JP2019105209A5 - - Google Patents

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JP2019105209A5
JP2019105209A5 JP2017237960A JP2017237960A JP2019105209A5 JP 2019105209 A5 JP2019105209 A5 JP 2019105209A5 JP 2017237960 A JP2017237960 A JP 2017237960A JP 2017237960 A JP2017237960 A JP 2017237960A JP 2019105209 A5 JP2019105209 A5 JP 2019105209A5
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Japan
Prior art keywords
peripheral surface
ignition
combustion engine
internal combustion
axial direction
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JP2017237960A
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Japanese (ja)
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JP6909717B2 (en
JP2019105209A (en
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Priority to JP2017237960A priority Critical patent/JP6909717B2/en
Priority claimed from JP2017237960A external-priority patent/JP6909717B2/en
Priority to PCT/JP2018/031609 priority patent/WO2019116639A1/en
Publication of JP2019105209A publication Critical patent/JP2019105209A/en
Publication of JP2019105209A5 publication Critical patent/JP2019105209A5/ja
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Claims (9)

点火プラグと、前記点火プラグが螺合可能に構成されたシリンダヘッド部材と、を備える内燃機関用の点火装置であって、
前記点火プラグは、
前記点火プラグの軸線方向における一端側に設けられる点火部と、
前記点火部よりも前記軸線方向の他端側に設けられる被支持部であって、前記被支持部の外周面の前記軸線方向における少なくとも一部に雄ネジ部が形成された被支持部と、を含み、
前記シリンダヘッド部材は、
前記被支持部が挿入されて前記被支持部の前記外周面に対面する内周面を有するプラグホールであって、前記内周面の前記軸線方向における少なくとも一部に前記雄ネジ部に螺合する雌ネジ部が形成されたプラグホールと、
冷却水が通る冷却水流路と、を有し、
前記被支持部の前記外周面と前記プラグホールの前記内周面とが対面する対面領域を、 前記軸線方向において、前記冷却水流路までの距離が所定距離以下となる領域を含む流路近傍領域と、前記冷却水流路までの距離が前記所定距離を超える領域を含む流路遠方領域と、に区分した際に、
前記雄ネジ部および前記雌ネジ部は、前記流路近傍領域および前記流路遠方領域のうちの前記流路近傍領域のみに形成されている
内燃機関用の点火装置。 An ignition device for an internal combustion engine, comprising an ignition plug, and a cylinder head member configured such that the ignition plug can be screwed,
The spark plug is
An ignition part provided on one end side in the axial direction of the spark plug,
A supported portion provided on the other end side in the axial direction with respect to the ignition portion, the supported portion having a male screw portion formed on at least a part of the outer peripheral surface of the supported portion in the axial direction, Including,
The cylinder head member is
A plug hole having an inner peripheral surface into which the supported portion is inserted and faces the outer peripheral surface of the supported portion, wherein the male screw portion is screwed onto at least a part of the inner peripheral surface in the axial direction. A plug hole in which a female screw part is formed,
A cooling water passage through which cooling water passes,
A flow passage vicinity region including a region where the outer peripheral surface of the supported portion and the inner peripheral surface of the plug hole face each other, in the axial direction, a region in which the distance to the cooling water flow passage is a predetermined distance or less. If, when the distance to the cooling water flow path is divided into a flow path distal region including a region exceeding the prescribed distance,
The ignition device for an internal combustion engine, wherein the male screw portion and the female screw portion are formed only in the flow passage vicinity region of the flow passage vicinity region and the flow passage distance region. 前記冷却水流路は、前記冷却水流路の少なくとも一部が前記流路近傍領域における前記軸線方向と直交する方向に延在するラインと交差するように、形成されている
請求項１に記載の内燃機関用の点火装置。 The internal combustion engine according to claim 1, wherein the cooling water passage is formed so that at least a part of the cooling water passage intersects with a line extending in a direction orthogonal to the axial direction in the region near the passage. Ignition device for engines. 前記流路近傍領域は、前記軸線方向において、前記流路遠方領域よりも前記点火部の近くに形成されている
請求項２に記載の内燃機関用の点火装置。 The ignition device for an internal combustion engine according to claim 2, wherein the flow passage vicinity region is formed closer to the ignition portion than the flow passage remote region in the axial direction. 前記内燃機関用の点火装置は、前記被支持部の前記外周面と、前記プラグホールの前記内周面との間をシールするためのシール部材であって、前記雄ネジ部および前記雌ネジ部よりも前記軸線方向において前記点火部の近くに配置されるシール部材をさらに備える
請求項３に記載の内燃機関用の点火装置。 The ignition device for an internal combustion engine is a seal member for sealing between the outer peripheral surface of the supported portion and the inner peripheral surface of the plug hole, the male screw portion and the female screw portion. The ignition device for an internal combustion engine according to claim 3, further comprising a seal member arranged closer to the ignition portion in the axial direction than the seal member. 前記冷却水流路は、前記流路近傍領域における前記点火部から最も離れた位置から前記軸線方向と直交する方向に延在するラインに対して前記点火部が位置する側とは反対側に位置するように形成されている
請求項１に記載の内燃機関用の点火装置。 The cooling water flow passage is located on a side opposite to a side where the ignition unit is located with respect to a line extending in a direction orthogonal to the axial direction from a position farthest from the ignition unit in a region near the flow passage. The ignition device for an internal combustion engine according to claim 1, wherein the ignition device is formed as described above. 前記内燃機関用の点火装置は、前記被支持部の前記外周面と、前記プラグホールの前記内周面との間をシールするためのシール部材であって、前記流路近傍領域又は前記流路近傍領域に隣接した位置に配置されるシール部材をさらに備える
請求項１乃至５の何れか１項に記載の内燃機関用の点火装置。 The ignition device for an internal combustion engine is a seal member for sealing between the outer peripheral surface of the supported portion and the inner peripheral surface of the plug hole, the flow passage vicinity region or the flow passage. The ignition device for an internal combustion engine according to any one of claims 1 to 5, further comprising a seal member arranged at a position adjacent to the vicinity region. 点火プラグと、前記点火プラグが螺合可能に構成されたシリンダヘッド部材と、を備える内燃機関用の点火装置であって、
前記点火プラグは、
前記点火プラグの軸線方向における一端側に設けられる点火部と、
前記点火部よりも前記軸線方向の他端側に設けられる被支持部であって、前記被支持部の外周面の前記軸線方向における少なくとも一部に雄ネジ部が形成された被支持部と、を含み、
前記シリンダヘッド部材は、
前記被支持部が挿入されて前記被支持部の前記外周面に対面する内周面を有するプラグホールであって、前記内周面の前記軸線方向における少なくとも一部に前記雄ネジ部に螺合する雌ネジ部が形成されたプラグホールと、
冷却水が通る冷却水流路と、を有し、
前記内燃機関用の点火装置は、前記被支持部の前記外周面と、前記プラグホールの前記内周面との間をシールするためのシール部材をさらに備え、
前記被支持部の前記外周面と前記プラグホールの前記内周面とが対面する対面領域を、 前記軸線方向において、前記冷却水流路までの距離が所定距離以下となる領域を含む流路近傍領域と、前記冷却水流路までの距離が前記所定距離を超える領域を含む流路遠方領域と、に区分した際に、
前記シール部材は前記流路近傍領域又は前記流路近傍領域に隣接した位置に配置される
内燃機関用の点火装置。 An ignition device for an internal combustion engine, comprising an ignition plug, and a cylinder head member configured such that the ignition plug can be screwed,
The spark plug is
An ignition part provided on one end side in the axial direction of the spark plug,
A supported portion provided on the other end side in the axial direction with respect to the ignition portion, the supported portion having a male screw portion formed on at least a part of the outer peripheral surface of the supported portion in the axial direction, Including,
The cylinder head member is
A plug hole having an inner peripheral surface into which the supported portion is inserted and faces the outer peripheral surface of the supported portion, wherein the male screw portion is screwed onto at least a part of the inner peripheral surface in the axial direction. A plug hole in which a female screw part is formed,
A cooling water passage through which cooling water passes,
The ignition device for an internal combustion engine further comprises a seal member for sealing between the outer peripheral surface of the supported portion and the inner peripheral surface of the plug hole,
A flow passage vicinity region including a region where the outer peripheral surface of the supported portion and the inner peripheral surface of the plug hole face each other, in the axial direction, a region in which the distance to the cooling water flow passage is a predetermined distance or less. If, when the distance to the cooling water flow path is divided into a flow path distal region including a region exceeding the prescribed distance,
An ignition device for an internal combustion engine, wherein the seal member is arranged in the flow passage vicinity region or in a position adjacent to the flow passage vicinity region. 前記点火プラグの前記被支持部は、前記外周面から凹んだ凹部を有し、
前記プラグホールは、前記内周面から突出する凸部を有し、
前記シール部材は、前記凹部および前記凸部に当接するように配置される
請求項７に記載の内燃機関用の点火装置。 The supported portion of the spark plug has a recessed portion that is recessed from the outer peripheral surface,
The plug hole has a convex portion protruding from the inner peripheral surface,
The ignition device for an internal combustion engine according to claim 7, wherein the seal member is arranged so as to come into contact with the concave portion and the convex portion. 前記シリンダヘッド部材は、シリンダヘッドと、前記シリンダヘッドとは別体に構成されるとともに前記シリンダヘッドに内装される点火プラグ支持部材であって、前記プラグホール有するとともに主燃焼室に噴孔を介して連通される副燃焼室の一部を形成する点火プラグ支持部材と、を含む
請求項１乃至８の何れか１項に記載の内燃機関用の点火装置。 The cylinder head member is an ignition plug supporting member that is configured separately from the cylinder head and is installed inside the cylinder head, and has the plug hole and the injection hole through the main combustion chamber. An ignition device for an internal combustion engine according to any one of claims 1 to 8, further comprising: an ignition plug support member that forms a part of a sub-combustion chamber that is communicated with each other.
JP2017237960A 2017-12-12 2017-12-12 Ignition system for internal combustion engine Active JP6909717B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017237960A JP6909717B2 (en) 2017-12-12 2017-12-12 Ignition system for internal combustion engine
PCT/JP2018/031609 WO2019116639A1 (en) 2017-12-12 2018-08-27 Ignition device for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017237960A JP6909717B2 (en) 2017-12-12 2017-12-12 Ignition system for internal combustion engine

Publications (3)

Publication Number Publication Date
JP2019105209A JP2019105209A (en) 2019-06-27
JP2019105209A5 true JP2019105209A5 (en) 2020-06-18
JP6909717B2 JP6909717B2 (en) 2021-07-28

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WO (1) WO2019116639A1 (en)

Family Cites Families (12)

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JPS59151792A (en) * 1983-02-17 1984-08-30 日本特殊陶業株式会社 Long reach flat sheet type spark plug
US4491101A (en) * 1983-09-06 1985-01-01 Strumbos William P Multiple heat-range spark plug
JPH0639098Y2 (en) * 1987-07-02 1994-10-12 日野自動車工業株式会社 Spark plug mounting adapter
JPH11273827A (en) * 1998-03-18 1999-10-08 Ngk Spark Plug Co Ltd Spark plug
JP2005273492A (en) * 2004-03-23 2005-10-06 Mitsubishi Heavy Ind Ltd Indirect injection type internal combustion engine
JP2006012464A (en) * 2004-06-22 2006-01-12 Ngk Spark Plug Co Ltd Spark plug and internal combustion engine having the same
JP4351272B2 (en) * 2006-09-07 2009-10-28 日本特殊陶業株式会社 Spark plug
JP4394152B2 (en) * 2007-09-13 2010-01-06 日本特殊陶業株式会社 Spark plug and internal combustion engine to which the spark plug is attached
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