WO2018032641A1 - 一种内燃机、润滑系统及机油集滤器 - Google Patents

一种内燃机、润滑系统及机油集滤器 Download PDF

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WO2018032641A1
WO2018032641A1 PCT/CN2016/106359 CN2016106359W WO2018032641A1 WO 2018032641 A1 WO2018032641 A1 WO 2018032641A1 CN 2016106359 W CN2016106359 W CN 2016106359W WO 2018032641 A1 WO2018032641 A1 WO 2018032641A1
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Prior art keywords
oil
passage
internal combustion
combustion engine
lubricating
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PCT/CN2016/106359
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English (en)
French (fr)
Inventor
申加伟
崔永
崔京朋
李建文
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潍柴动力股份有限公司
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Application filed by 潍柴动力股份有限公司 filed Critical 潍柴动力股份有限公司
Priority to EP16913396.4A priority Critical patent/EP3498992B1/en
Priority to RU2019101796A priority patent/RU2718372C1/ru
Priority to US16/316,833 priority patent/US10876439B2/en
Publication of WO2018032641A1 publication Critical patent/WO2018032641A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/10—Safety devices, e.g. by-passes
    • B01D27/103—Bypass or safety valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/0458—Lubricant filling and draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0292—Sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements
    • F01M2001/1078—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements comprising an oil pick-up tube to oil pump, e.g. strainer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/007—Oil pickup tube to oil pump, e.g. strainer

Definitions

  • the invention relates to the technical field of internal combustion engine production, in particular to an internal combustion engine, a lubrication system and an oil collection filter.
  • the internal combustion engine needs lubricating oil to lubricate each movement pair during operation to avoid dry friction of each movement pair, thereby ensuring reliable operation of the internal combustion engine.
  • the oil sump, the lubricating oil passage, the oil pump and the oil collecting filter arranged in front of the oil pump constitute a lubricating system of the internal combustion engine.
  • the oil pump pumps the oil to the corresponding position for lubrication, and when the internal combustion engine is stopped, The oil will be unloaded into the oil sump.
  • the oil pump needs to re-inject the required lubricating oil from the oil pan into the lubrication position, which results in a large power consumption of the oil pump and a long time for the oil pressure to be established, especially the starting of the internal combustion engine. At the stage, it is easy to cause poor lubrication.
  • One object of the present invention is to provide an oil filter that can reduce the power consumed by an oil pump when the internal combustion engine is started, and effectively shorten the time during which the oil pressure is established, so that the internal combustion engine is sufficiently lubricated as quickly as possible.
  • Another object of the present invention is to provide a lubrication system having the above-described oil filter.
  • the oil filter disclosed in the present invention comprises a lubricating oil passage, and an oil inlet and an oil outlet respectively disposed at two ends of the lubricating oil passage, and further comprising a gas inlet, And only the lubricating oil is allowed to flow into the one-way valve in the lubricating oil passage.
  • the method further includes an oil return pressure passage, one end of the oil return pressure passage is in communication with the lubricating oil passage, and the other end is provided with a oil return port through which lubricating oil flowing back flows.
  • the method further includes a pressure limiting valve disposed at the oil return port, and the pressure limiting valve opens the oil returning pressure passage when the returning lubricating oil pressure reaches the opening pressure of the pressure limiting valve.
  • the oil inlet is provided with a frustum-shaped flow guiding portion, and the one-way valve is embedded in the frustum-shaped flow guiding portion.
  • the casing of the oil collecting filter has a triangular shape, and the casing is drilled with a first passage penetrating two of the corners, and a third portion that is drilled into and communicated with the first passage
  • the two passages are closed at both ends of the first passage by a screw plug, and the oil outlet and the oil return port are respectively opened on the side wall thereof, and the second passage and the first passage are close to the oil outlet
  • the portion constitutes the lubricating oil passage
  • the portion of the first passage close to the oil return port constitutes the oil return pressure passage.
  • the first passage and the second passage are connected by an arc-shaped transition section, and the arc-shaped transition section is curved toward the oil outlet.
  • the lubricating system disclosed in the present invention is used in an internal combustion engine, and includes an oil pump and the oil filter disclosed in any one of the above, wherein
  • An oil outlet of the oil collection filter is in communication with an inlet of the oil pump
  • the oil return port of the oil collecting filter is in communication with the oil return passage of the internal combustion engine.
  • a sealing member is disposed between the oil outlet and the inlet of the oil pump, and between the oil return port and the body of the internal combustion engine.
  • the seal is a gasket or an O-ring.
  • the lubricating system of the internal combustion engine disclosed in the present invention is the lubrication system disclosed in any of the above.
  • the oil filter disclosed in the present invention comprises a lubricating oil passage and an oil inlet and an oil outlet provided at both ends of the lubricating oil passage, and at the oil inlet port position, the oil oil set in the invention
  • the filter is also provided with a one-way valve that only allows lubricating oil to flow from the oil sump into the lubricating oil passage.
  • the lubricating oil When the internal combustion engine is stopped, the lubricating oil will return from the oil outlet to the oil collecting filter, and since the oil inlet of the oil collecting filter is provided with a check valve, the one-way valve only allows the lubricating oil to flow into the lubricating oil passage, in view of the single The valve has a reverse cut-off characteristic, so the lubricant that flows back into the oil collector will not continue from The oil inlet is returned to the oil sump, and the lubricating oil is temporarily stored in the oil filter. This makes it possible to effectively shorten the settling time of the oil pressure when the internal combustion engine is restarted, and the lubricating oil can reach the relevant lubrication position more quickly, so that the internal combustion engine can be fully lubricated as soon as possible.
  • the lubricating system also has the advantage that the oil pressure establishing time is short.
  • the internal combustion engine disclosed in the present invention adopts the above-mentioned lubricating system, and thus the internal combustion engine has the corresponding advantages of the above lubricating system, and will not be further described herein.
  • FIG. 1 is a schematic view showing the flow direction of a lubricating oil in the initial stage of starting an internal combustion engine according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing the flow direction of lubricating oil when the oil returning pressure passage of the oil collecting filter disclosed in the embodiment of the present invention is opened;
  • FIG. 3 is a schematic view showing the flow direction of lubricating oil when the oil collecting filter is stopped during the stop of the internal combustion engine according to the embodiment of the present invention
  • FIG. 4 is a top plan view of the oil filter disclosed in the embodiment of the present invention.
  • 1 is the lubricating oil passage
  • 2 is the oil returning pressure passage
  • 3 is the oil inlet port
  • 4 is the oil outlet port
  • 5 is the oil return port
  • 6 is the pressure limiting valve
  • 7 is the check valve
  • 8 is the truncated cone guide.
  • the flow part, 9 is a housing
  • 10 is a screw plug
  • 11 is an O-ring
  • 12 is a filter.
  • One of the cores of the present invention is to provide an oil collecting filter so as to be able to reduce the power consumed by the oil pump when the internal combustion engine is started, and to effectively shorten the time during which the oil pressure is established, so that the internal combustion engine is sufficiently lubricated as soon as possible.
  • Another core of the present invention is also to provide a lubrication system having the above-described oil filter.
  • Still another core of the present invention is to provide an internal combustion engine having the above lubrication system.
  • the oil filter disclosed in the embodiment of the present invention includes a lubricating oil passage 1 , and an oil inlet 3 and an oil outlet 4 respectively disposed at two ends of the lubricating oil passage 1 , compared to existing ones.
  • the oil collecting filter disclosed in the present invention is also provided with a check valve 7 at the oil inlet 3, which allows only the lubricating oil to flow into the lubricating oil passage 1 in the oil collecting filter.
  • the filter 12 should be disposed at the position of the oil feed 3, and in order to further optimize the technical solution in the above embodiment, the oil filter of the present invention is further provided with a return oil pressurization passage 2, as shown in FIG. 1 to FIG.
  • One end of the oil return passage 2 communicates with the lubricating oil passage 1, and the other end is provided with a return port 5 through which the lubricating oil flowing back flows.
  • the lubricating oil in the oil return passage 2 will merge with the lubricating oil flowing into the lubricating oil passage 1 from the oil inlet 3, which will effectively increase the oil filter.
  • the flow rate and pressure at the oil port 4, and the oil outlet 4 of the oil collecting filter are connected with the inlet of the oil pump, so the oil collecting filter can effectively increase the inlet pressure of the oil pump, reduce the power consumption of the oil pump, and improve fuel economy. .
  • the inlet pressure of the oil pump is improved by improving the oil filter, and the idea of using a variable displacement oil pump with complicated structure is avoided, and the structure is simple and the cost is relatively high. Under the premise of low, the purpose of reducing the power consumption of the oil pump is achieved.
  • the embodiment of the present invention further improves the technical solution in the above embodiment.
  • the pressure limiting valve 6 is disposed at the oil return port 5, as shown in FIG. As shown in Fig. 3, when the pressure of the returning lubricating oil reaches the opening pressure of the pressure limiting valve 6, the pressure limiting valve 6 is opened, thereby opening the oil returning pressure passage 2. At the beginning of the start of the internal combustion engine, the lubricating oil inside the internal combustion engine is still insufficient.
  • the oil pressurizing passage 2 enters the inlet of the oil pump together with the lubricating oil flowing from the oil inlet 3, which effectively increases the oil inlet pressure of the oil pump, and also reduces the outlet pressure of the oil pump, thereby improving the machine.
  • the volumetric efficiency of the oil pump saves the power consumption of the oil pump, as shown in Figure 2.
  • a frustum-shaped flow guiding portion is further provided so that the lubricating oil can smoothly enter the lubricating oil passage 1, and of course, the one-way valve can also be used.
  • 7 is embedded in the frustum-shaped flow guiding portion 8, which makes the structural layout of the whole machine more compact and reasonable.
  • the oil filter housing 9 disclosed in the embodiment of the present invention has a triangular shape. As shown in FIGS. 1 to 4, the oil passage in the oil collection filter is formed as follows:
  • the housing 9 is drilled with a first passage penetrating the two corners thereof, and a second passage bored by the other corner and communicating with the first passage, the two ends of the first passage being closed by the screw plug 10 on the side wall
  • the oil outlet 4 and the oil return port 5 are respectively opened, and the section of the second passage and the first passage near the oil outlet 4 constitutes the lubricating oil passage 1, and the first passage is close to the section of the oil return port 5, and constitutes a back Oil booster channel 2. It can be seen that the machining method can realize the processing of the oil passage in the oil collecting filter. Of course, the oil passage in the oil collecting filter can also be processed by casting.
  • the first passage and the second passage are connected by a curved transition section, as shown in FIGS. 1 to 3, the curved transition end. Bending toward the oil outlet 4 .
  • the invention also discloses a lubricating system for use in an internal combustion engine, comprising an oil pump and the oil collecting filter disclosed in any one of the above embodiments, wherein the oil outlet 4 of the oil collecting filter is connected to the inlet of the oil pump, and the oil set is The oil return port 5 of the filter is in communication with the oil return passage of the internal combustion engine.
  • the cooperation of the oil pump with the oil filter disclosed in the above embodiment effectively increases the pressure at the inlet of the oil pump, reduces the power consumption of the oil pump, and improves fuel economy.
  • a seal is provided between the oil outlet 4 and the inlet of the oil pump, and between the oil return port 5 and the body of the internal combustion engine, and the seal member is provided.
  • the seal member is provided.
  • the sealing member in this embodiment is an O-ring 11 as shown in FIGS. 1 to 3.
  • an internal combustion engine is disclosed in the present invention, and the lubrication system of the internal combustion engine is the lubrication system in the above embodiment. It is to be noted that the internal combustion engine includes, but is not limited to, a diesel engine and a gasoline engine.
  • the internal combustion engine also has the advantage of good fuel economy.

Abstract

一种机油集滤器，包括润滑油通道（1），和分别设置在润滑油通道（1）两端的进油口（3）和出油口（4），还包括设置在进油口处且仅允许润滑油流入润滑油通道内的单向阀（7）。还公开了一种采用该机油集滤器的润滑系统，以及一种具有该润滑系统的内燃机。在内燃机停机时，润滑油将从出油口回流至机油集滤器内，而由于机油集滤器的进油口位置设置了单向阀，因此回流至机油集滤器内的润滑油将无法继续从进油口回流至油底壳内，润滑油被暂存在了机油集滤器内，这就使得再次启动内燃机时可以有效缩短油压建立的时间，润滑油可以更快的到达相关润滑位置，从而使内燃机尽快得到充分润滑。

Description

一种内燃机、润滑系统及机油集滤器
本申请要求于2016年08月15日提交中国专利局、申请号为201610674143.X、发明名称为“一种内燃机、润滑系统及机油集滤器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及内燃机生产技术领域，特别涉及一种内燃机、润滑系统及机油集滤器。
背景技术
众所周知，内燃机在运行过程中需要润滑油对各个运动副进行润滑，以避免各运动副出现干摩擦，从而保证内燃机可靠的运行。
油底壳、润滑油道、机油泵以及设置在机油泵前的机油集滤器构成了内燃机的润滑系统，在内燃机运行时，机油泵将机油泵送至相应位置进行润滑，而在内燃机停机时，机油将卸载至油底壳内。当再次启动内燃机时，机油泵需要重新从油底壳泵入所需的润滑油进入润滑位置，这导致机油泵耗费的功率较大，而且导致油压建立的时间较长，尤其是内燃机的启动阶段，容易造成润滑不良的情况出现。
因此，如何能够降低内燃机启动时机油泵所耗费的功率，并且能够有效缩短油压建立的时间，以使内燃机尽快得到充分润滑是目前本领域技术人员亟需解决的技术问题。
发明内容
本发明的目的之一是提供一种机油集滤器，以便能够降低内燃机启动时机油泵所耗费的功率，并且有效缩短油压建立的时间，从而使内燃机尽快得到充分润滑。
本发明的另一目的还在于提供一种具有上述机油集滤器的润滑系统。
本发明的再一目的还在于提供一种具有上述润滑系统的内燃机。
为达到上述目的，本发明中所公开的机油集滤器包括润滑油通道，和分别设置在所述润滑油通道两端的进油口和出油口，还包括设置在所述进油口处， 且仅允许润滑油流入所述润滑油通道内的单向阀。
优选的，还包括回油增压通道，所述回油增压通道的一端与所述润滑油通道连通，另一端设置有供回流的润滑油流入的回油口。
优选的，还包括设置在所述回油口处的限压阀，且在回流的润滑油压力达到所述限压阀的开启压力时，所述限压阀开启所述回油增压通道。
优选的，所述进油口处设置有锥台状导流部，所述单向阀嵌设在所述锥台状导流部内。
优选的，所述机油集滤器的壳体呈三角形状，且所述壳体钻设有贯通其中两个角的第一通道，和由另外一个角钻入并与所述第一通道连通的第二通道，所述第一通道两端通过螺塞封闭，且其侧壁上分别开设有所述出油口和回油口，所述第二通道与所述第一通道靠近所述出油口的部分构成所述润滑油通道，所述第一通道靠近所述回油口的部分构成所述回油增压通道。
优选的，所述第一通道与所述第二通道通过弧形过渡段连接，且所述弧形过渡段朝向所述出油口方向弯曲。
本发明所公开的润滑系统，用于内燃机中，包括机油泵和上述任意一项中所公开的机油集滤器，其中，
所述机油集滤器的出油口与所述机油泵的入口连通；
所述机油集滤器的回油口与所述内燃机的回油通道连通。
优选的，所述出油口与所述机油泵的入口处，以及所述回油口与所述内燃机的机体之间均设置有密封件。
优选的，所述密封件为密封垫或O型密封圈。
本发明所公开的内燃机其润滑系统为上述任意一项中所公开的润滑系统。
由以上技术方案可以看出，本发明中所公开的机油集滤器包括润滑油道和设置在润滑油道两端的进油口和出油口，并且在进油口位置，本发明中的机油集滤器还设置了单向阀，该单向阀仅允许润滑油从油底壳向润滑油通道内流入。
在内燃机停机时，润滑油将从出油口回流至机油集滤器内，而由于机油集滤器的进油口位置设置了单向阀，该单向阀仅允许润滑油流入润滑油道，鉴于单向阀具有反向截止的特性，因此回流至机油集滤器内的润滑油将无法继续从 进油口回流至油底壳内，润滑油被暂存在了机油集滤器内。这就使得再次启动内燃机时可以有效缩短油压建立的时间，润滑油可以更快的达到相关润滑位置，从而使内燃机尽快得到充分润滑。
本发明中所公开的润滑系统中由于采用了上述机油集滤器，因此该润滑系统也具有油压建立时间短的优点。
本发明所公开的内燃机采用了上述润滑系统，因而该内燃机兼具上述润滑系统相应的优点，本文对此不再进行赘述。
附图说明
图1为本发明实施例中所公开的机油集滤器在内燃机启动初期的润滑油流向示意图；
图2为本发明实施例中所公开的机油集滤器的回油增压通道打开时的润滑油流向示意图；
图3为本发明实施例中所公开的机油集滤器在内燃机停机时的润滑油流向示意图；
图4为本发明实施例中所公开的机油集滤器的俯视示意图。
其中，
1为润滑油通道，2为回油增压通道，3为进油口，4为出油口，5为回油口，6为限压阀，7为单向阀，8为锥台状导流部，9为壳体，10为螺塞，11为O型密封圈，12为过滤网。
具体实施方式
本发明的核心之一是提供一种机油集滤器，以便能够降低内燃机启动时机油泵所耗费的功率，并且有效缩短油压建立的时间，从而使内燃机尽快得到充分润滑。
本发明的另一核心还在于提供一种具有上述机油集滤器的润滑系统。
本发明的再一核心在于提供一种具有上述润滑系统的内燃机。
为了使本技术领域的人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。
请参考图1至图3，本发明实施例中所公开的机油集滤器包括润滑油通道1，和分别设置在润滑油通道1两端的进油口3和出油口4，相比于现有技术，本发明中所公开的机油集滤器还在进油口3处设置了单向阀7，该单向阀7仅允许润滑油流入机油集滤器内的润滑油通道1。
如图3中所示，在内燃机停机时，润滑油将从出油口4回流至机油集滤器内，而由于机油集滤器的进油口3位置设置了单向阀7，该单向阀7仅允许润滑油流入润滑油道，鉴于单向阀7具有反向截止的特性，因此回流至机油集滤器内的润滑油将无法继续从进油口3回流至油底壳内，润滑油被暂存在了机油集滤器内。这就使得再次启动内燃机时可以有效缩短油压建立的时间，润滑油可以更快的达到相关润滑位置，从而使内燃机尽快得到充分润滑。
当然，进油3位置应当设置过滤网12，为了进一步优化上述实施例中的技术方案，本发明中的机油集滤器还设置了回油增压通道2，如图1至图3中所示，回油增压通道2的一端与润滑油通道1连通，另一端设置有供回流的润滑油流入的回油口5。
不难理解的是，在实际工作过程中，回油增压通道2内的润滑油将与由进油口3流入润滑油通道1内的润滑油合流，这将有效增大机油集滤器的出油口4处的流量和压力，而机油集滤器的出油口4与机油泵的入口连通，因而该机油集滤器可以有效提高机油泵的入口压力，降低机油泵的功率消耗，提升燃油经济性。
由此可见，本发明实施例中通过对机油集滤器进行改进而实现了对机油泵入口压力的提升，避开了目前采用结构复杂的可变排量机油泵的思路，在结构简单，成本较低的前提下达到了降低机油泵功率消耗的目的。
为了有效提高机油泵入口的压力，本实施例对上述实施例中的技术方案作了进一步改进，在本实施例中，还包括设置在回油口5处的限压阀6，如图1至图3中所示，在回流的润滑油压力达到限压阀6的开启压力时，限压阀6开启，从而使回油增压通道2打开。在内燃机启动的初期，内燃机内部的润滑油还不足，此时回油口5位置没有润滑油回流或者回流的润滑油非常少，回流的润滑油的压力不足以打开限压阀6，因而此时机油集滤器内的润滑油均是从润滑油通道1的入口流入，如图1中所示；随着内燃机转速的提高，机油泵泵 出的机油量增加，内燃机的主油道内的机油压力也随之升高，当回油压力上升到限压阀6的开启压力时，内燃机中过剩的润滑油将从回油口5流入到回油增压通道2内，并与从进油口3流入的润滑油一起进入机油泵的入口，这就有效提高了机油泵的进油压力，同时也降低了机油泵的出口压力，提高了机油泵的容积效率，节省机油泵的功率消耗，如图2中所示。
如图1至3中所示，在机油集滤器的进油口3位置，还设置有锥台状的导流部，以便润滑油顺利进入润滑油通道1内，当然，还可将单向阀7嵌设在该锥台状导流部8内，这可使整机的结构布局更加紧凑合理。
本发明实施例中所公开的机油集滤器壳体9呈三角形状，如图1至图4中所示，该机油集滤器中的油道采用如下方式形成：
壳体9钻设有贯通其中两个角的第一通道，和由另一个角钻入并且与第一通道连通的第二通道，第一通道的两端通过螺塞10封闭，其侧壁上分别开设有上述出油口4和回油口5，第二通道与第一通道靠近出油口4的节段构成上述润滑油通道1，第一通道靠近回油口5的节段，构成回油增压通道2。由此可见，采用机加工的方法可以实现对机油集滤器内油道的加工，当然，还可采用铸造的方式来对机油集滤器内的油道进行加工。
为了充分利用润滑油本身的动量，避免两股润滑油产生直接冲击，本实施例中第一通道与第二通道采用弧形过渡段连接，如图1至3中所示，弧形过渡连接端朝向出油口4的方向弯曲。
本发明还公开了一种润滑系统，用于内燃机中，包括机油泵和上述任意一实施例中所公开的机油集滤器，其中机油集滤器的出油口4与机油泵的入口相连，机油集滤器的回油口5与内燃机的回油通道连通。
该润滑系统中，通过机油泵与上述实施例中所公开的机油集滤器的配合，有效提高了机油泵入口处的压力，降低了机油泵的功率消耗，提升了燃油经济性。
进一步的，为了防止机油泵吸空或者产生机油泄漏，本实施例中在出油口4与机油泵的入口处，以及回油口5与内燃机的机体之间均设置了密封件，密封件的实现形式较多，例如密封垫或者密封圈，本实施例中的密封件为O型密封圈11，如图1至图3中所示。
除此之外，本发明中还公开了一种内燃机，该内燃机的润滑系统为上述实施例中的润滑系统，需要进行说明的是，该内燃机包括但不限于柴油机和汽油机。
由于采用了上述润滑系统，因而该内燃机也具有燃油经济性好的优点。
以上对本发明所提供的内燃机、润滑系统及机油集滤器进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (10)

  1. 一种机油集滤器，包括润滑油通道(1)，和分别设置在所述润滑油通道(1)两端的进油口(3)和出油口(4)，其特征在于，还包括设置在所述进油口(3)处，且仅允许润滑油流入所述润滑油通道(1)内的单向阀(7)。
  2. 根据权利要求1所述的机油集滤器，其特征在于，还包括回油增压通道(2)，所述回油增压通道(2)的一端与所述润滑油通道(1)连通，另一端设置有供回流的润滑油流入的回油口(5)。
  3. 根据权利要求2所述的机油集滤器，其特征在于，还包括设置在所述回油口(5)处的限压阀(6)，且在回流的润滑油压力达到所述限压阀(6)的开启压力时，所述限压阀(6)开启所述回油增压通道(2)。
  4. 根据权利要求1所述的机油集滤器，其特征在于，所述进油口(3)处设置有锥台状导流部(8)，所述单向阀(7)嵌设在所述锥台状导流部(8)内。
  5. 根据权利要求2所述的机油集滤器，其特征在于，所述机油集滤器的壳体(9)呈三角形状，且所述壳体(9)钻设有贯通其中两个角的第一通道，和由另外一个角钻入并与所述第一通道连通的第二通道，所述第一通道两端通过螺塞(10)封闭，且其侧壁上分别开设有所述出油口(4)和回油口(5)，所述第二通道与所述第一通道靠近所述出油口(4)的部分构成所述润滑油通道(1)，所述第一通道靠近所述回油口(5)的部分构成所述回油增压通道(2)。
  6. 根据权利要求5所述的机油集滤器，其特征在于，所述第一通道与所述第二通道通过弧形过渡段连接，且所述弧形过渡段朝向所述出油口(4)方向弯曲。
  7. 一种润滑系统，用于内燃机中，其特征在于，包括机油泵和如权利要求1-6任意一项所述的机油集滤器，其中，
    所述机油集滤器的出油口(4)与所述机油泵的入口连通；
    所述机油集滤器的回油口(5)与所述内燃机的回油通道连通。
  8. 根据权利要求7所述的润滑系统，其特征在于，所述出油口(4)与所述机油泵的入口处，以及所述回油口(5)与所述内燃机的机体之间均设置有密封件。
  9. 根据权利要求8所述的润滑系统，其特征在于，所述密封件为密封垫或O型密封圈(11)。
  10. 一种内燃机，其特征在于，所述内燃机的润滑系统为如权利要求7-9任意一项所述的润滑系统。
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