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Control apparatus for internal combustion engine

A technology of internal combustion engine and control device, which is applied in the direction of engine control, internal combustion piston engine, combustion engine, etc. It can solve the problems of not considering the properties of fuel, the internal temperature of the cylinder, and the instability of the combustion state of the air-fuel mixture, so as to achieve the suppression of instability. Effect

Inactive Publication Date: 2015-12-02
TOYOTA JIDOSHA KK
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the conventional technology described above, the amount of air drawn into the internal combustion engine during retardation of the ignition timing is considered, but the fuel properties and the internal temperature of the cylinder are not considered, so the combustion state of the air-fuel mixture may become when the ignition timing is retarded unstable

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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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Embodiment Construction

[0034] Specific embodiments of the present invention will be described below based on the drawings. Unless a specific description is provided to the contrary, the technical scope of the present invention is not limited to the dimensions, materials, shapes, relative arrangements, and the like of the constituent parts described in the respective embodiments.

[0035] will now be based on Figures 1 to 9 A first embodiment of the present invention will be described. figure 1 is a schematic diagram showing the configuration of an internal combustion engine to which the present invention is applied. figure 1 The internal combustion engine 1 shown is a spark ignition type internal combustion engine (gasoline engine) having a plurality of cylinders. Notice, figure 1 Only one of the cylinders is shown.

[0036]Pistons 3 are housed in each cylinder 2 of the internal combustion engine 1 so as to slide freely. The piston 3 is coupled to an output shaft (crankshaft) not shown in the ...

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Abstract

In a control apparatus for an internal combustion engine, which implements temperature increasing processing in which an ignition timing is retarded to a predetermined target ignition timing in order to increase an exhaust gas temperature, a period required for an actual ignition timing to become equal to the target ignition timing following the start of retardation of the ignition timing during the temperature increasing processing is lengthened when a startup torque, which is a torque generated by the internal combustion engine during a startup process, is small.

Description

technical field [0001] The present invention relates to a control device for a spark ignition type internal combustion engine, and more particularly to a technique for warming up components arranged in an exhaust system of the internal combustion engine by retarding ignition timing. Background technique [0002] In the conventional technology employed in the spark ignition type internal combustion engine, the temperature of the exhaust gas is raised by retarding the ignition timing during the fast idling operation after the start is completed, and as a result, the components arranged in the exhaust system (for example, the exhaust purification catalyst etc.) the temperature rises as soon as possible. In another proposed technique (for example, see Japanese Patent Application Publication No. 2009-121255 (JP2009-121255A)), when the ignition timing is retarded from that suitable for starting the internal combustion engine to suitable for fast idling The ignition timing is reta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/02F02P5/15
CPCF02D37/02Y02T10/46F02P5/145
Inventor 桥本晋三谷信一
Owner TOYOTA JIDOSHA KK