a turbine 4, which is shown in the impeller 7 and a turbine 4 installed on the same axis. The turbine uses the exhaust gas of the internal combustion engine to generate power.Among them, the power of the turbine is provided to the impeller 7 to compress the surrounding air and provide it to the internal combustion engine; the bearings and lubrication systems are fixed in the middle shell 6.In a fixed geometric turbine, the exhaust gas directly enters the turbine 4 from the air intake.And in the variable geometric shape turbines, such as figure 1 It is shown that a set of nozzles is surrounded by vortex 5 and turbine 4. These nozzles are formed between diversion blades 1 and side walls; diversion blades 1 is driven by the driver di...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing variable supercharging turbine mechanism, in order to rotate and move smoothly clockwise or counterclockwise, must have a certain gap between its rigid arm 8 and the drive disc 3, which causes when running, especially when turning There will be hysteresis, which will affect the engine's ability to respond to load changes or vehicle speed changes.

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