Internal combustion ignition device

一种点火设备、内燃机的技术，应用在机械设备、发动机点火、点火控制器等方向

Inactive Publication Date: 2008-03-26
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if the leakage current is detected by the current detection means as described above, it cannot be judged whether the leakage current is caused by deposits or by conductive deposits, or by both deposits and conductive deposits.
Therefore, it is difficult to take measures to alert the driver that the conductive deposits are attached to the spark plug, and there is a concern of driving failure due to the conductive deposits

Method used

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  • Internal combustion ignition device
  • Internal combustion ignition device
  • Internal combustion ignition device

Examples

Experimental program
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Embodiment --

[0078] In the above examples, the anti-deposit measures are taken by switching the shift schedule of the automatic transmission, however, the embodiment is not limited thereto. In a vehicle including a continuously variable transmission (CVT), anti-deposit measures such as switching the CVT gear ratio to increase the temperature of the spark plug 1 may be taken. Alternatively, instead of the above-mentioned method of switching the operating state, for example, other anti-deposit measures such as deposit removal by designing the shape of the spark plug, deposit removal by using auxiliary electrodes, and deposit removal by using multiple discharges can be taken Wait.

[0079] In the above example, measures are taken to remind the driver to perform maintenance on the spark plugs by turning on the warning light when it is determined that conductive deposits have adhered, however, other measures may also be taken. For example, when it is determined that conductive deposits have ad...

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PUM

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Abstract

When an ignition plug has an insulation resistance value below a predetermined value, the engine operation state is switched to increase the temperature of the ignition plug so as to promote smoke cleaning (step ST3). The smoke countermeasure state is counted (Step ST4). When the count value exceeds a predetermined value (step ST1), i.e., when the insulation resistance value of the ignition plug is below the predetermined value even when a smoke countermeasure is sufficiently carried out (step ST2), it is judged that a conductive deposit is attached to the ignition plug and, for example, an alarm lamp is turned ON (step ST8) to promote a driver to perform maintenance of the ignition plug.

Description

technical field [0001] The present invention relates to an ignition device of an internal combustion engine included in a vehicle or the like. Background technique [0002] For ignition devices of internal combustion engines (hereinafter also referred to as engines), a type of ignition device is known in which the spark plug is arranged in the cylinder head cover of the engine so that the igniter protrudes directly into the combustion chamber and emits the spark generated in the ignition coil High voltage is applied to the spark plugs. [0003] For example, as shown in FIG. 8 , a spark plug used in such an ignition device includes an insulator 12 held by a cylindrical mounting member 11, a center electrode 13 held in the insulator 12 and having a tip protruding from an end of the insulator 12. , and a ground electrode 14 opposite to the center electrode 13 with a prescribed spark gap Ga therebetween, and is configured to generate a spark discharge between the center electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P15/00F02P17/00H01T15/00
CPCF02P11/00H01T13/58F02P17/12F02P2017/125F02P3/0442F02P9/002F02D41/221F02P2017/123
Inventor 桥爪胜志
Owner TOYOTA JIDOSHA KK
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