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Exhaust purifying device for internal combustion engine

A technology for exhaust purification and internal combustion engines, which is applied to mechanical equipment, internal combustion piston engines, exhaust devices, etc., can solve the problems of promoting engine oil dilution and increasing the amount of fuel, and achieve the goal of suppressing the increase of engine oil dilution and suppressing the dilution of engine oil Effect

Inactive Publication Date: 2010-12-15
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the amount of fuel mixed into the oil may increase, possibly promoting oil dilution

Method used

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  • Exhaust purifying device for internal combustion engine
  • Exhaust purifying device for internal combustion engine
  • Exhaust purifying device for internal combustion engine

Examples

Experimental program
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Embodiment Construction

[0034] In the following description and drawings, the present invention will be described in detail with reference to exemplary embodiments.

[0035] figure 1 It is a schematic diagram showing the configuration of an internal combustion engine and an intake / exhaust system of an embodiment of the present invention. The internal combustion engine 1 is a diesel engine and is used to drive the vehicle. The piston 3 is provided in the cylinder 2 of the internal combustion engine 1 and is slidable. The intake port 4 and the exhaust port 5 are connected to the combustion chamber at the upper part of the cylinder 2 . The opening portion of the intake port 4 opens to the combustion chamber and is opened / closed by the intake valve 6 . The opening portion of the exhaust port 5 opens to the combustion chamber and is opened / closed by the exhaust valve 7 . The intake port 4 and the exhaust port 5 are connected to an intake passage 8 and an exhaust passage 9, respectively. Furthermore, ...

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PUM

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Abstract

An exhaust gas control apparatus for an internal combustion engine, including a particulate filter which is provided in an exhaust passage of an internal combustion engine, in a case where a filter recovery control is performed by performing sub-fuel injection into a cylinder, at least one of a performing frequency with which the filter recovery control is performed and a performing period duringwhich the filter recovery control is performed is changed according to a degree of dilution of engine oil (S102). Thus, it is possible to perform the filter recovery control for oxidizing and removing the PM deposited in the particulate filter, while suppressing dilution of the engine oil caused by the fuel.

Description

technical field [0001] The invention relates to an exhaust purification device for an internal combustion engine. In particular, the present invention relates to such an exhaust purification device for an internal combustion engine, which includes a special filter arranged in an exhaust passage of the internal combustion engine for trapping particulate matter in the exhaust gas . Background technique [0002] In exhaust gas purification equipment for internal combustion engines, after main fuel injection is performed, auxiliary fuel injection may be performed in cylinders to supply fuel to catalysts in exhaust passages in order to increase the temperature of catalysts, exhaust gas purification of regenerated catalysts ability. [0003] For example, Japanese Patent Application Publication JP(A) No. 2003-120390 discloses a technique in which a NOx catalyst is provided in the exhaust passage of an internal combustion engine, and auxiliary fuel injection is performed to supply...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/025F01N9/00F02D41/02F02D41/40
CPCF02D2250/11F02D41/047Y02T10/44F02D41/405F02D41/029Y02T10/40
Inventor 小乡知由富永浩之桥诘刚
Owner TOYOTA JIDOSHA KK