Two-stage supercharging system, engine and engine intake and exhaust pressure difference control method

A supercharging system and engine technology, applied to engine components, combustion engines, machines/engines, etc., can solve problems such as inability to adapt to engine intake pressure and intake-exhaust pressure difference

Pending Publication Date: 2021-05-25
CSSC POWER INST CO LTD
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a two-stage supercharging system, an engine and a method for controlling the pressure difference between intake and exhaust ...

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  • Two-stage supercharging system, engine and engine intake and exhaust pressure difference control method
  • Two-stage supercharging system, engine and engine intake and exhaust pressure difference control method
  • Two-stage supercharging system, engine and engine intake and exhaust pressure difference control method

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Embodiment Construction

[0047] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the technical field of engines, and particularly discloses a two-stage supercharging system, an engine and an engine intake and exhaust pressure difference control method. The two-stage supercharging system comprises a first turbocharger, a second turbocharger and an exhaust bypass device, wherein the first turbocharger comprises a first air compressor; the second turbocharger comprises a second air compressor; the first air compressor and the second air compressor are sequentially arranged between an air inlet and the engine at intervals; a first air cooler is arranged between the first air compressor and the second air compressor and provided with a temperature adjusting assembly; the exhaust bypass device is used for adjusting the amount of waste gas passing through the first turbocharger and/or the second turbocharger; a first pressure sensor and a second pressure sensor are used for detecting the intake pressure and the exhaust pressure of the engine correspondingly; and a controller controls the temperature adjusting assembly through data of the first pressure sensor and the second pressure sensor. By means of the arrangement, the intake pressure and the intake and exhaust pressure difference of the engine can be effectively, independently and accurately adjusted.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a two-stage supercharging system, an engine and a method for controlling the pressure difference between intake and exhaust of the engine. Background technique [0002] Engine power continues to increase, and turbocharging is an important means to increase engine power. Limited by the technology of the supercharger itself, it is difficult to greatly increase the pressure ratio of a single-stage supercharging system. Therefore, the application of the two-stage supercharging system on the engine is gradually increasing. [0003] The supercharging pressure output by the supercharging system, that is, the intake pressure of the engine, is an important parameter of the engine, which directly affects the combustion and performance of the engine. It is easily affected by the ambient intake temperature and pressure. Too high supercharging pressure will cause The mechanical load such as ...

Claims

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Application Information

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IPC IPC(8): F02B29/04F02B37/007F02B37/22F02B77/08
CPCF02B29/0493F02B29/0462F02B29/0443F02B29/0475F02B37/22F02B37/007F02B77/08F02B77/089Y02T10/12
Inventor 钱跃华
Owner CSSC POWER INST CO LTD
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