CN106050356A - Internal combustion engine, lubricating system and machine oil sump strainer - Google Patents
Internal combustion engine, lubricating system and machine oil sump strainer Download PDFInfo
- Publication number
- CN106050356A CN106050356A CN201610670662.9A CN201610670662A CN106050356A CN 106050356 A CN106050356 A CN 106050356A CN 201610670662 A CN201610670662 A CN 201610670662A CN 106050356 A CN106050356 A CN 106050356A
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- China
- Prior art keywords
- oil
- channel
- sump strainer
- lubricating
- internal combustion
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Classifications
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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
- F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a machine oil sump strainer. The machine oil sump strainer comprises a lubricating oil channel and an oil inlet and an oil outlet respectively formed in two ends of the lubricating oil channel, and further comprises an oil return boost channel; one end of the oil return boost channel is communicated with the lubricating oil channel; and an oil return port for flowing in returned lubricating oil is formed in the other end of the oil return boost channel. In actual working process, the lubricating oil in the oil return boost channel is merged with the lubricating oil flowing in the lubricating oil channel by the oil inlet, so that the flow and the pressure of the machine oil sump strainer in the oil outlet are effectively increased; and the oil outlet of the machine oil sump strainer is communicated with an inlet of a machine oil pump, the machine oil sump strainer can effectively improve the inlet pressure of the machine oil pump, reduces the power consumption of the machine oil pump, and promotes the fuel economy. The invention further discloses a lubricating system using the machine oil sump strainer and an internal combustion engine with the lubricating system.
Description
Technical field
The present invention relates to internal combustion engine production technical field, particularly to a kind of internal combustion engine, lubricating system and sump strainer.
Background technology
It is known that internal combustion engine needs lubricating oil to be lubricated each kinematic pair in running, to avoid each fortune
There is dry friction in dynamic pair, thus ensures that internal combustion engine runs reliably.
Oil sump, oil leab, lubricating oil pump and the sump strainer before being arranged on lubricating oil pump constitute the profit of internal combustion engine
Sliding system, along with the progressively development of science and technology, promote fuel economy and whole aircraft reliability becomes internal combustion engine future development must
So trend, reduces the power that lubricating oil pump is consumed, is an up an important technical of fuel economy.
The lifting of lubricating oil pump inlet pressure can effectively reduce the power consumption of lubricating oil pump, in that case, lubricating oil pump
Consume smaller power easily to input lubricating oil to specifying lubricating place, in order to improve the inlet pressure of lubricating oil pump, at present
Occur in that displacement-variable oil pump, but the structure of displacement-variable oil pump is extremely complex, also need to the control knot of complexity simultaneously
Structure, by changing gear width or by realizing reducing the purpose of lubricating oil pump power consumption by the way of changing eccentricity of rotor, should
Planting lubricating oil pump not only needs space to be mounted relatively big, and installation and the cost safeguarded are the highest.
Summary of the invention
An object of the present invention is to provide a kind of sump strainer, so as to relatively low cost and more simplify
Structure reaches the purpose of elevator oil pump inlet pressure, thus reduces the power consumption of lubricating oil pump, promotes fuel economy.
Another object of the present invention also resides in a kind of lubricating system with said engine oil collecting filter of offer.
Another object of the present invention also resides in a kind of internal combustion engine with above-mentioned lubricating system of offer.
For reaching above-mentioned purpose, the sump strainer that disclosed in this invention, including grease channel, and it is separately positioned on
The oil-in at described grease channel two ends and oil-out, this sump strainer also includes oil return Pressure channel, and described oil return increases
One end of pressure passageway connects with described grease channel, and the other end is provided with the oil return opening that the lubricating oil for backflow flows into.
Preferably, also include being arranged on the pressure limiting valve at described oil return opening, and reach described at the lubricating oil pressure refluxed
During the unlatching pressure of pressure limiting valve, described oil return Pressure channel opened by described pressure limiting valve.
Preferably, it is provided with frustum diversion division at described oil-in.
Preferably, described sump strainer triangular shape, and described sump strainer is drilled with through two of which angle
First passage, the second channel entering with by another one angular bit and connecting with described first passage, described first passage two ends
Being closed by plug screw, and offer described oil-out and oil return opening on its sidewall respectively, described second channel leads to described first
Road constitutes described grease channel near the part of described oil-out, and described first passage is constituted near the part of described oil return opening
Described oil return Pressure channel.
Preferably, described first passage is connected by arc-shaped transition section with described second channel, and described arc-shaped transition section
Bend towards described oil-out direction.
The invention also discloses a kind of lubricating system, in internal combustion engine, including institute in lubricating oil pump and above-mentioned any one
Disclosed sump strainer, wherein,
The oil-out of described sump strainer connects with the entrance of described lubricating oil pump；
The oil return opening of described sump strainer connects with the drainback passage of described internal combustion engine.
Preferably, the porch of described oil-out and described lubricating oil pump, and the machine of described oil return opening and described internal combustion engine
Sealing member it is provided with between body.
Preferably, described sealing member is sealing gasket or O RunddichtringO.
Also disclosing a kind of internal combustion engine in the present invention, the lubricating system of this internal combustion engine is disclosed in above-mentioned any one
Lubricating system.
Preferably, described internal combustion engine is diesel engine or gasoline engine.
As can be seen from the above technical solutions, in the sump strainer that disclosed in this invention, including grease channel and
It is separately positioned on oil-in and the oil-out at grease channel two ends, in addition, is also additionally arranged oil return Pressure channel, this oil return
One end of Pressure channel connects with grease channel, and the other end is provided with the oil return opening that the lubricating oil for backflow flows into.
In practical work process, the lubricating oil in oil return Pressure channel by with flowed into the profit in grease channel by oil-in
Lubricating oil collaborates, and this will effectively increase the flow at the oil-out of sump strainer and pressure, and the oil-out of sump strainer with
The entrance connection of lubricating oil pump, thus this sump strainer can be effectively improved the inlet pressure of lubricating oil pump, reduces the merit of lubricating oil pump
Rate consumes, and promotes fuel economy.
The lubricating system that disclosed in this invention, owing to being provided with said engine oil collecting filter, therefore machine before lubricating oil pump
The inlet pressure of oil pump gets a promotion, and the power that lubricating oil pump is consumed simultaneously is decreased obviously.
The internal combustion engine that disclosed in this invention owing to have employed above-mentioned lubricating system, therefore this internal combustion engine have excellence
Fuel economy.
Accompanying drawing explanation
Fig. 1 is that the sump strainer disclosed in the embodiment of the present invention lubricating oil at the internal combustion engine start initial stage flows to signal
Figure；
Fig. 2 is that the oil return Pressure channel of sump strainer disclosed in embodiment of the present invention lubricating oil when opening flows to
Schematic diagram；
Fig. 3 is that the sump strainer disclosed in the embodiment of the present invention lubricating oil when engine shutdown flows to signal
Figure；
Fig. 4 is the schematic top plan view of sump strainer disclosed in the embodiment of the present invention.
Wherein,
1 is grease channel, and 2 is oil return Pressure channel, and 3 is oil-in, and 4 is oil-out, and 5 is oil return opening, and 6 is pressure limiting
Valve, 7 is check valve, and 8 is frustum diversion division, and 9 is housing, and 10 is plug screw, and 11 is O RunddichtringO, and 12 is drainage screen.
Detailed description of the invention
One of core of the present invention is to provide a kind of sump strainer, so as to relatively low cost and more simplify
Structure reaches the purpose of elevator oil pump inlet pressure, thus reduces the power consumption of lubricating oil pump, promotes fuel economy.
Another core of the present invention also resides in a kind of lubricating system with said engine oil collecting filter of offer.
Another core of the present invention is to provide a kind of internal combustion engine with above-mentioned lubricating system.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.
Refer to Fig. 1 to Fig. 4, the sump strainer that disclosed in this invention includes grease channel 1 and is separately positioned on
The oil-in 3 at grease channel 1 two ends and oil-out 4, wherein oil-in 3 position arranges drainage screen 12, in order to filtering lubricant oil
In impurity, compared to prior art, the sump strainer in the present invention is also provided with oil return Pressure channel 2, such as Fig. 1 to Fig. 3
Shown in, one end of oil return Pressure channel 2 connects with grease channel 1, and the other end is provided with what the lubricating oil for backflow flowed into
Oil return opening 5.
Understandable, in practical work process, the lubricating oil in oil return Pressure channel 2 will flow with by oil-in 3
Entering the lubricating oil interflow in grease channel 1, this will effectively increase the flow at the oil-out 4 of sump strainer and pressure, and
The oil-out 4 of sump strainer connects with the entrance of lubricating oil pump, thus this sump strainer can be effectively improved entering of lubricating oil pump
Mouth pressure, reduces the power consumption of lubricating oil pump, promotes fuel economy.
As can be seen here, the embodiment of the present invention achieves lubricating oil pump entrance pressure by improving sump strainer
The lifting of power, avoids the thinking using baroque displacement-variable oil pump, in simple in construction, under lower-cost premise
Reach to reduce the purpose of lubricating oil pump power consumption.
In order to be effectively improved the pressure of lubricating oil pump entrance, the technical scheme in above-described embodiment has been made to enter one by the present embodiment
Step optimizes, and in the present embodiment, also includes the pressure limiting valve 6 being arranged at oil return opening 5, as shown in Figure 1 to Figure 3, in backflow
When lubricating oil pressure reaches the unlatching pressure of pressure limiting valve 6, pressure limiting valve 6 is opened, so that oil return Pressure channel 2 is opened.At internal combustion
Machine start initial stage, the lubricating oil of internal combustion engines is the most not enough, now oil return opening 5 position do not have lubricating oil backflow or backflow
Lubricating oil is considerably less, and the insufficient pressure of the lubricating oil of backflow is to open pressure limiting valve 6, thus the now lubricating oil in sump strainer
It is all to flow into, as shown in fig. 1 from the entrance of grease channel 1；Along with the raising of internal-combustion engine rotational speed, the machine oil that lubricating oil pump pumps out
Amount increases, and the engine oil pressure in the main oil gallery of internal combustion engine also increases, when return pressure rises to the unlatching pressure of pressure limiting valve 6
Time, lubricating oil superfluous in internal combustion engine will be flowed in oil return Pressure channel 2 from oil return opening 5, and with the profit flowed into from oil-in 3
Lubricating oil enters the entrance of lubricating oil pump together, and this is just effectively increased the input pressure of lubricating oil pump, also reduces lubricating oil pump simultaneously
Outlet pressure, improves the volumetric efficiency of lubricating oil pump, saves the power consumption of lubricating oil pump, as shown in Figure 2.
Further, refer to Fig. 1 to Fig. 3, also can arrange in oil-in 3 position and flow into grease channel for lubricating oil
Check valve 7 in 1, in order to avoid losing oil-feed build-up of pressure, it is bigger that check valve 7 should design, in order to reduces oil-feed resistance
Power, owing to check valve 7 has the function of backward stop, therefore lubricating oil is cannot be in sump strainer internal reflux to oil sump
Portion.This can provide basis to setting up rapidly of oil pressure during internal combustion engine start.
As shown in Figure 3, when the internal combustion engine stops, the lubrication pressure owing to lubricating oil pump no longer works, in internal combustion engine oil duct
Power reduces, and the lubricating oil retained in internal combustion engine will be unable to open pressure limiting valve 6, and therefore lubricating oil cannot be introduced into having Pressure channel
In, and can only be back in sump strainer by oil-out 4, and it is provided with check valve at the oil-in 3 of sump strainer
7, this check valve 7 can effectively prevent lubricating oil from refluxing to oil sump, and this just makes a lubricating oil part remain in sump strainer
In, a part remains in oil duct, when being again started up internal combustion engine, owing to the oil level needing pumping is less, and therefore can be
Oil pressure needed for setting up rapidly in short time, is effectively improved the lubrication state at internal combustion engine start initial stage.
If Fig. 1 is to as shown in 3, in oil-in 3 position of sump strainer, it is additionally provided with the diversion division of frustum, in order to
Lubricating oil enters in grease channel 1 smoothly, certainly, also can be embedded in this frustum diversion division 8 by check valve 7, and this can make
The topology layout of complete machine more compact and reasonable.
Sump strainer housing 9 triangular shape disclosed in the embodiment of the present invention, as shown in Figure 1 to Figure 4 shown in, this machine
Oil duct in oil collecting filter is formed in the following way:
Housing 9 is drilled with the first passage at through two of which angle, and is entered by another angular bit and connect with first passage
Logical second channel, the two ends of first passage are closed by plug screw 10, its sidewall are offered above-mentioned oil-out 4 and oil return respectively
Mouth 5, second channel and first passage constitute above-mentioned grease channel 1 near the sections of oil-out 4, and first passage is near oil return opening
The sections of 5, constitutes oil return Pressure channel 2.As can be seen here, mach method is used can to realize sump strainer internal oil channel
Processing, certainly, also can use the mode of casting that the oil duct in sump strainer is processed.
In order to make full use of the momentum of lubricating oil itself, it is to avoid two strands of lubricating oil produce and directly impact, in the present embodiment the
One passage uses arc-shaped transition section to be connected with second channel, Fig. 1 is to as shown in 3, and arc-shaped transition connects end towards oil-out 4
Direction bends.
The invention also discloses a kind of lubricating system, in internal combustion engine, including lubricating oil pump and above-mentioned any one embodiment
Sump strainer disclosed in, wherein the oil-out 4 of sump strainer is connected with the entrance of lubricating oil pump, returning of sump strainer
Hydraulic fluid port 5 connects with the drainback passage of internal combustion engine.
In this lubricating system, by coordinating of the lubricating oil pump sump strainer disclosed with above-described embodiment, effectively carry
The high pressure of lubricating oil pump porch, reduces the power consumption of lubricating oil pump, improves fuel economy.
Further, in order to prevent lubricating oil pump to be emptied or produce lubricating oil leakage, at oil-out 4 and machine oil in the present embodiment
Being provided with sealing member between the porch of pump, and oil return opening 5 and the body of internal combustion engine, the way of realization of sealing member is more,
Such as sealing gasket or sealing ring, the sealing member in the present embodiment is O RunddichtringO 11, as shown in Figure 1 to Figure 3.
In addition, also disclosing a kind of internal combustion engine in the present invention, the lubricating system of this internal combustion engine is in above-described embodiment
Lubricating system, need illustrate, this internal combustion engine includes but not limited to diesel engine and gasoline engine.
Owing to have employed above-mentioned lubricating system, thus this internal combustion engine also has the advantage that fuel economy is good.
Above internal combustion engine provided by the present invention, lubricating system and sump strainer are described in detail.Herein
Applying specific case to be set forth principle and the embodiment of the present invention, the explanation of above example is only intended to help
Understand method and the core concept thereof of the present invention.It should be pointed out that, for those skilled in the art, do not taking off
On the premise of the principle of the invention, it is also possible to the present invention is carried out some improvement and modification, these improve and modification also falls into this
In invention scope of the claims.
Claims (10)
1. a sump strainer, including grease channel (1), and is separately positioned on entering of described grease channel (1) two ends
Hydraulic fluid port (3) and oil-out (4), it is characterised in that also include oil return Pressure channel (2), one end of described oil return Pressure channel (2)
Connecting with described grease channel (1), the other end is provided with the oil return opening (5) that the lubricating oil for backflow flows into.
Sump strainer the most according to claim 1, it is characterised in that also include being arranged on described oil return opening (5) place
Pressure limiting valve (6), and when the lubricating oil pressure of backflow reaches the unlatching pressure of described pressure limiting valve (6), described pressure limiting valve (6) is opened
Described oil return Pressure channel (2).
Sump strainer the most according to claim 2, it is characterised in that described oil-in (3) place is provided with frustum and leads
Stream portion (8).
Sump strainer the most according to claim 1, it is characterised in that the housing (9) of described sump strainer is in triangle
Shape, and described housing (9) is drilled with the first passage at through two of which angle, and entered by another one angular bit and with described
The second channel of one channel connection, described first passage two ends are closed by plug screw (10), and have been offered respectively on its sidewall
Stating oil-out (4) and oil return opening (5), described second channel is constituted near the part of described oil-out (4) with described first passage
Described grease channel (1), described first passage constitutes described oil return Pressure channel (2) near the part of described oil return opening (5).
Sump strainer the most according to claim 4, it is characterised in that described first passage passes through with described second channel
Arc-shaped transition section connects, and described arc-shaped transition section bends towards described oil-out (4) direction.
6. a lubricating system, in internal combustion engine, it is characterised in that include lubricating oil pump and such as claim 1-5 any one
Described sump strainer, wherein,
The oil-out (4) of described sump strainer connects with the entrance of described lubricating oil pump；
The oil return opening (5) of described sump strainer connects with the drainback passage of described internal combustion engine.
Lubricating system the most according to claim 6, it is characterised in that described oil-out (4) and the entrance of described lubricating oil pump
Place, and it is provided with sealing member between described oil return opening (5) and the body of described internal combustion engine.
Lubricating system the most according to claim 7, it is characterised in that described sealing member is sealing gasket or O RunddichtringO
(11)。
9. an internal combustion engine, it is characterised in that the lubricating system of described internal combustion engine is as described in claim 6-8 any one
Lubricating system.
Internal combustion engine the most according to claim 9, it is characterised in that described internal combustion engine is diesel engine or gasoline engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610670662.9A CN106050356B (en) | 2016-08-15 | 2016-08-15 | A kind of internal combustion engine, lubricating system and sump strainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610670662.9A CN106050356B (en) | 2016-08-15 | 2016-08-15 | A kind of internal combustion engine, lubricating system and sump strainer |
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| Publication Number | Publication Date |
|---|---|
| CN106050356A true CN106050356A (en) | 2016-10-26 |
| CN106050356B CN106050356B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018032641A1 (en) * | 2016-08-15 | 2018-02-22 | 潍柴动力股份有限公司 | Internal combustion engine, lubrication system, and engine oil strainer |
| CN110017193A (en) * | 2018-01-10 | 2019-07-16 | 北汽福田汽车股份有限公司 | Oil trap and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000179319A (en) * | 1998-12-17 | 2000-06-27 | Daihatsu Motor Co Ltd | Oil strainer of automobile engine |
| JP2004293376A (en) * | 2003-03-26 | 2004-10-21 | Nissan Diesel Motor Co Ltd | Lubricating oil supply device for engine |
| KR20050032149A (en) * | 2003-10-01 | 2005-04-07 | 현대자동차주식회사 | Oil supply device for cvvt |
| CN200955449Y (en) * | 2006-09-05 | 2007-10-03 | 沈阳华晨金杯汽车有限公司 | Oil-circuit structure of automobile engine cylinder |
| JP2008267344A (en) * | 2007-04-24 | 2008-11-06 | Piolax Inc | Oil strainer |
| CN106050357B (en) * | 2016-08-15 | 2018-08-07 | 潍柴动力股份有限公司 | A kind of internal combustion engine, lubricating system and sump strainer |
-
2016
- 2016-08-15 CN CN201610670662.9A patent/CN106050356B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000179319A (en) * | 1998-12-17 | 2000-06-27 | Daihatsu Motor Co Ltd | Oil strainer of automobile engine |
| JP2004293376A (en) * | 2003-03-26 | 2004-10-21 | Nissan Diesel Motor Co Ltd | Lubricating oil supply device for engine |
| KR20050032149A (en) * | 2003-10-01 | 2005-04-07 | 현대자동차주식회사 | Oil supply device for cvvt |
| CN200955449Y (en) * | 2006-09-05 | 2007-10-03 | 沈阳华晨金杯汽车有限公司 | Oil-circuit structure of automobile engine cylinder |
| JP2008267344A (en) * | 2007-04-24 | 2008-11-06 | Piolax Inc | Oil strainer |
| CN106050357B (en) * | 2016-08-15 | 2018-08-07 | 潍柴动力股份有限公司 | A kind of internal combustion engine, lubricating system and sump strainer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018032641A1 (en) * | 2016-08-15 | 2018-02-22 | 潍柴动力股份有限公司 | Internal combustion engine, lubrication system, and engine oil strainer |
| US10876439B2 (en) | 2016-08-15 | 2020-12-29 | Weichai Power Co., Ltd. | Internal combustion engine, lubrication system, and engine oil strainer |
| CN110017193A (en) * | 2018-01-10 | 2019-07-16 | 北汽福田汽车股份有限公司 | Oil trap and vehicle |
| CN110017193B (en) * | 2018-01-10 | 2021-01-08 | 北汽福田汽车股份有限公司 | Oil collector and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050356B (en) | 2019-04-26 |
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