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Control system of internal combustion engine

A technology of control system, internal combustion engine, applied in the direction of engine control, internal combustion piston engine, electrical control, etc., to achieve the effect of proper removal

Active Publication Date: 2020-12-18
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such an internal combustion engine equipped with an electric supercharger, when the exhaust gas recirculation passage is connected to the intake passage on the upstream side of the electric supercharger, particulate matter contained in the exhaust gas may accumulate on the electric supercharger. Compressor impellers, motor bearings, and seals

Method used

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  • Control system of internal combustion engine
  • Control system of internal combustion engine
  • Control system of internal combustion engine

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Experimental program
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Embodiment Construction

[0024] ●[The brief overall structure of the control system of the internal combustion engine ( figure 1 )]

[0025] Hereinafter, the form for implementing this invention is demonstrated using drawing. first use figure 1 A brief overall configuration of a control system for an internal combustion engine will be described. In the description of the present embodiment, a four-cylinder engine 10 (for example, a diesel engine) will be used as an example of an internal combustion engine mounted on a vehicle. An intake passage 11 is connected to the engine 10 , and the intake passage 11 introduces intake air to the cylinders 45A to 45D of the engine 10 . Also, an exhaust passage 12 is connected to the engine 10 , and the exhaust passage 12 discharges exhaust gas from the cylinders 45A to 45D. Each of the cylinders 45A to 45D is provided with nozzles 43A to 43D, and the nozzles 43A to 43D are connected to the common rail 41 via fuel pipes 42A to 42D. In addition, the turbo compre...

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PUM

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Abstract

The present invention provides a control system for an internal combustion engine capable of removing deposits adhering to an electric supercharger of an internal combustion engine. The following control system for an internal combustion engine, which includes an electric supercharger (61), drives the electric supercharger step by step in such a manner that the compressor impeller is repeatedly suddenly accelerated and suddenly stopped during the cleaning period after the operation of the internal combustion engine is stopped. It is arranged in the intake passage of the internal combustion engine and has a compressor impeller (61C); a bypass passage (11Z) is provided in the intake passage in order to make the intake air of the internal combustion engine bypass the compressor impeller; a bypass valve (62), It is a valve for opening and closing a bypass passage; an exhaust gas recirculation passage (13A) that returns a part of the exhaust gas in the exhaust passage to an intake passage on the upstream side of the compressor impeller; and a control device (50) ), which controls the electric supercharger and bypass valve according to the operating state of the internal combustion engine.

Description

technical field [0001] The present invention relates to a control system of an internal combustion engine equipped with an electric supercharger. Background technique [0002] In vehicles equipped with internal combustion engines in recent years, due to environmental considerations, there is known a device that returns a part of the exhaust gas to intake air through an exhaust gas recirculation device (EGR device) to reduce nitrogen oxides in the exhaust gas. . However, in a diesel engine equipped with an exhaust gas recirculation device, particulate matter (PM), heavy soot (WS), etc. contained in the exhaust gas adhere to the structure of the internal combustion engine as deposits, causing performance deterioration of the above structure. concerns. Therefore, various cleaning methods for removing the adhering deposits have been proposed. [0003] For example, Patent Document 1 discloses a diesel engine that opens or closes each valve in the intake passage including the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B39/10F02B39/16F02D23/02
CPCF02B39/10F02B39/16F02D23/02F02B37/04F02M26/05F02D41/0007F02D41/0042F02B33/40F02M26/50F02B77/04Y02T10/12F02M26/53F02D23/00F02M26/49F02M26/03
Inventor 大下真贵夫山道智裕梅村聪
Owner TOYOTA IND CORP