Switchable successive/secondary boosting structure and control method

A two-stage supercharger and supercharger technology, which is applied in the direction of machines/engines, internal combustion piston engines, mechanical equipment, etc., can solve the problem of unsatisfactory matching of exhaust gas turbochargers and other problems

Active Publication Date: 2015-04-22
HARBIN ENG UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a switchable sequential / two-stage supercharging structure and control method that can solve the problem that the exhaust gas turbocharger and the internal combustion engine are not ideally matched in all working conditions

Method used

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  • Switchable successive/secondary boosting structure and control method
  • Switchable successive/secondary boosting structure and control method
  • Switchable successive/secondary boosting structure and control method

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Embodiment Construction

[0025] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0026] combine Figure 1~4 , the present invention integrates the two supercharging structures of successive supercharging and two-stage supercharging through modification, and proposes a control method for switching between the two supercharging forms, realizing the organic combination of successive supercharging and two-stage supercharging, so that the two The advantages and disadvantages of the two supercharging forms complement each other. The present invention can be used in the supercharging system of two or more exhaust gas turbochargers. Taking two exhaust gas turbochargers as an example, it can realize single turbocharger, two turbochargers in parallel-sequential supercharging, two turbochargers Supercharger series-two supercharging three modes.

[0027] The structure of the device of the present invention comprises a basic supercharger compressor intak...

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Abstract

The invention aims to provide a switchable successive / secondary boosting structure and a control method; two boosting structures of successive boosting and secondary boosting are changed for fusing; the invention further provides a two-boosting mode-switchable control method; the organic combination of the successive boosting and the secondary boosting is realized; and the advantages and the disadvantages of the two boosting modes are complementary. The switchable successive / secondary boosting structure and the control method can be applied to boosting systems of two or more exhaust driven superchargers, and can realize three modes of single turbocharger, two-turbocharger parallel connection-successive boosting and two-turbocharger serial connection-secondary boosting. The switchable successive / secondary boosting structure and the control method can improve the problem of weak matching between the exhaust driven superchargers and all working conditions of internal combustion engines, enhance the power performances of the internal combustion engines, improve the efficiency, reduce the emission, and are specifically suitable for the internal combustion engines with wider working condition ranges.

Description

technical field [0001] The invention relates to a structure of an internal combustion engine, specifically a structure of a supercharged internal combustion engine. Background technique [0002] In order to make the internal combustion engine have high power density, high efficiency, and good emission performance, exhaust gas turbocharging technology is now widely used. Exhaust gas turbocharging technology uses the exhaust gas energy of the internal combustion engine to push the supercharger to compress the intake air of the internal combustion engine, increasing the intake air density, thereby increasing the intake air volume, and improving the scavenging effect. In this way, the utilization rate of exhaust gas energy is improved, the power density of the internal combustion engine is increased, the air-fuel ratio is increased to a certain extent, and the emission of the internal combustion engine is reduced. [0003] With the development of internal combustion engine supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/00F02B37/12
CPCY02T10/12
Inventor 王银燕胡松孙永瑞祖象欢覃玄李俊鹏王净
Owner HARBIN ENG UNIV
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