CN1199816A

CN1199816A - Air suction apparatus for internal combustion engine

Info

Publication number: CN1199816A
Application number: CN 98105444
Authority: CN
Inventors: 确薰; 草野拓平
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1997-05-16
Filing date: 1998-03-12
Publication date: 1998-11-25
Anticipated expiration: 2018-03-12
Also published as: TW483492U; CN1084435C; JPH10317976A; ITTO980326A1

Abstract

An air suction device of a diesel engine is provided, wherein the length of an intake outlet branch pipe of mixing gas can be shorter than demanded length, a suction chamber can be installed with great free degree, thereby avoiding the inference with a car body. The device is formed in that the intake and outlet branch pipe of mixing gas 22d is separated from a suction channel 22a on the downstream of a throttle valve, and the branch pipe 22d is connected with the suction chamber 30. The device is characterized in that the suction chamber 30 is arranged on an air cleaner cover 26 which is connected on the upstream side of the throttle valve.

Description

The suction means of internal-combustion engine

The present invention relates to the suction means in a kind of internal-combustion engine with induction chamber.

The suction means of known existing technology, be by induction chamber being connected on the arm that goes out from the air suction way top set in the downstream of throttle valve, the mixed gas that the pressure oscillation that utilizes air suction way imports induction chamber with mixed gas and will import to induction chamber is with the mixed gas interflow of flowing in sucking path and be discharged in the cylinder, makes inspiratory flow smooth and improve gettering efficiency.

Opening in the example of recording and narrating in the flat 3-51162 communique real, induction chamber carries has the shaking on the unit of two-wheeled motor vehicle that the unit shakes internal combustion combustion machine.

In same example, sucking pipe extends and is connected on the vaporizer from the vaporizer side draught gas port of the bent axle cover of two circulation engines of being arranged on the front portion of shaking the unit.

And mixed gas come in and go out tap from sucking pipe upward branch be connected on the induction chamber, this induction chamber is fixed on the guard shield with rivet, on guard shield is covered with and stands up the cylinder of establishing from crankcase.

Shake internal-combustion engine for the unit because internal-combustion engine is provided in the center of shaking nearby, cover between the car body of the guard shield of identical cylinder of internal combustion engine and top surplus capacity seldom, therefore be installed in and can not obtain too big volume with the induction chamber on the guard shield.

If want to guarantee that induction chamber has the words of the above volume of air displacement, the induction chamber of this volume will be positioned at the mixed gas that begins to branch out upward from sucking pipe and come in and go out on the arm, its extreme higher position is also higher than guard shield, just interferes with the car body that shakes the induction chamber that shakes the unit and its top and is a problem.

The present invention makes in view of above-mentioned these problems, the object of the present invention is to provide a kind of pipe of mixed gas need not being come in and gone out to make the suction means that the installation degrees of freedom of length, induction chamber that must be above is big, can avoid the internal-combustion engine of interfering with car body.

To achieve the above object, the 1st technological scheme that the present invention adopts is: go out the mixed gas arm of coming in and going out in the air suction way top set from the downstream of throttle valve, in the suction means of the internal-combustion engine that on this arm, connects induction chamber and form, on the air-strainer cover of the upstream side that is connected to aforementioned throttle valve, be provided with aforementioned induction chamber and form the suction means of internal-combustion engine.

Arm comes out from the air suction way top set in the downstream of throttle valve because mixed gas is come in and gone out, and be connected on the induction chamber on the air-strainer cover of the upstream side that is arranged on throttle valve, if so get around throttle valve, the weak point that pipe range can be set, the place that can set on the air-strainer cover is many, and the degrees of freedom of installation is big.

And, even because be applicable to that the unit shakes the occasion of internal-combustion engine, the air-strainer cover also is arranged on the position of leaving the center of shaking, therefore and between the car body excess room is arranged, and can avoid being arranged on induction chamber and car body interference on the air-strainer cover at an easy rate.

Second technological scheme that the present invention adopts is: in the suction means of the described internal-combustion engine of above-mentioned first technological scheme, aforesaid induction chamber and aforesaid air-strainer cover are seen being provided with of overlaid from the side.

Can be not outstanding to the air-strainer top, just more can avoid with the interference of car body.

And, induction chamber can be stashed with the air-strainer cover, can seek the raising of appearance quality.

The 3rd technological scheme that the present invention adopts is: in the suction means of the described internal-combustion engine of aforementioned first technological scheme, aforesaid induction chamber is arranged on the top of aforementioned air-strainer cover.

The installation degrees of freedom of induction chamber on the air-strainer cover is big, the mixed gas weak point that arm is set of coming in and going out, and both avoided interference with car body, can be arranged on the top of air-strainer cover again.

The 4th technological scheme that the present invention adopts is: in the suction means of any one the described internal-combustion engine in the 1st technological scheme to the 3 technological schemes, aforesaid air-breathing and aforesaid air-strainer cover split ground is shaped.Because induction chamber is arranged on the high air-strainer of rigidity, so be fixed reliably.

Only the maintenance of induction chamber is easy, and replacing is possible.

The 5th technological scheme that the present invention adopts is: in the suction means of any one the described internal-combustion engine in aforementioned the 1st technological scheme to the 3 technological schemes, aforesaid induction chamber and aforesaid air-strainer cover are made of one.

Number of parts is few, and assembling operation carries out easily.

The 6th technological scheme that the present invention adopts is: in the suction means of any one the described internal-combustion engine in aforementioned the 1st technological scheme to the 5 technological schemes, aforesaid internal-combustion engine is that the unit shakes internal-combustion engine, has set aforesaid air-strainer on the top of shaking the unit.

Shake in the internal-combustion engine in the unit, induction chamber can be arranged on the air-strainer.

Fig. 1 is the unitary side view of the two-wheeled motorcycle that relates to of one embodiment of the invention.

Fig. 2 is the side view that shakes unit partly cut-away.

Fig. 3 is the identical plan view that shakes the unit.

Fig. 4 is the side view of guard shield.

Fig. 5 is the plan view of identical guard shield.

Fig. 6 is the side view of sucking pipe member.

Fig. 7 is the plan view of sucking pipe member.

Fig. 8 is the rear view of sucking pipe member.

Fig. 9 is the cut away left side view of air-strainer cover.

Figure 10 is the plan view of same air filter cleaner cover.

Figure 11 is the sectional view of cutting open along the XI-XI line in Fig. 9.

Figure 12 is the side view of induction chamber.

Figure 13 is the plan view of identical induction chamber.

Figure 14 is the front view of identical induction chamber.

Figure 15 is the sectional view of cutting open along the XV-XV line in Fig. 3.

Figure 16 is the side view that shakes unit partly cut-away that another embodiment relates to.

Figure 17 is the plan view that Figure 16 shakes the unit.

Figure 18 is the side view of induction chamber.

Figure 19 is the bottom view of identical induction chamber.

Below with reference to Fig. 1 to Figure 15 one embodiment of the invention are described.

Present embodiment is applicable to the two-wheeled motor vehicle 1 that the unit shakes internal-combustion engine is housed that Fig. 1 shows all side views of two-wheeled motor vehicle 1.

Vehicular body front 2 is connected by low tread portion 4 with rear vehicle 3, and the car body crossbeam 5 that becomes body framing is made of summer 5b, the 5b of anterior crossbeam 5a, pairing left and right and rear portion crossbeam 5c, the 5c of pairing left and right.Aforementioned anterior crossbeam 5a descends and forms along Vehicular body front, and aforementioned levels crossbeam 5b, the 5b forwardly lower end of crossbeam 5a are divided into two and through the lower direction rear extensions of tread portion 4.Aforementioned

rear portion crossbeam

5c, 5c be from summer 5b, and each rear portion of 5b begins to erect and to oblique rear extension.

Be provided with seat 6 above the crossbeam 5c of the rear portion of rear vehicle 3, the downside at seat 6 has set containing box 7.

On Vehicular body front 2, be provided with the steering head 9 that top has handle 8, downside is by front fork 10 suspension front-wheels 11, by handle 8 steerings.

The front end that will shake unit 15 by component-bar linkage 12 is connected to the curved part at the rear portion of summer 5b.

Shake unit 15 and be connected on the car body crossbeam 5, fluctuate freely, shake between the rear portion crossbeam 5c of the rear portion of unit 15 and its top and clamped reaction tube 13 by link rod 12.

That shakes the very long driving belt control box 20 of the front and back size of unit 15 anterior doublely does crankcase, integratedly internal-combustion engine 6 is set.The rear portion is double makees gearbox, axle is supporting rear axle 18.The power of internal-combustion engine 16 is delivered to trailing wheel 18 by driving belt control gear 17, and this driving belt control gear 17 is for having the driving belt transfer mechanism of automatic speed changing function.

Stretch out at the front end of driving belt control box 20 and to be provided with the suspention carriage 20a that is connected to aforementioned component-bar linkage 12, the opening in left side covers with transmission-case cover 28.

Internal-combustion engine 16 is two circulation engines, and the cylinder 16a that is covered by guard shield 19 a little hypsokinesis stands and establishing, formation intakeport 21 on the left crankcase of cylinder 16a, and setting-in the tongue plate valve at intakeport place, the downstream side of intakeport 21.

Sucking pipe member 22 is installed on intakeport 21, the sucking pipe 22b of sucking pipe member 22 is after left extends, bending rearward also is connected on the vaporizer 23, and vaporizer 23 is connected on the air-strainer 25 of the latter half of upside that is provided in driving belt control box 20 by connecting tube 24.

As shown in Figure 4 and Figure 5, the guard shield 19 that covers cylinder 16a roughly is made of the sidewall 19a and the upper wall 19b of rectangle tubular, extends the 19c of portion and is rearward extending from the left back bight of sidewall 19a.

The shaft core position place of the cylinder on upper wall 19b forms round opening 19d.

And form slightly rectangular notch part 19e in the bottom of left side wall 19a, and above notch part 19e, form the bellying 19f that bloats to left, be provided with rearward exhaust port 19g with the left opening on the top of bellying 19f.

When guard shield 19 covered cylinder 16a, the top intakeport 21 of bent axle cover was located in the guard shield 19 with the right-hand part of sucking pipe member 22 on being installed in this identical intakeport 21, and stretch out from the notch part 19e of guard shield 19 left side of sucking pipe member 22.

To shown in Figure 8, sucking pipe 22b in sucking pipe parts 22 begins left from the intermediate portion that is installed in the slightly rectangular connection base station 22a on the intakeport 22 that oblique upper extends out as Fig. 6, and tip portion is rearward crooked and form joint 22c.

And the part that extends out at the connection base station 22a from sucking pipe 22b forms the connecting branch 22d that uses to the induction chamber of top set.

And, on than the more forward part of sucking pipe 22b joint 22c, stretch out and be provided with the connecting branch 22e that automatic valve is used.

On as the attachment portion 22c of the upstream side of sucking pipe 22b in conjunction with the mixed gas outlet joint 23b of vaporizer 23.

The vaporizer 23 that is connected on this sucking pipe member 22 is equipped with motorcycle starter 23a, combine with joint 22c as the upstream side of sucking pipe 22b towards the mixed gas outlet joint 23b in the place ahead, the air towards the rear sucks joint 23c and is connected with air-strainer 25 by connecting tube 24.

Air-strainer 25 is made of at the cover cap 27 of its left side opening air-strainer cover 26 and plug.

Air-strainer cover 26 is extremely shown in Figure 11 as Fig. 9, the recess that bloats to the right from the opening peripheral portion 26a in left side is gone into recess 26d by the outer aspiration of the rectangular recess 26c of front side and rear side and is constituted, both are by separating near the vertical next door 26b at rear, and the first half of the rectangular recess 26c of front side has formed the recessed to the right again platform shape recess 26e that goes out.

Go into to have formed the 26f of angle tube portion that points to oblique above-below direction on the recess 26d at the outer aspiration of rear side, the 26f of this angle tube portion is communicated to inside with the upper end, and the lower end is being opened the outside.

The platform shape recess 26e of the first half of rectangular recess 26c, the right side of its upper wall dented formation stepped part 26g, the part depression of the horizontal wall of stepped part 26g forms recess 26h for rectangle, and processing is being provided with screw hole 26I on the vertical wall of this recess 26h.

On the antetheca of platform shape recess 26e, form the circular hole 26j that is communicated with connecting tube 24.

From the lower wall of rectangular recess 26c and platform shape recess 26a stretching out carriage 26k, 26l, this carriage 26k, 26l are used to install aforesaid driving belt control box 20.

Cover cap 27 covers the left side and forwards extends the left that also is covered with vaporizer 23 again from air-strainer cover 26 in the mode of the opening that clogs air-strainer cover 26.(with reference to Fig. 3)

Induction chamber 30 has been installed on the stepped part 26g of aforesaid air-strainer cover 26.

To shown in Figure 14, induction chamber 30 forms the long tubular in front and back as Figure 12, and connecting tube 30a is stretching out before the lower direction of antetheca.

Stretch out sheet 30b and stretch out downwards from the diapire of induction chamber 30, the central authorities of stretching out sheet 30b are provided with mounting hole 30c.

When position according to the rules concerns on the stepped part 26g that this induction chamber 30 is fitted to aforementioned air-strainer cover 26, with reference to Figure 15, stretch out sheet 30b setting-in to recess 26h, by tightening up stretching out on the mounting hole 30c of sheet 30b to connect screw 32 and to screw in screw hole 26I, induction chamber 30 can be fixed on the air-strainer cover 26.

As shown in figure 15, be installed in the induction chamber 30 on the air-strainer cover 26, its highest portion is on the highest the roughly the same height with air-strainer cover 26, and therefore, induction chamber 30 is hidden in the air-strainer 25, can not see from the outside.Seek apparent progress.

So, be installed in the induction chamber 30 on the air-strainer cover 26, be positioned at as illustrated in fig. 3 from the sucking pipe 22b of aforementioned sucking pipe member 22 rear of the connecting branch 22d of branch upward, the connecting tube 30a of induction chamber 30 stretches out towards connecting branch 22d direction, connects and is in approaching locational connecting branch 22g and connecting tube 30a mutually as the come in and go out inhaling hose 31 of pipe of mixed gas.

When guard shield 19 covers the cylinder 16a of internal-combustion engine 16, the bellying 19f that bloats to left of guard shield 19 covers the connecting branch 22d of branch upward from sucking pipe 22b, and the relief opening 19g on the top of bellying 19f is rearward with the left opening and towards vaporizer 23 and induction chamber 30.

Therefore, the warm wind of coming out from exhaust port 19g is to vaporizer 23, and the vaporizer 23 of can heating can prevent to freeze.

Especially as shown in Figure 3, because wall is done with the 19e of the portion that extends of guard shield 19 in the right side of vaporizer 23, left-external side portion by prolonging of cover cap 27 and is covered with, so air draft acts on vaporizer effectively, prevents that the effect of freezing is big.

And, the inhaling hose 31 that the rear end is combined with the connecting tube 30a of induction chamber 30 forwards extends and enters from the exhaust port 19g of the opening rearward of guard shield 19 inside of guard shield 19, by its front end with from sucking pipe 22b upward the connecting branch 22d of branch combine, be communicated with sucking pipe 22b and induction chamber 30.

Because utilized the exhaust port 19g of guard shield 19 to communicate, therefore just there is no need on guard shield 19, to be provided with specially the opening of inhaling hose 31 usefulness with inhaling hose 31.

As described above, the outstanding connecting tube 30a in the place ahead of the connecting branch 22d of branch and induction chamber 30 on the stepped part 26g of the air-strainer cover 26 of the upstream side that is installed in throttle valve, the connecting branch 22d that is in approaching mutually position on the right side of vaporizer 23 are being connected with connecting tube 30a upward because inhaling hose 31 is connecting the sucking pipe 22b in downstream side of the throttle valve in the vaporizer 23, so the length of inhaling hose 31 is short, there be not condition of poor on the filling performance and on arranging.

The air-strainer cover 26 that induction chamber 30 is installed be positioned at from as the component-bar linkage 12 at the center of shaking of shaking unit 15 from the position on, and above car body between have space more than needed, and the induction chamber 30 that is installed on the stepped part 26g of air-strainer cover 26 is outstanding upward from air-strainer 25, even shake integratedly with shaking unit 15, induction chamber 30 also not can with the car body interference.

The induction chamber 30 that is mounted like this is communicated to the branching portion of sucking pipe 22b by inhaling hose 31, and branch part is in the centre of the tongue plate valve in the throttle valve at upper reaches and downstream.

Therefore, the mixed gas in will flowing during the tongue valve blocking imports induction chamber 30 and makes this mixed gas and be flowing in the mixed gas interflow in the sucking pipe 22b and suck when the tongue plate valve is open, can improve air-breathing pack effectiveness.

Induction chamber 30 is not limited to be installed in other place that stepped part 26g also can be installed in air-strainer cover 26, and inhaling hose 31 can be so not long yet, and the degrees of freedom of installation is very big.

Below shown in another embodiment be as Figure 16 and shown in Figure 17 induction chamber 50 be installed in example on the air-strainer cover 61.

As Figure 18 and shown in Figure 19, induction chamber 50 is shorter than aforementioned induction chamber 30 front and back length, and connecting tube 50a is stretching out from lower direction the place ahead of antetheca, and installation sheet 50b is stretching out below diapire.

Installation sheet 50b fore-and-aft direction is long, wears mounting hole 50c at the rear portion, and the 50b front end is stretching out position-limited claw 50d.

Air-strainer cover 61 forward in the above leftward position have been convexly equipped with screw hole projection 61a on the one hand, form spacing recess 61b in its place ahead.

Spacing recess 61b and spacing is inserted with position-limited claw 50d in the position that induction chamber 50 is stipulated on air-strainer cover 61, with installation sheet 50b from contact screw hole, right side lug boss 61a, screw 62 passes the mounting hole screw-in and is fixed tightly in screw hole lug boss 61a, and induction chamber 50 is fixed on the air-strainer cover 61 like this.

An end of inhaling hose 51 is attached on the forwards outstanding connecting tube 50a of the top induction chamber 50 that is installed in air-strainer cover 61 like this, this inhaling hose 51 from connecting tube 50a forwards extend, the lateral bending song forward from the left side of vaporizer 63, the other end is attached to the sucking pipe 64 place branches at the downstream side of vaporizer 63, and on the outstanding connecting branch 64a that is provided with, inhaling hose 51 is so not long.

In the present embodiment, though induction chamber 50 is installed in the top of air-strainer 60, it is on the position of leaving mutually with the center of shaking of shaking the unit, and above car body between rich space is also arranged, so induction chamber 50 can not interfere with car body.

Because exposing in the outside, induction chamber 50 is being set up, so the maintenance of induction chamber 50 and replacing are easy.

In above embodiment, induction chamber and air-strainer are splits, are installed together by screw, in advance air-strainer and induction chamber are formed integral body and also are fine.

Number of parts is few like this, and assembling operation carries out easily.

Claims

1. the suction means of an internal-combustion engine, air suction way top set in the downstream of throttle valve in the suction means of this internal-combustion engine goes out the mixed gas arm of coming in and going out, induction chamber is connected on this arm, it is characterized in that, on the air-strainer cover of the upstream side that is connected to aforementioned throttle valve, be provided with aforementioned induction chamber.

2. the suction means of internal-combustion engine as claimed in claim 1 is characterized in that: will see from the side with aforesaid air-strainer cover overlaid aforesaid induction chamber is set.

3. the suction means of internal-combustion engine as claimed in claim 1, it is characterized in that: aforementioned induction chamber is arranged on the top of aforementioned air-strainer cover.

4. as the suction means of any one the described internal-combustion engine of claim 1 to the claim 3, it is characterized in that: with the aforementioned air-strainer cover split ground aforementioned induction chamber that is shaped.

5. as the suction means of claim 1 any one described internal-combustion engine to the claim 3, it is characterized in that: aforementioned induction chamber and aforementioned air-strainer cover are configured as one.

6. as the suction means of claim 1 any one described internal-combustion engine to the claim 5, it is characterized in that: aforementioned internal-combustion engine is that the unit shakes internal-combustion engine, aforementioned air-strainer is provided in the top of shaking the unit.