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By-pass valve actuator of turbocharger

A turbocharger and actuator technology, which is applied in the field of turbocharger bypass valve actuators, can solve the problems of slow pressure adjustment response, limited boost pressure adjustment, and inability to adjust pressure, etc., to solve the problem of response delay and control Good precision, the effect of improving control precision

Inactive Publication Date: 2010-06-23
HUNAN TYEN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the actuator of this turbocharger bypass valve has only one spring, the pressure adjustment response is slow when it works, and the hysteresis is serious. The pressure cannot be adjusted in time according to the engine operating conditions, and the adjustment of the boost pressure is limited.

Method used

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  • By-pass valve actuator of turbocharger
  • By-pass valve actuator of turbocharger
  • By-pass valve actuator of turbocharger

Examples

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Embodiment

[0021] Such as figure 1 Shown: A turbocharger bypass valve actuator, which includes an actuator housing 1, a diaphragm 2, an inner piston housing 3, an inner piston 4, an actuator push rod 5, an inner piston upper spring 6 and an inner piston The lower spring 7; the diaphragm 2 is installed in the actuator housing 1 and separates the inner cavity of the actuator housing 1 into a pressure chamber 11 and a piston chamber 12. The air pressure port 13 connected to the compressor of the turbocharger, the inner piston housing 3 is installed in the piston cavity 12 of the actuator housing 1, and the inner piston housing 3 is provided with an air hole 31; one end of the actuator push rod 5 is connected to the The inner piston housing 3 is fixedly connected, and its other end passes through the hole of the actuator housing 1, and the other end of the actuator push rod 5 passes through the actuator housing 1 and is connected with the turbocharger bypass valve; The piston 4 and the inn...

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Abstract

The invention provides a by-pass valve actuator of a turbocharger, which comprises an actuator case (1), a membrane sheet (2), an inner piston case (3), an inner piston (4), an actuating push rod (5), an inner piston upper spring (6) and an inner piston lower spring (7), wherein the inner piston (4) and the inner piston upper spring (6) are arranged in the inner piston case (3), the inner piston (4), the inner piston upper spring (6) and the inner piston lower spring (7) are all sheathed and arranged on the actuating push rod (5), the inner piston (4) is positioned between the inner piston upper spring (6) and the inner piston lower spring (7), and the elasticity of the inner piston upper spring (6) is smaller than that of the inner piston lower spring (7). The by-pass valve actuator has good control precision on the pressure, and has sensitive responsivity, and in addition, the structure is simple and reliable.

Description

technical field [0001] The invention relates to a turbocharger bypass valve assembly, in particular to a turbocharger bypass valve actuator. Background technique [0002] Turbochargers have been used more and more widely as an effective means to improve engine power, economy, and emissions. Due to the complex structure and high cost of variable cross-section (geometry) turbochargers, the turbochargers with bypass valves The structure of the turbocharger is simple, reliable and effective, so the turbocharger with a bypass bleed valve is commonly used at present. The design of the turbocharger bypass valve is mainly because the turbocharger is driven by the power of exhaust gas. When the throttle valve is reduced or closed, the turbine blade (compressor impeller) continues to rotate under the action of inertia. At this time, the air pressure in the intake pipeline will increase rapidly. In order to protect the supercharging system, when the pressure reaches a certain limit va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/22F02B37/18F16K31/122
CPCY02T10/144Y02T10/12
Inventor 冯世虎徐晓波欧永健兰新
Owner HUNAN TYEN MACHINERY
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