JPH04117164U - Cylinder head device - Google Patents
Cylinder head deviceInfo
- Publication number
- JPH04117164U JPH04117164U JP4201691U JP4201691U JPH04117164U JP H04117164 U JPH04117164 U JP H04117164U JP 4201691 U JP4201691 U JP 4201691U JP 4201691 U JP4201691 U JP 4201691U JP H04117164 U JPH04117164 U JP H04117164U
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- combustion chamber
- cylinder head
- chamber
- exhaust port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000498 cooling water Substances 0.000 claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
(57)【要約】
【目的】 吸気ポート及び排気ポートがシリンダヘッド
の同一側面に開口するタイプのシリンダヘッドにおける
シリンダ中心部分の冷却を改善して、シリンダヘッドの
耐久性及び信頼性を向上する。
【構成】 シリンダヘッドの内部に、同シリンダヘッド
の同一側面に開口する吸気ポート及び排気ポートと、副
燃焼室と、上記吸気ポート及び排気ポート並びに副燃焼
室を囲む冷却水室とを設けたものにおいて、副燃焼室及
び排気ポートの側方に設けられたヘッドボルト挿通用ボ
スの中間部分における冷却水室内に底壁から上方に立上
ったリブを設けると共に、副燃焼室に隣接する冷却水室
の底壁にウオータディレクタを具えた冷却水穴を設け
る。上記ウオータディレクタから吐出された冷却水が上
記リブに誘導されて副燃焼室と排気ポートとの間を流れ
たのち弁間部分に流れ、シリンダヘッドの高温部分を効
果的に冷却する。
(57) [Summary] [Purpose] To improve the durability and reliability of the cylinder head by improving the cooling of the central part of the cylinder in a type of cylinder head in which the intake port and exhaust port open on the same side of the cylinder head. [Structure] Inside the cylinder head, there are provided an intake port and an exhaust port that open on the same side of the cylinder head, an auxiliary combustion chamber, and a cooling water chamber that surrounds the intake port, exhaust port, and auxiliary combustion chamber. A rib is provided in the cooling water chamber at the intermediate portion of the head bolt insertion boss provided on the side of the auxiliary combustion chamber and the exhaust port, and a rib is provided that rises upward from the bottom wall, and the cooling water adjacent to the auxiliary combustion chamber is A cooling water hole with a water director is provided in the bottom wall of the chamber. Cooling water discharged from the water director is guided by the ribs, flows between the auxiliary combustion chamber and the exhaust port, and then flows to the valve space, effectively cooling the high temperature part of the cylinder head.
Description
【０００１】0001
本考案は、ディーゼルエンジンのシリンダヘッド装置に関するものである。 The present invention relates to a cylinder head device for a diesel engine.
【０００２】0002
ディーゼルエンジンのシリンダヘッド内部に、同シリンダヘッドの同一側面に 開口する吸気ポート及び排気ポートを設けると共に副燃焼室を設け、更に吸気ポ ート、排気ポート及び副燃焼室を囲む冷却水室を設けた所謂カウンタフロー型エ ンジンのシリンダヘッドにおいては、各シリンダ毎に、吸気ポート及び排気ポー トが比較的挾い間隔を存して並設されるために、冷却水の流れが不均一になり易 く、特に吸気弁及び排気弁の弁間部分並びにこれら両弁と副燃焼室との間のシリ ンダ中心部分の冷却が十分に行なわれず、弁間亀裂等が発生し易いという問題が あった。 Inside the cylinder head of a diesel engine, on the same side of the cylinder head. In addition to providing an open intake port and exhaust port, an auxiliary combustion chamber is provided, and an intake port is also provided. The so-called counterflow type engine has a cooling water chamber surrounding the exhaust port, exhaust port, and sub-combustion chamber. In the engine cylinder head, each cylinder has an intake port and an exhaust port. Cooling water flow tends to be uneven because the cooling water is installed side by side with relatively small intervals between them. In particular, the parts between the intake valves and exhaust valves, and the series between these two valves and the auxiliary combustion chamber. There is a problem that the center part of the cylinder is not cooled enough and cracks between the valves are likely to occur. there were.
【０００３】0003
本考案は、上記カウンタフロー型エンジンのシリンダヘッドにおけるシリンダ 中心部分の冷却水流を改善して弁間亀裂等の発生を防止し、シリンダヘッドの耐 久性及び信頼性を向上することを目的とするものである。 The present invention is aimed at the cylinder head of the counterflow type engine. Improves the flow of cooling water in the center to prevent cracks between valves and improve the durability of the cylinder head. The purpose is to improve durability and reliability.
【０００４】0004
本考案は、上記目的を達成するために創案されたもので、シリンダヘッドの内 部に、同シリンダヘッドの同一側面に開口する吸気ポート及び排気ポートと副燃 焼室と上記吸気ポート及び排気ポート並びに副燃焼室を囲む冷却水室とを具えて なるものにおいて、上記副燃焼室及び排気ポートの側方に設けられたヘッドボル ト挿通用ボスの中間部分における冷却水室内に同水室の底壁から上方に立上った リブを設けると共に、上記副燃焼室に隣接する冷却水室の底壁に、冷却水を上記 リブと副燃焼室外周壁との中間に指向して流通させるウオータディレクタを具え た冷却水穴を配設してなることを特徴とするシリンダヘッド装置を提供するもの である。 This invention was devised to achieve the above purpose, and is The intake port, exhaust port and secondary combustion port open on the same side of the cylinder head. A cooling water chamber surrounding the combustion chamber, the intake port, the exhaust port, and the auxiliary combustion chamber. The head bolt provided on the side of the auxiliary combustion chamber and the exhaust port In the cooling water chamber at the middle part of the boss for insertion, there is a hole that rises upward from the bottom wall of the water chamber. In addition to providing ribs, cooling water is provided on the bottom wall of the cooling water chamber adjacent to the sub-combustion chamber. Equipped with a water director that directs the water to flow between the rib and the outer peripheral wall of the auxiliary combustion chamber. Provided is a cylinder head device characterized by having cooling water holes arranged therein. It is.
【０００５】[0005]
本考案によれば、副燃焼室及び排気ポートの側方に設けられたヘッドボルト挿 入用ボスの中間部分における冷却水室内に水室底壁から上方に立上ったリブを設 けると共に、副燃焼室に隣接する冷却水室の底壁にウオータディレクタを具えた 冷却水穴を設けて、上記リブと副燃焼室外周壁との中間部分に冷却水を流通させ るので、シリンダ中心部分に対応するシリンダヘッド部分の冷却水の流れが改善 される。 According to the present invention, the head bolt insertion provided on the side of the auxiliary combustion chamber and the exhaust port A rib that rises upward from the bottom wall of the water chamber is installed in the cooling water chamber in the middle part of the service boss. In addition, a water director is installed on the bottom wall of the cooling water chamber adjacent to the sub-combustion chamber. A cooling water hole is provided to allow cooling water to flow through the intermediate portion between the rib and the outer peripheral wall of the sub-combustion chamber. This improves the flow of cooling water in the cylinder head, which corresponds to the center of the cylinder. be done.
【０００６】[0006]
以下本考案の実施例を添付図面について具体的に説明する。図中符号１０は総 括的に副燃焼室式ディーゼルエンジンのシリンダヘッドを示し、同シリンダヘッ ド１０の内部には、各シリンダ毎の吸気ポート１２及び排気ポート１４が設けら れ、同吸気ポート及び排気ポートは夫々シリンダヘッド１０の一側面１６に開口 している。また、上記吸気ポート１２及び排気ポート１４の弁座開口１８及び２ ０に隣接して副燃焼室２２が設けられ、同吸気ポート及び排気ポート並びに副燃 焼室の外周壁を囲み冷却水室２４が形成されている。 Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The code 10 in the figure is the total The cylinder head of a sub-combustion chamber type diesel engine is shown comprehensively. Inside the door 10, an intake port 12 and an exhaust port 14 are provided for each cylinder. The intake port and exhaust port are respectively opened on one side 16 of the cylinder head 10. are doing. Further, the valve seat openings 18 and 2 of the intake port 12 and the exhaust port 14 are A sub-combustion chamber 22 is provided adjacent to A cooling water chamber 24 is formed surrounding the outer peripheral wall of the baking chamber.
【０００７】 シリンダヘッド１０の上記一側面１６及び他側面２６に沿い多数のヘッドボル ト穴２８が穿設され、また各シリンダ間において上記副燃焼室２２及び排気ポー ト１４に隣接してヘッドボルト挿通用ボス３０が設けられ、これらボス３０には ヘッドボルト穴３２が夫々穿設されている。上記ヘッドボルト穴２８及び３２に 夫々挿通されるヘッドボルトによってシリンダヘッド１０が図示しないクランク ケースに緊締され固着される。上記冷却水室２４のクランクケースに接する底壁 には、同クランクケースの冷却水室に連通する多数の冷却水穴３４が穿設され、 これら冷却水穴３４のうち副燃焼室２２と上記他側面２６側のボス３０との間に 配設された冷却水穴３４には、図３に良く示されているような冷却水の流出方向 を限定する開口３６を具えた薄板製のウオータディレクタ３８が設けられている 。更に、上記シリンダ間の一対のボス３０間に冷却水室の底壁から上方に立上っ たリブ４０が設けられ、同リブ４０のウオータディレクタ３８側の傾斜壁４２に よって同ディレクタから吐出された冷却水が排気ポート１４と副燃焼室２２との 間の冷却水通路部分Ａから弁間部分Ｂに導かれるようになっている。[0007] A large number of head bolts are provided along one side 16 and the other side 26 of the cylinder head 10. A hole 28 is drilled between each cylinder, and the auxiliary combustion chamber 22 and exhaust port are provided between each cylinder. Head bolt insertion bosses 30 are provided adjacent to the bolts 14, and these bosses 30 include Head bolt holes 32 are respectively drilled. into the head bolt holes 28 and 32 above. The cylinder head 10 is attached to a crank (not shown) by the head bolts inserted therein. It is tightened and fixed to the case. The bottom wall of the cooling water chamber 24 in contact with the crankcase A number of cooling water holes 34 communicating with the cooling water chamber of the crankcase are bored in the crankcase. Among these cooling water holes 34, between the sub-combustion chamber 22 and the boss 30 on the other side surface 26 side, The provided cooling water holes 34 have an outflow direction of cooling water as shown in FIG. A thin plate water director 38 is provided with an opening 36 defining the . Further, between the pair of bosses 30 between the cylinders, there is a boss rising upward from the bottom wall of the cooling water chamber. A rib 40 is provided on the inclined wall 42 of the rib 40 on the water director 38 side. Therefore, the cooling water discharged from the director flows between the exhaust port 14 and the sub-combustion chamber 22. The cooling water passage section A between the valves is led to the section B between the valves.
【０００８】 上記構成によれば、エンジンの運転中、クランクケースの冷却水室から多数の 冷却水穴３４を通ってシリンダヘッド１０の冷却水室２４内に冷却水が流入する 。この際、特に副燃焼室２２とボス３０との間に配設された冷却水穴３４にウオ ータディレクタ３８が設けられ、同ディレクタの開口３６から吐出された冷却水 がリブ４０の傾斜壁４２に誘導されて、高温の排気ガスに接する排気ポート１４ 及び高温の燃焼ガスに接する副燃焼室２２の外周面に沿い冷却水通路部分Ａに流 れ、続いて吸気弁及び排気弁の弁間部分Ｂに流れて、従来とかく冷却不足になり がちなシリンダ中心部に対応するシリンダヘッドの高温部分を効果的に冷却する ことができるので、弁間亀裂等の発生を有効に防止し得る効果がある。[0008] According to the above configuration, while the engine is operating, a large number of Cooling water flows into the cooling water chamber 24 of the cylinder head 10 through the cooling water hole 34. . At this time, water is added to the cooling water hole 34 located between the sub-combustion chamber 22 and the boss 30. A cooling water discharged from an opening 36 of the director is provided. is guided by the inclined wall 42 of the rib 40, and the exhaust port 14 is in contact with the high temperature exhaust gas. The cooling water flows into the cooling water passage portion A along the outer peripheral surface of the sub-combustion chamber 22 that is in contact with the high-temperature combustion gas. Then, it flows into the intervalve part B of the intake valve and exhaust valve, resulting in insufficient cooling as in the past. Effectively cools the high temperature part of the cylinder head that corresponds to the center of the cylinder. This has the effect of effectively preventing the occurrence of intervalve cracks and the like.
【０００９】 なお、図２において、符号４４及び４６は吸気弁及び排気弁の弁ステムを摺動 自在にガイドする筒状のバルブガイドを収容するバルブガイド取付孔、４８及び ５０は吸気弁及び排気弁を作動させる吸気タペット及び排気タペットを摺動自在 に収容するタペット孔、５２は吸気カム及び排気カムを具えた動弁用カム軸を軸 支するカム軸ブラケット、５４は副燃焼室２２のクランクケース側の開口に装着 された口金である。[0009] In addition, in FIG. 2, numerals 44 and 46 indicate sliding valve stems of the intake valve and exhaust valve. a valve guide mounting hole 48 for accommodating a freely guiding cylindrical valve guide; 50 is a slidable intake tappet and exhaust tappet that operate the intake valve and exhaust valve. The tappet hole 52 accommodates a valve train cam shaft equipped with an intake cam and an exhaust cam. The supporting camshaft bracket 54 is attached to the opening on the crankcase side of the auxiliary combustion chamber 22. This is the amount that was paid.
【００１０】0010
叙上のように、本考案に係るシリンダヘッド装置は、シリンダヘッドの内部に 、同シリンダヘッドの同一側面に開口する吸気ポート及び排気ポートと副燃焼室 と上記吸気ポート及び排気ポート並びに副燃焼室を囲む冷却水室とを具えてなる ものにおいて、上記副燃焼室及び排気ポートの側方に設けられたヘッドボルト挿 通用ボスの中間部分における冷却水室内に同水室の底壁から上方に立上ったリブ を設けると共に、上記副燃焼室に隣接する冷却水室の底壁に、冷却水を上記リブ と副燃焼室外周壁との中間に指向して流通させるウオータディレクタを具えた冷 却水穴を配設してなることを特徴とし、吸気ポート及び排気ポートがシリンダヘ ッドの同一側面に開口するように配置されたカウンタフロー型エンジンのシリン ダヘッドにおける冷却性能を改善して、その耐久性及び信頼性を向上することが できるので、実用上有益である。 As mentioned above, the cylinder head device according to the present invention has a , the intake port, exhaust port, and sub-combustion chamber that open on the same side of the same cylinder head. and a cooling water chamber surrounding the intake port, exhaust port, and sub-combustion chamber. In this case, the head bolt insert installed on the side of the sub-combustion chamber and exhaust port. A rib that rises upward from the bottom wall of the cooling water chamber in the middle part of the general boss At the same time, the cooling water is placed on the bottom wall of the cooling water chamber adjacent to the sub-combustion chamber through the ribs. The cooling system is equipped with a water director that directs the water to flow between the It is characterized by a water cooling hole, and the intake port and exhaust port are connected to the cylinder. The cylinders of a counterflow engine are arranged so that they open on the same side of the head. It is possible to improve the cooling performance of the head and increase its durability and reliability. This is useful for practical purposes.
【図１】本考案の一実施例を示す横断面図である。FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
【図２】図１のＩＩ−ＩＩ線に沿う縦断面図である。FIG. 2 is a longitudinal sectional view taken along line II-II in FIG. 1;
【図３】図１のＩＩＩ−ＩＩＩ線に沿う拡大断面図であ
る。FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1;
１０ シリンダヘッド １２ 吸気ポート １４ 排気ポート ２２ 副燃焼室 ２４ 冷却水室 ２８及び３２ ヘッドボルト穴 ３０ ヘッドボルト挿通用ボス ３４ 冷却水穴 ３８ ウオータディレクタ ４０ リブ 10 cylinder head 12 Intake port 14 Exhaust port 22 Secondary combustion chamber 24 Cooling water room 28 and 32 head bolt holes 30 Boss for head bolt insertion 34 Cooling water hole 38 Water director 40 ribs
Claims (1)
ッドの同一側面に開口する吸気ポート及び排気ポートと
副燃焼室と上記吸気ポート及び排気ポート並びに副燃焼
室を囲む冷却水室とを具えてなるものにおいて、上記副
燃焼室及び排気ポートの側方に設けられたへッドボルト
挿通用ボスの中間部分における冷却水室内に同水室の底
壁から上方に立上ったリブを設けると共に、上記副燃焼
室に隣接する冷却水室の底壁に、冷却水を上記リブと副
燃焼室外周壁との中間に指向して流通させるウオータデ
ィレクタを具えた冷却水穴を配設してなることを特徴と
するシリンダヘッド装置。Claim 1: A cylinder head is provided with an intake port, an exhaust port, an auxiliary combustion chamber, and a cooling water chamber surrounding the intake port, exhaust port, and auxiliary combustion chamber, which are opened on the same side of the cylinder head. In the cooling water chamber, a rib rising upward from the bottom wall of the water chamber is provided in the intermediate portion of the head bolt insertion boss provided on the side of the sub-combustion chamber and the exhaust port, and a rib is provided upwardly from the bottom wall of the water chamber. A cooling water hole is provided in the bottom wall of the cooling water chamber adjacent to the combustion chamber, and the cooling water hole is equipped with a water director that directs and circulates cooling water toward the middle between the rib and the outer circumferential wall of the sub-combustion chamber. cylinder head device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991042016U JP2557372Y2 (en) | 1991-03-29 | 1991-03-29 | Cylinder head device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991042016U JP2557372Y2 (en) | 1991-03-29 | 1991-03-29 | Cylinder head device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04117164U true JPH04117164U (en) | 1992-10-20 |
| JP2557372Y2 JP2557372Y2 (en) | 1997-12-10 |
Family
ID=31922614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991042016U Expired - Fee Related JP2557372Y2 (en) | 1991-03-29 | 1991-03-29 | Cylinder head device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2557372Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156231A (en) * | 1979-05-23 | 1980-12-05 | Fiat Veicoli Ind | Cylinder head for compressionnignited internal combustion engine |
| JPS60120687A (en) * | 1983-12-05 | 1985-06-28 | Hitachi Micro Comput Eng Ltd | Television receiver |
| JPS60170332A (en) * | 1984-02-15 | 1985-09-03 | Nissan Motor Co Ltd | Acoustic device for vehicle |
-
1991
- 1991-03-29 JP JP1991042016U patent/JP2557372Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55156231A (en) * | 1979-05-23 | 1980-12-05 | Fiat Veicoli Ind | Cylinder head for compressionnignited internal combustion engine |
| JPS60120687A (en) * | 1983-12-05 | 1985-06-28 | Hitachi Micro Comput Eng Ltd | Television receiver |
| JPS60170332A (en) * | 1984-02-15 | 1985-09-03 | Nissan Motor Co Ltd | Acoustic device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2557372Y2 (en) | 1997-12-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
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