CN103174560A

CN103174560A - Inlet manifold

Info

Publication number: CN103174560A
Application number: CN2012105678074A
Authority: CN
Inventors: 茂吕田健二郎; 野口知之; 村上健; 楠田贤士; 谷川裕纪; 别所崇
Original assignee: Aisan Industry Co Ltd; Toyota Motor Corp
Current assignee: Aisan Industry Co Ltd; Toyota Motor Corp
Priority date: 2011-12-26
Filing date: 2012-12-24
Publication date: 2013-06-26
Anticipated expiration: 2032-12-24
Also published as: DE102012024535B4; CN103174560B; DE102012024535A1; JP2013133723A; JP5814106B2

Abstract

The invention discloses an inlet manifold (100), including a jar mixing gas inlet (2) and a negative pressure jar outlet (3). Jar mixing gas is guided through the jar mixing gas inlet (2); the negative pressure jar outlet (3) is communicated with a brake promoter; the inlet manifold (100) further includes a first adjustment member (41); the first adjustment member (41) preventes the jar mixing gas flowing in through the jar mixing gas inlet (2) from reaching the negative pressure jar outlet (3) (indicating a negative pressure jar outlet 31 more accurately); and the first adjustment member (41) is extended along the gas flowing into a surge adjustment groove (4).

Description

Intake manifold

Technical field

The present invention relates to a kind of intake manifold that comprises blow-by gas entrance and negative pressure outlet, blow-by gas imports by described blow-by gas entrance, and described negative pressure outlet is communicated with Brake booster.

Background technique

Usually, intake manifold comprises blow-by gas entrance and negative pressure outlet, and the blow-by gas that produces in motor imports by described blow-by gas entrance, and negative pressure exports by negative pressure and is supplied to Brake booster, pressure switch etc.

Disclose the air inlet system of internal-combustion engine, it is included in partition wall between the outlet of blow-by gas entrance and negative pressure (with reference to Japanese Patent Application Publication No. 2003-254178 (JP 2003-254178A)).Be used herein in the air inlet system of internal-combustion engine, partition wall can stop the blow-by gas that flows into by the blow-by gas entrance to arrive the negative pressure outlet.So, can prevent that the moisture in blow-by gas from freezing and blocking negative pressure to export.

Yet disclosed air inlet system for internal-combustion engine in JP 2003-254178A is because the divided wall of the stream of the air inlet from the throttle-valve body to the engine compartment disturbs, so the pressure loss occurs.

Summary of the invention

The invention provides a kind of not interference intake stream and prevent the intake manifold that the negative pressure outlet gets clogged.

A scheme of the present invention relates to a kind of intake manifold, and it comprises blow-by gas entrance and negative pressure outlet, and blow-by gas imports by described blow-by gas entrance, and described negative pressure outlet is communicated with Brake booster.Described intake manifold comprises that first adjusts member, and described first adjusts member stops described blow-by gas to arrive described negative pressure outlet.Described first adjusts member stretches along the curtain coating of the air inlet that flows into described intake manifold.

According to the intake manifold with above-mentioned structure, because the first adjustment member stops blow-by gas to arrive the negative pressure outlet, so can prevent that the negative pressure outlet from getting clogged.In addition, because first adjust member and stretch along the curtain coating that flows to the air inlet of intake manifold, so the stream of air inlet is not subjected to first to adjust member and disturb.

In the intake manifold according to such scheme, described negative pressure outlet can be arranged on the downstream with respect to the described blow-by gas entrance of the described stream of described air inlet.

According to the intake manifold with above-mentioned structure, because negative pressure outlet is arranged on the downstream with respect to the blow-by gas entrance of the stream of air inlet, so can stably extract negative pressure out from the negative pressure outlet.In addition, because the blow-by gas entrance is arranged on the upstream side with respect to the stream of air inlet, so the blow-by gas that flows into by the blow-by gas entrance can roughly be transported to cylinder equably.

In the intake manifold according to such scheme, described first to adjust member can be the plate element that the zone that will be formed with described blow-by gas entrance and the region separation that is formed with described negative pressure outlet are opened.

According to the intake manifold with above-mentioned structure, because first to adjust member be the plate element that the zone that will be formed with the blow-by gas entrance and the region separation that is formed with the negative pressure outlet are opened, have first of simple structure and adjust member so can provide.

In the intake manifold according to such scheme, the described first cardinal extremity of adjusting member can be connected on the wall surface near the position of the position that is formed with described negative pressure outlet, and described first adjusts member and can protrude through in the stream of described air inlet.

According to the intake manifold with above-mentioned structure, because the first cardinal extremity of adjusting member is connected on the wall surface near the position of the position that is formed with the negative pressure outlet, and first adjust member and can protrude through in the stream of air inlet.So the part that is connected with the first adjustment member of intake manifold has the rigidity of raising.

In the intake manifold according to such scheme, can adjust in described negative pressure outlet and described first the second adjustment member is set between member, described second adjusts member stops described blow-by gas to arrive described negative pressure outlet.

According to the intake manifold with above-mentioned structure, negative pressure exports and first the second adjustment member of adjusting between member stops blow-by gas arrival negative pressure to export because be arranged on, so can prevent reliably that the negative pressure outlet from getting clogged.

In the intake manifold according to such scheme, described second to adjust member can be the board member that extends on the upstream side with respect to the position that is provided with described negative pressure outlet of the described stream of described air inlet.

According to the intake manifold with above-mentioned structure, because second to adjust member be the board member that extends on the upstream side with respect to the position that is provided with the negative pressure outlet of the described stream of described air inlet, have second of simple structure and adjust member so can provide.

In the intake manifold according to such scheme, can arrange near described blow-by gas entrance and flow into the prevention member, and described inflow stops member can stop the moisture in the described blow-by gas that flows into by described blow-by gas entrance to flow in the described stream of described air inlet.

According to the intake manifold with above-mentioned structure, near the inflow that is arranged on the blow-by gas entrance stops member to stop the moisture in the blow-by gas that flows into by the blow-by gas entrance to flow in the stream of air inlet.So, can stop reliably the negative pressure outlet to get clogged.

In the intake manifold according to such scheme, it can be following wall member that described inflow stops member: it is arranged on downstream side with respect to the stream of the described blow-by gas that flows into by described blow-by gas entrance, and described wall member with the direction of the perpendicular direction of the described stream of described blow-by gas on extend.

According to the intake manifold with above-mentioned structure, flow into to stop member be arranged on respect on the downstream side of the stream of the blow-by gas that flows into by the blow-by gas entrance and with the upwardly extending wall member in side of the perpendicular direction of the stream of blow-by gas.So, can provide the inflow with simple structure to stop member.

According to the intake manifold of such scheme of the present invention, because the first adjustment member stops blow-by gas to arrive the negative pressure outlet, so can prevent that the negative pressure outlet from getting clogged.In addition, because first adjust member and stretch along the curtain coating of the air inlet that flows into described intake manifold, so the stream of air inlet is not subjected to first to adjust member and disturb.

Description of drawings

Feature of the present invention, advantage and industrial technology meaning are described in the detailed description of exemplary embodiment of the present invention below with reference to accompanying drawings, and in accompanying drawing, similar reference character represents similar element, and wherein:

Fig. 1 is the front elevation that illustrates according to the example of intake manifold of the present invention;

Fig. 2 is the tectonic maps that illustrates the example of the mode that the blow-by gas entrance shown in Fig. 1 is connected with motor;

Fig. 3 illustrates the tectonic maps that the negative pressure shown in Fig. 1 exports the example of the mode that is connected with Brake booster;

Fig. 4 A and Fig. 4 B are the side views of the intake manifold shown in Fig. 1;

Fig. 5 is the rear view of the intake manifold shown in Fig. 1;

Fig. 6 is the sectional view along the VI-VI line in Fig. 4 B of intake manifold;

Fig. 7 is the sectional view along the VII-VII line in Fig. 1 of intake manifold;

Fig. 8 is the sectional view along the VIII-VIII line in Fig. 5 of intake manifold;

Fig. 9 is the sectional view along the IX-IX line in Fig. 5 of intake manifold;

Figure 10 is illustrated in the sectional view of adjusting the example of member in Fig. 6 along interpolation in the sectional view of VI-VI line second; And

Figure 11 is the figure along the example of the section of the XI-XI line of Fig. 6 that intake manifold is shown.

Embodiment

With reference to the accompanying drawings intake manifold 100 according to an embodiment of the invention is described.

(total structure of intake manifold) at first describes total structure according to intake manifold of the present invention with reference to Fig. 1 and Fig. 5.Fig. 1 is the front elevation that illustrates according to the example of intake manifold 100 of the present invention.Fig. 5 is the rear view of intake manifold 100 shown in Figure 1.As Fig. 1 and shown in Figure 5, intake manifold 100 comprises air inlet introduction part 10, gas-entered passageway forming portion 1, blow-by gas entrance 2, negative pressure outlet 3 and surge tank section 4.

Air inlet introduction part 10 is a kind of like this openings: by throttle valve 64(with reference to Fig. 2) air inlet supplied with flows into surge tank section 4 by described opening.

Gas-entered passageway forming portion 1 is a kind of like this inlet air pathway: the air inlet that sucks by air inlet introduction part 10 via the surge tank 4(of section with reference to Fig. 5) be supplied to motor 6 by described inlet air pathway.In this embodiment, because motor 6 comprises four cylinders (cylinder A is to D) (with reference to Fig. 3), so gas-entered passageway forming portion 1 comprises gas-entered passageway forming portion 1A to 1D, air inlet is supplied to respectively the cylinder A of motor 6 to D by gas-entered passageway forming portion 1A to 1D.

Blow-by gas entrance 2 is a kind of like this openings: the blow-by gas that produces in motor 6 is directed to the surge tank 4(of section of intake manifold 100 with reference to Fig. 5 by described opening) in.With reference to Fig. 2, the mode that blow-by gas entrance 2 is connected with motor 6 is described after a while.Term as used herein " blow-by gas " refers to piston 6b(by for example motor 6 with reference to Fig. 2) and cylinder between the unburned air and fuel mixture of clearance leakage.

Negative pressure outlet 3 is openings of negative suction, and negative pressure is fed into Brake booster 72(with reference to Fig. 3).With reference to Fig. 3, negative pressure outlet 3 modes that are connected with Brake booster 72 are described after a while.Although describe in this embodiment negative pressure outlet 3 situations about being connected with Brake booster 72, negative pressure outlet 3 can be connected with pressure switch or negative pressure pump.

Surge tank section 4 is as the groove of temporary transient storage by the air inlet of air inlet introduction part 10 suctions.The air inlet that is stored in surge tank section 4 is supplied in the cylinder (cylinder A is to D) of motor 6 via gas-entered passageway forming portion 1.

Next describe the structure of motor 6 and blow-by gas is fed to the path of blow-by gas entrance 2 from motor 6 with reference to Fig. 2.Fig. 2 is the tectonic maps that illustrates the example of the mode that the blow-by gas entrance 2 shown in Fig. 1 is connected with motor 6.

(motor) at first describes the structure of motor 6 with reference to Fig. 2.Motor 6 is multi cylinder (in this embodiment for four-cylinder) petrol engines for example, and comprises the piston 6b that forms firing chamber 6a and as the bent axle 65 of output shaft.Each piston 6b is attached to bent axle 65 via connecting rod 66.Convert the to-and-fro motion of piston 6b to bent axle 65 rotatablely move by connecting rod 66.

Be provided with spark plug 63 in the 6a of each firing chamber of motor 6.Adjusted the ignition timing of spark plug 63 by the igniter (not shown).Gas-entered passageway and exhaust passage are connected to each firing chamber 6a of motor 6.Between each gas-entered passageway and corresponding firing chamber 6a, suction valve 61 is set.Allow and interrupt being communicated with between gas-entered passageway and firing chamber 6a by the opening and closing of suction valve 61.Between each exhaust passage and corresponding firing chamber 6a, outlet valve 62 is set.Allow and interrupt being communicated with between exhaust passage and firing chamber 6a by the opening and closing of outlet valve 62.

Motor 6 has the gas-entered passageway that is provided with throttle valve 64 grades.Throttle valve 64 is adjusted the air inflow that enters motor 6.Sparger (Fuelinjection nozzle) 67 is set in each aforementioned gas-entered passageway.By petrolift, fuel (being in this embodiment gasoline) is fed to sparger 67 from fuel pot, and is injected fuel in gas-entered passageway by sparger 67.Fuel through spraying mixes to form air and fuel mixture with air inlet, air and fuel mixture is directed in the firing chamber 6a of motor 6.The air and fuel mixture (fuel+air) that has been directed in the 6a of firing chamber is lighted and is burnt by spark plug 63.Lighted in the 6a of firing chamber when air and fuel mixture and when burning, piston 6b to-and-fro motion on the above-below direction of accompanying drawing, rotary crankshaft 65 thus.

(blow-by gas entrance) next described and blow-by gas is fed to the path of blow-by gas entrance 2 from motor 6.On the top of motor 6 (namely on the cylinder head that forms on cylinder block 6c shown in Figure 2), end cap 68 is set.The unburned air and fuel mixture that will leak from firing chamber 6a for example, i.e. " blow-by gas " is stored in the blow-by gas chamber that is formed in end cap 68.

In blow-by gas chamber in end cap 68, PCV valve 8 is set, and the blow-by gas that discharges from PCV valve 8 is fed to the blow-by gas entrance 2 of intake manifold 100 by blowby gas passage 81.

PCV(Positive Crankcase Ventilation, positive crankcase ventilation (PCV)) valve 8 is the valves that act as the differential pressure operating valve that operates according to the differential pressure between the downstream side of the upstream side of blowby gas passage 81 and blowby gas passage 81, the upstream side of wherein said blowby gas passage 81 is the inside (blow-by gas chamber) of end cap 68, and the downstream side of described blowby gas passage 81 is the part along the downstream of the direction of the inlet stream inside of as shown in Figure 5 surge tank section 4 (in this embodiment for) of throttle valve 64.In other words, adjusted the flow that turns back to the blow-by gas in air inlet by blowby gas passage 81 according to differential pressure by PCV valve 8.

(negative pressure outlet) next describes negative pressure outlet 3 modes that are connected with Brake booster 72 with reference to Fig. 3.Fig. 3 is the tectonic maps that illustrates the example of negative pressure outlet 3 modes that are connected with Brake booster 72 shown in Figure 1.At first, the structure of braking system 7 is described with reference to Fig. 3.Braking system 7 comprises brake petal 71, Brake booster (negative-pressure operation device) 72, master cylinder 73, one-way valve 74 etc.

Brake petal 71 is to press down pedal so that vehicle is braked by the driver, and brake petal 71 is attached to the input bar (not shown) of Brake booster 72.Brake booster 72 is produce to the proportional auxiliary force of pedal depression power that is applied to brake petal 71 and comprise the device that is arranged on the negative pressure chamber's (not shown) on master cylinder 73 sides.

Brake booster 72 comprises the take-off lever of the input shaft that is attached to master cylinder 73.Master cylinder 73 produces hydraulic pressure according to the active force from the Brake booster 72 that receives pedal depression power and auxiliary force.Master cylinder 73 is attached to the wheel cylinder in the disk type braker mechanism of wheel via oil hydraulic circuit, and each wheel cylinder uses hydraulic pressure from master cylinder 73 to produce braking force.

Be connected to the negative pressure chamber of Brake booster 72 with the negative pressure of the intake manifold 100 outlet 3 vacuum tube 3a that are communicated with, and at the joint place that is connected with negative pressure chamber of vacuum tube 3a, one-way valve 74 be set.As intake manifold 100(especially surge tank section 4) in the absolute value of negative pressure (intake pipe negative pressure) during greater than the negative pressure in the negative pressure chamber of Brake booster 72 (absolute value), one-way valve 74 is opened.So, accumulate negative pressure in the negative pressure chamber of Brake booster 72.

(first adjusts member) next describes the structure of intake manifold 100 with reference to Fig. 4 A and Fig. 4 B to Fig. 8.Fig. 4 A and Fig. 4 B are the side views of the intake manifold 100 shown in Fig. 1.Fig. 4 A is the left view of the intake manifold 100 shown in Fig. 1, and Fig. 4 B is the right elevation of the intake manifold 100 shown in Fig. 1.As shown in Fig. 4 A and Fig. 4 B, intake manifold 100 is by consisting of gas-entered passageway forming portion 1(the chances are the left side of Fig. 4 B center line VI-VI) resin molded product and the right side that consists of the surge tank 4(of section the chances are Fig. 4 B center line VI-VI) resin molded product engage and form.

Fig. 5 is the rear view of the intake manifold 100 shown in Fig. 1.As shown in Figure 5, the gas-entered passageway forming portion 1A that consists of gas-entered passageway forming portion 1 has respectively the motor joint 11A of elliposoidal to being referred to as " motor joint 11 " below 11D(to 1D), motor joint 11A is connected respectively to four cylinders (cylinder A is to D) of motor 6 to 11D.

Fig. 6 is the sectional view along VI-VI line in Fig. 4 B of intake manifold.Fig. 7 is the sectional view along the VII-VII line in Fig. 1 of intake manifold.As shown in Figure 6 and Figure 7, first adjust member 41 and extend from the inner wall surface of surge tank section 4.First adjusts member 41 stops the blow-by gas that flows out from blow-by gas entrance 2 to arrive negative pressure outlet 3.

Arrow V1 shown in Fig. 6 and V2 represent that inlet stream enters the direction of surge tank section 4.Arrow V1 represents to flow at a high speed the direction of the inlet stream of surge tank section 4, and arrow V2 represents that low speed flows into the direction of the inlet stream of surge tank section 4.Arrow V3 shown in Fig. 7 represents that inlet stream is from surge tank section 4 directions to gas-entered passageway forming portion 1.In addition, the stream that represents blow-by gas of the arrow W shown in Fig. 6 enters the direction of surge tank section 4 by the blow-by gas entrance.Because as shown in the arrow W in Fig. 6, first adjusts member 41 stops blow-by gas to arrive negative pressure outlet 3, so can prevent that negative pressure outlet 3 from getting clogged.

In addition, as shown in Figure 6 and Figure 7, form the blow-by gas opening 21 of blow-by gas entrance 2 and the negative pressure opening 31 of negative pressure outlet 3 in the inwall of surge tank section 4.

As shown in Figure 6, first adjust member 41 and extend along the inlet stream (being by the inlet stream shown in arrow V1 and V2 in Fig. 6) of the surge tank section 4 that flows into intake manifold 100.First to adjust member 41 be the spatial separation in surge tank section 4 to be shaped as blow-by gas entrance 2(more properly be blow-by gas opening 21) the zone and be formed with negative pressure outlet 3(and more properly be negative pressure opening 31) the plate element in zone.

In addition, as shown in Figure 6, negative pressure outlet 3(more properly is negative pressure opening 31) the blow-by gas entrance 2(that is arranged on respect to inlet stream more properly is blow-by gas opening 21) the downstream.

Because as mentioned above, first to adjust member 41 be more properly surge tank section 4 along flowing into intake manifold 100() inlet stream (that is, in Fig. 6 by the inlet stream shown in arrow V1 and V2) extend, so inlet stream is not subjected to first to adjust member 41 interference.

In addition, because as mentioned above, negative pressure outlet 3(more properly is negative pressure opening 31) the blow-by gas entrance 2(that is arranged on respect to inlet stream (being by the inlet stream shown in arrow V1 and V2 in Fig. 6) more properly is blow-by gas opening 21) the downstream, stably extract negative pressure out so can export 3 from negative pressure.In addition, because blow-by gas entrance 2(more properly is blow-by gas opening 21) be arranged on respect to inlet stream (namely, in Fig. 6 by the inlet stream shown in arrow V1 and V2) upstream side, so by blow-by gas entrance 2(more properly for blow-by gas opening 21) flow into the blow-by gas of surge tank section 4 and can be respectively roughly be transported to equably the cylinder (in this embodiment for cylinder A to D, with reference to Fig. 3) of motor 6 via gas-entered passageway forming portion 1A to 1D.

In addition, as mentioned above, first to adjust member 41 be more properly to be blow-by gas opening 21 with being formed with blow-by gas entrance 2() the zone (namely, in Fig. 6, in the first zone of adjusting below member 41) and to be formed with negative pressure outlet 3(be more properly negative pressure opening 31) the zone (namely, in Fig. 6, the zone above the first adjustment member 41) separated plate element.So, can provide the prevention blow-by gas with simple structure to arrive first of negative pressure outlet 3 and adjust member 41.

Although in this embodiment, first to adjust member 41 be more properly to be blow-by gas opening 21 with being formed with blow-by gas entrance 2() the zone and be formed with negative pressure outlet 3(and more properly be negative pressure opening 31) the plate element opened of region separation, but first to adjust member can be different forms.For example, first adjust member and can be formed in surge tank section 4 to stop blow-by gas to arrive the form of the board member of negative pressure outlet 3.In this case, first adjust member preferably along the inlet stream bending that flows into surge tank section 4 by air inlet introduction part 10.

Fig. 8 be intake manifold along the sectional view of the VIII-VIII line of Fig. 5, and Fig. 9 is that intake manifold is along the sectional view of the IX-IX line of Fig. 5.Fig. 8 is that the intake manifold shown in Fig. 5 is along the sectional view on the plane that comprises negative pressure outlet 3.Fig. 9 is that the intake manifold shown in Fig. 5 is along the sectional view on the plane of the blow-by gas opening 21 that comprises blow-by gas entrance 2.

In Fig. 8, section 12A is respectively that gas-entered passageway forming portion 1A is to the section along the VIII-VIII line of 1D to 12D.Similarly, in Fig. 9, section 13A is respectively that gas-entered passageway forming portion 1A is to the section along the IX-IX line of 1D to 13D.

As apparent from Fig. 5, Fig. 8 and Fig. 9, first adjusts member 41 is shaped as blow-by gas entrance 2(with the spatial separation in surge tank section 4 and more properly is blow-by gas opening 21) the zone (namely, zone shown in Fig. 9) and be formed with negative pressure outlet 3(and more properly be negative pressure opening 31) zone (that is, the zone shown in Fig. 8).

In addition, as shown in Figure 8, the first cardinal extremity of adjusting member 41 be connected to surge tank section 4 in the inner wall surface near the position of the position of the negative pressure opening 31 that is formed with negative pressure outlet 3, and first adjust in the stream that member 41 is projected into the air inlet in surge tank section 4.

Because as mentioned above, the first cardinal extremity of adjusting member 41 be connected to surge tank section 4 in the inner wall surface near the position of the position of the negative pressure opening 31 that is formed with negative pressure outlet 3, and first adjusts in the stream that member 41 is projected into the air inlet in surge tank section 4, so improved intake manifold 100 with the first rigidity of adjusting the part that member 41 is connected (that is the negative pressure that surge tank section 4, is set exports the part of 3 negative pressure opening 31).

Although in this embodiment, first adjusts in the stream that member 41 is projected into the air inlet in surge tank section 4, the first stream of adjusting the air inlet in component limit surge tank section 4 but the first two ends of adjusting member all can be connected to surge tank section 4.In this case, further improved the first rigidity of adjusting the part that member connects.

(second adjusts member) next described second with reference to Figure 10 and adjusted member 5.Figure 10 is illustrated in the sectional view of adjusting the example of member 5 in Fig. 6 along interpolation in the sectional view of VI-VI line second.Intake manifold 100A shown in Figure 10 adds to referring to figs. 1 through obtaining in the described intake manifold 100 of Fig. 9 by adjusting member 5 with second.

Second to adjust that member 5 stops be more properly blow-by gas opening 21 by blow-by gas entrance 2() to arrive negative pressure outlet 3(be more properly negative pressure opening 31 for the blow-by gas that flows into surge tank section 4).Second adjusts member 5 is arranged on negative pressure outlet 3(and more properly is negative pressure opening 31) and surge tank section 4 between.

In addition, second to adjust member 5 be more properly to be negative pressure opening 31 at the negative pressure outlet 3(that is provided with respect to the inlet stream in surge tank section 4 (Figure 10 to from right to left stream)) the upstream side of position on the board member that extends.Particularly, second to adjust member 5 be to extend to surround the board member in the zone (that is, being provided with the zone of upstream side of the position of negative pressure opening 31) of the upstream side of negative pressure opening 31 from the inner wall surface of surge tank section 4.As shown in figure 10, second part of adjusting member 5 more properly is negative pressure opening 31 at negative pressure outlet 3() with the first adjustment member 41 between the zone in extend.

Because as mentioned above, be more properly negative pressure opening 31 at negative pressure outlet 3() with first adjust second adjusting member 5 to stop blow-by gas to arrive negative pressure outlet 3(be more properly negative pressure opening 31 of arranging between member 41), so can prevent reliably that negative pressure from exporting 3 and getting clogged.

In addition, second to adjust member 5 be more properly to be negative pressure opening 31 at the negative pressure outlet 3(that is provided with respect to the inlet stream in surge tank section 4 (Figure 10 to from right to left stream)) the upstream side of position on the board member that extends.So, can provide the prevention blow-by gas with simple structure to arrive negative pressure outlet 3(and more properly be negative pressure opening 31) second adjust member 5.

Although in this embodiment, second to adjust member 5 be more properly to be negative pressure opening 31 at the negative pressure outlet 3(that is provided with respect to the inlet stream in surge tank section 4 (be Figure 10 to from right to left stream)) the upstream side of position on the board member that extends, but be more properly negative pressure opening 31 as long as it stops blow-by gas to arrive negative pressure outlet 3(), the second adjustment member can be any form.For example, second to adjust member can be to extend to surround the form of the Cylinder shape constructional element of negative pressure opening 31 from the inner wall surface of surge tank section 4.

(flow into and stop member) next described to flow into reference to Figure 11 and stoped member 211.Figure 11 illustrates intake manifold 100 along the figure of the example of the section of the XI-XI line of Fig. 6.Obtain the intake manifold 100B shown in Figure 11 by stoping member 211 to add to inflow in intake manifold 100 referring to figs. 1 through Fig. 9 description.

Figure 11 is the sectional view along the plane of the blow-by gas opening 21 that comprises blow-by gas entrance 2.As shown in figure 11, flow into to stop member 211 to be arranged on blow-by gas entrance 2(and more properly be blow-by gas opening 21) near.Flow into to stop member 211 to stop moisture in the blow-by gas that flows into by blow-by gas entrance 2 to flow in inlet stream in surge tank section 4 (Figure 10 to from right to left stream).

In addition, as shown in figure 11, flow into stoping member 211 is following wall members: it is arranged on downstream side with respect to the stream of the blow-by gas that pass through 2 inflows of blow-by gas entrance as shown in arrow V4 in Figure 11, and described wall member extends on the direction vertical with the direction (direction that the arrow V4 of Figure 11 is indicated) of the stream of blow-by gas.

Because as mentioned above, be arranged on blow-by gas entrance 2(more properly for blow-by gas opening 21) near inflow stop member 211, stop moisture in the blow-by gas that flows into by blow-by gas entrance 2 to flow in inlet stream in surge tank section 4, so can prevent more reliably that negative pressure outlet 3 from getting clogged.

In addition, flow into to stop member 211 to be arranged on downstream side with respect to the stream of the blow-by gas that pass through 2 inflows of blow-by gas entrance as shown in arrow V4 in Figure 11, and at the side upwardly extending wall member vertical with the direction (direction that the arrow V4 of Figure 11 is indicated) of the stream of blow-by gas.So the inflow that can provide moisture in the prevention blow-by gas with simple structure to flow in inlet stream in surge tank section 4 stops member 211.In other words because when blow-by gas when flow into stoping member 211 collision, the moisture in blow-by gas is left in blow-by gas entrance 2, so stop moisture in blow-by gas to flow in surge tank section 4.

Although in this embodiment, flow into to stop member 211 be with the upper wall member that extends of direction (direction that the arrow V4 of Figure 11 is indicated) of the perpendicular direction of the stream of blow-by gas, but as long as it stops moisture in blow-by gas to flow in inlet stream in surge tank section 4, flow into that to stop member can be any form.For example, flow into the prevention member and can comprise the filter of removing the moisture in the blow-by gas that flows into by blow-by gas entrance 2.

(other embodiments) is although in this embodiment, blow-by gas flows in blow-by gas entrance 2 via the PCV valve 8 in the end cap 68 that is arranged on motor 6 and blowby gas passage 81, but blow-by gas can flow in blow-by gas entrance 2 via different paths.

Although in this embodiment, negative pressure outlet 3 is connected to Brake booster 72, and negative pressure outlet 3 can be connected to different device (for example, pressure switch or negative pressure pump).Although a negative pressure outlet 3 is set in this embodiment, a plurality of negative pressure outlets can be set.

Although in this embodiment, motor 6 has four cylinders (cylinder A is to D), and motor 6 can have the cylinder of any a plurality of numbers.It should be noted, the number of the gas-entered passageway of gas-entered passageway forming portion 1 is identical with the number of cylinder in motor 6.

The present invention can be applicable to comprise the intake manifold of blow-by gas entrance and negative pressure outlet, and blow-by gas imports by described blow-by gas entrance, and described negative pressure outlet is communicated with Brake booster.

Claims

1. intake manifold, it comprises blow-by gas entrance (2) and negative pressure outlet (3), blow-by gas imports by described blow-by gas entrance (2), and described negative pressure outlet (3) is communicated with Brake booster, and described intake manifold is characterised in that and comprises:

First adjusts member (41), and it stops described blow-by gas to arrive described negative pressure outlet (3), and wherein said first adjusts member (41) stretches along the curtain coating of the air inlet that flows into described intake manifold.

2. intake manifold according to claim 1, wherein, described negative pressure outlet (3) is arranged on the downstream with respect to the described blow-by gas entrance (2) of the described stream of described air inlet.

3. intake manifold according to claim 1 and 2, wherein, described first to adjust member (41) be the plate element that the zone that will be formed with described blow-by gas entrance (2) and the region separation that is formed with described negative pressure outlet (3) are opened.

4. intake manifold according to claim 3, wherein, the described first cardinal extremity of adjusting member (41) is connected on the wall surface near the position of the position that is formed with described negative pressure outlet (3), and described first adjusts member (41) and be projected in the stream of described air inlet.

5. the described intake manifold of any one according to claim 1 to 4, wherein, adjust in described negative pressure outlet (3) and described first the second adjustment member (5) is set between member (41), described second adjusts member (5) stops described blow-by gas to arrive described negative pressure outlet (3).

6. intake manifold according to claim 5, wherein, described second to adjust member (5) be the board member that extends on the upstream side with respect to the position that is provided with described negative pressure outlet (3) of the described stream of described air inlet.

7. intake manifold according to claim 6, wherein, described second adjusts member (5) extends from wall surface, to surround the zone with respect to the described upstream side of the described position that is provided with described negative pressure outlet (3) of the described stream of described air inlet.

8. the described intake manifold of any one according to claim 1 to 7, wherein, arrange near described blow-by gas entrance (2) and flow into prevention member (211), and described inflow stops member (211) to stop the moisture in the described blow-by gas that flows into by described blow-by gas entrance (2) to flow in the described stream of described air inlet.

9. intake manifold according to claim 8, wherein, it is following wall member that described inflow stops member (211): it is arranged on downstream side with respect to the stream of the described blow-by gas that flows into by described blow-by gas entrance (2), and described wall member with the direction of the perpendicular direction of the described stream of described blow-by gas on extend.