CN1460777A

CN1460777A - Air leaking treatment device for motor-driven two wheeler

Info

Publication number: CN1460777A
Application number: CN03128524A
Authority: CN
Inventors: 藤原正树; 细野健二; 铃木格藏; 稻田武
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2002-05-14
Filing date: 2003-05-06
Publication date: 2003-12-10
Anticipated expiration: 2023-05-06
Also published as: KR20030088868A; BR0301319A; KR100533657B1; TW200400315A; JP4041343B2; JP2003328722A; TWI222491B; CN1213218C; BR0301319B1

Abstract

Blow-by gas treating apparatus for motorcycle. An entrance joint 45 and an exit joint 46 which connect a high-level side passage 41a of a blow-by gas return flow passage 41 and a downstream side passage 41b, respectively, are formed as a single unit in an oil separator tank 43. In the exit joint 46 projecting towards the oil separate tank 43, the device is provided with an oil return tube 47, which prevents the outflow of the oil to the exit joint 46 side. Even if an entrance joint and an exit joint are formed as a single unit in an oil separator, the oil, which is separated from the blow-by gas inside the oil separator tank which may still be prevented from flowing out of the exit joint.

Description

The two-wheeled gas treatment equipment that spills

Technical field

The present invention relates to a kind of two-wheeled gas treatment equipment that spills, particularly relate to a kind of so two-wheeled improvement that spills gas treatment equipment, the gas backstreaming passage that spills that this is two-wheeled spills between the gas-entered passageway that is used to discharge the ventilating hole that spills gas and motor that gas treatment equipment will connect motor is divided into the upstream side passage of ventilation oral-lateral and the downstream side passage of gas-entered passageway side, by oil separating case these upstream and downstream side canals are connected, spill gas separation oil at oil separating case from what import, turn back to the ventilation oral-lateral, simultaneously, the gas that spills after the separating oil is sent to the gas-entered passageway side.

Background technique

Past, in two-wheeled blow-by gas processing device, as be disclosed in the Japanese kokai publication hei 11-247643 communique, as known structure, constitute oil separating case and the outlet connection that is connected the downstream side passage that spills the gas backstreaming passage respectively, when outlet connection is installed on oil separating case, in oil separating case, protrudes into specific length by the inner that makes outlet connection, thereby in oil separating case, do not flow out to outlet connection from the oil that spills gas separation.

Yet, past above-mentioned spilt gas treatment equipment is applicable to occasion difficulty very on forming technique that inlet attack and outlet connection are integrally formed in oil separator.

Summary of the invention

The present invention makes in view of such situation, even its purpose is to provide a kind of above-mentioned two-wheeled gas treatment equipment that spills that also can prevent from oil separating case to flow out to from the oil that spills gas separation outlet connection in the occasion that inlet attack and outlet connection is integrally formed in oil separator effectively.

In order to achieve the above object, the two-wheeled gas backstreaming passage that spills that spills between the gas-entered passageway that discharge that gas treatment equipment will connect motor spills the ventilating hole of gas and motor of the present invention is divided into the upstream side passage of ventilation oral-lateral and the downstream side passage of gas-entered passageway side, by oil separating case these upstream and downstream side canals are connected, spill gas separation oil at oil separating case from what import, turn back to the ventilation oral-lateral, simultaneously, the gas that spills after the separating oil is sent to the gas-entered passageway side; It the 1st is characterised in that: at the integrally formed inlet attack and the outlet connection that is used to be connected the downstream side passage that is used to connect the upstream side passage of oil separating case, at the embedded oil pipe that reinstalls of this outlet connection, this return tube protrudes in the oil separating case, prevents that oil from flowing out to the outlet connection side.

Above-mentioned gas-entered passageway is corresponding with connecting tube 21 in the embodiment of the invention described later, and in addition, above-mentioned upstream side passage and downstream side passage are corresponding with breathing pipe 41a and conduit 41b respectively.

According to the 1st feature, by at integrally formed inlet attack of oil separating case and outlet connection, thereby can reduce number of components and assembling man-hour, reduce cost.And, can prevent from oil separating case, to flow out to outlet connection from the oil separating case inwall by the so simple structure of return tube that protrudes at the outlet connection setting-in in the oil separating case from the oil that spills gas separation, promptly carry out oil return.

In addition, the present invention also has the 2nd feature on the basis of the 1st feature: form the locating flange that contacts with the outer end of outlet connection at return tube.

According to the 2nd feature, be contacted with the outer end of outlet connection by making locating flange, thereby the protrude into length of return tube at oil separating case can be defined as necessarily, guarantee stable oil return effect often.

In addition, the present invention also has the 3rd feature on the basis of the 1st or the 2nd feature: the inwall at gas-entered passageway is provided with guiding wall, and this guiding wall will guide to the air-strainer side that is connected with the upstream extremity of gas-entered passageway from the oil that the oil separating case side invades gas-entered passageway.

According to the 3rd feature, just in case the oil that separates in oil separating case invades in the gas-entered passageway by outlet connection, this oil is also side directed towards air-strainer by guiding wall, flows out to the outside from the drain hole of air-cleaner box, so, can avoid above-mentioned oil to be drawn into motor.

Description of drawings

Fig. 1 has the two-wheeled left surface figure that the present invention spills gas treatment equipment.

Fig. 2 is the amplification right hand view that spills the gas treatment equipment periphery of Fig. 1.

Fig. 3 is the 3-3 line sectional view of Fig. 2.

Fig. 4 is the 4-4 line sectional view of Fig. 2.

Fig. 5 be Fig. 4 want portion's enlarged view.

Embodiment

Below with reference to the accompanying drawings shown in one embodiment of the invention form of implementation of the present invention is described.

Fig. 1 has the two-wheeled left surface figure that the present invention spills gas treatment equipment, Fig. 2 is the amplification right hand view that spills the gas treatment equipment periphery of Fig. 1, Fig. 3 is the 3-3 line sectional view of Fig. 2, and Fig. 4 is the 4-4 line sectional view of Fig. 2, Fig. 5 be Fig. 4 want portion's enlarged view.

At first, in Fig. 1, the vehicle frame 1 of two-wheeled M have head pipe 2, from the upper back of this pipe 2 by mild to descending slope extend towards the rear and also intermediate portion towards below the crooked person in charge 3, from the beginning manage the lower extending tube 4 that 2 back, bottom extends towards the rear, the pairing left and right vehicle seat rail 5 that extends towards the rear from the left and right sides portion that is responsible for curved part the place ahead of 3 by the anxious gradient that has a down dip, and the intermediate portion that connects these vehicle seat rails 5 and the person in charge 3 underparts between pairing left and right stay 6.Can turn to twelve Earthly Branches to honour the front fork 10 that front-wheel 9f supports at head pipe 2, in addition, can swing up and down twelve Earthly Branches at the rear portion of being responsible for 3 and honour the back vent 11 that trailing wheel 9r supports, posterior bumper 12 is installed between these back vents 11 and above-mentioned vehicle seat rail 5.

Be disposed at the crankcase 13 of motor E therebetween from the front and back supporting by the person in charge 3 and lower extending tube 4.The output of this motor E is delivered to trailing wheel 9r by chain-driven unit 15.

Configuration fuel tank 18 above motor E, this fuel tank 18 carry and be supported on is responsible for 3, the vehicle seat rail 5 about being connected to double type vehicle seat 19 that the passenger of these fuel tank 18 rear ends uses and being installed on.

In back cylinder head 14, the suction port opening of motor E, the Carburetor 20 that gas-entered passageway is connected to this suction port is installed, connect air-strainer 22 at the gas-entered passageway inlet of this Carburetor 20 by connecting tube 21.This air-strainer 22 is configured to by the person in charge 3, vehicle seat rail 5, reaches the leg-of-mutton space that stay 6 surrounds.

Connect the outlet pipe 23 that waste gas is guided to exhaust silencer 24 from this relief opening in front cylinder head 14, relief opening institute opening.

In Fig. 2～Fig. 4, air-strainer 22 is made of air-cleaner box 25 and the filter core cylindraceous 26 that is contained in inside.Air-cleaner box 25 is by the open shell body 25a that makes with synthetic resin in a side and clip the same lid 25b that makes with synthetic resin that sealing component 27 engages at the open end face of this shell body 25a and constitute, and at the perisporium of shell body 25a the air that is used for outer gas is directed in the shell body 25a is installed and is taken into and manages 28.In addition, central opening 30 is at the central part opening of lid 25b, be embedded in the annular slot 31 of end, the upstream outer circumferential face formation of connecting tube 21 at the periphery of this central opening 30, in addition, annular slot 32 is formed at end, the upstream inner peripheral surface of connecting tube 21 in air-cleaner box 25, embed the mounting flange 33a of an end that is formed at the filter core support 33 cylindraceous that is used to keep above-mentioned filter core 26 at this annular slot 32, be bonded on the support 35 that the end wall of shell body 25a forms in the central indentation 34 of the end plate 33b of the other end that is formed at filter core support 33, like this filter core support 33 be bearing in air-cleaner box 25.Perisporium at filter core support 33 wears a plurality of

vents

36,36 that are communicated with each one of filter core 26 ..., in addition, establish netted framework catcher 37 opening facing to the end face of connecting tube 21.

In addition, in the bottom of air-cleaner box 25 will and the drain hole 38 of external communications be set between the mating face of shell body 25a and lid 25b.

On the rear portion of the crankcase 13 of motor E, offer and be used to discharge the ventilating hole that spills gas 40 (with reference to Fig. 1) that betides its inside, this ventilating hole 40 by spill gas backstreaming passage 41 be connected to the end, upstream of above-mentioned connecting tube 21 inner face opening spill gas outlet 42, oil separating case 43 is set in the way that spills gas backstreaming passage 41 as described below.

Spill gas backstreaming passage 41 by the breathing pipe 41a that an end is connected to above-mentioned ventilating hole 40 be connected to and above-mentionedly spill the conduit 41b that gas outlet 42 ground are integrally formed at the end, upstream of connecting tube 21 and constitute.

On the other hand, oil separating case 43 is made by synthetic resin, have be used to make be directed into its inside spill that gas expands and separate the enough volumes that are contained in oil wherein, the integrally formed inlet attack 45 of front end in its bottom, the integrally formed outlet connection 46 of one side on top is pressed into length in accordance with regulations at this outlet connection 46 and protrudes into return tube 47 in the oil separating case 43.This return tube 47 is contacted with the exterior edge face of outlet connection 46, has the flange 47a that regulation return tube 47 protrudes into the length in the oil separating case 43.

At the other end of inlet attack 45 connection breathing pipe 41a, outlet connection 46 links to each other with the conduit 41b of connecting tube 21.At this moment, the shoulder 48 that is formed at the ring-type of conduit 41b inwall is contacted with the locating flange 47a of return tube 47, positively return tube 47 is fixed to assigned position.

As shown in Figure 3 and Figure 4, at the guiding wall 53 of the integrally formed rib shape of the inwall of connecting tube 21, this guiding wall 53 will guide to air-strainer 22 sides from the oil that oil separating case 43 sides invade connecting tube 21.

As shown in Figure 4 and Figure 5, the outer side surface that leaves from outlet connection 46 at oil separating case 43, integrally formed tongue piece 50 with mounting hole 51, flexibly embed the bump bonding 52 of the band protuberance head 52a that the outer side surface that is bonded on connecting tube 21 is convexly equipped with integratedly at this mounting hole 51, stop oil separating case 43 to lay out the revolution of mouthful joint 46 thus.

Below, this embodiment's effect is described.

In the running of motor E, after being taken into air that pipe 28 is taken into air-cleaner box 25 and filtering from air by filter core 26,

vent

36,36 by filter core support 33 ... with framework catcher 37, arrive the gas-entered passageway of Carburetor 20 through connecting tube 21, on one side be drawn into motor E with the fuel mix that sprays on one side here.Water intrusion during as rainwater or carwash in air-cleaner box 25 is in air-cleaner box 25, or in the inwall dewfall of air-cleaner box 25, then these water droplets flow out to the outside naturally from drain hole 38.On the other hand, the gas that spills that takes place in the crankcase 13 of motor E flow in the oil separating case 43 through breathing pipe 41a from ventilating hole 40, through overexpansion, spills gas separation from this and is contained in wherein oil.

Yet, the oil that separates flows down along breathing pipe 41a once more, turn back in the crankcase 13 from ventilating hole 40, the gas that spills after the separating oil is transferred in the connecting tube 21 from spilling gas outlet 42 through return tube 47 and conduit 41b, be drawn into motor E on one side on one side with by the suction air mixing in this pipe 21, carry out combustion disposal.

, at above-mentioned oil separating case 43 integrally formed inlet attack 45 and the outlet connections 46 that respectively connecting tube 21 are connected with conduit 41b, so, can cut down number of components and assemble man-hour the reduction of realization cost.

And, owing to be pressed into return tube 47 at outlet connection 46, this return tube 47 protrudes in the oil separating case 43, so, can in oil separating case 43, flow out to outlet connection 46 from oil separating case 43 inwalls by the part prevention that protrudes in the oil separating case 43 of this return tube 47, promptly carry out oil return from the oil that spills gas separation.

In addition, owing to form the locating flange 47a that contacts with the outer end of outlet connection 46 at return tube 47, so, be certain with return tube 47 in the length legislations that protrudes into of oil separating case 43, can guarantee stable often oil return effect.

Just in case the oil that separates in oil separating case 43 invades in the connecting tube 21 by return tube 47, this oil is also side directed towards air-strainer 22 by the guiding wall 53 of connecting tube 21 inwalls, behind filter core 26, naturally flow out to the outside from the drain hole 38 of air-cleaner box 25 bottoms, so, can prevent that above-mentioned oil is drawn into motor.

The invention is not restricted to the foregoing description, can carry out various design alterations in the scope that does not break away from its main idea.

As described above according to the 1st feature of the present invention, the gas backstreaming passage that spills that connects between the gas-entered passageway that is used to discharge the ventilating hole that spills gas and motor of motor is divided into ventilate the upstream side passage of oral-lateral and the downstream side passage of gas-entered passageway side, connect between these upstream and downstream side canals by oil separating case, spill gas separation oil at oil separating case from what import, turn back to the ventilation oral-lateral, simultaneously, the gas that spills after the separating oil is sent to the gas-entered passageway side; Wherein, at the integrally formed inlet attack and the outlet connection that is used to be connected the downstream side passage that is used to connect the upstream side passage of oil separating case, at the embedded oil pipe that reinstalls of this outlet connection, this return tube protrudes in the oil separating case, prevents that oil from flowing out to the outlet connection side.Like this, can reduce number of components and assemble man-hour, reduce cost, and, can prevent from oil separating case, to flow out to outlet connection from the oil separating case inwall by the so simple structure of return tube that protrudes at the outlet connection setting-in in the oil separating case, promptly carry out oil return from the oil that spills gas separation.

In addition,, on the basis of the 1st feature, form the locating flange that contacts with the outer end of outlet connection at return tube according to the 2nd feature of the present invention, so, the protrude into length of return tube at oil separating case is defined as necessarily, can guarantee stable oil return effect often.

According to the 3rd feature of the present invention, on the basis of the 1st or the 2nd feature, guiding wall is set at the inwall of gas-entered passageway, this guiding wall will guide to the air-strainer side that is connected with the upstream extremity of gas-entered passageway from the oil that the oil separating case side invades gas-entered passageway; So just in case the oil that separates in oil separating case invades in the gas-entered passageway by outlet connection, this oil is also side directed towards air-strainer by guiding wall, flow out to the outside from the drain hole of air-cleaner box, so, can avoid above-mentioned oil to be drawn into motor.

Claims

1. A blow-off gas treatment device for a two-wheeled motor vehicle, which recirculates the blow-off gas between the vent (40) for discharging blow-off gas connected to the engine (E) and the intake passage (21) of the engine (E) The passage (41) is divided into an upstream side passage (41a) on the air vent (40) side and a downstream side passage (41b) on the intake passage (21) side, and these upstream and downstream side passages ( Between 41a and 41b), oil is separated from the leaked gas introduced in the oil separation box (43) and returned to the vent (40) side, and at the same time, the leaked gas after oil separation is sent to the side of the air intake channel (21);

It is characterized in that: the inlet joint (45) used to connect the upstream side passage (41a) and the outlet joint (46) used to connect the downstream side passage (41b) are integrally formed in the oil separation box (43), and the outlet joint ( 46) Embed the oil return pipe (47), and the oil return pipe (47) protrudes into the oil separation box (43) to prevent oil from flowing out to the outlet joint (46) side.

2. The leaked gas treatment device for motorcycles according to claim 1, characterized in that: a positioning flange (47a) in contact with the outer end of the outlet joint (46) is formed on the oil return pipe (47).

3. The leakage gas treatment device of a motorcycle according to claim 1 or 2, characterized in that: a guide wall (53) is set on the inner wall of the air intake passage (21), and the guide wall (53) will flow from the oil Oil intruded into the intake passage (21) on the side of the separation case (43) is guided to the side of the air filter (22) connected to the upstream end of the intake passage (21).