JPH0379545B2 - - Google Patents
Info
- Publication number
- JPH0379545B2 JPH0379545B2 JP58174253A JP17425383A JPH0379545B2 JP H0379545 B2 JPH0379545 B2 JP H0379545B2 JP 58174253 A JP58174253 A JP 58174253A JP 17425383 A JP17425383 A JP 17425383A JP H0379545 B2 JPH0379545 B2 JP H0379545B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- air separation
- fuel oil
- fuel
- separation cylinder
- 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.)
- Expired - Lifetime
Links
- 239000003921 oil Substances 0.000 claims description 64
- 239000000295 fuel oil Substances 0.000 claims description 50
- 238000000926 separation method Methods 0.000 claims description 35
- 239000000446 fuel Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/16—Other apparatus for heating fuel
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は船舶用デイーゼル機関における燃料油
供給装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fuel oil supply system for a marine diesel engine.
（従来の技術）
従来の船舶用主機関粗悪油燃料油系統は、第１
図の様になつており、燃料油の流れは、燃料油常
用タンク１より流量計２を通り主機関６で消費さ
れる燃料油の量だけ空気分離筒３に重力で送油さ
れる。空気分離筒３内の燃料油は燃料ブースタポ
ンプ４により加圧移送され、油加熱器５により一
定温度に加熱された後、一部分は主機関６で燃焼
され、残りは圧力調整弁７を経由して空気分離筒
３に戻される。なお、１１はこし器である。(Prior art) The conventional main engine inferior fuel oil system for ships is
As shown in the figure, fuel oil flows from a fuel oil regular tank 1 through a flow meter 2 and is fed by gravity to an air separation cylinder 3 in an amount equal to the amount of fuel oil consumed by the main engine 6. The fuel oil in the air separation cylinder 3 is transferred under pressure by a fuel booster pump 4 and heated to a constant temperature by an oil heater 5. A portion of the fuel oil is combusted by the main engine 6, and the rest is transferred via a pressure regulating valve 7. and returned to the air separation tube 3. In addition, 11 is a strainer.
燃料ブースタポンプ４の容量は機関により異る
が、主機関最大出力時の消費量の2.5〜3.5倍程度
の容量となつている。また、油加熱器５は機関入
口において主機関６で燃焼し得る粘度となるよう
一定の温度制御が行われている場合が殆んどで、
粘度の高い粗悪油になる程高い温度設定となる。 The capacity of the fuel booster pump 4 varies depending on the engine, but is approximately 2.5 to 3.5 times the consumption amount at maximum output of the main engine. Furthermore, in most cases, the oil heater 5 is controlled at a constant temperature at the engine inlet so that it has a viscosity that can be burned in the main engine 6.
The higher the temperature is set, the higher the viscosity and inferior quality of the oil.
（発明が解決しようとする課題） 前述の従来技術には次のような問題点がある。(Problem to be solved by the invention) The above-mentioned conventional technology has the following problems.
使用油の種類、各機器の配置、配管の方法、配
管寸法等によつても異るが、一般に空気分離筒３
内の油温が高くなると、空気分離筒の空気抜管８
から油を吹き出したり、また燃料ブースタポンプ
４でキヤビテーシヨンが発生し、主機関６に燃料
が送り込まれなくなる等の惧れがある。特に、長
期減速運転中にこの現象が起りやすい。 Although it varies depending on the type of oil used, arrangement of each equipment, piping method, piping dimensions, etc., generally air separation tube 3
When the oil temperature inside becomes high, the air vent pipe 8 of the air separation cylinder
There is a risk that oil may be blown out from the main engine 6, cavitation may occur in the fuel booster pump 4, and fuel may not be fed to the main engine 6. This phenomenon is particularly likely to occur during long-term deceleration operation.
それは低速運転になると、主機関６の燃料消費
量が少くなる故圧力調整弁７を通つて空気分離筒
３に戻される油量が増えると、空気分離筒３内温
度は上昇するためと考えられる。なお、油は3500
秒R.W.No.1at38℃程度のものでは、燃料油常用タ
ンク内の油温は約80〜95℃、圧力調整弁７の付近
で約135〜140℃の高温となる。これは主機負荷が
下ると、圧力調整弁７を通して空気分離筒３に戻
る油量が増え、反対に燃料油常用タンク１からの
油量が減少するためである。 This is thought to be because when operating at low speeds, the fuel consumption of the main engine 6 decreases, and as the amount of oil returned to the air separation cylinder 3 through the pressure regulating valve 7 increases, the temperature inside the air separation cylinder 3 rises. . In addition, oil is 3500
In a second RW No. 1 at 38°C, the oil temperature in the fuel oil regular tank is about 80 to 95°C, and the temperature near the pressure regulating valve 7 is about 135 to 140°C. This is because when the load on the main engine decreases, the amount of oil that returns to the air separation cylinder 3 through the pressure regulating valve 7 increases, and conversely, the amount of oil from the fuel oil regular tank 1 decreases.
本発明は、低負荷時においても空気分離筒内の
油温上昇を最低に押え、同筒内の油の沸騰を防止
すると共に、同筒空気抜からの油の吹出しや燃料
ブースタポンプでのキヤビテーシヨン発生を防止
できる燃料油供給装置を提供することを目的とす
るものである。 The present invention suppresses the rise in oil temperature in the air separation cylinder to the minimum even under low load conditions, prevents the oil in the cylinder from boiling, and prevents oil from blowing out from the cylinder air vent or cavitation in the fuel booster pump. The object of the present invention is to provide a fuel oil supply device that can prevent the occurrence of such problems.
（課題を解決するための手段）
燃料油を燃料油常用タンクより空気分離筒へ導
入し、同空気分離筒出口側に設けられた燃料油ブ
ースタポンプにより上記燃料油を油加熱器を経て
機関に供給するとともに上記空気分離筒へ戻すデ
イーゼル機関の粗悪燃料油供給装置において、上
記燃料油ブースタポンプと上記油加熱器とを接続
する油路の途中と上記空気分離筒との間に戻し油
路を設け、また同戻し油路中に同油路の開度を調
整する油量調整弁を設ける。(Means for solving the problem) Fuel oil is introduced into the air separation cylinder from the fuel oil regular tank, and the fuel oil is supplied to the engine via the oil heater using the fuel oil booster pump installed at the outlet side of the air separation cylinder. In the inferior fuel oil supply system for a diesel engine that supplies and returns the oil to the air separation cylinder, a return oil passage is provided between the oil passage connecting the fuel oil booster pump and the oil heater and the air separation cylinder. In addition, an oil amount adjustment valve is provided in the return oil passage to adjust the opening degree of the oil passage.
（作用）
従来は主機関の部分負荷運転において、必要以
上の燃料油量を油加熱器を通して加熱して空気分
離器に戻していたが、本発明によると、油加熱器
の手前で不必要分を加熱することなく空気分離筒
に戻すことになる。従つて空気分離筒内の油温を
最低に押えることができる。(Function) Conventionally, during partial load operation of the main engine, an excess amount of fuel oil was heated through an oil heater and returned to the air separator, but according to the present invention, unnecessary fuel oil is heated before the oil heater. is returned to the air separation tube without being heated. Therefore, the oil temperature in the air separation cylinder can be kept to a minimum.
（実施例） 本発明の実施例を第２図について説明する。(Example) An embodiment of the invention will be described with reference to FIG.
図において、符号１より８まで及び１１は従来
例を示す第１図のものと同一部材である。 In the figure, numerals 1 to 8 and 11 are the same members as those in FIG. 1 showing a conventional example.
燃料油ブースタポンプ４の出口と油加熱器５の
間の油路の途中点ａと空気分離筒３との間に戻し
油路９を設けている。 A return oil passage 9 is provided between an intermediate point a of the oil passage between the outlet of the fuel oil booster pump 4 and the oil heater 5 and the air separation cylinder 3.
油路９には同油路９の開度を調整する油量調整
弁１０を設けている。 The oil passage 9 is provided with an oil amount adjustment valve 10 for adjusting the opening degree of the oil passage 9.
次に本装置の作用について述べる。 Next, the function of this device will be described.
主機関６の負荷が低下し、且つ燃料油温度が所
定温度まで上昇すると流量調整弁１０が開いてブ
ースタポンプ４から送出された低温燃料のうち主
機関６の運転に必要な量が油加熱器５に送られ、
残りの低温燃料は戻し油路９を通つて空気分離筒
３内に戻される。 When the load on the main engine 6 decreases and the fuel oil temperature rises to a predetermined temperature, the flow rate regulating valve 10 opens and the amount of low-temperature fuel sent out from the booster pump 4 necessary for operating the main engine 6 is transferred to the oil heater. Sent to 5,
The remaining low-temperature fuel is returned to the air separation cylinder 3 through the return oil passage 9.
従つて、空気分離筒３内の燃料油は適切な最低
温度に保持される。 Therefore, the fuel oil in the air separation tube 3 is maintained at an appropriate minimum temperature.
第３図は本発明による他の実施例の装置を示す
説明図である。 FIG. 3 is an explanatory diagram showing another embodiment of the apparatus according to the present invention.
上記弁１０の開度調整を下記の手段で自動化さ
せることにより省力化が実現できる。即ち、
(1) 図中の符号ｂで示すように、主機関出口の圧
力調整弁７の開度を検出することにより、主機
関負荷が変動し過剰な燃料油が油加熱器５側に
供給されるようになつたことを検知し、その過
剰燃料油を油量調整弁１０から空気分離筒３へ
自動的に流す。 Labor saving can be achieved by automating the opening degree adjustment of the valve 10 using the following means. (1) As shown by symbol b in the figure, by detecting the opening degree of the pressure regulating valve 7 at the main engine outlet, the main engine load fluctuates and excess fuel oil is supplied to the oil heater 5 side. It is detected that the excess fuel oil has started to flow, and the excess fuel oil is automatically flowed from the oil amount adjusting valve 10 to the air separation cylinder 3.
(2) 図中の符号ｃで示すように、燃料油ブースタ
ポンプ４の出口圧力を検知することにより、油
加熱器６側に過剰な燃料油が供給される様にな
つた事を検知し、この過剰燃料油を油量調整弁
１０から空気分離筒３へ自動的に流す。(2) As shown by the symbol c in the figure, by detecting the outlet pressure of the fuel oil booster pump 4, it is detected that excessive fuel oil is being supplied to the oil heater 6 side, This excess fuel oil is automatically flowed from the oil amount regulating valve 10 to the air separation cylinder 3.
(3) 図中の符号ｄに示すように、主機関出力（負
荷指針または馬力または回転数等）を検出する
ことにより油加熱器６側に過剰な燃料油が供給
されるようになつたことを検知し、この過剰燃
料油を油量調整弁１０から空気分離筒３へ自動
的に流す。(3) As shown by code d in the diagram, excessive fuel oil is now supplied to the oil heater 6 side by detecting the main engine output (load guideline, horsepower, rotation speed, etc.) is detected, and this excess fuel oil is automatically flowed from the oil amount adjustment valve 10 to the air separation cylinder 3.
（発明の効果）
本発明は、燃料油を燃料油常用タンクより空気
分離筒へ導入し、同空気分離筒出口側に設けられ
た燃料油ブースタポンプにより上記燃料油を油加
熱器を経て機関に供給するとともに上記空気分離
筒へ戻すように構成されたデイーゼル機関の粗悪
燃料油供給装置において、上記燃料油ブースタポ
ンプと上記油加熱器とを接続する油路の途中と上
記空気分離筒との間に設けられた戻し油路、同戻
し油路中に設けられた同油路の開度を調整する油
量調整弁を備え、前記ブースタポンプから送出さ
れた燃料の一部を前記機関及び油加熱器をバイパ
スして前記戻し油路を経て前記空気分離筒に直接
戻すように構成したことにより、次の効果を有す
る。(Effects of the Invention) The present invention introduces fuel oil from a fuel oil regular tank into an air separation cylinder, and uses a fuel oil booster pump installed at the outlet side of the air separation cylinder to supply the fuel oil to an engine via an oil heater. In a diesel engine inferior fuel oil supply device configured to supply and return to the air separation cylinder, the fuel oil is supplied between the middle of the oil path connecting the fuel oil booster pump and the oil heater and the air separation cylinder. a return oil passage provided in the return oil passage, and an oil amount adjustment valve for adjusting the opening degree of the oil passage provided in the return oil passage, and a part of the fuel sent from the booster pump is supplied to the engine and oil heating. By configuring the oil to be returned directly to the air separation cylinder via the return oil path by bypassing the oil return passage, the following effects can be obtained.
主機関負荷を下げて運航する時等において、必
要以上に燃料油を加熱することを防止し、空気分
離筒３内の燃料油の温度を下げ得ることができ
る。従つて、空気分離筒の空気抜管８からの油の
吹上げや燃料油ブースターポンプ４内でのキヤビ
テーシヨンの発生を防止することができる。 When operating with a reduced load on the main engine, the fuel oil can be prevented from being heated more than necessary and the temperature of the fuel oil in the air separation cylinder 3 can be lowered. Therefore, it is possible to prevent oil from blowing up from the air vent pipe 8 of the air separation cylinder and cavitation within the fuel oil booster pump 4.
第１図は従来の燃料供給装置を示す説明図、第
２図は本発明による１実施例の装置を示す説明
図、第３図は本発明による他の実施例の装置を示
す説明図である。
１……燃料油常用タンク、３……空気分離筒、
４……燃料油ブースタポンプ、５……油加熱器、
６……主機関、７……圧力調整弁、９……戻し油
路、１０……油量調整弁。
FIG. 1 is an explanatory diagram showing a conventional fuel supply device, FIG. 2 is an explanatory diagram showing one embodiment of the device according to the present invention, and FIG. 3 is an explanatory diagram showing another embodiment of the device according to the present invention. . 1...Fuel oil regular tank, 3...Air separation cylinder,
4... Fuel oil booster pump, 5... Oil heater,
6... Main engine, 7... Pressure regulating valve, 9... Return oil path, 10... Oil amount regulating valve.
Claims (1)
導入し、同空気分離筒出口側に設けられた燃料油
ブースタポンプにより上記燃料油を油加熱器を経
て機関に供給するとともに上記空気分離筒へ戻す
ように構成されたデイーゼル機関の粗悪燃料油供
給装置において、上記燃料油ブースタポンプと上
記油加熱器とを接続する油路の途中と上記空気分
離筒との間に設けられた戻し油路、同戻し油路中
に設けられ同油路の開度を調整する油量調整弁を
備え、前記ブースタポンプから送出された燃料の
一部を前記機関及び油加熱器をバイパスして前記
戻し油路を経て前記空気分離筒に直接戻すように
構成したことを特徴とする燃料油供給装置。1 Fuel oil is introduced into the air separation cylinder from the fuel oil regular tank, and the fuel oil is supplied to the engine via the oil heater by the fuel oil booster pump installed on the outlet side of the air separation cylinder, and also to the air separation cylinder. In the inferior fuel oil supply device for a diesel engine configured to return the fuel oil, a return oil path provided between the middle of the oil path connecting the fuel oil booster pump and the oil heater and the air separation tube; An oil amount adjustment valve is provided in the return oil passage and adjusts the opening degree of the oil passage, and a part of the fuel sent from the booster pump is bypassed through the engine and the oil heater to bypass the oil return passage. A fuel oil supply device characterized in that it is configured to directly return the fuel oil to the air separation cylinder through the air separation cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58174253A JPS6067757A (en) | 1983-09-22 | 1983-09-22 | Fuel oil feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58174253A JPS6067757A (en) | 1983-09-22 | 1983-09-22 | Fuel oil feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6067757A JPS6067757A (en) | 1985-04-18 |
| JPH0379545B2 true JPH0379545B2 (en) | 1991-12-19 |
Family
ID=15975391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58174253A Granted JPS6067757A (en) | 1983-09-22 | 1983-09-22 | Fuel oil feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6067757A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6081460A (en) * | 1983-10-12 | 1985-05-09 | Koyo Dotsugu Kk | Device for separating evaporable component of fuel oil for internal-combustion engine |
| JP6023456B2 (en) * | 2012-04-12 | 2016-11-09 | 富士重工業株式会社 | Air lock prevention system for aircraft fuel pump and air lock prevention method for aircraft fuel pump |
| CN108590907B (en) * | 2018-03-12 | 2020-06-02 | 济南凯瑞特铸造有限公司 | Diesel engine fuel constant temperature purifies management system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214804A (en) * | 1975-07-28 | 1977-02-04 | Hitachi Ltd | Commutator manufacturing method |
-
1983
- 1983-09-22 JP JP58174253A patent/JPS6067757A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214804A (en) * | 1975-07-28 | 1977-02-04 | Hitachi Ltd | Commutator manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6067757A (en) | 1985-04-18 |
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