Sectional travel characteristic pneumatic actuator of turbocharger

A technology of turbochargers and pneumatic actuators, which is applied in the direction of machines/engines, combustion engines, internal combustion piston engines, etc., and can solve the problems that the main core rod is not centered, complicated, and prone to force distortion.
CN102852628AActive Publication Date: 2013-01-02康跃科技(山东)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
康跃科技(山东)有限公司
Publication Date
2013-01-02

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Abstract

The invention discloses a sectional travel characteristic pneumatic actuator of a turbocharger. The sectional travel characteristic pneumatic actuator comprises an upper housing and a lower housing, wherein a rubber diaphragm is arranged between the upper housing and the lower housing; a cavity between the upper housing and the lower housing is divided into two hollow chambers through the rubber diaphragm, and the two hollow chambers are respectively a first hollow chamber and a second hollow chamber which are not intercommunicated; the second hollow chamber is internally provided with a diaphragm seat at a position close to the rubber diaphragm; a mandrel is connected to the diaphragm seat; two springs with different elastic coefficient are arranged on the mandrel, which are respectively an internal spring and an external spring; the external spring is sleeved outside the internal spring; and an internal spring locking mechanism is arranged on the mandrel. With the adoption of the sectional travel characteristic pneumatic actuator of the turbocharger provided by the invention, various travel characteristics can be matched, therefore, the performance of a turbocharger can be adjusted to achieve the best state as far as possible.
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Description

technical field

[0001] The invention relates to a turbocharger pneumatic actuator device, in particular to a turbocharger segmented stroke characteristic pneumatic actuator device, which belongs to the field of internal combustion engines. Background technique

[0002] With the continuous development of national emission regulations and user needs, the supercharging technology of engines, especially diesel engines, has also made great progress. The structure of the exhaust gas turbocharger has developed from the traditional fixed section to the exhaust gas bypass that can take into account the low-speed torque of the engine. Structural turbochargers. After the implementation of the National III emission regulations, people's demand for engine turbochargers that can take into account the high and low speed performance of the engine has become more and more intense. The variable cross-section turbocharger has become the focus of research and development at home and abroad. ...

Claims

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