JPS62258121A - Side housing for rotary piston engine - Google Patents
Side housing for rotary piston engineInfo
- Publication number
- JPS62258121A JPS62258121A JP10129186A JP10129186A JPS62258121A JP S62258121 A JPS62258121 A JP S62258121A JP 10129186 A JP10129186 A JP 10129186A JP 10129186 A JP10129186 A JP 10129186A JP S62258121 A JPS62258121 A JP S62258121A
- Authority
- JP
- Japan
- Prior art keywords
- sprayed layer
- seal
- side housing
- housing
- sliding surface
- 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
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000010407 anodic oxide Substances 0.000 claims abstract description 14
- 229910001234 light alloy Inorganic materials 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000838 Al alloy Inorganic materials 0.000 abstract 2
- 230000000593 degrading effect Effects 0.000 abstract 2
- 238000002048 anodisation reaction Methods 0.000 abstract 1
- 239000010953 base metal Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、シール摺動面に硬質材料の溶射層を設けて耐
摩耗性を高め、かつ該溶射層の下に陽極酸化膜を形成し
て断熱性を高めたロータリピストンエンジンのサイドハ
ウジングに関する。Detailed Description of the Invention (Field of Industrial Application) The present invention provides a sprayed layer of a hard material on the sliding surface of a seal to improve wear resistance, and forms an anodized film under the sprayed layer. This invention relates to a side housing for a rotary piston engine that has improved heat insulation properties.
（従来の技術）
従来から、エンジンの軽景化を達成するために、ハウジ
ングをＡＱ合金等の軽合金により構成する方法が知られ
ている。しかし、軽合金は比較的軟質であるので、サイ
ドハウジングを構成する場合には、ロータのシール部材
との摺動面の耐摩耗性を確保するための対策が必要とな
る。この目的のために、例えば実公昭４６−２００８３
号公報に開示されているサイドハウジングでは、前記摺
動面に、耐摩耗性に優れた硬質金属の溶射層を形成する
ようにしている。(Prior Art) Conventionally, a method has been known in which a housing is made of a light alloy such as an AQ alloy in order to make the engine lightweight. However, since the light alloy is relatively soft, when constructing the side housing, it is necessary to take measures to ensure the wear resistance of the sliding surface with the seal member of the rotor. For this purpose, for example,
In the side housing disclosed in the publication, a sprayed layer of hard metal having excellent wear resistance is formed on the sliding surface.
一方、軽合金は断熱性の点で劣るので、軽合金によりサ
イドハウジングを構成する場合は、燃焼室の熱が冷却通
路に逃げるのを防ぐための対策も必要となる。この目的
のために、前記公報に開示されている溶射層を厚く形成
して断熱性を高めることが考えられる。しかしながら、
シール摺動面は高温にさらされるため、溶射層を厚くす
ればするほど、該溶射層と母材（軽合金）との熱膨張差
が原因となる溶射層の剥離や変形が生じやすくなるとい
う問題点があった。On the other hand, light alloys are inferior in terms of heat insulation, so if the side housing is made of light alloys, measures are required to prevent heat from the combustion chamber from escaping into the cooling passage. For this purpose, it is conceivable to increase the thermal insulation properties by forming a thick sprayed layer as disclosed in the above-mentioned publication. however,
Since the seal sliding surface is exposed to high temperatures, the thicker the sprayed layer is, the more likely it is that the sprayed layer will peel or deform due to the difference in thermal expansion between the sprayed layer and the base material (light alloy). There was a problem.
（発明の目的）
本発明は、前記従来の問題点に＝みなされたもので、ロ
ータリピストンエンジンの軽合金製サイドハウジングに
おいて、シール摺動面に耐摩耗性を付与する硬質材料の
溶射層の密着性を低下させることなく、高い断熱性を確
保することを目的とする。(Object of the Invention) The present invention has been made in view of the above-mentioned problems in the prior art, and is directed to a light alloy side housing of a rotary piston engine. The purpose is to ensure high heat insulation without reducing adhesion.
（発明の構成）
前記目的を達成するために１本発明によるロータリピス
トンのサイドハウジングは、軽合金製サイドハウジング
において、ロータのシール部材が摺動するシール摺動面
に硬質材料の７８肘層を設けるとともに、該溶射層の下
に陽極酸化膜を形成したことを特徴としている。(Structure of the Invention) In order to achieve the above object, a side housing of a rotary piston according to the present invention is provided with a side housing made of a light alloy, and a 78-element layer of hard material is provided on the seal sliding surface on which the seal member of the rotor slides. It is characterized in that an anodic oxide film is formed under the sprayed layer.
陽極酸化膜は断熱作用があるため、溶射層を厚く形成し
なくても、冷却水等による過冷却が抑制される。Since the anodic oxide film has a heat insulating effect, supercooling caused by cooling water or the like can be suppressed without forming a thick sprayed layer.
（実施例）
第１図および第２図を参照すれば、本発明が適用される
サイドハウジングｌには、中心部に、ロータ偏心軸が挿
入される挿入穴２が形成されている。この挿入穴２の周
囲には、ロータハウジング３と協働して、ロータ４を収
容するロータチャンバ５を形成するとともに、ロータ４
のオイルシール、サイドシール等のシール部材（図示省
略）が摺動するシール摺動面６が形成されている。また
、サイドハウジング１には、このシール摺動面６に開口
するように、サイド吸気ボート７が形成される。さらに
、シール摺動面６の外側にはロータハウジング３との接
合面８が設けられ、該接合面８には冷却水を流通させる
ためのウォータジャケット９、テンションボルト挿通穴
１０．および位置決めボルト挿通穴１１がそれぞれ形成
される。また、ロータハウジング３には、排気ポート１
２が形成されるとともに、２つの点火プラグ１３，１４
が挿入される。(Embodiment) Referring to FIGS. 1 and 2, a side housing 1 to which the present invention is applied has an insertion hole 2 formed in the center thereof into which a rotor eccentric shaft is inserted. A rotor chamber 5 for accommodating the rotor 4 is formed around the insertion hole 2 in cooperation with the rotor housing 3.
A seal sliding surface 6 is formed on which seal members (not shown) such as oil seals and side seals slide. Further, a side intake boat 7 is formed in the side housing 1 so as to open onto the seal sliding surface 6. Furthermore, a joint surface 8 with the rotor housing 3 is provided on the outside of the seal sliding surface 6, and the joint surface 8 includes a water jacket 9 for circulating cooling water, tension bolt insertion holes 10. and a positioning bolt insertion hole 11 are formed respectively. The rotor housing 3 also has an exhaust port 1.
2 is formed, and two spark plugs 13, 14 are formed.
is inserted.
第３図に示されるように、摺動面６には摺動特性の良い
Ｃｒ５Ｃｚ等の硬質材料の溶射層１５が設けられている
ａ Ｃｒ ３ Ｃ２は断熱性能が低い反面、高温でも摺
動特性に優れている。断熱性能の良いものとしては酸化
物があるが、これは高温での摺動特性に劣るという欠点
があるため、摺動面６は、上記のような炭化物層が好ま
しい。そして、接合面８および溶射層１５の下、さらに
は、ウォータジャケット９の内壁等の母材（Ａ１合金）
１６の表面には、陽極酸化を施してなる陽極酸化膜１７
（γＡ Ｑ ２０３）が設けられている。陽極酸化膜１
７は断熱性を与えるものであり、厚さは５０μ以上であ
ることが望ましい。As shown in FIG. 3, the sliding surface 6 is provided with a sprayed layer 15 of a hard material such as Cr5Cz that has good sliding properties.a Cr3C2 has low heat insulation performance, but has good sliding properties even at high temperatures. Excellent. Although oxides have good heat insulating properties, they have the disadvantage of poor sliding properties at high temperatures, so the sliding surface 6 is preferably a carbide layer as described above. Under the bonding surface 8 and the thermal spray layer 15, and furthermore, the base material (A1 alloy) of the inner wall of the water jacket 9, etc.
On the surface of 16, an anodic oxide film 17 is formed by performing anodic oxidation.
(γA Q 203) is provided. Anodic oxide film 1
7 provides heat insulation properties, and the thickness is preferably 50 μm or more.
なお、陽極酸化膜１７は硬質であるため、硬質材料の溶
射層１５を砥石で仕上げ研磨する際、接合面８の陽極酸
化膜１７も同時に研磨され、軟質の軽金属による砥石の
目詰りが解消できるという点でも有利である。Note that since the anodic oxide film 17 is hard, when the thermal sprayed layer 15 of the hard material is finished polished with a grindstone, the anodic oxide film 17 on the joint surface 8 is also polished at the same time, and clogging of the grindstone due to soft light metal can be eliminated. It is also advantageous in this respect.
実施例１では、上記サイドハウジング１の母材１６ （
ＡＣ４ＡＴ６）について、シール摺動面６が１５０μの
深さの四部を形成するように１段下げ加工を行った０次
に、シール摺動面６およびロータハウジング３との接合
面８を陽極酸化して両者の表面に１００μの厚さの陽極
酸化膜１７を形成した。次に、シール摺動面６にのみ爆
発溶射（Ｄガン溶射）を施し、研磨加工を行って、Ｃｒ
３Ｃ２８０％−Ｎ Ｌ Ｃｒ ２５％からなる厚さ５０
μの溶射層１５を形成した。ここで、プラズマ溶射では
なくて爆発溶射を用いたのは、爆発溶射の方が粒子の速
度が大きいので、陽極酸化膜１７の表面粗さがＲａ７．
Ｏμ以下であっても、密着強度が十分な溶射層１５を得
ることができるからである・
発明者は１以上のような実施例１のサイドハウジングの
他に、下記第１表に示すサイドハウジングを設けた。In Example 1, the base material 16 (
AC4AT6), the seal sliding surface 6 was lowered one step so that it formed four parts with a depth of 150μ. Next, the seal sliding surface 6 and the joint surface 8 with the rotor housing 3 were anodized. An anodic oxide film 17 with a thickness of 100 μm was formed on both surfaces. Next, explosive thermal spraying (D gun thermal spraying) is applied only to the seal sliding surface 6, followed by polishing.
Thickness 50 consisting of 3C280%-N L Cr 25%
A sprayed layer 15 of μ was formed. Here, the reason why explosive spraying was used instead of plasma spraying is that explosive spraying has a higher particle velocity, so the surface roughness of the anodic oxide film 17 is Ra7.
This is because a thermal sprayed layer 15 with sufficient adhesion strength can be obtained even if the adhesive strength is less than 0 μ has been established.
第１表
以下、これらのサイドハウジングを用いて行ったベンチ
テストについて述べる。Table 1 below describes bench tests conducted using these side housings.
テストは、サイドハウジングを１３００ｃｃ、２００Ｐ
Ｓのエンジンに組み込み、まず１５００ｒｐｍの無負荷
状態で２０秒運転し１次いでアクセル全開の無負荷状態
で７００Ｏｒｐｍまで回転を上げて１．２５分維持した
後、アクセルをもどし、無負荷として１５００ｒｐｍま
で下げる工程を１サイクルとして、これを６０００サイ
クル行った・
第４図は、本ステトに用いたインナおよびアウタのオイ
ルシール１８を示す、１９はＣｒめっき層、Ｌはリップ
幅である。オイルシール１８は合金鋳鉄製であり、その
組成は下記第２表に示す通りである。The test was with a side housing of 1300cc and 200P.
Built into the S engine, first run for 20 seconds at 1500 rpm with no load, then increase the rotation to 700 rpm with the accelerator fully open and maintain it for 1.25 minutes, then release the accelerator and lower the speed to 1500 rpm with no load. The process was regarded as one cycle, and this was repeated for 6000 cycles. Figure 4 shows the inner and outer oil seals 18 used in this test, 19 is the Cr plating layer, and L is the lip width. The oil seal 18 is made of alloyed cast iron, and its composition is as shown in Table 2 below.
第２表 テストの結果は、下記第３表に示す通りである。Table 2 The test results are shown in Table 3 below.
ここで、オイルシールの摩耗量は、リップ幅りの値で示
している６サイドハウジングの壁温は、１８０ＰＳ時に
、ホットゾーンにて、表面より１゜５ｎｉｎ下の場所で
測定したものである。Here, the wear amount of the oil seal is shown as the value of the lip width. The wall temperature of the 6-side housing was measured at 180 PS at a location 1° 5 nin below the surface in the hot zone.
第３表
このように、実施例１に係るサイドハウジングでは、シ
ール摺動面は他のものに劣らぬ耐摩耗性を示し、かつオ
イルシールとの相性も悪くない。Table 3 As can be seen, in the side housing according to Example 1, the seal sliding surface exhibits wear resistance comparable to other types, and is compatible with the oil seal.
また、サイドハウジングのｇ温は約１０℃も上昇して断
熱性において優れていることを示しており、燃焼性の向
上がもたらされる。Furthermore, the g-temperature of the side housing increased by about 10°C, indicating excellent heat insulation properties, resulting in improved combustibility.
次に、溶射層の密着性を評価するテストについて説明す
る。Next, a test for evaluating the adhesion of the sprayed layer will be explained.
テストは、５００℃に１０分加熱保持後、水冷して２０
℃に１分保持する工程を１サイクルとして、これを３０
サイクル繰り返した。The test was conducted by heating and holding at 500℃ for 10 minutes, then cooling with water for 20 minutes.
One cycle is the process of holding at ℃ for 1 minute, and this is 30
The cycle was repeated.
テストに用いたサイドハウジングのシール慴動面の構成
（シール摺動面以外の構成は実施例１と同じ）とモス１
−結果との関係を、下記第４表に示す。The configuration of the seal sliding surface of the side housing used in the test (the configuration other than the seal sliding surface is the same as in Example 1) and Moss 1
- The relationship with the results is shown in Table 4 below.
第４表
比較例４のように、単純に溶射層を厚くしただけでは、
溶射層と母材との熱膨張差の影響が顕著となり、熱衝撃
に対して弱くなる。これに対し、実施例２では、断熱作
用をもたらす被ｒｌ！層の厚さの合計は比較例４と変わ
らないものの、その半分近くを母材と密着した陽極酸化
膜で占めており、溶射層自体は薄いため、熱膨張差の影
響は少なくなる。As shown in Comparative Example 4 in Table 4, simply increasing the thickness of the sprayed layer will not
The effect of the difference in thermal expansion between the sprayed layer and the base material becomes significant, making it vulnerable to thermal shock. On the other hand, in Example 2, the rl! Although the total thickness of the layers is the same as Comparative Example 4, nearly half of it is occupied by the anodic oxide film that is in close contact with the base material, and the sprayed layer itself is thin, so the influence of the difference in thermal expansion is reduced.
なお１本発明では、前記実施例のように、ロータハウジ
ングとの接合面に陽極酸化膜を設けることを必ずしも要
しない。Note that in the present invention, it is not necessarily necessary to provide an anodic oxide film on the joint surface with the rotor housing as in the above embodiments.
また、溶射層を形成する硬質材料は、セラミックの他に
、Ｃｏ、Ｍｏおよび５ｉｔｉ−混ぜた硬質の合金であっ
てもよい。In addition to ceramics, the hard material forming the sprayed layer may be a hard alloy containing Co, Mo, and 5ite.
また、サイドハウジングをＭｇ合金によって構成しても
差し支えない。Furthermore, the side housing may be made of an Mg alloy.
その他、本発明の要旨を逸脱しない範囲で１種々の変形
を施すことが可能である。In addition, various modifications can be made without departing from the gist of the present invention.
（発明の効果）
本発明によれば、ロータリピストンエンジンの軽合金製
サイドハウジングにおいて、シール摺動面に耐摩耗性を
付与する硬質材料の溶射層の密着性を低下させることな
く、高い断熱性を確保することができ、もってエンジン
の燃焼性を向上することができるという優れた効果が得
られる。(Effects of the Invention) According to the present invention, in a light alloy side housing of a rotary piston engine, high heat insulation properties can be achieved without reducing the adhesion of the thermally sprayed layer of hard material that provides wear resistance to the seal sliding surface. This provides an excellent effect of improving the combustibility of the engine.
第１１２Ｉは１本発明の実施例に係るサイドハウジング
の正面図、第２図は、第１図のサイドハウジングを使用
するロータリピストンエンジンの断面図、第３図は第１
図の■−■線に沿う拡大断面図。
第４図は、ベンチテス１−に用いるオイルシールの正面
図である。
■・・・・・・サイドハウジング、４・・・・・・ロー
タ、６・・・・・・摺動面、１５・・・・・・溶射層、
１７・・・・・・陽極酸化膜。
第１図
第３図112I is a front view of a side housing according to an embodiment of the present invention, FIG. 2 is a sectional view of a rotary piston engine using the side housing of FIG. 1, and FIG.
An enlarged sectional view taken along the line ■-■ in the figure. FIG. 4 is a front view of the oil seal used in the Ventilator 1-. ■...Side housing, 4...Rotor, 6...Sliding surface, 15...Thermal spray layer,
17...Anodic oxide film. Figure 1 Figure 3
Claims (1)
ール部材が摺動するシール摺動面に硬質材料の溶射層を
設けるとともに、該溶射層の下に陽極酸化膜を形成した
ことを特徴とするロータリピストンエンジンのサイドハ
ウジング。(1) In a light alloy side housing, a sprayed layer of a hard material is provided on the seal sliding surface on which the seal member of the rotor slides, and an anodic oxide film is formed under the sprayed layer. Piston engine side housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61101291A JPH0686816B2 (en) | 1986-04-30 | 1986-04-30 | Side housing of rotary piston engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61101291A JPH0686816B2 (en) | 1986-04-30 | 1986-04-30 | Side housing of rotary piston engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62258121A true JPS62258121A (en) | 1987-11-10 |
| JPH0686816B2 JPH0686816B2 (en) | 1994-11-02 |
Family
ID=14296740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61101291A Expired - Lifetime JPH0686816B2 (en) | 1986-04-30 | 1986-04-30 | Side housing of rotary piston engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0686816B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000014396A1 (en) * | 1998-09-04 | 2000-03-16 | Tadashi Yoshida | Adiabatic internal combustion engine |
| KR20030077864A (en) * | 2002-03-27 | 2003-10-04 | 김동현 | Sealing device for rotary engine |
-
1986
- 1986-04-30 JP JP61101291A patent/JPH0686816B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000014396A1 (en) * | 1998-09-04 | 2000-03-16 | Tadashi Yoshida | Adiabatic internal combustion engine |
| KR20030077864A (en) * | 2002-03-27 | 2003-10-04 | 김동현 | Sealing device for rotary engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0686816B2 (en) | 1994-11-02 |
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