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Control apparatus for internal combustion engine

A technology of control device and internal combustion engine, applied in the direction of internal combustion engine testing, engine control, internal combustion piston engine, etc., can solve problems such as flameout and inability to resist

Active Publication Date: 2015-07-22
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to this technology, in the case where a large amount of EGR gas already exists in the intake passage at the start of deceleration of the engine, the amount of EGR gas flowing into the cylinder becomes excessive, which may cause misfire
In addition, the above-mentioned technology cannot resist the situation that EGR gas remains in the intake passage until the engine is re-accelerated after the engine deceleration is performed, thereby possibly causing misfire to occur at the time of engine re-acceleration

Method used

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  • Control apparatus for internal combustion engine
  • Control apparatus for internal combustion engine
  • Control apparatus for internal combustion engine

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Experimental program
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Embodiment Construction

[0024] Embodiments of the present disclosure will be described with reference to the drawings.

[0025] First, refer to figure 1 The structure of an engine control system for controlling an internal combustion engine equipped with a supercharger will be described.

[0026] The air filter 13 is located at the farthest upstream portion of the intake duct 12 (intake passage) of the internal combustion engine (hereinafter simply referred to as engine) 11 . An air flow meter 14 is located in the intake duct 12 on the downstream side of the air filter 13 in the intake air flow direction to sense the flow rate of intake air (fresh air). A catalytic converter (for example, a three-way catalytic converter) 16 is located in the exhaust pipe 15 (exhaust passage) of the engine 11 to pass harmful substances in the exhaust gas, such as carbon monoxide (CO), hydrocarbons (HC) and Nitrogen oxides (NOx)) are converted into less harmful substances to purify the exhaust gas.

[0027] An exhau...

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Abstract

A cylinder-inflow EGR gas quantity determining arrangement estimates or senses a value of a cylinder-inflow EGR gas quantity, which is a quantity of EGR gas that flows into a cylinder of an internal combustion engine. A misfire predicting arrangement predicts whether misfire occurs based on the value of the cylinder-inflow EGR gas quantity and an operational state of the internal combustion engine. A misfire-avoidance control arrangement executes at least one misfire-avoidance control operation to avoid the misfire when the misfire predicting arrangement predicts that the misfire occurs.

Description

technical field [0001] The present disclosure relates to a control device for an internal combustion engine equipped with an EGR device. Background technique [0002] For the purpose of improving fuel consumption and reducing knocking and exhaust emissions of the internal combustion engine, known vehicle internal combustion engines are equipped with an EGR device for recirculating a part of the exhaust gas as EGR gas to the intake passage. [0003] However, in an internal combustion engine equipped with an EGR device, even when the EGR valve is closed when the throttle valve is driven to its closed side (when the throttle valve opening is controlled to the closed side), EGR gas may remain In a part of the EGR passage located on the downstream side of the EGR valve or in the intake passage in the system. Especially in a system that recirculates EGR gas to a part of the intake passage located on the upstream side of the throttle valve, a large amount of EGR gas may remain in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D45/00
CPCG01M15/11F02D41/1497F02D2200/1015F02D41/0072F02D41/0052Y02T10/47Y02T10/40
Inventor 南敬太郎市原英明竹添浩行葛原浩司
Owner DENSO CORP