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Controls for booster systems

A technology of control device and supercharging system, applied in electrical control, engine control, combustion engine, etc., can solve problems such as equipment damage

Active Publication Date: 2019-01-15
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These abnormal operations may cause damage to the equipment, so it is necessary to prevent

Method used

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  • Controls for booster systems
  • Controls for booster systems
  • Controls for booster systems

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0073] figure 1 It is a diagram showing the overall configuration of an engine system to which the supercharging system control device according to the first embodiment of the present invention is applied.

[0074] exist figure 1 In the shown engine system 1 of the present embodiment, air (intake air) entering the intake line 4 via an air cleaner not shown flows into the compressor 3 a of the turbocharger 3 (supercharger). The turbocharger 3 is composed of a compressor 3 a arranged in the intake line 4 , a turbine 3 b arranged in the exhaust line 6 , and a rotor 3 c connecting the compressor 3 a and the turbine 3 b. The turbine 3b is rotationally driven by the exhaust energy of the exhaust gas discharged from the engine 2, and the compressor 3a is coaxially driven accordingly, whereby intake air flowing into the compressor 3a is compressed.

[0075] The intake air compressed by the compressor 3a is cooled in the intercooler 8, and its intake air volume is adjusted by the thr...

no. 2 approach ＞

[0125] Figure 12 It is a diagram showing the overall configuration of an engine system to which a control device for a supercharging system according to a second embodiment of the present invention is applied. In addition to including the bypass line 14 and the exhaust bypass valve 12, the engine system 1a of this embodiment has the same figure 1 The engine system 1 of the illustrated embodiment has basically the same structure. Therefore, the same reference numerals are assigned to the same structures, and detailed descriptions are omitted.

[0126] Such as Figure 12 As shown, the bypass line 14 is connected to the exhaust gas line 6 in such a way that the turbine 3 b of the turbocharger 3 is bypassed. Furthermore, an exhaust bypass valve 12 is provided on the bypass line 14, and by adjusting the opening degree of the exhaust bypass valve 12, the flow rate of the exhaust gas flowing to the turbine 3b and the amount of exhaust gas flowing through the bypass line 14 can be...

no. 3 approach ＞

[0140] Figure 16 It is a diagram showing the overall configuration of an engine system to which a control device for a supercharging system according to a third embodiment of the present invention is applied. The engine system 1 b of the present embodiment has basically the same configuration as the engine system of the above-described embodiment except for the electric turbocharger 5 and the intake side bypass line 18 . Therefore, the same symbols are assigned to the same structures, and detailed descriptions are omitted.

[0141] Such as Figure 16 As shown, the electric turbocharger 5 is composed of an electric compressor 5a disposed in the intake line 4 downstream of the compressor 3a of the turbocharger 3, a motor 5b that rotationally drives the electric compressor 5a, and a motor connected to the electric compressor. 5a, a rotor 5c of a motor 5b, and an inverter 5d (rotational speed control means) for controlling the rotational speed of the motor 5b. The intake air f...

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PUM

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Abstract

A control device (10) for a supercharging system, the supercharging system is used for supplying compressed intake air to an engine (2), wherein the control device includes an engine controller (10A) and an engine signal input unit (10A1) ) and an engine control unit (10A2) for controlling the operating state of the engine; a turbo controller (10B), having a turbo signal input unit (10B1) and a turbo control unit (10B2), the turbo control unit (10B2) including a calculation and a supercharger The turbo control command value calculation unit (10B2a) of the turbo control command value corresponding to the target supercharging pressure of (3). By outputting the turbo control command value calculated by the turbo control command value calculation unit to the supercharging pressure control means, the supercharging pressure control means is controlled so that the supercharging pressure of the supercharger becomes the target supercharging pressure.

Description

technical field [0001] The present disclosure relates to a control arrangement for a boost system for supplying compressed intake air to an engine. Background technique [0002] As a technique for increasing engine output, a method (supercharging) of compressing intake air with a supercharger and supplying the compressed intake air to an engine is known, and is widely used in automobile engines and the like. Depending on its operating state, the supercharger may transiently become in an abnormal operating state such as surge or overspeed. These abnormal operations may cause damage to the equipment and therefore need to be prevented as much as possible. [0003] Patent Document 1 discloses an invention as a control device for a turbocharger that predicts the occurrence of surge from the operating state of the turbocharger, opens the exhaust bypass valve just before the surge occurs, and reduces the The turbo flows the exhaust flow, thereby suppressing surge. [0004] Paten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/18F02B37/013F02B37/04F02B37/10
CPCF02B37/013F02B37/04F02B37/18F02B2037/125F02B37/24F02D41/266F02D41/0007F02D2200/0406F02D2200/0614F02D41/1401F02D41/1446F02D2041/001F02D2041/141F02D2041/1419F02D2041/1422F02D2200/602F02B37/186Y02T10/12F02D41/26
Inventor 高柳恒安秉一
Owner MITSUBISHI HEAVY IND LTD