CN105507984A - Gas carry-over exchanging device for internal combustion engine - Google Patents
Gas carry-over exchanging device for internal combustion engine Download PDFInfo
- Publication number
- CN105507984A CN105507984A CN201510651136.3A CN201510651136A CN105507984A CN 105507984 A CN105507984 A CN 105507984A CN 201510651136 A CN201510651136 A CN 201510651136A CN 105507984 A CN105507984 A CN 105507984A
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- Prior art keywords
- combustion engine
- valve
- opening portion
- gas blowby
- internal
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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
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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
- F01M2013/0038—Layout of crankcase breathing systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention provides a gas carry-over exchanging device for an internal combustion engine. The layout degree of freedom of parts of the internal combustion engine can be guaranteed, and gas carry-over generated in the internal combustion engine can be exchanged properly. The gas carry-over exchanging device for the internal combustion engine is provided with a new gas supplying tubing (323), a gas carry-over discharging tubing (322) and a PCV valve unit (324). The new gas supplying tubing (323) provides clean air from an air cleaner (33) through an opening part (318a) formed in a cylinder head cover (304). The gas carry-over discharging tubing (322) discharges gas carry-over from a crankcase (301). The PCV valve unit (324) is provided with a one-way valve and is connected with the new gas supplying tubing, the one-way valve only allows air to flow from the air cleaner to the cylinder head cover, and one part of the PCV valve unit blocks the above opening part.
Description
Technical field
The present invention relates to the gas blowby air interchanger of internal-combustion engine.
Background technique
In the past, propose a kind of gas blowby air interchanger (such as with reference to patent documentation 1), the gas blowby delivery line guided the gas blowby with the clean air sent in the body of internal-combustion engine is connected to air cleaner by it, on the other hand, the downstream of the new gas ingress pipe guided the clean air from air cleaner is connected to body of the internal-combustion engine, and clean air is sent into crankshaft room from the cylinder head side of internal-combustion engine.
In this gas blowby air interchanger, the clean air from air cleaner is sent into crankshaft room with the state after being heated by cylinder head.Thereby, it is possible to prevent in crankshaft room the condensing of contained humidity in gas blowby, gasolene ingredient, the deterioration being mixed into the oil caused because of condensate can be suppressed.In addition, in this gas blowby air interchanger, new gas ingress pipe is connected to air cleaner via allowing the one-way valve of the circulation of internal combustion engine main body.Thereby, it is possible to efficient send into the air after being heated by cylinder head according to the negative pressure produced in crankshaft room.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2007-146772 publication
But in the gas blowby air interchanger described in patent documentation 1, the collecting framework of one-way valve and air cleaner and cylinder head are provided separately, and both are connected by pipe part.Therefore, from air cleaner to the interval of cylinder, in other words, the framework of one-way valve is accommodated in the position configuration being configured with sucking pipe, throttle valve main body etc.Therefore, there is the problem of the restriction of the component layouts of internal-combustion engine.In addition, under the environment of cold, due to new gas steam-laden dew freeze cause one-way valve to be difficult to smooth action, the situation that cannot obtain original function can be produced.
Summary of the invention
The present invention makes in view of the above problems, and its object is to the gas blowby air interchanger providing a kind of internal-combustion engine, it can guarantee the degrees of freedom of the component layouts of internal-combustion engine, and can gas blowby that suitably combustion motor produces take a breath.
The gas blowby air interchanger of internal-combustion engine of the present invention possesses: new gas supplying tubing, provides the clean air from air cleaner by the opening portion being formed at cylinder head or valve mechanism cover; Gas blowby discharges pipe arrangement, in crankcase, discharge gas blowby; And one-way valve unit, there is one-way valve and be connected to described new gas supplying tubing, this one-way valve only allows air from described air cleaner to described cylinder head or cylinder-head-side circulation, the feature of described gas blowby air interchanger is, described one-way valve cell location is make a part for described one-way valve unit block described opening portion.
According to this structure, block by a part for one-way valve unit the opening portion being formed at cylinder head or valve mechanism cover, therefore, it is possible to prevent the space matching one-way valve between air cleaner and cylinder head etc., the degrees of freedom of the component layouts of internal-combustion engine can be guaranteed.In addition, due to configuration one-way valve near cylinder head etc., therefore, even if in cold environments, the heat that also can be produced by cylinder prevents one-way valve to be difficult to free flowing exercise because to freeze etc., can suitably in combustion motor the gas blowby of generation take a breath.
Particularly, in the gas blowby air interchanger of above-mentioned internal-combustion engine, preferably, described one-way valve unit is fixed on the position relative with described opening portion and can dismounting.According to this structure, due to one-way valve unit, be configured to can dismounting, therefore, by means of only replacing one-way valve unit and cover, just can keep compatibility in the chien shih cylinder head of the vehicle of carrying gas blowby air exchange system and the vehicle of not carrying or valve mechanism cover.Thereby, it is possible to reduce the cost needed for manufacture of cylinder head or valve mechanism cover.
In the gas blowby air interchanger of above-mentioned internal-combustion engine, described opening portion preferred disposition is near the structure member of valve mechanism.According to this structure, owing to configuring opening portion near the structure member of valve mechanism, therefore, it is possible to make the new gas directly contact structures parts from air cleaner, the structure member of valve mechanism effectively can be cooled.
In addition, in the gas blowby air interchanger of above-mentioned internal-combustion engine, preferably, during side-looking, described opening portion is configured to adjacent with the upper side of the intakeport of described cylinder head.According to this structure, because opening portion is configured to adjacent with the intakeport of cylinder head, therefore, it is possible to configure new gas supplying tubing from air cleaner along the mode of air suction way of the combustion air being connected to intakeport.Thereby, it is possible to reduce the space of configuration needed for new gas supplying tubing, the degrees of freedom of the component layouts of internal-combustion engine can be improved.
Further, in the gas blowby air interchanger of above-mentioned internal-combustion engine, preferably, when overlooking, described opening portion is configured at the position overlapped with the elongation line of the axis of cylinder.According to this structure, because the position overlapped at the elongation line of the axis with cylinder configures opening portion, therefore, it is possible to configure new gas supplying tubing from air cleaner along the mode of air suction way of the combustion air being connected to intakeport.Thereby, it is possible to reduce the space of configuration needed for new gas supplying tubing, the degrees of freedom of the component layouts of internal-combustion engine can be improved.
Invention effect
According to the gas blowby air interchanger of internal-combustion engine of the present invention, the degrees of freedom of the component layouts of internal-combustion engine can be guaranteed and the gas blowby produced at internal-combustion engine is suitably taken a breath.
Accompanying drawing explanation
Fig. 1 is the side view of the motorcycle of the gas blowby air interchanger of the internal-combustion engine being suitable for present embodiment.
Fig. 2 is the enlarged view of the motor periphery of above-mentioned motorcycle.
Fig. 3 is the motor of above-mentioned motorcycle and the sectional view of air cleaner.
Fig. 4 is the sectional view of the A-A of single dotted broken line shown in Fig. 2.
Fig. 5 is the motor of above-mentioned motorcycle and the plan view of air cleaner.
Fig. 6 is the explanatory drawing of the Pcv valve gate cell that above-mentioned motorcycle possesses.
Fig. 7 is the explanatory drawing of the valve mechanism cover being provided with above-mentioned Pcv valve gate cell.
Symbol description
1 motorcycle
3 motors
301 crankcases
302 cylinder block
303 cylinder head
304 valve mechanism cover
310 intakepories
311 Aspirating valvess
313 valve cages
314 valve mechanisms
318,318a, 318b opening portion
320 suction tude (sucking pipe)
322 gas blowbies backflow pipe arrangement (backflow pipe arrangement)
323 new gas supplying tubing
324PCV valve unit
325 valve covers
The fixing face of 326 valve mechanism cover
The fixing face of 327 valve covers
328 spring valve supports
328a through hole
328b spring valve
328c retainer
329 wall parts
329a through hole
33 air cleaner
Embodiment
Below, with reference to accompanying drawing, present embodiment is described in detail.In the following, be described the example gas blowby air interchanger of internal-combustion engine of the present invention being applicable to streetcar type motorcycle, but applicable object is not limited to this, can change.Such as, also the gas blowby air interchanger of internal-combustion engine of the present invention can be applicable to the motorcycle of other types.In addition, the vehicle (such as automatic tricycle) had beyond the motorcycle of internal-combustion engine can be also applicable to.
Fig. 1 is the side view of the motorcycle of the gas blowby air interchanger of the internal-combustion engine being suitable for present embodiment.In addition, in the following figure, for convenience of explanation, set respectively the vehicle front of motorcycle as arrow FR, vehicle body rear be on the left of arrow RE, vehicle body on the right side of L, vehicle body for R represents.
As shown in Figure 1, motorcycle 1 possesses lift-launch power unit, Denso system etc. the steel in each portion or the body shell 2 of aluminum alloy.The main frame 21 of body shell 2 is branch to the left and right from the head tube 22 being positioned at front end towards rear, and oliquely downward extends.At the rear of the rearward end of main frame 21, swing arm bracket 23 extends downward.In addition, the lower pipe 24 of body shell 2 is from head tube 22 towards roughly below extension.In the below of the lower end of lower pipe 24, the bottom tube 25 of branch substantially horizontally extends towards rear and is linked to the underpart of swing arm bracket 23 to the left and right.
The space carrying surrounded at body shell 2 has motor 3.Above motor 3, configure the fuel pot 32 of storage of fuels, be configured with seat 4 at the rear of fuel pot 32.Supporting chair 4 is carried out by the seat guide rail 26 extended rearwardly and upwardly from the rear portion of main frame 21.At rearward end and the sub-frame 27 being connected supplemental support seat guide rail 26 between swing arm bracket 23 of seat guide rail 26.
The space surrounded by seat guide rail 26 and sub-frame 27 is covered by the side cover 11 of pairing left and right.The air cleaner 33 of the air in the space matching filtered atmospheric of the inner side of side cover 11.The side cover 11 of pairing left and right is together fixed on seat guide rail 26 with seat 4.Seat 4 is tandem type seats, is provided with the footrest 12 of driver and the same footrest 13 taking advantage of personnel in the below of seat 4.
The front of the footrest 12 on the left of vehicle body is provided with change pedal 14, and the front of the footrest 12 on the right side of vehicle body arranges the brake petal (not shown) of trailing wheel 6.
In the anterior upside of body shell 2, front fork 51 can be supported for and can turn to by being arranged at the steering shaft of head tube 22.At the suspension that front fork 51 cushions built with front-wheel.Deflecting bar 52 is set in the upper end of steering shaft, at the two ends mounting knob 53 of deflecting bar 52.Front-wheel 5 can be supported on the bottom of front fork 51 rotatably.Be provided with brake disc 54 at front-wheel 5, the front screen 55 that the top of front-wheel 5 is arranged at front fork 51 covers.
Swing arm 61 swingingly can be linked to the swing arm bracket 23 of body shell 2 in the vertical direction, installs the suspension 62 that trailing wheel cushions between body shell 2 and swing arm 61.Trailing wheel 6 can be supported in the rear portion of swing arm 61 rotatably.In addition, sprocket wheel and hold the chain guard 63 of chain after swing arm 61 is provided with.By this rear sprocket wheel and chain, the transmission of power of motor 3 is to trailing wheel 6.Arrange brake disc (not shown) at trailing wheel 6, the top of trailing wheel 6 is covered by framework cover 64 and backboard 65.Above framework cover 64, goods carriage 7 after being provided with in the mode of stretching out at the rear of seat 4.
Motor 3 is made up of 4 circulation single-cylinder engines of horizontal curved shaft type and speed changer.In motor 3, as described later in detail, obtain air by suction tude (sucking pipe) 320, by throttle valve main body 321, air and fuel mix are supplied to firing chamber 308 (reference Fig. 3).The outlet pipe (not shown) that exhaust gas after burning rearward extends via the right flank at motor 3 is discharged from baffler 34.In addition, motor 3 forms the internal-combustion engine being suitable for gas blowby air interchanger of the present invention.
Below, with reference to Fig. 2 ~ Fig. 5, the structure of motor 3 periphery of the motorcycle 1 of present embodiment is described.Fig. 2 is the enlarged view of motor 3 periphery of the motorcycle 1 of present embodiment.Fig. 3 is the motor 3 of the motorcycle 1 of present embodiment and the sectional view of air cleaner 33.Fig. 4 is the sectional view of the A-A of single dotted broken line shown in Fig. 2.Fig. 5 is the motor 3 of the motorcycle 1 of present embodiment and the plan view of air cleaner 33.In addition, in the diagram, omit a part for the lower end of the crankcase 301 forming motor 3, and omit the structure member in motor 3.In addition, in Figure 5, for convenience of explanation, throttle valve main body 321 described later is omitted.
As shown in Figure 2, its upper end portion and front end are hung on the main frame 21 and lower pipe 24 that form body shell 2 by motor 3 by bracket B1, B2.In addition, the rearward end of motor 3 is fixed on swing arm bracket 23.In air cleaner 33, main frame 21 and seat guide rail 26 are fixed with upper end portion and front end respectively.
Motor 3 possesses crankcase 301, be incorporated into the cylinder block 302 on the top of crankcase 301, be incorporated into the cylinder head 303 on the top of cylinder block 302 and be incorporated into the valve mechanism cover 304 on top of cylinder head 303.In the inside of motor 3, the piston 305 being configured at the cylinder-bore 302a in cylinder block 302 is sliding freely connected to the bent axle 306 (with reference to Fig. 3) being rotatably supported in crankcase 301 via connecting rod 307.
As shown in Figure 3, between cylinder block 302 with cylinder head 303, be provided with the firing chamber 308 configured in the mode relative with the top of piston 305.In cylinder head 303, relief opening 309 is set at the front side of firing chamber 308, on the other hand, intakeport 310 is set at the rear side of firing chamber 308.In addition, openedly and closedly can be configured with Aspirating valves 311 and outlet valve 312 in cylinder head 303, this Aspirating valves 311 controls mixed gas from intakeport 310 to the inflow of firing chamber 308, and this outlet valve 312 controls exhaust gas from firing chamber 308 to the outflow of relief opening 309.
Valve cage 313 is provided with between cylinder head 303 and valve mechanism cover 304.The valve mechanism 314 of Aspirating valves 311 and outlet valve 312 is controlled in the collecting of this valve cage 313.Valve mechanism 314 possesses: the camshaft 315 that Aspirating valves 311 and outlet valve 312 utilize jointly; The suction side rocking arm 316 of the opening and closing of Aspirating valves 311; The exhaust side rocking arm 317 of the opening and closing of outlet valve 312; And the restoring mechanism 330 of Aspirating valves 311 and outlet valve 312.
Suction side rocking arm 316 is by being driven in the suction side cam 315a that is located at camshaft 315 and swinging driven for opening and closing Aspirating valves 311.Exhaust side rocking arm 317 is by being driven in the exhaust side cams 315b that is located at camshaft 315 and swinging driven for opening and closing outlet valve 312.The valve spring seat 331 that restoring mechanism 330 has a valve rod being fixed on Aspirating valves 311 and outlet valve 312 and the valve spring 332 of surrounding being configured at valve rod.Valve spring 332 is configured between the lower surface of valve spring seat 331 and the upper surface of cylinder head 303, makes Aspirating valves 311 (outlet valve 312) reset into initial position when relieving the pressing force that suction side rocking arm 316 (exhaust side rocking arm 317) produces.
The pair of openings portion 318 (318a, 318b) of the position adjustment of the structure member (such as Aspirating valves 311 and outlet valve 312) for carrying out valve mechanism 314 etc. is formed in valve mechanism cover 304.These opening portions 318a, 318b are formed at front wall portion and the rear wall parts of valve mechanism cover 304 respectively.The opening portion 318a corresponding with Aspirating valves 311 is configured to be blocked by a part for Pcv valve gate cell 324 described later.On the other hand, corresponding with outlet valve 312 opening portion 318b is configured to be blocked by cover 319.These Pcv valve gate cells 324 and cover 319 are configured to carry out dismounting when the adjustment operation of the position of the structure member of valve mechanism 314.
Not shown transfer mechanism is provided with between the camshaft 315 forming valve mechanism 314 and bent axle 306.This transfer mechanism possesses the cam chain between one end and one end of bent axle 306 being connected to camshaft 315, is configured to the rotating power of bent axle 306 to be slowed down be 1/2 and pass to camshaft 315.As shown in Figure 4, this transfer mechanism cam chain with by above-below direction be formed at the path 302b of cylinder block 302 mode configure.This path 302b is formed as being communicated with valve cage 313 and the crankshaft room 301a in crankcase 301.Cam chain hangs around the bent axle 306 of the camshaft 315 in valve cage 313 and the crankshaft room 301a in crankcase 301.
As shown in Figure 3, throttle valve main body 321 is connected with at the rear side of the intakeport 310 of cylinder head 303 via suction tude 320.This throttle valve main body 321 is configured at the front side of air cleaner 33, connects air cleaner 33 via connecting tube 33a.Throttle valve main body 321 possesses not shown throttle valve in inside.This throttle valve main body 321 adjusts the open and-shut mode of throttle valve according to the throttle valve opening and closing operations of being undertaken by driver, thus controls the suction air quantity from the supply of air cleaner 33 side direction firing chamber 308.
Gas blowby backflow pipe arrangement (hereinafter referred to as " backflow pipe arrangement ") 322 for making the gas blowby in crankcase 301 be back to firing chamber 308 is connected with in suction tude 320.This backflow pipe arrangement 322 is connected with the relief opening 301c of the top of the speed changer room 301b be formed in crankcase 301, on the other hand, is connected with the supplying mouth 320a of the top being formed at suction tude 320.That is, the pipe arrangement 322 that refluxes is derived upward from the speed changer room 301b of crankcase 301, and is connected to the top of suction tude 320.In addition, the gas blowby that the pipe arrangement 322 that refluxes is formed in claims discharges pipe arrangement.
The new gas supplying tubing 323 for the clean new gas of inside being supplied to cylinder head 303 side is provided with at air cleaner 33.Before near the underpart that this new gas supplying tubing 323 is connected to air cleaner 33, on the other hand, be connected with the valve cover 325 of PCV (PositiveCrankcaseVentilation: positive crankcase ventilation (PCV)) valve unit 324 of the opening portion 318a being installed on valve mechanism cover 304.That is, new gas supplying tubing 323 derives upward near the underpart of air cleaner 33, and is connected to the opening portion 318a of valve mechanism cover 304.
At this, during side-looking, the upper side of the intakeport 310 of the opening portion 318a that new gas supplying tubing 323 connects via Pcv valve gate cell 324 and cylinder head 303 is adjacent and configure.In addition, when overlooking, this opening portion 318a is configured at the position (with reference to Fig. 5) overlapped with the elongation line of the central axis B of cylinder-bore 302a.By configuring opening portion 318a like this, can to configure new gas supplying tubing 323 from air cleaner 33 along the mode of air suction way of the combustion air being connected to intakeport 310.Thereby, it is possible to reduce the space of configuration needed for new gas supplying tubing 323, the degrees of freedom of the component layouts of motor 3 can be improved.
At this, with reference to Fig. 6, the structure of Pcv valve gate cell 324 of the opening portion 318a being installed on valve mechanism cover 304 is described.Fig. 6 is the explanatory drawing of the Pcv valve gate cell 324 that the motorcycle 1 of present embodiment possesses.In Fig. 6 A and Fig. 6 B, represent top view and the bottom view of Pcv valve gate cell 324 respectively, in figure 6 c, represent the sectional view of single dotted broken line C-C in Fig. 6 A.In addition, in figure 6, the valve cover 325 (with reference to Fig. 3) that Pcv valve gate cell 324 has is omitted.
As shown in Figure 6, Pcv valve gate cell 324 has: the fixing face 326 of valve mechanism cover being installed on valve mechanism cover 304; The fixing face 327 of valve cover of valve cover 325 is installed; And be installed on the spring valve support 328 that valve cover fixes face 327.In addition, Pcv valve gate cell 324 forms the one-way valve unit in claims.
When overlooking, the fixing face 326 of valve mechanism cover roughly has rectangular, is provided with lip part 326a, 326b at the cornerwise adjacent corner being positioned at a side.The mounting hole 326c of the set screw to valve mechanism cover 304 is formed at these lip parts 326a, 326b.In addition, recess 326d when face 326 is formed with and overlooks with ellipse is fixed in valve mechanism cover.
When overlooking, the fixing face 327 of valve cover roughly has rectangular, is provided with lip part 327a, 327b at the two end part of length direction.The mounting hole 327c of the set screw to valve cover 325 is formed at these lip parts 327a, 327b.In addition, the fixing face 327 of valve cover is formed when overlooking and has rectangular recess 327d.The accommodation section 327e (with reference to Fig. 6 C) of collecting spring valve support 328 is formed above these recesses 327d.
When overlooking, spring valve support 328 roughly has rectangular writing board shape, and is contained in accommodation section 327e (with reference to Fig. 6 C).The roughly OBL through hole 328a when overlooking is formed in the substantially central portion of spring valve support 328.At the lower surface of spring valve support 328, with the mode fixing spring valve 328b relative with through hole 328a, and be fixed with retainer 328c in the lower side of this spring valve 328b.In addition, spring valve 328b forms the one-way valve in right.
When overlooking, spring valve 328b and retainer 328c roughly has rectangular, by screw 328d, one end (left part shown in Fig. 6 C) of length direction is fixed to the lower surface of spring valve support 328.Such as, spring valve 328b by having flexible resin material, metallic material formed, and has thin sheet form.Spring valve 328b functions as follows: allow the new gas from air cleaner 33 side to lead to valve cage 313 effluent, and on the other hand, the air of restriction valve cage 313 side flows backwards to new gas supplying tubing 323 side.The aperture control valve of the negative pressure control standard that spring valve 328b is such as configured to become large according to the negative pressure in valve cage 313 and aperture is diminished.By this spring valve 328b, control the air quantity refluxed when sending into firing chamber 308 via suction tude 320 and burn again.
Retainer 328c is such as formed by having flexible metallic material, and a part for free end side has the thin sheet form of slight curvature.Retainer 328c functions as follows: lead to limit spring valve 328b via spring valve 328b to valve cage 313 effluent at new gas and be out of shape more than certain position.In addition, retainer 328c functions as follows; Spring valve 328b is made to reset into initial position when stopping the circulation via the new gas of spring valve 328b.
Valve mechanism cover fix face 326 recess 326d and valve cover fix face 327 recess 327d between be provided with wall part 329.Carried out the lower surface of regulation recess 326d by the upper surface of this wall part 329, on the other hand, carried out the upper surface of regulation recess 327d by the lower surface of wall part 329.Next door portion 329 is partially formed the through hole 329a being communicated with recess 326d and recess 327d.The new gas led to valve cage 313 effluent via spring valve 328b is admitted to the valve cage 313 in valve mechanism cover 304 via this through hole 329a.
The Pcv valve gate cell 324 with such structure configures in the mode of the opening portion 318a blocking valve mechanism cover 304.At this, the mounting portion of the valve mechanism cover 304 being provided with Pcv valve gate cell 324 is described.Fig. 7 is the explanatory drawing of the valve mechanism cover 304 being provided with Pcv valve gate cell 324.
As shown in Figure 7, the periphery of the opening portion 318a in valve mechanism cover 304 is arranged has stationary plane 304a, and this stationary plane 304a has shape same shape when to fix facial 326 with top view valve mechanism cover.Stationary plane 304a is formed a pair fixed hole 304b of the set screw being inserted with fixing Pcv valve gate cell 324 (being more specifically the fixing face 326 of valve mechanism cover).Pcv valve gate cell 324 is fixed by set screw under making valve mechanism cover fix the face mounting hole 326c of 326 state of aliging with the fixed hole 304b of stationary plane 304a.Thus, Pcv valve gate cell 324 is fixed under the recess 326d state consistent with the opening portion 318a of valve mechanism cover 304 of fixing face 326 in valve mechanism cover.
As shown in Figure 7, when observing from the installation direction of Pcv valve gate cell 324, opening portion 318a is configured near the valve mechanism 314 in valve cage 313.More specifically, in a part for the inner side of opening portion 318a configuration suction side rocking arm 316, and a part (valve spring seat 331, valve spring 332) for the restoring mechanism 330 of Aspirating valves 311 is configured with.By configuring opening portion 318a in this wise near the structure member of valve mechanism 314, the new gas from air cleaner 33 can be made directly to contact these structure members, can the structure member of effective cooling valve mechanism 314.
The gas blowby air interchanger of the internal-combustion engine of present embodiment is configured to comprise backflow pipe arrangement 322, new gas supplying tubing 323 and Pcv valve gate cell 324.Clean new pneumatic transmission in air cleaner 33 is entered cylinder head 303 via new gas supplying tubing 323 by the gas blowby air interchanger of the internal-combustion engine of present embodiment, and sends into (with reference to Fig. 4) in crankcase 301 via the path 302b of cylinder block 302.Further, the gas blowby lodged in crankcase 301 is sent into suction tude 320 via backflow pipe arrangement 322, and be supplied to firing chamber 308 via intakeport 310 together with the new gas from air cleaner 33.Thereby, it is possible to effectively take a breath to the gas blowby lodged in crankcase 301.
At this, be described with reference to Fig. 3, Fig. 4 and Fig. 6 ventilation path to the gas blowby in the gas blowby air interchanger of the internal-combustion engine of present embodiment.As shown in Figure 3, a part for the combustion products generated in firing chamber 308 escapes to crankshaft room 301a as gas blowby between piston 305 and cylinder-bore 302a.So, in order to make the gas blowby lodging in crankshaft room 301a be back to firing chamber 308, the new gas supplying tubing 323 supplied from the new gas of air filter 33 is connected to valve mechanism cover 304.
Path 302b according to the negative pressure state in valve cage 313 from the new gas of new gas supplying tubing 323 supply from valve cage 313 via cylinder head 302 is admitted to the crankshaft room 301a of crankcase 301.By the inflow of so new gas, the gas blowby lodged in crankshaft room 301a is admitted to suction tude 320 via backflow pipe arrangement 322.The new gas sending into suction tude 320 is supplied to firing chamber 308 via intakeport 310 together with the mixed gas from throttle valve main body 321 side.
In the gas blowby air interchanger of the internal-combustion engine of such present embodiment, block by a part for Pcv valve gate cell 324 the opening portion 318a being formed at valve mechanism cover 304.Thereby, it is possible to prevent the space matching spring valve 328b between air cleaner 33 and valve mechanism cover 304, the degrees of freedom of the component layouts of motor 3 can be guaranteed.
In addition, in the gas blowby air interchanger of the internal-combustion engine of present embodiment, owing to configuring spring valve 328b near valve mechanism cover 304, even if therefore in cold environments, the heat produced by cylinder (cylinder-bore 302b) can prevent spring valve 328b because freezing etc. to be difficult to free flowing exercise, can suitably take a breath to the gas blowby produced in motor 3.
Further, in the gas blowby air interchanger of the internal-combustion engine of present embodiment, Pcv valve gate cell 324 is made to be fixed on the position relative with the opening portion 318a being formed at valve mechanism cover 304 and can dismounting.Form Pcv valve gate cell 324 in this wise, thus, by means of only replacing Pcv valve gate cell 324 and cover, just can keep compatible in the vehicle of carrying gas blowby air exchange system and the chien shih valve mechanism cover 304 of the vehicle of not carrying.Thereby, it is possible to reduce the cost needed for manufacture of valve mechanism cover 304.
In addition, the present invention is not limited to above-mentioned mode of execution, can implement various change.In the above-described embodiment, in accompanying drawing, illustrated size, shape etc. are not limited to this, suitably can change in the scope playing effect of the present invention.In addition, can suitably change to implement in the scope not departing from object of the present invention.
Such as, in the above-described embodiment, the situation that Pcv valve gate cell 324 configures in the mode that blocking is formed at the opening portion 318a of valve mechanism cover 304 is illustrated.But, for the position of opening portion 318a being configured with Pcv valve gate cell 324, be not limited to valve mechanism cover 304, can suitably change.Such as, can send into premised on new gas to valve cage 313, the position being configured with the opening portion 318a of Pcv valve gate cell 324 also can be formed at the local of cylinder head 303.Even if when changing the configuration of opening portion 318a like this, also the effect identical with above-mentioned mode of execution can be obtained.
Utilizability in industry
As mentioned above, the present invention has the degrees of freedom of the component layouts can guaranteeing internal-combustion engine and the gas blowby that suitably combustion motor produces carries out the effect of taking a breath, and particularly to possessing, to accumulate the vehicles such as the motorcycle of the internal-combustion engine of gas blowby in crankcase useful.
Claims (9)
1. a gas blowby air interchanger for internal-combustion engine, possesses:
New gas supplying tubing, provides the clean air from air cleaner by the opening portion being formed at cylinder head or valve mechanism cover; Gas blowby discharges pipe arrangement, in crankcase, discharge gas blowby; And one-way valve unit, have one-way valve and be connected to described new gas supplying tubing, this one-way valve only allows air from described air cleaner to described cylinder head or cylinder-head-side circulation,
The feature of described gas blowby air interchanger is, described one-way valve cell location is make a part for described one-way valve unit block described opening portion.
2. the gas blowby air interchanger of internal-combustion engine according to claim 1, is characterized in that,
Described one-way valve unit is fixed on the position relative with described opening portion and can dismounting.
3., according to the gas blowby air interchanger of the internal-combustion engine described in claim 1 or 2, it is characterized in that,
Described opening portion is configured near the structure member of valve mechanism.
4., according to the gas blowby air interchanger of the internal-combustion engine described in claim 1 or 2, it is characterized in that,
During side-looking, described opening portion is configured to adjacent with the upper side of the intakeport of described cylinder head.
5. the gas blowby air interchanger of internal-combustion engine according to claim 3, is characterized in that,
During side-looking, described opening portion is configured to adjacent with the upper side of the intakeport of described cylinder head.
6., according to the gas blowby air interchanger of the internal-combustion engine described in claim 1 or 2, it is characterized in that,
When overlooking, described opening portion is configured at the position overlapped with the elongation line of the axis of cylinder.
7. the gas blowby air interchanger of internal-combustion engine according to claim 3, is characterized in that,
When overlooking, described opening portion is configured at the position overlapped with the elongation line of the axis of cylinder.
8. the gas blowby air interchanger of internal-combustion engine according to claim 4, is characterized in that,
When overlooking, described opening portion is configured at the position overlapped with the elongation line of the axis of cylinder.
9. the gas blowby air interchanger of internal-combustion engine according to claim 5, is characterized in that,
When overlooking, described opening portion is configured at the position overlapped with the elongation line of the axis of cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-208752 | 2014-10-10 | ||
| JP2014208752A JP2016079817A (en) | 2014-10-10 | 2014-10-10 | Blow-by gas ventilation device of internal combustion engine |
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| Publication Number | Publication Date |
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| CN105507984A true CN105507984A (en) | 2016-04-20 |
| CN105507984B CN105507984B (en) | 2018-07-03 |
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| CN201510651136.3A Active CN105507984B (en) | 2014-10-10 | 2015-10-10 | The gas blowby air interchanger of internal combustion engine |
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| CN (1) | CN105507984B (en) |
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| CN109219691A (en) * | 2016-06-03 | 2019-01-15 | 五十铃自动车株式会社 | Engine apparatus |
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| JP5671818B2 (en) * | 2010-03-10 | 2015-02-18 | スズキ株式会社 | Engine breather room layout structure |
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| JP2016079817A (en) | 2016-05-16 |
| CN105507984B (en) | 2018-07-03 |
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