JPS582456A - Piston type carburetor - Google Patents
Piston type carburetorInfo
- Publication number
- JPS582456A JPS582456A JP10002581A JP10002581A JPS582456A JP S582456 A JPS582456 A JP S582456A JP 10002581 A JP10002581 A JP 10002581A JP 10002581 A JP10002581 A JP 10002581A JP S582456 A JPS582456 A JP S582456A
- Authority
- JP
- Japan
- Prior art keywords
- piston valve
- aluminum
- guide tube
- carburetor
- type carburetor
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
- F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
- F02M7/14—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle
- F02M7/16—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis
- F02M7/17—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis by a pneumatically adjustable piston-like element, e.g. constant depression carburettors
Abstract
Description
【発明の詳細な説明】
本発明は吸気−を上下移動し、ベンチュリ面積を増減す
るピストン弁を有するピストン弁式気化器に関するもの
である。 □
一般にこの種気化器のピ、ス１ン弁は械化器本体の案内
筒と接触した状態で摺動自在に装着されるものであり、
このようなピストン弁は常に案内筒内をスムーズに移動
し、しかも摺動面の摩耗が少なく、長期間安定した作動
を行なうことが必要である。ところが最近では気化器の
軽量化が望まれており、ピストン弁あるいは気化器本体
にアルミニウム若しくはアルミニウム合金を使用する傾
向が多くなってきているが、アルミニウム若しくはアル
ミニウム合金を使用したピストン弁及び気化器本体の案
内筒は喰い付、コジレ、カジリ等を発生させ、作動不良
を生じやすいと共に軟質金属であることから摩耗しやす
く耐久性にとぼしいという欠点がある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piston valve type carburetor having a piston valve that moves intake air up and down and increases and decreases the venturi area. □ Generally, the piston valve of this type of vaporizer is slidably installed in contact with the guide tube of the vaporizer body.
Such a piston valve must always move smoothly within the guide cylinder, have little wear on the sliding surfaces, and operate stably for a long period of time. However, in recent years, there has been a desire to reduce the weight of carburetors, and there has been an increasing trend to use aluminum or aluminum alloys for the piston valves or carburetor bodies. The guide tube has the disadvantage that it tends to bite, twist, and galle, resulting in malfunction, and because it is made of soft metal, it is prone to wear and has low durability.
本発明は、上記問題点に鑑みて作動不良を解消し、更に
耐摩耗性に優れたピストン弁式気化器を提供するもので
、その特徴とするところは、アルミニウム若しくはアル
ミニウム合金により構成されたピストン弁あるいはピス
トン弁の案内筒を有する気化器において、前記ピストン
弁の摺動面あるいは案内筒の摺動面に二硫化モリブデン
の結晶を生成したアルマイト被膜を形成したことにある
。In view of the above-mentioned problems, the present invention provides a piston valve type carburetor which eliminates malfunction and has excellent wear resistance.The present invention is characterized by a piston made of aluminum or an aluminum alloy. In a vaporizer having a guide tube for a valve or a piston valve, an alumite coating containing crystals of molybdenum disulfide is formed on the sliding surface of the piston valve or the sliding surface of the guide tube.
以下図にもとづいて説明すれば、■は気化器本体、２は
吸気路、３は燃料室、４は吸気路、２内を上下移動する
ピストン弁、４′はピストン弁４の摺動面、５はピスト
ン弁４を摺動自在に支持する案円筒、５′は案内筒５の
摺動面、６はピストン弁４ソトニードル、８はメインジ
ェット、９はピストン弁４の上端に取着けたダイヤフラ
ム、１ｏはダイヤフラム９の上部に形成された負圧室、
ｉｌはピストン弁４の上部に縮設し、ピストン弁４を常
ここにおいて本発明は、ピストン弁４あるいは気化器本
体の案内筒５をアルミニウム若しくはアルミニウム合金
１３により構成し、そのアルミニウム１３表面にアルマ
イト処理をほどこした後、更にそれをテトラチオモリブ
デン酸アン−モニウムの水容液中に入れ、このアルミニ
ウム１３を陽極として二次電解し、前記アルマイト被膜
１４中に二硫化モリブデンの結晶１５を生成するもので
あし、その受圧板４ａの上側の室を負圧室１０、下側の
室を大気室１２とし、前記受圧板４ａにより吸気路２内
の負圧を感知する式の可変ベンチュリ式気化器に本発明
を実施した例を示し、この場合にはピストン弁４及び受
圧板４ａの摺動面４′、４ａ′またはそれに対する気化
器本体側の摺動面５゛、５ ａ／のどちらか一方に二硫
化モリブデンの結晶を生成したアルマイト被膜を形成す
ればよい。To explain based on the following figures, ■ is the carburetor main body, 2 is the intake passage, 3 is the fuel chamber, 4 is the intake passage, the piston valve that moves up and down within 2, 4' is the sliding surface of the piston valve 4, 5 is a plan cylinder that supports the piston valve 4 in a slidable manner, 5' is a sliding surface of the guide cylinder 5, 6 is a sowing needle for the piston valve 4, 8 is a main jet, 9 is a diaphragm attached to the upper end of the piston valve 4, 1o is a negative pressure chamber formed in the upper part of the diaphragm 9;
il is condensed at the upper part of the piston valve 4, and the piston valve 4 is always located here.In the present invention, the piston valve 4 or the guide cylinder 5 of the carburetor main body is made of aluminum or an aluminum alloy 13, and the surface of the aluminum 13 is anodized. After the treatment, it is further placed in an aqueous solution of ammonium tetrathiomolybdate and subjected to secondary electrolysis using this aluminum 13 as an anode to form molybdenum disulfide crystals 15 in the alumite coating 14. This is a variable venturi type carburetor in which the upper chamber of the pressure receiving plate 4a is a negative pressure chamber 10, the lower chamber is an atmospheric chamber 12, and the negative pressure in the intake passage 2 is sensed by the pressure receiving plate 4a. An example in which the present invention is implemented is shown in FIG. An alumite coating containing crystals of molybdenum disulfide may be formed on one side.
以上の如く、本発明は吸気路を上下移動し、ベンチュリ
面積を増減するピストン弁を有するピストン弁式気化器
において、ピストン弁あるいは気化器本体をアルミニウ
ム若しくはアルミニウム合４・
金にて構成し、そのアルミニウム表面に二硫化もリブデ
ンの結晶を生成したアルマイト被膜を形成したので（ピ
ストン弁あるいは案内筒の摺動面を硬くできると共に摩
擦係数の大幅な低減を計ることができ、耐摩耗性にすぐ
れ、且つ作動性が良好で、喰い付、コジレ、カジリ等の
弊害のないピストン弁式気化器が得られる。又、可変ベ
ンチュリ式気化器においては、更にピストン弁の機関の
運転状態に対する応答性がすばやくなると共に耐摩耗性
がすぐれていることから空気及び燃料計量特性が長期間
安定し、常に機関に対する空燃比を初期設定値に近い値
で維持することができるため、−テイング等にくらべ、
被膜の厚みを簿くでき仕上がり精度が向上するなど、そ
の実用的効果大なるものである。As described above, the present invention provides a piston valve type carburetor having a piston valve that moves up and down the intake passage to increase or decrease the venturi area, in which the piston valve or the carburetor body is made of aluminum or aluminum alloy 4, and gold. By forming an alumite film containing disulfide and livedenite crystals on the aluminum surface, it is possible to harden the sliding surface of the piston valve or guide cylinder and significantly reduce the coefficient of friction, resulting in excellent wear resistance. In addition, it is possible to obtain a piston valve type carburetor that has good operability and is free from problems such as clogging, twisting, and galling.Furthermore, in a variable venturi type carburetor, the piston valve has a quick response to the engine operating condition. In addition, due to its excellent wear resistance, the air and fuel metering characteristics are stable for a long period of time, and the air-fuel ratio for the engine can always be maintained at a value close to the initial setting value.
It has great practical effects, such as being able to control the thickness of the coating and improving finishing accuracy.
第１図は本発明の実施例を示す縦断面図、第２図、第３
図は本発明の他の実施例を示す縦断面図第４図はピスト
ン弁あるいは案内筒の一部拡大組織図である。
ｌ・・−・・・気化器本体、２・・・・・吸気路、４・
・・・・ピストン弁、１４・・・−・・・アルマイト被
膜、１５・・・・・・二硫化モリブデンの結晶。
特許出願人 ティケイ気化器株式会社
代表者小林忠夫
第１図
０FIG. 1 is a vertical sectional view showing an embodiment of the present invention, FIG.
The figure is a longitudinal sectional view showing another embodiment of the present invention. FIG. 4 is a partially enlarged organizational diagram of a piston valve or a guide cylinder. l... Carburetor body, 2... Intake path, 4...
... Piston valve, 14 ... Alumite coating, 15 ... Molybdenum disulfide crystal. Patent Applicant Tikei Vaporizer Co., Ltd. Representative Tadao Kobayashi Figure 1 0
Claims (1)
たピストン弁あるいはピストン弁の案内筒を有する気化
器において、前記ピストン弁の摺動面あるいは案内筒の
摺動面に二硫化モリブデンの結晶を生成したアルマイト
被膜、を形成したことを特徴とするピストン弁式気化器
。In a vaporizer having a piston valve or a piston valve guide tube made of aluminum or an aluminum alloy, an alumite coating containing crystals of molybdenum disulfide is formed on the sliding surface of the piston valve or the sliding surface of the guide tube. A piston valve type carburetor that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10002581A JPS582456A (en) | 1981-06-26 | 1981-06-26 | Piston type carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10002581A JPS582456A (en) | 1981-06-26 | 1981-06-26 | Piston type carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS582456A true JPS582456A (en) | 1983-01-08 |
Family
ID=14262991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10002581A Pending JPS582456A (en) | 1981-06-26 | 1981-06-26 | Piston type carburetor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS582456A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53134744A (en) * | 1977-04-28 | 1978-11-24 | Fujikura Ltd | Method of reinforcing surface of anodized film of aluminum or aluminum allo y |
| JPS5650248A (en) * | 1979-10-02 | 1981-05-07 | Yamaha Motor Co Ltd | Slidable valve type carburetor |
-
1981
- 1981-06-26 JP JP10002581A patent/JPS582456A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53134744A (en) * | 1977-04-28 | 1978-11-24 | Fujikura Ltd | Method of reinforcing surface of anodized film of aluminum or aluminum allo y |
| JPS5650248A (en) * | 1979-10-02 | 1981-05-07 | Yamaha Motor Co Ltd | Slidable valve type carburetor |
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