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Control device for internal combustion engine

A technology for control devices and internal combustion engines, applied in the direction of engine control, internal combustion piston engines, electrical control, etc., can solve the problems of increasing the discharge current of spark plugs, increasing the ignition device, the calorific value and volume increase of the ignition device, etc., and achieve the purpose of suppressing ignition Bad, the effect of suppressing power consumption

Active Publication Date: 2021-12-21
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the charge and discharge capacity of the ignition device is increased in order to increase the discharge current of the spark plug, the heat generation and volume of the ignition device increase.

Method used

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  • Control device for internal combustion engine
  • Control device for internal combustion engine
  • Control device for internal combustion engine

Examples

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Embodiment Construction

[0026] A control device for an internal combustion engine according to an embodiment of the present invention will be described below.

[0027] A control device 1 as one form of a control device for an internal combustion engine according to an embodiment of the present invention will be described below. In this embodiment, a case where the discharge (ignition) of the spark plugs 200 respectively provided in the respective cylinders 150 of the four-cylinder internal combustion engine 100 is controlled by the control device 1 will be described as an example.

[0028] Hereinafter, in the embodiment, a configuration combining a part or all of the configuration of the internal combustion engine 100 and a part or all of the configuration of the control device 1 is referred to as the control device 1 of the internal combustion engine 100 .

[0029] [internal combustion engine]

[0030] figure 1 It is a figure explaining the main part structure of the internal combustion engine 100...

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Abstract

The purpose of the present invention is to reduce power consumption, a calorific value, and capacity of an ignition device in an internal combustion engine, while reducing an ignition failure of fuel by an ignition plug. For this purpose, a control device 1 for an internal combustion engine is provided with an ignition control unit that controls energization of an ignition coil 300 that supplies electric energy to an ignition plug 200 that discharges electricity inside a cylinder 150 of an internal combustion engine 100 to ignite fuel. The ignition control unit controls the energization of the ignition coil 300 so that first electric energy is released from the ignition coil 300, and so that second electric energy that changes on the basis of a gas state around the ignition plug 200 is released so as to overlap the first energy.

Description

technical field [0001] The present invention relates to a control device for an internal combustion engine. Background technique [0002] In recent years, in order to improve the fuel consumption of vehicles, the development of internal combustion engines employs technologies such as the technology of burning an air-fuel mixture leaner than the stoichiometric air-fuel ratio to operate the internal combustion engine, and the technology of introducing a part of the exhaust gas after combustion and rebreathing it again. control device. [0003] In such a control device for an internal combustion engine, the amounts of fuel and air in the combustion chamber deviate from theoretical values, and therefore, poor ignition of the fuel by the spark plug tends to occur. Then, there is a method of suppressing misfire by increasing the discharge current of the spark plug to extend the discharge path generated between the electrodes of the spark plug. However, since the charging and dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P3/00F02P15/10
CPCF02D41/34F02D41/005F02D37/02F02P5/1516F02P3/04F02P15/08F02D41/0047F02P3/0414
Inventor 大畠英一郎
Owner HITACHI ASTEMO LTD
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