CN202100298U - Oil separating device of engine - Google Patents
Oil separating device of engine Download PDFInfo
- Publication number
- CN202100298U CN202100298U CN2011201982292U CN201120198229U CN202100298U CN 202100298 U CN202100298 U CN 202100298U CN 2011201982292 U CN2011201982292 U CN 2011201982292U CN 201120198229 U CN201120198229 U CN 201120198229U CN 202100298 U CN202100298 U CN 202100298U
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- Prior art keywords
- wall portion
- top wall
- oil
- valve mechanism
- mechanism cover
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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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
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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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
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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
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0461—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a labyrinth
Abstract
The utility model relates to an oil separating device of an engine, which is used for separating machine oil components contained in leaking gas from the leaking gas. The oil separating device is provided with an oil separating space. The oil separating space is formed in a cylinder cover shield made of synthetic resin along the column direction of the cylinder in elongated mode. The cylinder cover shield is arranged at the upper portion of a cylinder cover which is covered on the engine. The oil separating device comprises an upper top wall portion, a pair of lateral wall portions and a bottom wall portion. The upper top wall potion is the wall of the upper side where the width of the column orthogonal direction of the cylinder is smaller than the width of a top wall portion of the cylinder cover shield and is formed by one part of the top wall portion of the cylinder cover shield. The pair of the lateral wall portions extends downwards from two ends of the column orthogonal direction of the cylinder of the upper top wall portion. The bottom wall portion is connected onto the lower ends of the pair of the lateral wall portions and separates the lower end of the oil separating space. The pair of the lateral wall portions is arranged at the positions lower than the top wall portion and higher than the bottom wall portions and connected with the top wall portion of the cylinder cover shield. Accordingly, oil separating performance can be ensured, and vibration noise can be restrained.
Description
Technical field
The utility model relates to the oil separating device of motor, particularly in valve mechanism cover, possesses the oil separating device that forms the motor of oil separation space along the bank of cylinder direction.
Background technique
In the past, follow the burning of motor to be detained in the known crankcase that has owing to motor to have and comprise unburnt hydrocarbon (hydrocarbon, blowby gas HC) and make this blowby gas turn back to the technology of gas-entered passageway to burn once more of motor.At this moment, because the engine motor oil of the crankcase of motor is sneaked in the blowby gas with the mist of oil shape, therefore oil separating device is set with contained oil formulation in the separation blowby gas in the passage that blowby gas passes through, and utilizes air-intake negative-pressure that blowby gas is back in the air inlet.
Usually, oil separating device has oil separation space, and this oil separation space is integrally formed in the top of valve mechanism cover of the valve mechanism on coating gas cylinder cap top, and the top wall portion of utilizing valve mechanism cover is as bottom wall portion.In the oil separating device,, thereby make the holdup time of blowby gas in oil separation space long for the separating property that improves separated oil forms elongatedly guaranteeing the oil separation space volume along the bank of cylinder direction of valve mechanism cover oil separation space.
When the motor height overall is restricted because of the requirement in the design of engine hood line vehicles such as (bonnet line); Be difficult to guarantee the space of abundance on the top of valve mechanism cover; Therefore; Also known have in valve mechanism cover set inside oil separation space, keeps the technology that oil separates performance through guaranteeing spatial volume.
The oil separating device that the open communique spy of Japan Patent opens 2004-162625 number (below be called " patent documentation 1 ") is the oil separating device in the plastic valve mechanism cover on top of the oil separation space cylinder head that slenderly is formed at covering engine along the bank of cylinder direction; It comprises: upper wall portions, form valve mechanism cover top wall portion a part and be formed on the height and position identical with the height and position of top wall portion; Pair of sidewalls portion extends downwards from the two end part with direction bank of cylinder direction quadrature above-mentioned upper wall portions; And bottom wall portion, be linked to the underpart of above-mentioned pair of sidewalls portion and the lower end of separating oil separation space; Wherein, be provided with concavity portion and be positioned at the machine oil refluxing opening on the sidewall of this concavity portion in above-mentioned bottom wall portion, above-mentioned concavity portion is across bending channel and relative with the underpart of side wall portion.
In the oil separating device of patent documentation 1; Need not to increase miscellaneous part except that valve mechanism cover and the bottom wall portion; Can turn back to cylinder head side through the liquid level official post machine oil that is trapped in the machine oil in the bending channel, can not receive the restriction of motor height overall and guarantee the volume of oil separation space.Yet, might cause increasing because of the vibration of the film that wall portion produced of valve mechanism cover or oil separating device in this oil separating device to the vibrating noise that release car chamber etc.
In the oil separating device of patent documentation 1; Owing to the upper wall portions of oil separation space is formed at identical height and position as the part of the top wall portion of valve mechanism cover; Therefore; Distance between the top wall portion of the valve mechanism cover of the center of gravity of oil separation space and this oil separation space of support increases, and oil separation space increases with respect to the vibration meeting of the top wall portion of valve mechanism cover thereupon.Therefore, the film vibration of the top wall portion of the valve mechanism cover that is caused by the vibration of oil separation space increases, thereby causes increasing to the vibrating noise of external radiant.And, owing to partly increase in the upper wall portions of oil separation space and the continuous planar of top wall portion scope of valve mechanism cover, thereby might cause the film vibration to be easy to transmit and the increase of growth encourage vibrating noise.
Be formed at when oil separating device under the situation on top of valve mechanism cover; Though compare with above-mentioned oil separating device and to have planar part from top wall portion to the outstanding order difference part in top that to dwindle top wall portion from; But because the center of gravity of oil separation space and the oil separating device of distance between the top wall portion and patent documentation 1 likewise can increase, thereby oil separation space can become big with respect to the vibration of the top wall portion of valve mechanism cover.And, also increase towards the area of the side wall portion of the oil separation space of outside, from the vibrating noise of side wall portion to external radiant.
The model utility content
The purpose of the utility model is to provide a kind of oil separating device of motor, and the whole height that does not increase motor can guarantee that just oil separates performance, and can suppress the vibrating noise to external radiant.
For realizing above-mentioned purpose; The oil separating device of the motor of the utility model is used for separating the oil formulation that this blowby gas contains from blowby gas; Said oil separating device possesses oil separation space; This oil separation space slenderly is formed in the valve mechanism cover that the cylinder upper part of the cover synthetic resin of covering engine processes along the bank of cylinder direction; Said oil separating device is characterised in that and comprises: the top top wall portion is the wall of the width of bank of cylinder orthogonal direction less than the upside of the width of the top wall portion of said valve mechanism cover, with the part of the top wall portion of said valve mechanism cover and form; Pair of sidewalls portion, extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top; Bottom wall portion is linked to the lower end of said pair of sidewalls portion, and the lower end of said oil separation space is separated; Wherein, said pair of sidewalls portion than said top top wall portion more below and than said bottom wall portion more the top wall portion of top position and said valve mechanism cover link.
In the oil separating device of this motor; Because the pair of sidewalls portion that extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top at the above-below direction middle section position (promptly; Than said top top wall portion more the below and than said bottom wall portion top position more) be linked to the top wall portion of valve mechanism cover; Therefore; Utilize valve mechanism cover inside can form oil separation space, do not cause the increase of motor height overall just can guarantee the volume of oil separation space, and can shorten the distance between the top wall portion of center of gravity and valve mechanism cover of oil separation space.
According to said structure; Because the pair of sidewalls portion that extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top is connected in the top wall portion of valve mechanism cover at the above-below direction middle section position; Therefore; Utilize valve mechanism cover inside can form oil separation space, the whole height that need not to increase motor just can be guaranteed the volume of oil separation space, the separating property that can guarantee to separate oil formulation contained in the blowby gas.In addition; Owing to can shorten the distance between the top wall portion of center of gravity and valve mechanism cover of oil separation space and can dwindle the planar part of the top wall portion of valve mechanism cover; Therefore; Can suppress the vibration of oil separation space with respect to the top wall portion of valve mechanism cover, can suppress the valve mechanism cover that the vibration by oil separation space causes top wall portion the film vibration and suppress vibrating noise to external radiant.
Description of drawings
Fig. 1 is the stereogram that unloads the motor behind the related hood of the utility model.
Fig. 2 be motor want portion's longitudinal section.
Fig. 3 is the plan view of valve mechanism cover.
Fig. 4 is the sectional view along the IV-IV line of Fig. 3.
Fig. 5 is the sectional view along the V-V line of Fig. 3.
Fig. 6 is the sectional view along the VI-VI line of Fig. 3.
Fig. 7 is the sectional view along the VII-VII line of Fig. 3.
Fig. 8 be unload oil separator after the bottom wall portion from beneath the time stereogram.
Fig. 9 be the next door, top the underpart want portion's enlarged view.
Figure 10 is the stereogram of bottom wall portion.
Figure 11 is the plan view of bottom wall portion.
Figure 12 is the side view of bottom wall portion.
Figure 13 is the sectional view along the XIII-XIII line of Figure 11.
Embodiment
Below, the mode of execution of the utility model is described according to embodiment.
Below embodiment in, be that left and right directions among fore-and-aft direction, the figure is that left and right directions describes with the fore-and-aft direction of vehicle.
[embodiment 1]
Below, the embodiment 1 of the utility model is described according to Fig. 1～Figure 13.
Like Fig. 1, shown in Figure 2, the horizontal lift-launch of mode that four 1 in upright arrangement extends along the overall width direction with output shaft and is the hypsokinesis shape by the mode of rear view of vehicle more with past upside and is obliquely installed in engine compartment.
Motor 1 comprises following structure etc.: cylinder block 2 is provided with piston (omitting diagram) and bent axle (omitting diagram) etc.; Oil sump (omitting diagram) is arranged on cylinder block 2 bottoms and takes in machine oil in inside; Cylinder head 3 is arranged on cylinder block 2 tops and is accommodated into exhaust cam shaft 4a, 4b etc. in inside; The valve mechanism cover 20 of synthetic resin system (for example PA66), the top of coating gas cylinder cap 3; Plastic hood 5, the top of coating gas cylinder head cover 20 and be provided with along engine hood (bonnet) 10.
In addition, for ease of explanation, Fig. 1 is that expression is covered the figure after 5 from motor 1 unloaded engine.
Sidepiece is equipped with air inlet system 6 in the front side of motor 1.
Air inlet system 6 is provided with following structure etc.: throttle body 7 (omitting diagram) has the throttler valve of can regulate from the suction air inflow of air-strainer (omitting diagram) importing; Tandem-driving bogie 8 is arranged on throttle body 7 downstream sides; Intake manifold 9 is arranged on tandem-driving bogie 8 downstream sides and air inlet is imported to the suction port (omit diagram) of each cylinder.
Air inlet system 6 makes this fresh air import the firing chamber (omit and illustrate) of each cylinder through throttle body 7, tandem-driving bogie 8, intake manifold 9 after the extraneous gas that utilizes air-strainer to suck from the outside purifies and generates fresh air.Tandem-driving bogie 8 is connected in crankcase via the sub load that possesses the PCV valve with oil separating device (omitting diagram).
Below, valve mechanism cover 20 is described.
Like Fig. 1～Fig. 3, Fig. 5～shown in Figure 7, valve mechanism cover 20 is installed on the cylinder head 3 with the state on the top of coating gas cylinder cap 3.Valve mechanism cover 20 comprises following structure etc.: corresponding as first ridge 21 of camb cap with the admission cam shaft 4a that is arranged on vehicle front side, and extend along the bank of cylinder direction; As second ridge 22 of camb cap, corresponding with the exhaust cam shaft 4b that is arranged on vehicle rear-side, and extend along the bank of cylinder direction; Central authorities' top wall portion 23 is with linking between first ridge 21 and second ridge 22.
Like Fig. 1～Fig. 3 and shown in Figure 5, first ridge 21 comprises following structure etc.: first top wall portion 24, the basic section shape of bank of cylinder orthogonal direction form roughly " コ " shape, and are arranged on admission cam shaft 4a upside; The first anterior side wall portion 25 extends downwards from the front end of first top wall portion 24; The first rear sidewall portion 26 extends downwards from the rearward end of first top wall portion 24; Machine oil injection portion 27 possesses the opening that can let machine oil inject cylinder head 3; Oil level indicator assembly department 28 can be installed oil level indicator (omitting diagram).
The bank of cylinder direction substantial middle part that machine oil injection portion 27 is formed at first ridge 21 i.e. the anterior position of the position between so-called second cylinder and the 3rd cylinder and first ridge 21.Machine oil injection portion 27 possesses the cylindrical portion of giving prominence to the top from first top wall portion 24, and is screwed togather by the state of filler cap with inaccessible its open upper end.Oil level indicator assembly department 28 is arranged at 27 position adjacent with machine oil injection portion.Oil level indicator assembly department 28 possesses from first top wall portion 24 to the outstanding cylindrical portion in top etc., and oil level indicator is installed with the mode of inaccessible its open upper end.
Like Fig. 3, shown in Figure 7, central top wall portion 23 is formed at than lower position more such as first top wall portion, 24, the second anterior top wall portion 29 and the second rear portion top wall portion 30, and is connected in the first rear sidewall portion 26 and the second anterior top wall portion 29.Firing chamber with each cylinder on central authorities' top wall portion 23 is provided with four igniting unit holes 33 along the bank of cylinder direction accordingly, in each cell orifice 33 of lighting a fire igniting unit 11 (with reference to Fig. 7) is installed.Igniting unit 11 is fixed on the valve mechanism cover 20 through bolt 12.The height and position corresponding with near the position in igniting unit hole 33 of the second anterior top wall portion 29 forms lowlyer than the height and position of this second anterior top wall portion 29 beyond this height and position, and the second anterior top wall portion 29 forms the bolt assembly department 34 of the partial circle shape that can be screwed togather by bolt 12 with the second anterior side wall portion 31.
Top top wall portion 41 forms the part of the top wall portion of second ridge 22 with the second anterior top wall portion 29 and the second rear portion top wall portion 30.
Like Fig. 1, shown in Figure 3, on the right-hand end upper surface of top top wall portion 41, be formed with the open communication portion 45 that can be communicated with the inner oil separation space (the 3rd separation chamber that afterwards states) of oil separator 40 and air inlet system 6.This open communication portion 45 and throttler valve upstream side gas-entered passageway are communicated with through blowby gas service duct (omitting diagram), thereby the blowby gas of isolating behind the oil formulation is back in the gas-entered passageway.
Like Fig. 4～shown in Figure 9; The lower surface of top wall portion 41 on top; Between the anterior side wall portion 42 of the end, front and back of the bank of cylinder orthogonal direction that forms oil separation space and rear sidewall portion 43, comprise following structure etc. integratedly: inner wall part 46, formation can be with the introduction channel of the blowby conductance that is imported into to oil separation space; Side wall portion 47,48, the left and right end portions of the bank of cylinder direction of top wall portion 41 is extended downwards from top; Next door, top 49,50 is used for oil separation space is divided into three separation chambers; A plurality of supplemental wall portion 51 makes it to separate thereby be used for making the contained oil formulation of blowby gas to adhere to.
As shown in Figure 8; Anterior side wall portion 42 form the front side outer wall of oil separators 40 and form from the bank of cylinder direction right-hand end of valve mechanism cover 20 to the left direction extend, constitute and overlook down with along the state of the local peripheral shape of the bolt assembly department 34 roughly waveform of lateral bending song backward.Like Fig. 5, shown in Figure 6, anterior side wall portion 42 is basically at the above-below direction middle section position, promptly than top top wall portion 41 more below and more be linked to the rearward end of the second anterior top wall portion 29 in the linking department place of top position than bottom wall portion 44.Below, also will than top top wall portion 41 more the below and than bottom wall portion 44 more the top the position be called " above-below direction middle section position ".
As shown in Figure 7, the part of the anterior side wall portion 42 relative with bolt assembly department 34 by than said middle section position more the linking department of lower position be linked to the rearward end of the second anterior top wall portion 29.Therefore, the height and position of the linking department of the anterior side wall portion 42 and the second anterior top wall portion 29 is formed at the diverse location of above-below direction along the bank of cylinder direction.
As shown in Figure 8, forwardly the underpart of side wall portion 42 is provided with welding rib 42a, and anterior side wall portion 42 utilizes Vibration Welding to be engaged in the upper surface of bottom wall portion 44 through press tool etc.
Like Fig. 5～shown in Figure 8; Rear sidewall portion 43 forms the rear side outer wall of oil separator 40 and forms the bank of cylinder direction right-hand end direction extension to the left from valve mechanism cover 20, is linked to the front end of the second rear portion top wall portion 30 basically at the linking department place of above-below direction middle section position.As stated; Because anterior side wall portion 42 is linked to the rearward end of the second anterior top wall portion 29 at the above-below direction middle section position; Rear sidewall portion 43 is linked to the front end of the second rear portion top wall portion 30 at the above-below direction middle section position, therefore can shorten position of centre of gravity and the distance between the second anterior top wall portion 29 and the second rear portion top wall portion 30 of the oil separation space of oil separator 40.And, can shorten to than the second anterior top wall portion 29 and the second rear portion the top wall portion 30 more anterior side wall portion 42 that extends of below and the length of rear sidewall portion 43.
Like Fig. 8, shown in Figure 9, be provided with welding rib 43a in the underpart of rear sidewall portion 43, rear sidewall portion 43 utilizes Vibration Welding to be engaged in the upper surface of bottom wall portion 44.To shown in Figure 7, between the front surface of the back surface of rear sidewall portion 43 and the second rear sidewall portion 32, be provided with a plurality of strengthening rib 32a, the 32b that extend from the lower surface of the second rear portion top wall portion 30 downwards like Fig. 5.
As shown in Figure 7, the strengthening rib 32b of the position corresponding with igniting unit hole 33 compares with strengthening rib 32a beyond this strengthening rib 32b on the bank of cylinder direction, forms taper with the more little mode of width of more past downside bank of cylinder orthogonal direction.Thus, can make the support rigidity of the second rear portion top wall portion 30 different on the bank of cylinder direction, thereby can suppress the film vibration of the second rear portion top wall portion 30.
As shown in Figure 8, side wall portion 47 forms the bank of cylinder direction left side outer wall of oil separator 40 and forms from anterior side wall portion 42 to rear sidewall portion 43 edges and the direction of bank of cylinder quadrature and extends.Be provided with welding rib 47a in the underpart of side wall portion 47, be engaged in the upper surface of bottom wall portion 44 through Vibration Welding.Side wall portion 47 is provided with a plurality of recess 47b will weld rib 47a clamping.Therefore, welding rib 47a after the fusion is accommodated in the recess 47b and does not flow out to oil separation space.
The next door, top 49 of (side wall portion 47 sides) position, left side is arranged on from inner wall part 46 to the rear sidewall portion 43, forms and overlooks roughly crank shape.On next door, top 49; Have the less partitioned portion 49a of height dimension that extend along the bank of cylinder direction in the neutral position between inner wall part 46 and rear sidewall portion 43, and be formed with from the underpart side of right-hand end to the inner wall part 46 of partitioned portion 49a and be the inclination partitioned portion 49b that separates skewedly and be the inclination partitioned portion 49c that separates skewedly from the underpart side of left end to the rear sidewall portion 43 of partitioned portion 49a.
Be provided with welding rib 49d in the underpart in next door, top 49, be provided with a plurality of recess 49e will weld rib 49d clamping with inclination partitioned portion 49b, part that 49c is suitable.
The next door, top 50 of position, right side (side wall portion 48 sides) and next door, top 49 likewise are arranged on from inner wall part 46 to the rear sidewall portion 43, form and overlook roughly crank shape.
On next door, top 50; Have the bigger partitioned portion 50a of height dimension that extend along the bank of cylinder direction in the neutral position between inner wall part 46 and rear sidewall portion 43, and be formed with underpart side and be the inclination partitioned portion 50b that separates skewedly and be the inclination partitioned portion 50c that separates skewedly from the underpart side of left end to the rear sidewall portion 43 of partitioned portion 50a from the right-hand end of partitioned portion 50a to inner wall part 46.
Be provided with welding rib 50d in the underpart in next door, top 50, be provided with a plurality of recess 50e will weld rib 50d clamping with inclination partitioned portion 50b, part that 50c is suitable.
Below, the structure of bottom wall portion 44 is described.
Like Figure 10～shown in Figure 12, bottom wall portion 44 comprises following structure etc. integratedly: tabular plat part 52; Next door, bottom 53,54 is used for oil separation space is divided into three separation chambers; Gas importing portion 55 imports blowby gas in oil separation space; A plurality of supplemental wall portion 56 makes it to separate thereby be used for making the contained oil formulation of blowby gas to adhere to.
At stop part 52c from being formed with the gas importing portion 55 relative near the branch location of stop part 52a branch with inner wall part 46.Be directed to first separation chamber of the leftward position of oil separation space through the introduction channel that forms by top top wall portion 41, anterior side wall portion 42, inner wall part 46 and plat part 52 from the blowby gas of gas importing portion 55 importings.Shown in figure 12, the bottom surface sections 52d of introduction channel is low more from the position of first separation chamber then above-below direction far away, promptly forms the so-called shape that has a down dip.
Like Figure 10～shown in Figure 13, the next door, bottom 53 in left side is outstanding to the top from plat part 52, forms and overlooks roughly crank shape.The bigger partitioned portion 53a of height dimension that extends along the bank of cylinder direction in the neutral position that has on the next door, bottom 53 between inner wall part 46 and rear sidewall portion 43, and be formed with the inclination partitioned portion 53c that is the inclination partitioned portion 53b that separates on the shape ground that has a down dip and is the shape ground separation that has a down dip from the left end of partitioned portion 53a to rear portion side wall portion 43 sides to inner wall part 46 sides from the right-hand end of partitioned portion 53a.
Next door, bottom 53 is engaged in next door, top 49 through Vibration Welding, forms the partition wall that first separation chamber and second separation chamber adjacent with this first separation chamber are separated.When carrying out Vibration Welding,, therefore can prevent to weld rib 49d and flow out in the separation chamber because the welding rib 49d in the next door, top 49 after the fusion is accommodated among a plurality of recess 49e.
On next door, bottom 53, be formed with the throttling passage 53d of the tubular that first separation chamber and the second adjacent separation chamber are communicated with.Extend along the bank of cylinder orthogonal direction position that throttling passage 53d forms between inclination partitioned portion 53b and inclination partitioned portion 53c; The opening of its first separation chamber's side is at the upper position opening, and the opening of its second separation chamber's side is at the lower position opening lower than upper position.The opening surface of second separation chamber's side of throttling passage 53d is formed at the reentrant part 52e in the plat part 52 to being recessed into.
The next door, bottom 54 on right side is outstanding to the top from plat part 52, forms and overlooks roughly crank shape.The bigger partitioned portion 54a of height dimension that extends along the bank of cylinder direction in the neutral position that has on the next door, bottom 54 between inner wall part 46 and rear sidewall portion 43, and be formed with the inclination partitioned portion 54c that is the inclination partitioned portion 54b that separates on the shape ground that has a down dip and is the shape ground separation that has a down dip from the left end of partitioned portion 54a to rear portion side wall portion 43 sides to inner wall part 46 sides from the right-hand end of partitioned portion 54a.
Next door, bottom 54 is engaged in next door, top 50 through Vibration Welding, forms the partition wall that second separation chamber and three separation chamber adjacent with this second separation chamber are separated.When carrying out Vibration Welding,, therefore can prevent to weld rib 50d and flow out in the separation chamber because the welding rib 50d in the next door, top 50 after the fusion is accommodated among a plurality of recess 50e.
Shown in figure 13, on next door, bottom 54, likewise be formed with the throttling passage 54d of the tubular that second separation chamber and the 3rd adjacent separation chamber are communicated with next door, bottom 53.Extend along the bank of cylinder orthogonal direction position that throttling passage 54d forms between inclination partitioned portion 54b and inclination partitioned portion 54c; The opening of its second separation chamber's side is at the upper position opening, and the opening of its 3rd separation chamber's side is at the lower position opening lower than upper position.The opening surface of the 3rd separation chamber's side of throttling passage 54d is formed at the reentrant part 52f in the plat part 52 to being recessed into.
Like Figure 10～shown in Figure 12, gas importing portion 55 forms roughly " コ " shape of section, on the bank of cylinder direction, is arranged on the forward position in next door, bottom 54.The bottom of gas importing portion 55 is near the rear end part that is set to central top wall portion 23 is extended in the front lower place skewedly from the front end of plat part 52.Supplemental wall portion 56 is formed at second separation chamber's middle body and the 3rd separation chamber's middle body with the upper surface from plat part 52 respectively to the outstanding mode in top.These supplemental wall portions 56 are provided with the flow direction of the blowby gas that flows along the bank of cylinder direction in opposite directions.
Backflow action in the face of blowby gas describes down.
At the load of motor 1 is full load state or roughly under the full load state, owing to do not produce negative pressure in the throttler valve downstream, therefore above-mentioned sub load is closed with the PCV valve of oil separating device for high load.At this moment, because of induction air flow ratio comparatively fast produces lower negative pressure in the upstream portion of throttler valve, or because of the pressure rising takes place in the increase of the blowby gas in the crankcase, thereby between open communication portion 45 and throttler valve upstream side gas-entered passageway, produce pressure difference.Thus, the blowby gas in the crankcase imports to the oil separation space of oil separator 40 from gas importing portion 55 via the exhaust system valve gear housing.
The blowby gas that imports is through being directed to first separation chamber by top top wall portion 41, anterior side wall portion 42, inner wall part 46 and plat part 52 formed introduction channels.In first separation chamber, blowby gas and supplemental wall portion 51 or the partition wall that is formed by next door, top 49 and next door, bottom 53 bump, thereby contained oil formulation adheres to, separates in the blowby gas.
The blowby gas of first separation chamber moves to second separation chamber through throttling passage 53d.Among this throttling passage 53d, owing to channel cross-section narrows, so the flow velocity of blowby gas increases and the liquefaction of promotion oil formulation.In second separation chamber, blowby gas and supplemental wall portion 51,56 or the partition wall that is formed by next door, top 50 and next door, bottom 54 bump, thereby contained oil formulation adheres to, separates in the blowby gas.The oil formulation that separates from blowby gas is stored in the reentrant part 52e.
The blowby gas of second separation chamber moves to the 3rd separation chamber through throttling passage 54d.Among this throttling passage 54d, with throttling passage 53d likewise because channel cross-section narrows, so the flow velocity of blowby gas increases and promotes the liquefaction of oil formulation.
In the 3rd separation chamber, blowby gas and supplemental wall portion 51,56 bump, thereby contained oil formulation adheres to, separates in the blowby gas.The oil formulation that separates from blowby gas is stored in the reentrant part 52f.The blowby gas that in the 3rd separation chamber, has separated oil formulation is back in the gas-entered passageway at the throttler valve upper reaches.
On the other hand, be under the part load condition of low-load at the load of motor 1, because of the PCV valve is opened in the increase of air-intake negative-pressure, thereby in crankcase, produce bigger negative pressure.This lower negative pressure acts on the oil separation space of oil separator 40 through gas importing portion 55.Thus, the oil formulation that is stored among the reentrant part 52f moves and is stored among the reentrant part 52e to second separation chamber through throttling passage 54d.And then the oil formulation that is stored among the reentrant part 52e moves to first separation chamber through throttling passage 53d.The oil formulation that moves in first separation chamber is directed into the bottom surface sections 52d of the shape that has a down dip and turns back to crankcase via the exhaust system valve gear housing.
In addition, when motor 1 was part load condition, the PCV valve carried out opening action, and blowby gas is back to the downstream part of throttler valve with oil separating device via sub load.
Below, effect, the effect of the oil separating device of the related motor of embodiment 1 described.
Said oil separating device has the oil separator 40 of the motor 1 that possesses oil separation space; This oil separation space slenderly is formed on along the bank of cylinder direction in the plastic valve mechanism cover 20 on top of cylinder head 3 of covering engine 1, and contained oil formulation in the separable blowby gas.
This oil separator 40 comprises: top top wall portion 41; Be the top top wall portion of the width of bank of cylinder orthogonal direction, and form the part of the top wall portion of valve mechanism cover 20 less than the width (width of the top wall portion of valve mechanism cover 20) till from the front end of the second anterior top wall portion 29 of valve mechanism cover 20 to the rearward end of the second rear portion top wall portion 30; Become a pair of anterior side wall portion 42 and rear sidewall portion 43, extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion 41 from top respectively; Bottom wall portion 44 is linked to the lower end of a pair of anterior side wall portion 42 of this one-tenth and rear sidewall portion 43, and the lower end of oil separation space is separated; Wherein, This becomes a pair of anterior side wall portion 42 and rear sidewall portion 43 respectively at the above-below direction middle section position, promptly than top top wall portion 41 more below and more be linked to the second anterior top wall portion 29 and the second rear portion top wall portion 30 of valve mechanism cover 20 in the top position than bottom wall portion 44.
According to this oil separating device; Because anterior side wall portion 42 that the one-tenth that extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion 41 from top is a pair of and rear sidewall portion 43 are linked to valve mechanism cover 20 respectively at the above-below direction middle section position the second anterior top wall portion 29 and the second rear portion top wall portion 30; Therefore; Utilize valve mechanism cover 20 inside can form oil separation space; Do not cause motor 1 height overall (whole height of motor 1) to increase the volume that just can guarantee oil separation space, the separating property that can guarantee to separate oil formulation contained in the blowby gas.
In addition; Owing to can shorten the distance between the center of gravity of oil separation space and the top wall portion of valve mechanism cover 20 (the second anterior top wall portion 29 and the second rear portion top wall portion 30); And can dwindle the planar part of the top wall portion of valve mechanism cover 20; Therefore; The vibration of oil separation space can be suppressed, thereby the second anterior top wall portion 29 of the valve mechanism cover 20 that the vibration by oil separation space causes can be suppressed and the film vibration of the second rear portion top wall portion 30 can suppress the vibrating noise to external radiant with respect to the top wall portion of valve mechanism cover 20.
In addition, owing to become a pair of anterior side wall portion 42 and the lower end of rear sidewall portion 43 to utilize Vibration Welding to be connected in bottom wall portion 44, therefore, do not increase part count and just can easily this be become a pair of anterior side wall portion 42 and rear sidewall portion 43 and bottom wall portion 44 welding.In addition; Because anterior side wall portion 42 that this one-tenth is a pair of and rear sidewall portion 43 are linked to valve mechanism cover 20 at the above-below direction middle section position the second anterior top wall portion 29 and the second rear portion top wall portion 30; Therefore; Can shorten and be positioned at than the second anterior top wall portion 29 and the second rear portion the top wall portion 30 more anterior side wall portion 42 of lower position and the length of rear sidewall portion 43; The thickness that need not unnecessarily increase anterior side wall portion 42 and rear sidewall portion 43 just can be guaranteed rigidity, and can use press tool etc. to carry out Vibration Welding.
In addition; Because oil separation space comprises a plurality of that is first～the 3rd oil separation chamber and two the throttling passage 53d, the 54d that are communicated with adjacent oil separation chamber; Therefore, utilize the swelling of blowby gas can increase flow velocity, thereby can improve the separating property of separating oil formulation contained in the blowby gas.
In addition; Owing to be positioned at the above-below direction middle section position (promptly with bolt assembly department 34 corresponding part parts in addition in the linking department that the second anterior top wall portion 29 of anterior side wall portion 42 and valve mechanism cover 20 connects; Than top top wall portion 41 more the below and than bottom wall portion 33 top more), be positioned at the bolt assembly department 34 part different height position (lower position) in addition with this linking department with bolt assembly department 34 corresponding parts in the linking department that the second anterior top wall portion 29 of anterior side wall portion 42 and valve mechanism cover 20 connects.Thus, can dwindle the planar part of the second anterior top wall portion 29 of valve mechanism cover 20, and can form the jump part along the bank of cylinder direction.Therefore, can suppress the vibration of separator 40, suppress vibrating noise to external radiant with respect to the second anterior top wall portion 29 of valve mechanism cover 20.
In addition; Because the inner wall part 46 that extends downwards from the top top wall portion 41 of valve mechanism cover 20 likewise forms waveform along the bank of cylinder direction with anterior side wall portion 42; Therefore, when carrying out, help preventing to collapse, need not unnecessarily increase wall thickness with bottom wall portion 44 pressurization welding.
Below, the variation that gets partly changing said embodiment describes.
1) among the said embodiment; Explained and the oil separation chamber of oil separation space has been provided with three example; But as long as possess at least can be from blowby gas the oil separation space of separated oil composition, also can be an oil separation chamber, four above oil separation chambers also can be set in addition.
2) among the said embodiment, the example that three oil separation chambers is set and two throttling passages are set has been described, as long as but be at least the structure that increases the blowby gas velocity, for example also can separate requiring to be provided with a throttling passage according to oil.When the oil separation is had relatively high expectations, for example also can form four above oil separation chambers, three above throttling passages are set.
3) among the said embodiment; Explained that the linking department that the anterior side wall portion and the second anterior top wall portion are connected forms the example that is positioned at the linking department of the height and position lower than in addition part with the corresponding part of bolt assembly department, but also can make the rear sidewall portion and the linking department of the second rear portion top wall portion connection form the different linking department of height and position of part.In addition, the two forms the different linking department of height and position of part also can to make linking department that linking department that the anterior side wall portion and the second anterior top wall portion connect and rear sidewall portion be connected with the second rear portion top wall portion.In addition, also can make anterior side wall portion form the different linking department of height and position with the linking department that the second anterior top wall portion connects.
4) among the said embodiment; The example that Vibration Welding is given by bottom wall portion and anterior side wall portion and rear sidewall portion has been described; As long as but be at least can form can be from blowby gas the oil separation space of separated oil, joint method can suitably be selected, and also can adopt ultrasonic welding.
5) in addition, so long as personnel in the industry, be the purport ground that can not break away from the utility model so that the form of the additional various changes of said embodiment is implemented, the utility model also comprises this type of change form.
The summary of the utility model:
The oil separating device of the motor of the utility model is used for separating the oil formulation that this blowby gas contains from blowby gas; Said oil separating device possesses oil separation space; This oil separation space slenderly is formed in the valve mechanism cover that the cylinder upper part of the cover synthetic resin of covering engine processes along the bank of cylinder direction; Said oil separating device is characterised in that and comprises: the top top wall portion; Be the wall of the width of bank of cylinder orthogonal direction, with the part of the top wall portion of said valve mechanism cover and form less than the upside of the width of the top wall portion of said valve mechanism cover; Pair of sidewalls portion, extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top; Bottom wall portion is linked to the lower end of said pair of sidewalls portion, and the lower end of said oil separation space is separated; Wherein, said pair of sidewalls portion than said top top wall portion more below and than said bottom wall portion more the top wall portion of top position and said valve mechanism cover link.
In the oil separating device of this motor; Because the pair of sidewalls portion that extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top at the above-below direction middle section position (promptly; Than said top top wall portion more the below and than said bottom wall portion top position more) be linked to the top wall portion of valve mechanism cover; Therefore; Utilize valve mechanism cover inside can form oil separation space, do not cause the increase of motor height overall just can guarantee the volume of oil separation space, and can shorten the distance between the top wall portion of center of gravity and valve mechanism cover of oil separation space.
According to said structure; Because the pair of sidewalls portion that extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top is connected in the top wall portion of valve mechanism cover at the above-below direction middle section position; Therefore; Utilize valve mechanism cover inside can form oil separation space, need not to increase the volume that motor height overall (whole height of motor) just can be guaranteed oil separation space, the separating property that can guarantee to separate oil formulation contained in the blowby gas.In addition; Owing to can shorten the distance between the top wall portion of center of gravity and valve mechanism cover of oil separation space and can dwindle the planar part of the top wall portion of valve mechanism cover; Therefore; Can suppress the vibration of oil separation space with respect to the top wall portion of valve mechanism cover, can suppress the valve mechanism cover that the vibration by oil separation space causes top wall portion the film vibration and suppress vibrating noise to external radiant.
In the utility model, the lower end that comparatively it is desirable to said pair of sidewalls portion is connected in said bottom wall portion through Vibration Welding.
According to said structure, because the lower end of pair of sidewalls portion utilizes Vibration Welding to be connected in bottom wall portion, therefore, not increasing part count just can be easily with pair of sidewalls portion and bottom wall portion welding.In addition; Because pair of sidewalls portion is connected in the top wall portion of valve mechanism cover at the above-below direction middle section position; Therefore; Can shorten and be positioned at than the top wall portion length of the side wall portion of lower position more, the thickness that need not unnecessarily increase side wall portion just can be guaranteed rigidity, and press tool capable of using etc. carries out Vibration Welding.
In addition, in the utility model, comparatively it is desirable to said oil separation space and comprise: a plurality of oil separation chambers; And the one or more throttling passages that are communicated with adjacent oil separation chamber.
According to said structure, utilize the swelling of blowby gas can improve the oil separation performance of separating oil formulation contained in the blowby gas.
In addition; In the utility model; A part that comparatively it is desirable to the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at than said top top wall portion below and than the said bottom wall portion above-below direction middle section position of top (being called first height) more more, and the remaining part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at and said above-below direction middle section position (said first height and position) different height position.
According to said structure; Because side wall portion is different each other on the bank of cylinder direction with the height and position of the linking department that the top wall portion of valve mechanism cover connects; Therefore, can dwindle valve mechanism cover top wall portion planar part and can on the bank of cylinder direction, form the jump part, thus; Can suppress the vibration of oil separation space, suppress vibrating noise to external radiant with respect to the top wall portion of valve mechanism cover.
Utilize possibility on the industry
The utility model is a kind of oil separating device that is formed on the motor of the oil separation space in the valve mechanism cover along the bank of cylinder direction that possesses; Wherein, Through making the pair of sidewalls portion that forms oil separation space be linked to the top wall portion of valve mechanism cover at the above-below direction middle section position; Thereby do not cause the increase of motor height overall can guarantee that just oil separates performance, suppresses the vibrating noise to external radiant.
Claims (6)
1. the oil separating device of a motor; Be used for separating the oil formulation that this blowby gas contains from blowby gas; Said oil separating device possesses oil separation space; This oil separation space slenderly is formed in the valve mechanism cover that the cylinder upper part of the cover synthetic resin of covering engine processes along the bank of cylinder direction, and said oil separating device is characterised in that and comprises:
The top top wall portion is the wall of the width of bank of cylinder orthogonal direction less than the upside of the width of the top wall portion of said valve mechanism cover, with the part of the top wall portion of said valve mechanism cover and form;
Pair of sidewalls portion, extend downwards at the two end part of the bank of cylinder orthogonal direction of top wall portion from said top;
Bottom wall portion is linked to the lower end of said pair of sidewalls portion, and the lower end of said oil separation space is separated; Wherein,
Said pair of sidewalls portion than said top top wall portion more below and than said bottom wall portion more the top wall portion of top position and said valve mechanism cover link.
2. the oil separating device of motor according to claim 1 is characterized in that:
The lower end of said pair of sidewalls portion is connected in said bottom wall portion through Vibration Welding.
3. the oil separating device of motor according to claim 1 and 2 is characterized in that:
Said oil separation space comprises: a plurality of oil separation chambers; And the one or more throttling passages that are communicated with adjacent oil separation chamber.
4. the oil separating device of motor according to claim 1 is characterized in that:
The part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at than said top top wall portion below and than said bottom wall portion first height of top more more,
The remaining part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at and the said first height different height position.
5. the oil separating device of motor according to claim 2 is characterized in that:
The part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at than said top top wall portion below and than said bottom wall portion first height of top more more,
The remaining part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at and the said first height different height position.
6. the oil separating device of motor according to claim 3 is characterized in that:
The part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at than said top top wall portion below and than said bottom wall portion first height of top more more,
The remaining part of the linking department that at least one side wall portion is connected with the top wall portion of said valve mechanism cover in the said pair of sidewalls portion is positioned at and the said first height different height position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-129635 | 2010-06-07 | ||
| JP2010129635A JP2011256731A (en) | 2010-06-07 | 2010-06-07 | Oil separating device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100298U true CN202100298U (en) | 2012-01-04 |
Family
ID=44974272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201982292U Expired - Fee Related CN202100298U (en) | 2010-06-07 | 2011-06-03 | Oil separating device of engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2011256731A (en) |
| CN (1) | CN202100298U (en) |
| DE (1) | DE202011101502U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051127A (en) * | 2016-07-28 | 2016-10-26 | 北京新能源汽车股份有限公司 | Reducer shell |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6146202B2 (en) * | 2013-08-22 | 2017-06-14 | トヨタ紡織株式会社 | Oil mist separator |
| JP7091808B2 (en) | 2018-04-24 | 2022-06-28 | トヨタ自動車株式会社 | Cylinder head cover |
| JP7253486B2 (en) * | 2019-12-31 | 2023-04-06 | 株式会社クボタ | industrial engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0313523Y2 (en) * | 1986-01-24 | 1991-03-27 | ||
| JP2532890Y2 (en) * | 1991-08-14 | 1997-04-16 | ダイハツ工業株式会社 | Gas-liquid separator for blow-by gas |
| JPH064311U (en) * | 1992-06-26 | 1994-01-21 | 株式会社クボタ | Engine breather device |
| JP2004162625A (en) | 2002-11-14 | 2004-06-10 | Mahle Tennex Corp | Oil separator of blow-by gas reflux system |
| JP4978369B2 (en) * | 2007-08-23 | 2012-07-18 | マツダ株式会社 | Engine oil separator |
-
2010
- 2010-06-07 JP JP2010129635A patent/JP2011256731A/en active Pending
-
2011
- 2011-06-03 DE DE201120101502 patent/DE202011101502U1/en not_active Expired - Lifetime
- 2011-06-03 CN CN2011201982292U patent/CN202100298U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051127A (en) * | 2016-07-28 | 2016-10-26 | 北京新能源汽车股份有限公司 | Reducer shell |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011256731A (en) | 2011-12-22 |
| DE202011101502U1 (en) | 2011-10-20 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140603 |