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Ignition control device for internal combustion engine

A technology of ignition control and internal combustion engine, applied in ignition controller, spark ignition controller, engine ignition and other directions, which can solve problems such as deterioration of determination accuracy of in-cylinder gas

Inactive Publication Date: 2015-09-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, according to the method described in the above-mentioned Patent Document 1, there is a concern that the determination accuracy of the flow velocity of the gas in the cylinder may deteriorate when the discharge disconnection occurs.

Method used

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  • Ignition control device for internal combustion engine
  • Ignition control device for internal combustion engine
  • Ignition control device for internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0034] [Description of system configuration]

[0035] (Structure of internal combustion engine)

[0036] figure 1 It is a schematic diagram for explaining the system configuration of the internal combustion engine 10 according to Embodiment 1 of the present invention. The system of the present embodiment includes a spark ignition type internal combustion engine (here, a gasoline engine as an example) 10 . The intake passage 12 and the exhaust passage 14 communicate with each cylinder of the internal combustion engine 10 .

[0037] An air cleaner 16 is installed near the inlet of the intake passage 12 . An air flow meter 18 that outputs a signal corresponding to the flow rate of air sucked into the intake passage 12 is provided near the downstream of the air cleaner 16 . A compressor 20 a of a turbocharger 20 is provided downstream of the air flow meter 18 .

[0038] The compressor 20a is integrally connected to a turbine 20b arranged in the exhaust passage 14 via a connec...

Embodiment approach 2

[0082] Next, refer to Figure 7 as well as Figure 8 Embodiment 2 of the present invention will be described.

[0083] System usage of this embodiment figure 1 as well as figure 2 Shown hardware structure and make ECU30 execute together Figure 6 The procedure shown and the following Figure 8 and Figure 9 The procedure shown, thus can be realized.

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Abstract

An ignition control device for an internal combustion engine in the present invention is provided with an ignition plug (34) for igniting an air mixture in a cylinder, and is configured to be capable of measuring the discharge voltage and the discharge current of the ignition plug (34). The ignition control device determines the flow rate of gas in the cylinder on the basis of an integral value of discharge energy obtained by integrating the product of the discharge voltage and the discharge current for a predetermined period of time.

Description

technical field [0001] The invention relates to an ignition control device for an internal combustion engine. Background technique [0002] Conventionally, for example, Patent Document 1 discloses a control device for a spark ignition type internal combustion engine. This conventional control device detects the secondary current (discharge current) flowing through the spark plug or the secondary voltage (discharge voltage) applied to the spark plug, and judges the in-cylinder Whether the gas flow velocity is above the judgment flow velocity. [0003] More specifically, in the above-mentioned conventional control device, when the secondary voltage after reaching the dielectric breakdown voltage, that is, the discharge sustaining voltage is equal to or higher than the judgment voltage, or when the secondary voltage after a predetermined time elapses from generation is the judgment voltage. When the voltage is higher than or equal to the voltage, it is determined that the gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P15/00F02P1/08
CPCF02D35/021F02D41/18F02P3/05F02P17/00G01F9/001F02P9/002F02P17/02F02P17/12
Inventor 木村幸四郎
Owner TOYOTA JIDOSHA KK