Sequential turbocharging system anti-surge control device and control method

A technology of sequential boosting and control devices, which is applied in the direction of machines/engines, internal combustion piston engines, mechanical equipment, etc., and can solve problems such as surges and air valves not opening on time

Inactive Publication Date: 2010-05-05
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

For the sequential pressurization system, opening the gas valve and air valve at a reasonable time can avoid compressor surge, but in many cases, the control of the delay time between the gas valve and air valve is affected by too many factors, such as Contr

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  • Sequential turbocharging system anti-surge control device and control method
  • Sequential turbocharging system anti-surge control device and control method
  • Sequential turbocharging system anti-surge control device and control method

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Embodiment Construction

[0015] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0016] to combine figure 1 with figure 2 , The anti-surge control device of the sequential supercharging system consists of diesel engine speed sensor 8, 1# turbocharger speed sensor 4, 2# turbocharger speed sensor 12, 1# compressor outlet pressure sensor 5, 2# compressor Compressor outlet pressure sensor 13, 1# compressor inlet air flowmeter 2, 2# compressor inlet air flowmeter 14, 1# air circulation valve 1, 2# air circulation valve 15, air bypass valve 7, air valve 10, Gas valve 11, air circulation pipeline 3, air bypass pipeline 6, diesel engine 9, signal conditioning module, signal acquisition module, signal processing module, memory module, valve body driving module.

[0017] figure 1 The arrows in are pointing to the gas flow direction.

[0018] The diesel engine speed sensor 8 is used to measure the diesel engine speed and provide parameters for surge...

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Abstract

The invention provides a sequential turbocharging system anti-surge control device and a control method. The sequential turbocharging system anti-surge control device is composed of a diesel engine speed transducer, a turbo-charger speed transducer, a pressure pickup, an air flowmeter, an air valve, a gas valve, an air circulating valve, an air bypass valve, an air circulating pipeline, an air bypass pipeline, a signal conditioning module, a signal acquiring module, a signal processing module, a storing module, an electromagnetic module and a valve driving device. The method is as follows: acquiring signals of each sensor by a control device; judging whether the interval time of the opening of the gas valve and the air valve is in the allowable range; comparing the detected operation point information with a set control line to obtain whether a surge indication exists or not, and giving corresponding instruction to regulate the air circulating valve and the air bypass valve. The invention can greatly reduce surge events taking place in the process of diesel engine sequential turbocharging system conversion, prolonging the service lift of the turbo-charger and improving transient performance of the diesel engine sequential turbocharging system in conversion process.

Description

technical field [0001] The invention relates to the turbocharging technology of diesel engines, in particular to the anti-surge technology of successive turbocharging systems of diesel engines. Background technique [0002] One of the most effective means to increase the power per liter of a diesel engine is to increase the supercharging degree. However, as the boost ratio increases, the matching contradiction between the turbocharger and the diesel engine becomes more prominent. The turbocharger cannot meet the needs of the diesel engine in all working conditions, resulting in insufficient partial load torque and increased heat load. Some special supercharging systems have been developed to improve the low-load performance of highly supercharged diesel engines, and the sequential supercharging system is one of them. Its basic working principle is to adopt a plurality of small turbochargers, which are put into operation sequentially with the improvement of the working condi...

Claims

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Application Information

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IPC IPC(8): F02B37/12
CPCY02T10/144Y02T10/12
Inventor 杨传雷王银燕冯永明王贺春张鹏奇
Owner HARBIN ENG UNIV
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