JPS59162343A - Preventing method of seizure in engine - Google Patents

Preventing method of seizure in engine

Info

Publication number
JPS59162343A
JPS59162343A JP3869683A JP3869683A JPS59162343A JP S59162343 A JPS59162343 A JP S59162343A JP 3869683 A JP3869683 A JP 3869683A JP 3869683 A JP3869683 A JP 3869683A JP S59162343 A JPS59162343 A JP S59162343A
Authority
JP
Japan
Prior art keywords
piston
engine
cylinder
oil
lubricant
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.)
Pending
Application number
JP3869683A
Other languages
Japanese (ja)
Inventor
Shinji Shiyudo
首藤 伸二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP3869683A priority Critical patent/JPS59162343A/en
Publication of JPS59162343A publication Critical patent/JPS59162343A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J1/00Pistons; Trunk pistons; Plungers
    • F16J1/02Bearing surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To eliminate any necessity for performing the break-in of an engine and prevent the seizure caused between a piston and a cylinder, by placing the piston and the cylinder, on whose slide surfaces a lubricant is applied, in an oven of high temperature about equal to the temperature at operation of the engine so as to bake lubricating oil. CONSTITUTION:A supporting table 2 driven to be turned in the direction of an arrow head X1 is arranged in an electric oven 1, and a piston 3 is mounted on the table 2 so as to place a piston crown 4 in a bottom position. Then after setting the electric oven 1 to a temperature (for instance, 200 deg.C) about equal to the temperature when an engine is operated, oil is blown from an oil nozzle 6 while turning the table 2, thus baking the oil.

Description

【発明の詳細な説明】 本発明はエンジンの使用初期の馴らし運転を不要とする
エンジンの焼付き防止方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing engine seizure, which eliminates the need for a break-in operation at the initial stage of engine use.

従来エンジンの馴らし運転が済む迄の間におけるピスト
ンの焼付き防止のだめ、ピストンの外径やシリンダの内
径の仕上精度の向上とアルマイト処理により初期馴染み
の向上を図っている。しかしそれでもある程度の馴らし
運転は必要である。
Conventionally, in order to prevent the piston from seizing until the engine is run-in, we aim to improve the initial break-in by improving the finishing accuracy of the piston's outer diameter and cylinder's inner diameter, and by alumite treatment. However, a certain amount of break-in is still necessary.

又ピストン摺動部の潤滑油切れにより焼付きが発生して
しまう場合があることから、その防止のためピストンと
シリンダ間のクリヤランスが必要である。ところがピス
トンの外周面は最も重要な熱通路であるため、シリンダ
に対し最小の間隙と最大の接触面積が要求される。又ピ
ストン間隙の大きな場合はピストンの上下死点における
加速度変化の際に、ピストンが一方のシリンダ壁から他
方のシリンダ壁へたたきつけられ、いわゆるピストンス
ラップを生ずる。このピストンスラップは、ピストンリ
ング及びピストンのリング溝の摩耗を早め、リングのガ
ス洩れ防止機能を阻害し、潤滑油消費量を増大させるば
かりでなくピストン回り一方馴らし運転の済んだエンジ
ンにおける馴染みの効いたピストン及びシリンダの摺動
面には、エンジン作動時の高温により変化したオイルの
成分が密着し、それがピストンとシリンダ間を潤滑する
ことによりオイル切れを少なくシ、摩擦抵抗を減してピ
ストンの焼付きを防止している。
Furthermore, seizure may occur due to lack of lubricating oil in the piston sliding portion, so clearance between the piston and cylinder is required to prevent this. However, since the outer circumferential surface of the piston is the most important heat path, a minimum gap and maximum contact area with respect to the cylinder are required. If the piston gap is large, the piston will slam from one cylinder wall to the other cylinder wall when the piston changes its acceleration at its vertical dead center, resulting in so-called piston slap. This piston slap accelerates the wear of the piston ring and the piston ring groove, impedes the gas leakage prevention function of the ring, and increases lubricant oil consumption. Oil components that have changed due to high temperatures during engine operation adhere to the sliding surfaces of the piston and cylinder, and this lubricates the space between the piston and cylinder, reducing oil depletion and reducing frictional resistance. prevents burn-in.

本発明は、馴らし運転後のピストン及びシリンダの摺動
面の変化に着目し、その様な状態をピストン又はシリン
ダをエンジンに組み込む前に形成しておくことによって
、エンジンの使用初期に発生するピストンとシリンダ間
の焼付き等の不具合を防止すると共にエンジンの馴らし
運転を不要として使用者の便宜を図ることを目的として
いる。
The present invention focuses on changes in the sliding surfaces of pistons and cylinders after running-in, and by creating such conditions before assembling the pistons or cylinders into the engine, the pistons that occur during the initial use of the engine can be reduced. The purpose is to prevent problems such as seizure between the engine and the cylinder, and to provide convenience to the user by eliminating the need for engine break-in.

上記目的を達成するため本発明は、ピストン、シリンダ
又はその両方をエンジン作動時と同程度の高温状態にあ
る高温炉の中に入れ、摺動面にオイルを霧状に散布して
付着焼付け、次にオイルの焼付いた上記ピストン、シリ
ンダ又はその両方をエンジンに組み込むことを特徴とし
ている。
In order to achieve the above-mentioned object, the present invention places a piston, a cylinder, or both in a high-temperature furnace at a temperature similar to that during engine operation, sprays oil on the sliding surfaces in a mist, and bakes the oil to adhere to the sliding surface. Next, the oil-coated piston, cylinder, or both are incorporated into an engine.

次に図面に基づいて本発明を説明する。第1図は本発明
による焼付き防止方法を実施するだめの装置の縦断側面
略図であり、ピストンを対象とする場合を示している。
Next, the present invention will be explained based on the drawings. FIG. 1 is a schematic longitudinal sectional side view of a device for carrying out the seizure prevention method according to the present invention, and shows a case in which a piston is targeted.

例えば電気炉よりなる高温炉1内には矢印X□ガ向に回
転駆動される支持テーブル2が配置され、テープ/I/
2Vcはピストン3がピストンクラウン4が下になる姿
勢で載置されている。高温炉1の側壁5にはオイルノズ
μ6が設けられ、ノズJv6の噴射ロアがピストン8の
摺動面8に向けられている。
For example, a support table 2 that is rotatably driven in the direction of arrow
2Vc, the piston 3 is placed with the piston crown 4 facing down. An oil nozzle μ6 is provided on the side wall 5 of the high-temperature furnace 1, and the injection lower part of the nozzle Jv6 is directed toward the sliding surface 8 of the piston 8.

第1図の装置を用い、まずエンジン作動時と同程度の温
度(例えば約200°C)に設定された高温炉l内のテ
ープ/L/2にピストン3を置き、テープ)v2を矢印
X□力方向回転させる。次にオイルノズル6の噴射ロア
からオイ)V(@滑剤の一例)を霧状に噴射してピスト
ン3の摺動面8にオイルを付着させる。付着したオイル
は高温のため変化し、いわゆる「こびシついた」状態で
オイルの変化した成分が摺動面8に密着する。これによ
如得られるピストン3にはオイルの変化した成分が摺動
面に密着することによって、通常の馴らし運転によって
得られる馴染みの効いた従来のピストンと同等の表面処
理が施されていることになる。このピストン3をエンジ
ンに組み込めば、そのエンジンは馴らし運転をすること
なく、既に馴らし運転をしたと同等の状態にあることと
なり、エンジンの使用初期においてもピストン8とシリ
ンダ間で焼付きの発生するおそれはない。
Using the apparatus shown in Fig. 1, first place the piston 3 on tape/L/2 in a high temperature furnace l set at a temperature similar to that during engine operation (for example, about 200°C), and point the tape)v2 at the arrow □Rotate in the force direction. Next, oil) V (an example of a lubricant) is sprayed in a mist form from the injection lower part of the oil nozzle 6 to adhere the oil to the sliding surface 8 of the piston 3. The attached oil changes due to the high temperature, and the changed components of the oil adhere to the sliding surface 8 in a so-called "sticky" state. The piston 3 thus obtained has a surface treatment equivalent to that of a conventional piston, which has the same familiarity as that obtained through normal running-in operation, due to the changed components of the oil coming into close contact with the sliding surface. become. If this piston 3 is installed in an engine, the engine will be in the same state as if it had already been run-in without running it, and seizure will not occur between the piston 8 and the cylinder even in the early stages of engine use. There's no fear.

なお第1図の説明ではピストン3に表面処理を施す場合
を説明したが、シリンダの摺動面に同様の処理を施して
エンジンに組み込んでもよく、又ピストン8とシリンダ
の両方に処理を施すよってしてもよい。又ピストン3と
しては銅、ケイ素等を含むアルミニウム合金製や大型デ
ィーゼ/V機関に用いられる鋳鉄製の他、通常用いられ
る材質のものであれば何でもよい。シリンダについても
同様で、アルミニウムや鋳鉄製の池通常の材質のもので
あれば何でもよく、クロムめっきの施された亀のでもよ
い。シリンダライナを有するシリンダについてはシリン
ダライナの摺動面て処理を施すようKすればよい。又使
用する潤滑剤としては通常のエンジンオイルに限られる
ことはなく、一般の潤滑剤であって同等の処理層が摺動
面に形成されるものであればよく、例えば炭素やモリブ
デン剤 の微粉等の固体潤滑Xを混入するようにしてもよい。又
摺動面8を表面処理前にいく分荒しておいて、オイルの
付着を良くすることもできる。
In the explanation of FIG. 1, the piston 3 is subjected to surface treatment, but the sliding surface of the cylinder may be similarly treated and incorporated into the engine, or both the piston 8 and the cylinder may be treated. You may. The piston 3 may be made of an aluminum alloy containing copper, silicon, etc., cast iron used in large diesel/V engines, or any other commonly used material. The same goes for the cylinder; it can be made of any standard material such as aluminum or cast iron, or even chrome-plated tortoise. For cylinders with cylinder liners, the sliding surface of the cylinder liner may be treated. Furthermore, the lubricant to be used is not limited to ordinary engine oil, but any general lubricant that can form an equivalent treated layer on the sliding surface, such as fine powder of carbon or molybdenum agent, may be used. A solid lubricant X such as the following may be mixed. Furthermore, the sliding surface 8 can be roughened to some extent before surface treatment to improve oil adhesion.

以上説明したように本発明によると、摺動面に潤滑剤の
塗布されたピストン3、シリンダ又はその両方をエンジ
ン作動時と同程度の高温状態にある高温炉1の中に入れ
、その摺動面8に潤滑剤を焼付け、次に潤滑剤の焼付い
たピストン3、シリンダ又は、その両方をエンジンに組
み込むようにしたので、馴らし運転後のピストン及びシ
リンダの摺動面と同等の状態を、馴らし運転前に作るこ
とができ、次の効果が期待できる。
As explained above, according to the present invention, the piston 3, the cylinder, or both, whose sliding surfaces are coated with lubricant, are placed in the high-temperature furnace 1, which is at a high temperature similar to that during engine operation, and the sliding surface is The lubricant was baked onto the surface 8, and then the piston 3, the cylinder, or both with the lubricant baked on, was installed in the engine, so the condition equivalent to the sliding surface of the piston and cylinder after the break-in operation was maintained. It can be made before driving, and the following effects can be expected.

(a)  エンジンの使用初期に発生するピストン8と
シリンダ間の焼付きを防止できる。
(a) It is possible to prevent seizure between the piston 8 and the cylinder, which occurs during the initial use of the engine.

(ハ) エンジンの使用初期から馴染みの効いたピスト
ン3及びシリンダ関係が得られるので、ピストン3と、
シリンダとの間隙を充分小さくでき、又接触面積を大き
くできる。
(c) Since a familiar piston 3 and cylinder relationship can be obtained from the beginning of engine use, the piston 3 and
The gap with the cylinder can be sufficiently reduced, and the contact area can be increased.

(C)ヒストンヌラップの発生が防止でき、ピストンリ
ングやリング溝は摩耗し難くなるので耐久性が向上する
(C) The occurrence of histone null wrap can be prevented, and the piston rings and ring grooves are less likely to wear out, so durability is improved.

に) ピストン回りの異音の発生を防止できる。2) Can prevent abnormal noises around the piston.

(e)  エンジンの馴らし運転が不要となり、使用者
の便宜を図ることができる。
(e) There is no need to run the engine for break-in, making it more convenient for the user.

なお第1図は単体不連続処理の場合であるが、焼付塗装
の場合と同様に連続処理も可能である。
Although FIG. 1 shows the case of single discontinuous treatment, continuous treatment is also possible as in the case of baking painting.

又潤滑剤の塗布工程を高温炉1外で予め行なってIn addition, the lubricant application process was performed in advance outside the high temperature furnace 1.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明による焼付き防止方法を実施するための
装置の縦断側面略図である。1・・・高温炉、3・・・
ピストン、8・・−摺動面 特許出願人 川崎重工業株式会社 第1図
FIG. 1 is a schematic longitudinal sectional side view of an apparatus for carrying out the anti-seizing method according to the present invention. 1... High temperature furnace, 3...
Piston, 8...-Sliding surface Patent applicant Kawasaki Heavy Industries, Ltd. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 摺動面に潤滑剤の塗布されたピストン、シリンダ又はそ
の両方をエンジン作動時と同程度の高温状aKある高温
炉の中に入れ、その摺動面に潤滑剤を焼付け、次に潤滑
剤の焼付いた上記ピストン、シリンダ又はその両方をエ
ンジンに組み込むことを特徴とするエンジンの焼付き防
止方法。
The piston, cylinder, or both, whose sliding surfaces are coated with lubricant, are placed in a high-temperature furnace at a temperature similar to that during engine operation, the lubricant is baked onto the sliding surfaces, and then the lubricant is applied. A method for preventing seizure of an engine, characterized by incorporating the piston, cylinder, or both of them which have been seized into the engine.
JP3869683A 1983-03-08 1983-03-08 Preventing method of seizure in engine Pending JPS59162343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3869683A JPS59162343A (en) 1983-03-08 1983-03-08 Preventing method of seizure in engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3869683A JPS59162343A (en) 1983-03-08 1983-03-08 Preventing method of seizure in engine

Publications (1)

Publication Number Publication Date
JPS59162343A true JPS59162343A (en) 1984-09-13

Family

ID=12532467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3869683A Pending JPS59162343A (en) 1983-03-08 1983-03-08 Preventing method of seizure in engine

Country Status (1)

Country Link
JP (1) JPS59162343A (en)

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