JP4479407B2 - Oil level adjustment device for stationary engine - Google Patents

Oil level adjustment device for stationary engine Download PDF

Info

Publication number
JP4479407B2
JP4479407B2 JP2004227423A JP2004227423A JP4479407B2 JP 4479407 B2 JP4479407 B2 JP 4479407B2 JP 2004227423 A JP2004227423 A JP 2004227423A JP 2004227423 A JP2004227423 A JP 2004227423A JP 4479407 B2 JP4479407 B2 JP 4479407B2
Authority
JP
Japan
Prior art keywords
oil
level
pan
temperature
control valve
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
Application number
JP2004227423A
Other languages
Japanese (ja)
Other versions
JP2006046153A (en
Inventor
利一 竹内
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.)
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Technologies Ltd
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 Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP2004227423A priority Critical patent/JP4479407B2/en
Publication of JP2006046153A publication Critical patent/JP2006046153A/en
Application granted granted Critical
Publication of JP4479407B2 publication Critical patent/JP4479407B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Description

本発明は定置用エンジンのオイルレベル調整装置に係わり、特にオイルの粘度が高くてもオイルレベル変動に速やかに追従してオイルレベルを一定に保つことができる定置用エンジンのオイルレベル調整装置に関するものである。   The present invention relates to an oil level adjusting device for a stationary engine, and more particularly to an oil level adjusting device for a stationary engine that can quickly keep up with oil level fluctuations and maintain a constant oil level even when the oil viscosity is high. It is.

従来の定置用エンジンのオイルレベル調整装置は、下記特許文献１に示されるように、定置用エンジンにおけるオイルパンとは別にオイルタンクを設けて、オイルパンとオイルタンクを配管で接続し、配管の途中には制御弁を設けて、オイルパンにおけるオイルレベルを検出するとともにオイルタンクにおけるオイル温度も検出し、オイルレベルが下がりオイルの供給が必要になったら、オイルタンクのオイル温度に基づいて、制御弁の作動時間を調整するようにしていた。   As shown in Patent Document 1 below, a conventional stationary engine oil level adjusting device is provided with an oil tank separately from an oil pan in a stationary engine, and the oil pan and the oil tank are connected by piping. A control valve is provided in the middle to detect the oil level in the oil pan and the oil temperature in the oil tank. When the oil level drops and oil supply is required, control is performed based on the oil temperature in the oil tank. The operation time of the valve was adjusted.

この作動時間の調整は、オイル温度が低い場合は粘度が増して、流速が低下し、オイル供給が遅れるので、制御弁の開時間を粘度に合せて調整するものである。   The adjustment of the operation time is to adjust the opening time of the control valve in accordance with the viscosity because the viscosity increases, the flow rate decreases, and the oil supply is delayed when the oil temperature is low.

特開平５−２４００１８号公報JP-A-5-240018

上記従来技術の定置用エンジンのオイルレベル調整装置では、オイルタンクとオイルパンとの液面を一致させるには、オイル温度に応じて制御弁の開時間を制御し自然流下でオイルを移動させるだけであるため、低温オイルのように粘度が高い場合、液面が一致するまでに相当時間を要するだけでなく、エンジンオイルの急速過熱や急速冷却のような過渡試験を行おうとする場合には、オイルレベルの調整が遅く、上記のような試験を行うことができなかった。   In the oil level adjusting device of the stationary engine of the above prior art, in order to make the oil level of the oil tank and the oil pan coincide with each other, the open time of the control valve is controlled according to the oil temperature and the oil is moved under natural flow. Therefore, when the viscosity is high like low temperature oil, not only does it take a considerable amount of time to match the liquid level, but also when performing transient tests such as rapid overheating and rapid cooling of engine oil, Adjustment of the oil level was slow and the above test could not be performed.

それゆえ、本発明の目的は、オイル粘度の高低に係わらず、オイルレベル変動に速やかに追従してオイルレベルを一定に保つことができる定置用エンジンのオイルレベル調整装置を提供することにある。   Therefore, an object of the present invention is to provide an oil level adjusting device for a stationary engine that can quickly follow oil level fluctuations and keep the oil level constant regardless of the oil viscosity.

また、本発明の他の目的は、オイル粘度を所望値に設定変更しながら、オイルレベル変動に速やかに追従してオイルレベルを一定に保つ急速過熱や急速冷却などの過渡試験を遂行することができる定置用エンジンのオイルレベル調整装置を提供することにある。   Another object of the present invention is to perform transient tests such as rapid overheating and rapid cooling that keep the oil level constant by quickly following the oil level fluctuation while changing the oil viscosity to a desired value. An object is to provide an oil level adjusting device for a stationary engine.

上記目的を達成する本発明の特徴とするところは、定置用エンジンのオイルパンとオイルタンクとを制御弁を備えた配管で接続し、オイルパンにおけるオイルレベルに応じて制御弁を開閉させ、オイルパンにおけるオイルレベルを所望値に保つ定置用エンジンのオイルレベル調整装置において、オイルパンとオイルタンクにはそれぞれポンプを備えたオイル循環配管系を設け、両オイル循環系は制御弁を備えた配管を介して接続し、オイルパンのオイルレベルを検出する液面センサを連通配管を介してオイルパンに接続し、連通配管にはオイル保温手段を設け、前記オイルパン、オイルタンクおよび液面センサにはそれぞれ温度センサが設けられ、前記各温度センサの検出結果に基いて、前記オイルパン、オイルタンクおよび連通配管の各オイルの温度を制御すると共に、液面センサの出力信号によるオイルパンにおけるオイルレベルに基づいてオイルパンにおけるオイルレベルを所望な値に維持するように制御弁を制御する制御手段を設けたことにある。
A feature of the present invention that achieves the above object is that an oil pan and an oil tank of a stationary engine are connected by a pipe having a control valve, and the control valve is opened and closed according to the oil level in the oil pan. In a stationary engine oil level adjusting device that keeps the oil level in the pan at a desired value, the oil pan and the oil tank are each provided with an oil circulation piping system equipped with a pump, and both oil circulation systems are equipped with piping equipped with a control valve. A fluid level sensor that detects the oil level of the oil pan is connected to the oil pan through a communication pipe, and the oil insulation means is provided in the communication pipe, and the oil pan, oil tank, and liquid level sensor A temperature sensor is provided for each of the oil pan, the oil tank, and the communication pipe based on the detection result of each temperature sensor. It controls the temperature Le is to provided a control means for controlling the control valve so as to maintain the oil level in the oil pan to the desired value on the basis of the oil level in the oil pan according to an output signal of the liquid level sensor .

本発明においては、オイルパンとオイルタンクはともにオイル循環配管系に位置してオイルがポンプで循環しているので、制御弁が開放されるとポンプの吐出力で相手方のオイル循環配管系に急速に供給される。   In the present invention, the oil pan and the oil tank are both located in the oil circulation piping system and the oil is circulated by the pump. Therefore, when the control valve is opened, the pump's discharge force causes the oil circulation piping system to rapidly To be supplied.

また、オイルタンクおよびオイルタンク側ではそれぞれオイル温度調整装置でオイルは独自に所望の温度に制御できる。   Moreover, oil can be independently controlled to a desired temperature by an oil temperature adjusting device on the oil tank and the oil tank side.

以下、本発明の技術的手段を具体化した実施例に基づいて説明する。   Hereinafter, the technical means of the present invention will be described based on specific embodiments.

図１において、１０は定置用エンジン、１１は定置用エンジン１０の下部に設けられたオイルパン、１２はオイルパン１１におけるオイルの最高レベルＨと中レベルＭと最低レベルＬを検出する液面センサである。液面センサ１２は、液面変動を瞬時に検出するために、定置用エンジン１０の直近に設置するのが望ましい。   In FIG. 1, 10 is a stationary engine, 11 is an oil pan provided at the lower part of the stationary engine 10, and 12 is a liquid level sensor that detects the maximum level H, middle level M, and minimum level L of oil in the oil pan 11. It is. The liquid level sensor 12 is desirably installed in the immediate vicinity of the stationary engine 10 in order to detect the liquid level fluctuation instantaneously.

１３，１４はオイルパン１１と液面センサ１２を連通する配管、１５は温度センサ１６で検出する液面センサ１２でのオイル温度に基づいて連通配管１３を暖め液面センサ１２での液面検出を容易にする保温手段（バンドヒータ）である。連通配管１３はオイル用であり、連通配管１４は空気用である。   Reference numerals 13 and 14 are pipes that connect the oil pan 11 and the liquid level sensor 12, and reference numeral 15 is a warming of the communication pipe 13 based on the oil temperature at the liquid level sensor 12 detected by the temperature sensor 16, and the liquid level detection by the liquid level sensor 12. It is a heat retaining means (band heater) that facilitates. The communication pipe 13 is for oil, and the communication pipe 14 is for air.

１７はオイルパン１１に設置した温度センサ、１８は定置用エンジン１０の運転状態を検知する回転センサで、各センサ１２，１７，１８の検出結果は制御装置２０に送られる。温度センサ１６の検出結果も制御装置２０に送り、バンドヒータ１５への供給電力を制御するようにしてもよい。   Reference numeral 17 denotes a temperature sensor installed in the oil pan 11, and 18 denotes a rotation sensor that detects the operating state of the stationary engine 10. The detection results of the sensors 12, 17, and 18 are sent to the control device 20. The detection result of the temperature sensor 16 may also be sent to the control device 20 to control the power supplied to the band heater 15.

２１はオイルパン１１におけるオイル循環配管系で、この配管系２１にはポンプ２２，オイル温度調整配管２３，オイル温度調整装置２４が設けられており、オイルはポンプ２２でオイルパン１１から汲み上げられてから、オイル温度調整配管２３−オイル温度調整装置２４−オイル温度調整配管２３を経て、オイルパン１１に戻る。オイル温度調整装置２４では制御装置２０からの指示で、オイルの温度を任意の所望温度に変更（設定）できる。   An oil circulation piping system 21 in the oil pan 11 is provided with a pump 22, an oil temperature adjusting piping 23, and an oil temperature adjusting device 24, and oil is pumped up from the oil pan 11 by the pump 22. Then, it returns to the oil pan 11 through the oil temperature adjustment pipe 23 -oil temperature adjustment device 24 -oil temperature adjustment pipe 23. The oil temperature adjusting device 24 can change (set) the oil temperature to an arbitrary desired temperature by an instruction from the control device 20.

３０はオイルタンク、３１はオイルタンク３０におけるオイル循環配管系で、この配管系３１にはポンプ３２とその前後に制御弁３３，３４があり、制御弁３３とポンプ３２の間には逆止弁３５を設けてある。オイルタンク３０には温度センサ３６があり、図示していないオイル温度調整装置で、オイルタンク３０内のオイル温度を一定に保つようにしている。温度センサ３６の検出結果も制御装置２０に送り、図示していないオイル温度調整装置を制御するようにしてもよい。   30 is an oil tank, 31 is an oil circulation piping system in the oil tank 30, and this piping system 31 has a pump 32 and control valves 33, 34 before and after the pump 32, and a check valve between the control valve 33 and the pump 32. 35 is provided. The oil tank 30 has a temperature sensor 36, and an oil temperature adjusting device (not shown) keeps the oil temperature in the oil tank 30 constant. The detection result of the temperature sensor 36 may also be sent to the control device 20 to control an oil temperature adjusting device (not shown).

４０はオイルパン１１におけるオイル循環配管系２１とオイルタンク３０におけるオイル循環配管系３１を接続するオイル供給配管で、オイルタンク３０からオイルパン１１にオイルを供給する場合はポンプ３２の吐出側から制御弁４１，逆止弁４２を介してオイルパン１１におけるオイル循環配管系２１におけるオイル温度調整装置２４の入力側に流れ、オイルパン１１からオイルタンク３０にオイルを戻す場合はオイル温度調整装置２４の入力側から制御弁４３を介してポンプ３２の吸入側に流れるようにしてある。   An oil supply pipe 40 connects the oil circulation piping system 21 in the oil pan 11 and the oil circulation piping system 31 in the oil tank 30. When oil is supplied from the oil tank 30 to the oil pan 11, control is performed from the discharge side of the pump 32. When the oil flows from the oil pan 11 to the oil tank 30 through the valve 41 and the check valve 42 to the input side of the oil temperature adjusting device 24 in the oil circulation piping system 21 in the oil pan 11, the oil temperature adjusting device 24 It flows from the input side to the suction side of the pump 32 via the control valve 43.

なお、各制御弁３３，３４，４１，４３は電磁弁など制御装置２０からの指令で開閉制御をすることができるものを用いている。
次に、動作について説明する。 Each control valve 33, 34, 41, 43 is an electromagnetic valve or the like that can be controlled to open and close by a command from the control device 20.
Next, the operation will be described.

定置用エンジン１０の運転開始に合せ、制御装置２０はポンプ２２と温度調節装置２４を制御して所望の送液量でオイルを循環させ、温度センサ１７の検出結果に従って、所望のオイル温度に維持する。   In accordance with the start of operation of the stationary engine 10, the control device 20 controls the pump 22 and the temperature adjusting device 24 to circulate oil at a desired liquid feeding amount, and maintains the desired oil temperature according to the detection result of the temperature sensor 17. To do.

また、制御装置２０は回転センサ１８の出力信号により定置用エンジン１０が運転状態にあることを判断し、オイルポンプ３２を運転し、制御弁３３，３４を開、制御弁４１，４３を閉にして、オイルタンク３０内のオイルをオイルタンク３０におけるオイル循環配管系３１で循環させる。制御装置２０は、液面センサ１２の出力信号によりオイルパン１１内のオイル保有量を検知・確認している。   Further, the control device 20 determines that the stationary engine 10 is in an operating state from the output signal of the rotation sensor 18, operates the oil pump 32, opens the control valves 33 and 34, and closes the control valves 41 and 43. Then, the oil in the oil tank 30 is circulated through the oil circulation piping system 31 in the oil tank 30. The control device 20 detects and confirms the amount of oil retained in the oil pan 11 based on the output signal of the liquid level sensor 12.

オイルパン１１内のオイル保有量が最低レベルＬ以下になると、制御装置２０は、制御弁３３，４１を開、制御弁３４，４３を閉にして、ポンプ３２の吐出圧を利用してオイルタンク３０内のオイルをオイル供給配管４０からオイル温度調整装置２４を経てオイルパン１１内に注入する。尚、オイルの注入量は、液面センサ１２で中レベルＭ（オイルパン１１での液面レベルが所望な一定値）が検出されたら、制御弁３４を開、４１を閉に切り替えて注入を停止する。   When the amount of oil retained in the oil pan 11 becomes the minimum level L or less, the control device 20 opens the control valves 33 and 41 and closes the control valves 34 and 43, and uses the discharge pressure of the pump 32 to make an oil tank. The oil in 30 is injected into the oil pan 11 through the oil temperature adjusting device 24 from the oil supply pipe 40. Note that when the medium level M (the desired level of the liquid level in the oil pan 11) is detected by the liquid level sensor 12, the injection amount of the oil is switched by opening the control valve 34 and switching 41 to the closed level. Stop.

また、逆に液面センサ１２の出力信号がオイルパン１１内のオイル保有量が最高レベルＨ以上になることを示すと、制御装置２０は制御弁３３，４１を閉、制御弁４３，３４を開として、オイルパン１１内のオイルをポンプ３２の吸引力・吐出力によりオイル供給配管４０を介してオイルタンク３０に注出する。この場合もオイルの注出量も常時一定となるように、液面センサ１２の中レベルＭが検出されたら制御弁３３を開、４３を閉に切り替えて注出を停止する。   Conversely, when the output signal of the liquid level sensor 12 indicates that the amount of oil retained in the oil pan 11 is equal to or higher than the maximum level H, the control device 20 closes the control valves 33 and 41 and opens the control valves 43 and 34. As opened, the oil in the oil pan 11 is poured into the oil tank 30 via the oil supply pipe 40 by the suction force / discharge force of the pump 32. Also in this case, when the medium level M of the liquid level sensor 12 is detected so that the amount of oil dispensed is always constant, the control valve 33 is opened and 43 is closed to stop the dispensing.

なお、各逆止弁３５，４２は、流れが切り替わるときの流れの方向を規制し、各制御弁の開閉を容易にする。   Each check valve 35, 42 regulates the direction of flow when the flow is switched, and facilitates opening and closing of each control valve.

このように、ポンプ２２，３２でオイルを常時循環させているので、オイルパン１１内のオイルレベル変化を検出したら、直ちに制御弁３３，３４，４１，４３の切り替えでオイルレベルに応じてオイルポンプ３２によりオイルを注入・注出することができる。   As described above, since the oil is constantly circulated by the pumps 22 and 32, when the oil level change in the oil pan 11 is detected, the oil pump is immediately switched according to the oil level by switching the control valves 33, 34, 41 and 43. 32 can inject and dispense oil.

エンジンオイルの急速加熱、急速冷却のように、制御装置２０から出す指令でオイル温度調整装置２４での設定温度を急激に切り替え、オイルの粘性や膨張・収縮の変動に伴い急速にオイルパン１１内のオイルレベルが変動するような過渡試験を行う場合でも、ポンプ２２，３２でオイルを強制的に循環させておき、液面センサ１２の検出結果から制御弁３３，３４，４１，４３の開閉を切り替えるだけで、瞬時にオイルレベルを一定範囲に保つことができる。   As in the case of rapid heating and cooling of engine oil, the set temperature in the oil temperature adjusting device 24 is rapidly switched by a command issued from the control device 20, and the oil pan 11 is rapidly changed in accordance with fluctuations in oil viscosity and expansion / contraction. Even when a transient test in which the oil level fluctuates is performed, the oil is forcibly circulated by the pumps 22 and 32, and the control valves 33, 34, 41, and 43 are opened and closed based on the detection result of the liquid level sensor 12. By simply switching, the oil level can be kept within a certain range instantly.

各制御弁３３，３４，４１，４３を含む配管を襷掛けに形とし、交点位置にポンプ３２を設けて、オイルの供給と戻しにポンプ３２を共用しているが、供給用ポンプと戻し用ポンプに分離し、制御弁の開閉制御を簡単にしても構わない。   A pipe including each control valve 33, 34, 41, 43 is shaped like a hook, and a pump 32 is provided at the intersection, and the pump 32 is shared for oil supply and return. It may be separated into a pump to simplify the control of the control valve.

オイルパン１１に設置してあるポンプ２２はオイルパン１１の外部に設置してあってもよい。   The pump 22 installed in the oil pan 11 may be installed outside the oil pan 11.

オイルパン１１とオイルタンク３０間のオイル移動はポンプ３２の吐出力によるので、オイルタンク３０はオイルパン１１に対し自由な高さ位置に設置できる。   Since the oil movement between the oil pan 11 and the oil tank 30 depends on the discharge force of the pump 32, the oil tank 30 can be installed at a free height position with respect to the oil pan 11.

液面センサ１２やオイルタンク３０の温度制御は制御装置２０から独立した制御装置で実施してもよい。   The temperature control of the liquid level sensor 12 and the oil tank 30 may be performed by a control device independent of the control device 20.

本発明の一実施形態になる定置用エンジンのオイルレベル調整装置の概略図である。It is the schematic of the oil level adjustment apparatus of the stationary engine which becomes one Embodiment of this invention.

符号の説明Explanation of symbols

１０‥定置用エンジン
１１‥オイルパン
１２‥液面センサ
１６，１７，３６‥温度センサ
１８‥回転センサ
２０‥制御装置
２２，３２‥ポンプ
２３‥オイル温度調整配管
２４‥オイル温度調整装置
３０‥オイルタンク
３３，３４，４１，４３‥制御弁
10 ... Stationary engine
11. Oil pan
12. Liquid level sensor
16, 17, 36 .. Temperature sensor
18 ... Rotation sensor
20. Control device
22, 32 ... Pump
23. Oil temperature adjustment piping
24. Oil temperature control device
30 Oil tank
33, 34, 41, 43 ... control valve

Claims (4)

定置用エンジンのオイルパンとオイルタンクとを制御弁を備えた配管で接続し、オイルパンにおけるオイルレベルに応じて制御弁を開閉させ、オイルパンにおけるオイルレベルを所望値に保つ定置用エンジンのオイルレベル調整装置において、
オイルパンとオイルタンクにはそれぞれポンプを備えたオイル循環配管系を設け、両オイル循環系は制御弁を備えた配管を介して接続し、
オイルパンのオイルレベルを検出する液面センサを連通配管を介してオイルパンに接続し、連通配管にはオイル保温手段を設け、
前記オイルパン、オイルタンクおよび液面センサにはそれぞれ温度センサが設けられ、
前記各温度センサの検出結果に基いて、前記オイルパン、オイルタンクおよび連通配管の各オイルの温度を制御すると共に、液面センサの出力信号によるオイルレベルに基づいてオイルパンにおけるオイルレベルを所望な値に維持するように制御弁を制御する制御手段を設けたことを特徴とする定置用エンジンのオイルレベル調整装置。 The stationary engine oil pan and the oil tank are connected by a pipe equipped with a control valve, and the control valve is opened and closed according to the oil level in the oil pan to maintain the oil level in the oil pan at a desired value. In the level adjustment device,
The oil pan and oil tank are each provided with an oil circulation piping system equipped with a pump, and both oil circulation systems are connected via a piping equipped with a control valve,
A liquid level sensor that detects the oil level of the oil pan is connected to the oil pan through a communication pipe, and an oil heat retaining means is provided in the communication pipe,
Each of the oil pan, the oil tank and the liquid level sensor is provided with a temperature sensor,
Based on the detection result of each temperature sensor, the temperature of each oil in the oil pan, the oil tank, and the communication pipe is controlled, and the oil level in the oil pan is set based on the oil level based on the output signal of the liquid level sensor. An oil level adjusting device for a stationary engine, characterized by comprising control means for controlling the control valve so as to maintain the value. 上記請求項１において、両オイル循環系を接続する制御弁を備えた配管はオイルタンクにおけるオイル循環配管系のポンプの吐出側と吸入側にそれぞれ接続してあることを特徴とする定置用エンジンのオイルレベル調整装置。   The stationary engine according to claim 1, wherein the piping provided with the control valve for connecting both the oil circulation systems is connected to the discharge side and the suction side of the pump of the oil circulation piping system in the oil tank, respectively. Oil level adjustment device. 上記請求項２において、両オイル循環系を接続する制御弁を備えた配管はオイルパンにおけるオイル循環系においてはオイル温度調整装置の入口側に接続してあることを特徴とする定置用エンジンのオイルレベル調整装置。   3. The stationary engine oil according to claim 2, wherein the pipe provided with the control valve for connecting both oil circulation systems is connected to the inlet side of the oil temperature adjusting device in the oil circulation system in the oil pan. Level adjustment device. 上記請求項１において、両オイル循環配管系にはそれぞれオイル温度調整装置を設けてあり、各オイル温度調整装置は温度制御手段により各オイル循環配管系でのオイル温度をそれぞれ所望の値に制御するようになされていることを特徴とする定置用エンジンのオイルレベル調整装置。 In the first aspect of the present invention, both oil circulation piping systems are respectively provided with oil temperature adjusting devices, and each oil temperature adjusting device controls the oil temperature in each oil circulation piping system to a desired value by the temperature control means. An oil level adjusting device for a stationary engine, characterized in that
JP2004227423A 2004-08-04 2004-08-04 Oil level adjustment device for stationary engine Expired - Lifetime JP4479407B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004227423A JP4479407B2 (en) 2004-08-04 2004-08-04 Oil level adjustment device for stationary engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004227423A JP4479407B2 (en) 2004-08-04 2004-08-04 Oil level adjustment device for stationary engine

Publications (2)

Publication Number Publication Date
JP2006046153A JP2006046153A (en) 2006-02-16
JP4479407B2 true JP4479407B2 (en) 2010-06-09

Family

ID=36025035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004227423A Expired - Lifetime JP4479407B2 (en) 2004-08-04 2004-08-04 Oil level adjustment device for stationary engine

Country Status (1)

Country Link
JP (1) JP4479407B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3073893B1 (en) * 2017-11-17 2024-07-19 Renault Sas METHOD FOR CONTROLLING A LUBRICATION DEVICE FOR AN INTERNAL COMBUSTION ENGINE
CN115324682A (en) * 2022-08-31 2022-11-11 徐州徐工矿业机械有限公司 Engine oil recycling and regenerating system, control method and mining dump truck

Also Published As

Publication number Publication date
JP2006046153A (en) 2006-02-16

Similar Documents

Publication Publication Date Title
KR100826889B1 (en) Constant temperature liquid circulating device and method of controlling temperature in the device
CA2754683C (en) Hot-water supply system
EP3635298B1 (en) Recirculating fluid heating systems
JP5202261B2 (en) Water heater
KR102449159B1 (en) Boiler for heating and hot water and its control method
JP4947292B2 (en) Fuel temperature control device
JP4479407B2 (en) Oil level adjustment device for stationary engine
JP2018031520A (en) Storage water heater
JP2009052798A (en) Hot water storage water heater with bath pouring function
JP7064694B2 (en) Hot water storage and hot water supply device
KR101007514B1 (en) Heating distributor and heating control method, and the heating water distributor used to control the heating
JP6197452B2 (en) Hot water system
EP2308662A1 (en) Heating unit for heating press plates of vulcanizing press machine and method for heating press plates of vulcanizing press machine
JP3740067B2 (en) Hot water mixing unit
KR102312524B1 (en) Water saving type hot water circulation system
EP3800522B1 (en) Auxiliary apparatus using four-way electronic valve to achieve temperature rise and fall effect on component of machine tool
JP2006183496A (en) Operation method of pump for supplying fluid
KR101047752B1 (en) Valves for Heat Exchange of Fluids
JP6520821B2 (en) Hot water storage system
JP6904815B2 (en) Hot water heater
JP2001065411A (en) Emulsion fuel supply device of diesel engine
KR20180097562A (en) Thermal Exchange And Thermal Stratification System For The Fluid Contained In A Tank And Hot Water Tank Comprising Said System
JP6265002B2 (en) Boiler system
JP5067129B2 (en) Hot water heater
JPH0742957A (en) Hot-water heater

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20060509

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20060823

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070216

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20070222

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070216

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20070820

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090810

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090825

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091022

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100223

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100308

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130326

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4479407

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140326

Year of fee payment: 4

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term