JPH0188052U - - Google Patents
Info
- Publication number
- JPH0188052U JPH0188052U JP18379687U JP18379687U JPH0188052U JP H0188052 U JPH0188052 U JP H0188052U JP 18379687 U JP18379687 U JP 18379687U JP 18379687 U JP18379687 U JP 18379687U JP H0188052 U JPH0188052 U JP H0188052U
- Authority
- JP
- Japan
- Prior art keywords
- bench lily
- negative pressure
- butterfly
- throttle valve
- variable
- 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
- 241000234435 Lilium Species 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 2
- 230000001771 impaired effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000001133 acceleration Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Description
第１図は本考案の可変ベンチユリ気化器の実施
例の断面図、第２図は大気圧室への負圧取入口に
作用する吸気負圧と蝶形絞り弁の開度との関係を
本考案の可変ベンチユリ気化器と特開昭５６−５
２５５６号開示の可変ベンチユリ気化器とについ
て比較した図、第３図は固定ベンチユリを有する
可変ベンチユリ気化器の従来構成の断面図、第４
図は加速時、負圧室に空気を導入して加速性を改
善した可変ベンチユリ気化器の構成例、第５図は
可変ベンチユリ気化器の蝶形絞り弁と摺動弁との
間に加速時発生する負圧の時間的経過を示す図、
第６図は蝶形絞り弁の開度が小さいときの燃料の
微粒化を促進するため、大気圧室に吸気負圧を導
びく可変ベンチユリ気化器の従来構成例である。
符号の説明：１……筐体、２……主吸気通路、
３……蝶形絞り弁、４……摺動弁、５……可変ベ
ンチユリ、６……負圧室、７……透孔、８……大
気圧室、９……大気導入路、１０……スプリング
、１１……固定ベンチユリ、１２……浮子室、１
３……主燃料ジエツト、１４……ブリードチユー
ブ、１５……パワノズル、１６……ダイアフラム
、２６……負圧取入口、２７……負圧通路、２８
，２９……ブリードエアジエツト。
Figure 1 is a sectional view of an embodiment of the variable bench lily carburetor of the present invention, and Figure 2 shows the relationship between the intake negative pressure acting on the negative pressure intake port to the atmospheric pressure chamber and the opening degree of the butterfly throttle valve. Invented variable bench lily vaporizer and JP-A-56-5
3 is a cross-sectional view of a conventional configuration of a variable bench lily carburetor having a fixed bench lily; FIG.
The figure shows an example of the configuration of a variable bench lily carburetor that improves acceleration by introducing air into the negative pressure chamber during acceleration. Figure 5 shows the connection between the butterfly-shaped throttle valve and sliding valve of the variable bench lily carburetor during acceleration. A diagram showing the time course of negative pressure that occurs,
FIG. 6 shows an example of a conventional configuration of a variable bench lily carburetor that introduces negative intake pressure into an atmospheric pressure chamber in order to promote atomization of fuel when the opening degree of the butterfly throttle valve is small. Explanation of symbols: 1...Casing, 2...Main intake passage,
3...Butterfly throttle valve, 4...Sliding valve, 5...Variable bench lily, 6...Negative pressure chamber, 7...Through hole, 8...Atmospheric pressure chamber, 9...Atmospheric introduction path, 10... ... Spring, 11 ... Fixed bench lily, 12 ... Float chamber, 1
3... Main fuel jet, 14... Bleed tube, 15... Power nozzle, 16... Diaphragm, 26... Negative pressure intake, 27... Negative pressure passage, 28
, 29...Bleed air jet.
Claims (1)
側に、前記主吸気通路２と交叉、進退動して可変
ベンチユリ５を構成し、スプリング１０によつて
閉方に付勢されている摺動弁４が配置され、前記
可変ベンチユリ５に発生する吸気負圧が導入され
る負圧室６と、大気に導通する大気圧室８との差
圧が、前記摺動弁４に開方向に作用する可変ベン
チユリ気化器であつて、前記可変ベンチユリ５に
低負荷領域における混合気の空燃比を制御する固
定ベンチユリ１１をそなえているものにおいて、
前記蝶形絞り弁３の全閉時の前記蝶形絞り弁３の
最上流側周縁部の上流側の前記主吸気通路２内壁
面に、前記大気圧室８に導通する負圧取入口２６
が開口し、前記蝶形絞り弁３が開弁する過程で前
記負圧取入口２６が前記蝶形絞り弁３の周縁より
も下流側に位置して吸気負圧を前記大気圧室８に
導入することによつて、前記摺動弁４の早期開弁
を抑制し、前記摺動弁４の早期開弁によつて、前
記固定ベンチユリ１１によつて制御される低負荷
領域の混合気の空燃比がそこなわれることを防止
したことを特徴とする可変ベンチユリ気化器。 A variable bench lily 5 is provided on the upstream side of the butterfly-shaped throttle valve 3 disposed in the main intake passage 2, intersects with the main intake passage 2, moves forward and backward, and is biased toward closing by a spring 10. A differential pressure between a negative pressure chamber 6 into which the negative pressure generated in the variable bench lily 5 is introduced and an atmospheric pressure chamber 8 which is in communication with the atmosphere causes the sliding valve 4 to open in the opening direction. In the variable bench lily carburetor which acts on the variable bench lily 5, the variable bench lily 5 is provided with a fixed bench lily 11 that controls the air-fuel ratio of the air-fuel mixture in a low load region,
A negative pressure intake port 26 that communicates with the atmospheric pressure chamber 8 is provided on the inner wall surface of the main intake passage 2 on the upstream side of the most upstream peripheral edge of the butterfly throttle valve 3 when the butterfly throttle valve 3 is fully closed.
opens, and in the process of the butterfly-shaped throttle valve 3 opening, the negative pressure intake port 26 is located downstream of the periphery of the butterfly-shaped throttle valve 3 and introduces intake negative pressure into the atmospheric pressure chamber 8. By doing so, the early opening of the sliding valve 4 is suppressed, and the early opening of the sliding valve 4 reduces the air-fuel mixture in the low load region controlled by the fixed bench lily 11. A variable bench lily carburetor characterized in that the fuel ratio is prevented from being impaired.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987183796U JPH0622138Y2 (en) | 1987-12-03 | 1987-12-03 | Variable venturi vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987183796U JPH0622138Y2 (en) | 1987-12-03 | 1987-12-03 | Variable venturi vaporizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0188052U true JPH0188052U (en) | 1989-06-09 |
| JPH0622138Y2 JPH0622138Y2 (en) | 1994-06-08 |
Family
ID=31475203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987183796U Expired - Lifetime JPH0622138Y2 (en) | 1987-12-03 | 1987-12-03 | Variable venturi vaporizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622138Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376235A (en) * | 1976-12-18 | 1978-07-06 | Yamaha Motor Co Ltd | Fuel measurement system variable venturi type carburetor |
| JPS6192754U (en) * | 1984-11-24 | 1986-06-16 |
-
1987
- 1987-12-03 JP JP1987183796U patent/JPH0622138Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5376235A (en) * | 1976-12-18 | 1978-07-06 | Yamaha Motor Co Ltd | Fuel measurement system variable venturi type carburetor |
| JPS6192754U (en) * | 1984-11-24 | 1986-06-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622138Y2 (en) | 1994-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0238061Y2 (en) | ||
| JPH0622138Y2 (en) | Variable venturi vaporizer | |
| JPH0238062Y2 (en) | ||
| GB1457503A (en) | Carburetters for internal combustion engines | |
| JPH0238059Y2 (en) | ||
| JPH0141886Y2 (en) | ||
| JPH0373647U (en) | ||
| JPS6434455U (en) | ||
| JPH0515912B2 (en) | ||
| JPH01174556U (en) | ||
| JPS6375553U (en) | ||
| JPS62158149U (en) | ||
| JPS6451754U (en) | ||
| JPS6184161U (en) | ||
| JPS62108556U (en) | ||
| JPH0432243U (en) | ||
| JPS61204951U (en) | ||
| JPS6451755U (en) | ||
| JPS6257761U (en) | ||
| JPS6411349U (en) | ||
| JPS6092752U (en) | Variable bench lily type vaporizer | |
| JPH03106153U (en) | ||
| JPS6191059U (en) | ||
| JPS6421255U (en) | ||
| JPS6245367U (en) |