CN100400829C - Throttle system of IC engine - Google Patents
Throttle system of IC engine Download PDFInfo
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- CN100400829C CN100400829C CNB2005100651183A CN200510065118A CN100400829C CN 100400829 C CN100400829 C CN 100400829C CN B2005100651183 A CNB2005100651183 A CN B2005100651183A CN 200510065118 A CN200510065118 A CN 200510065118A CN 100400829 C CN100400829 C CN 100400829C
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Abstract
An offset valve is adopted as the butterfly valve, and the butterfly valve is disposed so that the disk-like part of the butterfly valve is tilted by a prescribed tilt angle relative to a line perpendicular to the center axis of an intake air passage when the outer peripheral part of the butterfly valve is mechanically brought into contact with the inner diameter surface of a throttle body. Thus, since the position of the butterfly valve relative to the inner diameter surface of the throttle body can be adjusted by mechanical touch in assembling the valve, the assembling operation of a throttle shaft with the butterfly valve can be performed in such a state that a clearance formed between the inner diameter surface of the throttle body and the outer peripheral part of the butterfly valve is minimum.
Description
Technical field
The present invention relates to a kind of throttle system of IC engine, it is by changing charge flow rate control engine torque or the engine speed that sucks cylinder of internal-combustion engine.
Background technique
A kind of throttle system of IC engine was once proposed, it controls engine speed by the charge flow rate of the amount of being operated (for example, the rolling reduction of the amount of being operated of solar term bar or accelerator pedal) (referring to Japanese unexamined patent publication file 2000-087765) the change suction cylinder of internal-combustion engine of the operated accelerator of response driver.As shown in Figure 6, in this system, the air inlet path 10 2 of cylindrical throttle-valve body 101 rotatably receives air throttle 104, and it changes angle of swing around the rotating center axis of running shaft 103.The round plate of air throttle 104 (valve body) 105 is along the rotating center axis of the center of the thickness direction of round plate 105 and the running shaft 103 axial dipole field certain distance at air inlet path 10 2.Like this, just might improve entering the leakage of air situation, the origin that the axle support leaks when being considered to air throttle 104 and closing fully from the axle support.
In addition, in the position that air throttle 104 is closed fully, there is an annular small gap between the radial bore wall of the peripheral part of round plate 105 and throttle-valve body 101.The radial bore wall of throttle-valve body 101 comprises ball recess 106, and it is corresponding to the rotate path of the peripheral part of the round plate 105 of air throttle 104.Like this, air throttle 104 is just possible around rotatablely moving of the rotating center axis of running shaft 103.Air throttle 104 is made by resin material.The cylindrical tubular portion integrally formed with round plate 105 (axle side engaging piece) 107 is assembled in the peripheral part of the valve fixing part (valve side engaging piece) of running shaft 103.Like this, throttle-valve body 104 combines with running shaft 103.
In the throttle system of IC engine of Japanese unexamined patent publication file 2000-087765 record, during to the peripheral part of the valve fixing part of running shaft 103, following problem can take place in the cylindrical tubular portion 107 of fixed knot air valve 104.That is exactly, when air throttle 104 is installed to running shaft 103, when the position of the radial bore wall of the peripheral part Mechanical Contact throttle-valve body 101 of the round plate 105 that is in air throttle 104, because the existence of the ball recess 106 of the radial bore wall of throttle-valve body 101, if the round plate of air throttle 104 105 is not fixed by anchor clamps in the upstream side and the downstream side of air inlet path 10 2, air throttle 104 just can be rotated freely.Because this, when air throttle 104 was installed to running shaft 103, air throttle 104 just can not obtain with respect to the position adjustment of the radial bore wall of throttle-valve body 101.That is, when the slit between the radial bore wall of the peripheral part of the round plate 105 of air throttle 104 and throttle-valve body 101 was minimum state, air throttle 104 can not be installed to running shaft 103.Like this, when idle, the amount that enters air of leakage is energy minimization not.
In addition, in the throttle system of IC engine of Japanese unexamined patent publication file 2000-087765 record, when idle or motor do not have serviceability, extend through air throttle 104 round plate 105 the disc thickness center straight line perpendicular to the air inlet path 10 2 of throttle-valve body 101 axially, as shown in Figure 6.Adopt this layout, air throttle 104 is limited in complete closed position rotatablely moving of closing direction, is minimized at the flow of this position air inlet.Air inlet system component (for example, throttle-valve body 101 and air throttle 104) just may be back to the contained dirt (for example, carbon or oil content) of unburned gas of engine air gas handling system by the firing chamber from cylinder and make dirty.When this happens, air throttle 104 possibilities are malfunctioning so that can not be returned to complete closed position, cause the increase of idle speed.Equally, the dirt that the motion of air throttle 104 may be fully closed the position hinders, and therefore driver's acceleration operation can not be carried out reposefully.This can worsen steerability.
Summary of the invention
The purpose of this invention is to provide a kind of internal-combustion engine, the peripheral part by air throttle stops the rotation of air throttle when directly contacting the inner peripheral surface of shell, when being installed to air throttle on the axle, allow air throttle with respect to shell inner peripheral surface position regulation by Mechanical Contact.Another object of the present invention provides a kind of throttle system of IC engine, it makes driver's acceleration smooth operation, and even can when for example shell or the air throttle contained dirt of unburned gas that flowed back to engine aspirating system is made dirty, improve manoeuvring performance at the gas handling system assembly.
For realizing purpose of the present invention, a kind of throttle system of IC engine is provided, it comprises cylinder blanket, axle and air throttle.Cylinder blanket forms gas-entered passageway, and it is along the direction guiding air inlet of gas-entered passageway central axis.Axle has the rotating center axis, and it is basically perpendicular to the central axis of the air inlet passage of shell.Air throttle is integrally mounted on the axle, and by being used for making the minimized complete closed position of flow of air inlet and being used to make the angle of swing that changes air throttle between the maximized fully open position of flow of air inlet to regulate the charge flow rate that sucks cylinder of internal-combustion engine.Air throttle comprises and the corresponding round plate of cross-sectional outer shape.Round plate is offset from the rotating center axis of axle at the central axis direction of air inlet passage.When the peripheral part of round plate directly touched the inner peripheral surface of shell, round plate tilted perpendicular to the vertical line of air inlet channel center axis relatively.
Description of drawings
The present invention with and purpose, feature and advantage, will be understood better by following description, claim and accompanying drawing.Wherein:
Figure 1A is the front view that shows the throttle system of IC engine of first embodiment of the invention.
Figure 1B is the side view that shows first embodiment's throttle system of IC engine.
Fig. 2 is the cross sectional view along the II-II line of Figure 1B.
Fig. 3 A is the cross sectional view along the IIIA-IIIA line of Figure 1B.
Fig. 3 B is the enlarged view of Fig. 3 A middle section IIIB.
Fig. 4 A is the schematic representation of the butterfly valve that shows first embodiment's throttle system of IC engine air draught when opening fully.
Fig. 4 B is the schematic representation of the butterfly valve that shows first embodiment's throttle system of IC engine air draught when closing fully.
Fig. 5 A is the schematic representation of the butterfly valve that shows the throttle system of IC engine of second embodiment of the invention air draught when opening fully.
Fig. 5 B is the schematic representation of the butterfly valve that shows the throttle system of IC engine of second embodiment of the invention air draught when closing fully.
The cross sectional view that shows the previous throttle system of IC engine that proposes during Fig. 6.
Embodiment
(first embodiment)
Figure 1A describes the first embodiment of the present invention to Fig. 4 B.More specifically be that Figure 1A describes first embodiment's throttle system of IC engine to Fig. 4 B.
The throttle system of IC engine of present embodiment is a kind of amount of being operated according to the operated accelerator pedal of driver, change and (for example be fed into internal-combustion engine, the motor of motorcycle will be known as motor hereinafter) the internal-combustion engine gas saving system of charge flow rate.The internal-combustion engine gas saving system comprises throttle-valve body (shell) 1, accelerator support 3, solar term valve shaft (running shaft, valve live axle, valve drive) 4, accelerator lever (rotation driving body, valve drive) 5 and butterfly valve (air throttle) 6.Throttle-valve body 1 conduction flow is to the air that enters of cylinder.Accelerator support 3 tightly is fixed to the outer wall surface of the cylindrical tubular air throttle hole wall (side wall of outer shell, cylindrical tubular portion: hereinafter be called hole wall) of throttle-valve body 1.Solar term valve shaft 4 is rotatably supported by throttle-valve body 1.Accelerator lever 5 forms with an axial end of solar term valve shaft 4.Butterfly valve 6 is with accelerator lever 5 rotations.
In the present embodiment, throttle-valve body 1, solar term valve shaft 4 and butterfly valve 6 each all make to reduce weight and manufacture cost by resin material.Particularly, the non-cylindrical valve side engaging piece 8 of the non-cylindrical axle side engaging piece 7 of solar term valve shaft 4 and butterfly valve 6 each all make by resin material.And the connection between the axle side engaging piece 7 of air throttle 4 and the axle side engaging piece 8 of butterfly valve 6 is by fixing such as thermal welds such as laser beam welding.Throttle system of IC engine also comprises Returnning spring (valve advancing means, elastomer) 9, and it promotes the complete closed position that butterfly valve 6 is minimized to charge flow rate.
Throttle-valve body 1 is fully by the Unitarily molded moulded resin products of for example thermoplastic resin material's resin material.Resin material can be the heat stable resin material, for example polybutylene-terephthalate (PBT), polyphenylene sulfide (PPS), polyamide resin (PA), polypropylene (PP) or Polyetherimide (PEI).Throttle-valve body 1 is the device that receives rotationally with supporting section valve shaft 4 and butterfly valve 6.Form in the hole wall portion 2 of throttle-valve body 1 and enter air passageways (solar term valve opening) 10, conduction enters air to cylinder.Butterfly valve 6 rotatably is installed to the center that enters air passageways 10.
The first cylindrical shaft support 11 is formed in the left end surface of the hole wall portion 2 shown in Fig. 3 A and Fig. 3 B, extends from the radially-outer surface of hole wall portion 2 left direction to Fig. 3 A and Fig. 3 B.First support 11 be an axle head of supporting section valve shaft 4 rotatably.The left end of described first support 11 opens wide.Like this, the opening of first support 11 (first sliding eye 13) is used for the axle side engaging piece 7 of solar term valve shaft 4 is installed to the air inlet path 10 as the axle sliding eye.The second cylindrical shaft support 12 is formed on the right-hand member surface of the hole wall portion 2 shown in Fig. 3 A, extends from the radially-outer surface of hole wall portion 2 right direction to Fig. 3 A.Second support 12 be another axle head of supporting section valve shaft 4 rotatably.The right-hand member of described second support 12 plug closes (not shown).
In first and second supports 11,12, form first and second sliding eyes 13,14, so that solar term valve shaft 4 is installed slidably with circular cross section.On the peripheral surface of first support 11, form the inboard guide portion 15 of helical spring, be used for and Returnning spring 9 engagements.Oil sealing 16 is installed between the peripheral surface of the end (described left end) of first support 11 and solar term valve shaft 4.On left end surface shown in the hole wall portion 2, form the side hook portion, be used for spring side hook portion engagement with Returnning spring.
As shown in Figure 2, the air inlet path 10 of throttle-valve body 1 is the inlet passage of air, has circular cross section and enters air in axial conduction.The air inlet path 10 comprises air inlet and air outlet slit.The air inlet of air inlet path 10 is used for by the engine charge pipeline from air filter (not shown) picked-up air, and air outlet slit is used to export and enters the intake manifold (not shown) of air to equalizing tank or motor.As shown in Figure 2, on the conduit wall surface of gas-entered passageway 10, that is, form conical surface 17 on the radial bore surface (inner peripheral surface of shell) of the hole wall portion 2 of throttle-valve body 1.The outer part of butterfly valve 6 (the first and second radially outer ends 21,22) can direct mechanical contact conical surface 17.Conical surface 17 convergents and have the diameter that reduces, diameter reduces towards downstream gradually along entering air flow.Conical surface 17 forms the valve engaging piece, and when the first and second radially outer ends of butterfly valve 6,21,22 direct mechanical contact conical surface 17, the valve engaging piece limits being further rotated of butterfly valve 6 along the complete closing direction to complete closed position.
To shown in Figure 2, by the pressure processing such as cold rolled sheet sheet metals such as (SPCC), accelerator support 3 is a reservation shape by unitary moulding as Figure 1A.Accelerator support 3 is installed on the base portion 19 by the support that for example screw (fastening screw trip bolt) 23 is fixed to throttle-valve body 1.In addition, claw portion 24 and close side brake 26 fully and be formed on the accelerator support 3.But claw portion 24 opens the side wire rope by the reciprocating manner maintaining valve and valve cuts out the side wire rope.The side brake portion that closes fully 25 of accelerator lever 5 is the tabular break 26 of engagement indirectly.When butterfly valve 6 cut out fully, the Surface of action of closing side brake portion 25 fully (closing the side engaging piece fully, first engaging piece) of closing side brake 26 and accelerator lever 5 fully was relative.
As Figure 1A to shown in Figure 2, closing fully in the side brake 26 of present embodiment, the thickness direction that screw hole (the not internal thread screw hole of Xian Shiing) penetrates accelerator support 3 together with close fully side brake 26 shown in the upper-end surface with shown in the lower end surface.The idling aperture is regulated bolt (idling aperture adjusting screw) 27 and is fixed to the screw hole of closing side brake 26 fully by screw thread, so that the mating surface that side brake portion 25 is closed in direct engagement fully when butterfly valve 6 cuts out fully.Hexagon nut 29 is fixed to the idling aperture by screw thread and regulates on the bolt 27.
The end (described lower end) that the idling aperture is regulated bolt 27 is closed side engaging piece (first engaging piece) fully as what the idling aperture was regulated bolt 27, it meshes the Surface of action of closing side brake portion 25 fully of accelerator lever 5 when butterfly valve 6 cuts out fully, so that restriction butterfly valve 6 is further rotated along closing direction when the idle position of butterfly valve 6 (closed position fully).The idling aperture regulates bolt 27 and hexagon nut 29 is formed idling aperture controlling mechanism.Idling aperture controlling mechanism regulate the idling aperture regulate bolt 27 from close fully side brake 26 shown in the amount protruded towards the side brake portion that closes fully 25 of accelerator lever 5 of lower end surface, with the complete closed position of qualification butterfly valve 6, thus the air throttle aperture (idling aperture) of when idle, regulating butterfly valve 6.
Tabular open the side brake (not shown) fully and accelerator support 3 forms.When opening butterfly valve 6 fully, what the side brake portion that opens the fully (not shown) of accelerator lever 5 directly meshed accelerator support 3 opens side brake fully.When opening butterfly valve 6 fully, the Surface of action of opening side brake portion fully (opening the side engaging piece fully, second engaging piece) of opening side brake and engagement accelerator lever 5 of accelerator support 3 is relative.Side engaging piece (second engaging piece) is opened in the side brake conduct of opening fully of accelerator support 3 fully, when butterfly valve 6 is opened fully, when the Surface of action of opening side brake portion fully of accelerator lever 5 directly mesh accelerator support 3 open side brake fully the time, be used for the fully open position of butterfly valve 6 restriction butterfly valve 6 rotatablely moving along butterfly valve 6 closing directions.
Here, the throttle system of IC engine of present embodiment comprises solar term valve shaft 4 and is used at closing direction and the accelerator lever 5 of opening direction driving butterfly valve 6 as valve drive.Solar term valve shaft 4 is with butterfly valve 6 rotations, and an end of accelerator lever 5 and solar term valve shaft 4 forms.Throttle system of IC engine changes the angle of swing of butterfly valve 6 according to the amount of being operated (for example amount of being operated of solar term bar) of the accelerator that the driver handled.Solar term valve shaft 4 comprises a side engaging piece 7, and it is by making such as resin materials such as thermoplastic resins.Resin material can be the heat stable resin material, for example polybutylene-terephthalate (PBT), polyphenylene sulfide (PPS), polyamide resin (PA), polypropylene (PP) or Polyetherimide (PEI).The divergence type metallic member clipped object of being made by metallic material (for example SUS304 stainless steel) is molded into a side engaging piece 7, so that strengthen the resin molded part such as axle side engaging piece 7 grades.
The axle side engaging piece 7 of solar term valve shaft 4 is non-cylinder valve fixing parts (resin shaft), and the valve side engaging piece of butterfly valve 68 is fixed on it by the thermal weld such as laser beam welding.Two planes (radially relative planar surface portion) 31 are formed on an outer surface of side engaging piece 7, so that increase weld strength when laser beam welding.The outer surface of all the other the side engaging pieces beyond two planes 31 forms arc shaped surface, and its radian center is on the central axis (axis, rotating center) of solar term valve shaft 4.
The divergence type metal parts comprises metal shaft 32 and metal tube 33.Metal shaft 32 is extended from the whole axis scope of an end face to another end face along solar term valve shaft 4 of solar term valve shaft 4 as the center plug.Cylindrical metal tube 33 is installed around the outer surface of metal shaft 32, makes between metal shaft 32 and metal tube 33 cylindrical space to be set partly.Form columniform minor diameter with the engaging piece of the metal shaft 32 of the solar term valve shaft 4 of axle side engaging piece 7 engagement.Be positioned at the outer surface that a surface portion of the right side axle head of the metal shaft 32 on side engaging piece 7 right sides is exposed to solar term valve shaft 4.The portion of exposing of the right side axle head of metal shaft 32 forms columniform large-diameter portion, is rotatably supported by the inner peripheral surface of second sliding eye 14 of second support 12 of the hole wall portion 2 of throttle-valve body 1 as the second supporting slide part.
The metal tube 33 of solar term valve shaft 4 meshes with the outer surface of the left side axle head (axle head) of axle side engaging piece 7.This engaging piece of metal tube 33 is exposed to the outer surface of solar term valve shaft 4.Slide part supports by the rotatable support of inner peripheral surface of first sliding eye 13 of first support 11 of the hole wall portion 2 of throttle-valve body 1 as first in the portion of exposing of metal tube 33.Here, as shown in Figure 2, the solar term valve shaft 4 of present embodiment is arranged as follows: the rotating center axis of metal shaft 32 is positioned at eccentric position, and it is along a central axis skew intended distance (L) of the air inlet path 10 of radially downward direction and throttle-valve body 1.
The heavy section 46 of boss shape is arranged on the rear surface of accelerator lever 5, and the heavy section 46 of accelerator lever 5 protrudes towards the radially-outer surface side of the hole wall portion 2 of throttle-valve body 1 from the remaining part of accelerator lever 5.Close side brake portion 25 fully and open side brake portion fully and adopt and resin moldedly to form with heavy section 46.Here, close the directly end surface of engagement idling aperture adjusting bolt 27 of side brake portion 25 fully, when closing butterfly valve 6 fully, it is accelerated the side brake 26 of closing fully of device support 3 and fixes firmly, and when opening butterfly valve 6 fully, that opens fully that side brake portion directly meshes accelerator support 3 opens side brake fully.Lever side hook portion (not shown) is formed with heavy section 46, so that be meshed with the spring side hook portion of Returnning spring 9.
Non-cylindrical valve side engaging piece 8 and round plate (valve body) 47 are formed on the butterfly valve 6.When valve side engaging piece 8 was installed to the peripheral part of axle side engaging piece 7 of solar term valve shaft 4, valve side engaging piece 8 was firmly fixed.Round plate (valve body) 47 is connected to valve side engaging piece 8 and extends in the tangent direction of valve side engaging piece 8.The valve side engaging piece 8 of butterfly valve 6 meshes with the peripheral part of the axle side engaging piece 7 of solar term valve shaft 4, and employing connects such as thermal welds such as laser beam welding.Valve side engaging piece 8 comprises the portion that narrows down (press fit) 48, and it is press fit into the peripheral part of the axle side engaging piece 7 of solar term valve shaft 4.The portion 48 that narrows down is positioned at center or at least one end (left side or right-hand member described in Fig. 3 A) of the engaging piece of the valve side engaging piece 8 that is meshed with the axle side engaging piece 7 of solar term valve shaft 4.
Racetrack through hole (engaging hole) 49 is formed on the valve side engaging piece 8, axial penetration valve side engaging piece 8.Two planes (radially opposite planar portion) are positioned at the inner peripheral surface of valve side engaging piece 8, corresponding to two planes (radially opposite planar portion) 31 of the outer surface of the axle side engaging piece 7 that is arranged on solar term valve shaft 4.This structure prevents the relative rotation of the valve side engaging piece 8 of the axle side engaging piece 7 of solar term valve shaft 4 and butterfly valve 6.Each outer surface of valve side engaging piece 8 and all the other inner peripheral surfaces except that two planes (radially opposite planar portion) have arcuate surface, and its radian center is on the central axis of valve side engaging piece 8.
The round plate 47 of butterfly valve 6 is made into disc type, forms corresponding to the shape of cross section of the hole wall part 2 of throttle-valve body 1 and with valve side engaging piece 8.Round plate 47 comprises the first semi-disc part 51 and the second semi-disc part 52.When opening butterfly valve 6 to several angle from complete closed position, the first semi-disc part 51 is positioned at the upstream side of air-flow direction.When opening butterfly valve 6 to several angle from complete closed position, the second semi-disc part 52 is positioned at the downstream side of air-flow direction.The first semi-disc part, the 51 relative second semi-disc parts 52 are subjected to air inlet more to be influenced.In addition, for the interference of the conical surface 17 of the hole wall portion 2 that limits throttle-valve body 1, the rotating center axis of solar term valve shaft 4 is positioned at eccentric position, and it is from the central axis skew certain distance (L) of air inlet passage 10.Like this, the surface area of the first semi-disc part 51 becomes bigger than the second semi-disc part 52.Trapezoidal substantially strengthening rib 53,54 is set on the end face of the first and second semi-disc parts 51,52 so that strengthen butterfly valve 6.Have the semicircular first radial outer end part 21 and be set to the peripheral part of first semi-circular cross-section 51.Have the semicircular second radial outer end part 22 and be set to the peripheral part of second semi-circular cross-section 52.
In the present embodiment, the complete closed position of butterfly valve 6 is configured to from contact position along butterfly valve 6 the direction of opening and moves predetermined angle (for example θ+1～2 degree), at this contact position, the radial bore surface (particularly conical surface 17) of the hole wall portion 2 of the first and second radial outer end parts, 21, the 22 Mechanical Contact throttle-valve bodies 1 of round plate 47.Like this, when butterfly valve 6 was fully closed on the angle of swing of complete closed position corresponding to it, the plane of a center line that extend at the disc thickness center of the round plate 47 by butterfly valve 6 or an end face of round plate 47 was relatively perpendicular to the vertical curve predetermined oblique angle (for example θ+1～2 degree) of the central axis of the air inlet path 10 of throttle-valve body 1.
The manufacture method of the throttle system of IC engine of present embodiment is described to Fig. 4 B with reference to Figure 1A.
At first, the spring side hook portion of Returnning spring 9 is installed in the main body side hook portion, and the main body side hook portion is positioned on the radially-outer surface (described left end surface) of the hole wall portion 2 of throttle-valve body 1.In addition, the left side of described Returnning spring 9 is meshed with the inboard guide portion 15 of helical spring, and guide portion 15 is positioned on the outer wall surface (described left end surface) of the hole wall portion 2 of throttle-valve body 1.Adopt this mode, Returnning spring 9 is installed in the radially-outer surface (described left end surface) of the hole wall portion 2 of throttle-valve body 1.Then, butterfly valve 6 is inserted into the air inlet path 10 of the hole wall portion 2 that is arranged in throttle-valve body 1, like this, the central axis of the through hole (engaging hole) 49 of the valve side engaging piece 8 of butterfly valve 6 is in line along straight line with the central axis that is positioned at first and second sliding eyes 13,14 on first and second support 11,12 of throttle-valve body 1.
Then, in order solar term valve shaft 4 is inserted into first sliding eye 13,49 and second sliding eyes 14 of through hole (engaging hole) from the left end of first support 11 of described throttle-valve body 1, solar term valve shaft 4 is installed on the throttle-valve body 1.Then, the spring side hook portion of Returnning spring 9 is seated in the lever side hook portion of the outer wall surface (described right side) of the accelerator lever 5 of solar term valve shaft 4.Equally, the left side of described Returnning spring 9 is seated in the peripheral part of the inboard guide portion 45 of helical spring of the outer wall surface (described right side) of accelerator lever 5.Adopt this mode, Returnning spring 9 is installed between the outer wall surface (described right side) of accelerator lever 5 of the radially-outer surface (described left side) of the hole wall portion 2 of throttle-valve body 1 and solar term valve shaft 4.
Then, as previously discussed, on the hole wall 2 of throttle-valve body 1, when the peripheral part engagement of the valve side engaging piece 8 of butterfly valve 6 and the axle side engaging piece 7 of solar term valve shaft 4, first and second radial outer ends part (peripheral part) 21,22 of the round plate 47 of butterfly valve 6 is placed with the radial bore surface (particularly conical surface 17) that direct mechanical contacts the hole wall portion 2 of throttle-valve body 1.Then, the valve assembly of this state is installed to (not shown) on the anchor clamps of laser welding system.Anchor clamps are configured to for example can move back and forth in certain width.Laser device is placed to the anchor clamps top.In laser device, laser beam is by laser oscillator output and by such as lens polymerization, and therefore, laser beam is directed into the outer wall surface of the valve side engaging piece 8 of the butterfly valve 6 that is arranged in hole wall portion 2.The laser oscillator of laser device is a semiconductor laser oscillator, has the laser output power of 20w to 30w.It should be noted that laser oscillator can be other any laser oscillators such as pulsed yttrium aluminum garnet (YAG) laser oscillator or CO2 laser oscillator etc.The travelling speed of anchor clamps is set to about 10mm/s.
When outer wall surface from the laser oscillator outgoing laser beam of laser device to the valve side engaging piece 8 of butterfly valve 6, anchor clamps along solar term valve shaft 4 move axially and along swinging back and forth perpendicular to solar term valve shaft 4 axial directions.At this moment, laser beam clashes into and penetrates the valve side engaging piece 8 of butterfly valve 6, and the peripheral surface of the peripheral surface of the axle side engaging piece 7 of the laser beam that sees through arrival solar term valve shaft 4 and quilt axle side engaging piece absorbs.This laser beam irradiation causing fusing of the peripheral surface of side engaging piece 7.Equally, the heat of the outer surface fusing generation of axle side engaging piece 7 causes the fusing of the inner wall surface of valve side engaging piece 8.Like this, the inner peripheral surface of the outer surface of axle side engaging piece 7 and valve side engaging piece 8 is by thermal weld mutually.
In the present embodiment, on the break even chart face (radially relative planar surface portion) 31 of the axle side engaging piece 7 of solar term valve shaft 4, and also on the break even chart face (radially relative planar surface portion) of the valve side engaging piece 8 of butterfly valve 6, axially around the portion that narrows down (press-fitted portions) 48 of the valve side engaging piece 8 of butterfly valve 6, carry out laser bonding along the axle side engaging piece 7 of solar term valve shaft 4.Specifically be, along the front side of the break even chart face (radially relative planar surface portion) of valve side engaging piece 8 and the single to-and-fro motion of rear side, all carry out laser bonding by anchor clamps at the front side and the rear side of the break even chart face (radially relative planar surface portion) of the valve side engaging piece 8 of butterfly valve 6.
As a result, comprising that the throttle system of IC engine of throttle-valve body 1, solar term valve shaft 4, butterfly valve 6 and Returnning spring 9 is manufactured goes out.When top manufacture method and manufacturing process were used, the quantity of assembly and the quantity of manufacturing step can advantageously be reduced.
The effect of the throttle system of IC engine of present embodiment will be described to Fig. 4 B with reference to Figure 1A.Fig. 4 A is the schematic representation that shows the air flows when opening butterfly valve fully, and Fig. 4 B is the schematic representation that shows the air flows when closing butterfly valve fully.
When the driver operated the solar term bar, the Driving force that the accelerator lever 5 that is mechanically connected to the solar term bar by wire rope overcomes Returnning spring 9 was rotated a respective angles, and this angle is corresponding to the amount of being operated of solar term bar.Then, the rotation of accelerator lever 5 is passed to solar term valve shaft 4.After 4 rotations of solar term valve shaft, butterfly valve 6 is rotated identical angle of swing, and this angle is identical with the angle of swing of accelerator lever 5, and is just, identical with the angle of swing of solar term valve shaft 4.Like this, the air inlet path 10 that the is connected to cylinder several angle that is opened is so engine rotary speed is changed the amount of being operated with corresponding solar term bar.
At this moment, when the driver moved the solar term bar to the fully open position, accelerator lever 5 meshed up to the side brake portion that opens fully of accelerator lever 5 and the side brake portion that opens fully of accelerator support 3 along normal sense of rotation (opening direction) rotation.When the side brake portion that opens fully of accelerator lever 5 and the side brake portion that opens the fully engagement of accelerator support 3, and accelerator lever 5 along open being further rotated of direction be accelerated device support 3 open the side brake restriction fully the time, butterfly valve 6 is maintained at the fully open position of inside, hole of the hole wall portion 2 of throttle-valve body 1, just, the fully open position in the air inlet path 10.Like this, shown in Fig. 4 A, the flow that the air inlet path 10 of the hole wall portion 2 by being arranged in throttle-valve body 1 is inhaled into the air inlet of cylinder is maximized, so engine rotational speed increases.
On the contrary, when the driver turned back to complete closed position with the solar term bar, because the Driving force of Returnning spring 9, solar term valve shaft 4, accelerator lever 5 and butterfly valve 6 were returned to their initial position (idle position).At this moment, the Driving force of accelerator lever 5 by Returnning spring 9 along opposite sense of rotation (closing direction) rotation up to accelerator lever 5 close the end surface engagement that side brake 25 and idling aperture are regulated bolt 27 fully, this adjustings bolt is accelerated the side brake 26 of closing fully of device support 3 and firmly fixes.When the side brake portion that closes fully 25 of accelerator lever 5 and the end surface engagement of idling aperture adjusting bolt 27, therefore and accelerator lever 5 is when being further rotated of closing direction regulated bolt 27 restrictions by the idling aperture, butterfly valve 6 is maintained at the complete closed position of inside, hole of the hole wall portion 2 of throttle-valve body 1, just, the complete closed position in the air inlet path 10.Like this, shown in Fig. 4 B, the flow that the air inlet path 10 of the hole wall portion 2 by being arranged in throttle-valve body 1 is inhaled into the air inlet of cylinder is minimized, so engine rotational speed is set to idle speed.
As previously discussed, in throttle system of IC engine, have along the eccentric valve of the round plate 47 that axially is offset in the downstream side of the rotating center axis of solar term valve shaft 4 of air inlet path 10 and be used as butterfly valve 6, its regulates the flow of the air inlet that sucks cylinder.In addition, being arranged to of butterfly valve 6, the feasible first and second radial outer end parts 21 of working as the disk 47 of butterfly valve 6, during the radial bore surface (specifically being conical surface 17) of the hole wall portion 2 of 22 direct mechanical contacts throttle-valve body 1, along the disc thickness center of the round plate 47 of butterfly valve 6 or the center line that extends of the plane of an end face of round plate 47 with respect to vertical line predetermined oblique angle (θ) perpendicular to the central axis of the air inlet path 10 of throttle-valve body 1.In addition, the radial bore surface of the hole wall portion 2 of throttle-valve body 1 has conical surface (valve engaging piece) 17, it can limit butterfly valve 6 being further rotated along closing direction by the Mechanical Contact of the first and second radial outer end parts, 21, the 22 same conical surfaces (valve engaging piece) 17 of the disk 47 of butterfly valve 6.
Like this, can when assembling, limit by valve the rotation of butterfly valve 6, so that the state on the radial bore surface (particularly conical surface 17) of the hole wall portion 2 of the first and second radial outer end parts, 21,22 Mechanical Contact throttle-valve bodies 1 that will be by the disk that is fastened on butterfly valve 6 47 that between the valve side engaging piece 8 of the axle side engaging piece 7 of solar term valve shaft 4 and butterfly valve 6, forms such as the thermal weld of laser bonding etc.Therefore, when valve assembles, just might realize the position regulation of butterfly valve 6 with respect to the radially inner peripheral surface of throttle-valve body 1 by Mechanical Contact.Therefore, solar term valve shaft 4 and butterfly valve 6 can be assembled in the first and second radial outer end parts 21 of radially inner peripheral surface (specifically being conical surface 17) with the round plate 47 of butterfly valve 6 of the hole wall portion 2 that is in throttle-valve body 1 together, each spacing in 22 between one of corresponding is minimized, so when cut-off valve (fully) enters leakage of air and can be minimized when idle.
Here, the air filter that air is installed in air cleaner that enters that is directed into the air inlet path 10 of hole wall portion 2 inside that are arranged in throttle-valve body 1 filters to remove foreign particle.Yet the air inlet path 10 of throttle-valve body 1 is not removed and may import to particle that might be little by air filter.In addition, when cycle of opening of cycle of opening of the suction valve that is used to open and close corresponding cylinder suction port and the outlet valve that is used to open and close cylinder exhaust port during overlaid, because from the blowback of motor respective combustion chamber, black smoke just might flow back to the air inlet path 10.Particularly, gas handling system assembly (for example, throttle-valve body 1 or butterfly valve 6) the contained dirt (for example, carbon or oil content) of unburned gas that just may be back to engine aspirating system from cylinder is made dirty.When dirt is gone up accumulation on the radial bore surface (particularly conical surface 17) of the hole wall portion 2 of butterfly valve 6 and throttle-valve body 1, and when hardening during the motor off-duty, the foul that butterfly valve 6 just may be hardened firmly is maintained in its closed position.In this case, even the solar term bar is operated when engine start, the first and second radial outer end portions 21,22 can not move from complete closed position, so the level and smooth rotation of butterfly valve 6 is hindered.
Like this, in throttle system of IC engine, when butterfly valve 6 is fully closed on the angle of swing of complete closed position corresponding to it, along the disc thickness center of the round plate 47 of butterfly valve 6 or the center line that extends of the plane of an end face of round plate 47 with respect to vertical line predetermined oblique angle (for example θ+1～2 degree) perpendicular to the central axis of the air inlet path 10 of throttle-valve body 1.Thereby, even (for example work as the air inlet system component, throttle-valve body 1 or butterfly valve 6) be back to from cylinder the engine air gas handling system such as the contained dirt of unburned gas (for example, carbon or oil content) to make dirty, the cohesive force (cohesion) that goes up the dirt of accumulation on the radial bore surface (conical surface 17) of the hole wall portion 2 of butterfly valve 6 or throttle-valve body 1 can be reduced.Like this, the solar term bar is operated when engine start, and butterfly valve 6 can be removed from the radial bore surface (particularly conical surface 17) of hole wall portion 2 like a dream.Therefore, just can prevent butterfly valve 6 level and smooth interference of rotating.Like this, just can obtain corresponding air throttle aperture, this aperture is corresponding to the amount of being operated of solar term bar, and can obtain the engine output (engine rotational speed) corresponding to the amount of being operated of solar term bar.Adopt this mode, the automobile steerability can be enhanced.
In addition, when the complete closed position of butterfly valve 6 is configured to from the first and second radial outer end parts 21 of the round plate 47 that makes butterfly valve 6, when the position of predetermined angle of swing is moved in the valve mounting point on the radial bore surface of 22 direct mechanical contact throttle-valve body 1, when engine idle, repeatedly direct contact between the first and second radial outer end parts 21,22 of the radial bore surface (particularly conical surface 17) that just might prevent the hole wall portion 2 of throttle-valve body 1 and the round plate 47 of butterfly valve 6.Like this, the life-span of butterfly valve 6 or throttle-valve body 1 can be enhanced.
Here, the solar term valve shaft 4 of present embodiment is arranged as follows: the rotating center axis of solar term valve shaft 4 is positioned at eccentric position, the central axis skew intended distance (L) of this eccentric position along downward direction radially from the air inlet passage 10 of throttle-valve body 1.Adopt this mode, when closing direction rotates, just may prevent that the first and second radial outer end parts 21,22 of the round plate 47 of butterfly valve 6 are stuck on the radial bore surface (particularly conical surface 17) of the hole wall portion 2 of throttle-valve body 1 at butterfly valve 6.Like this, even the driving force of butterfly valve 6 (operation power) is little, butterfly valve 6 also can be along opening direction smoothed rotation towards the fully open position when operation solar term bar.
Here, the solar term valve shaft 4 of present embodiment is arranged as follows: the rotating center axis of solar term valve shaft 4 is positioned at eccentric position, the central axis skew certain distance (L) of this eccentric position along downward direction radially from the air inlet passage 10 of throttle-valve body 1.Adopt this mode, surface area is disposed in the upstream side of the second semi-disc part 52 than the second semi-disc part, the 52 first big semi-disc parts 51, and the surface area of the second semi-disc part 52 is littler than the first semi-disc part 51.Like this, the valve of butterfly valve 6 cuts out torque and is increased.Do like this, even when advancing the spring of butterfly valve 6 to be blocked to complete closed position, valve cuts out torque and produces in the first semi-disc part 51 by air inlet, and butterfly valve 6 is turned back to complete closed position.Like this, such as faults such as Returnning spring 9 are blocked the time, just may limit the incident generation that butterfly valve 6 does not turn back to complete closed position.
In addition, throttle-valve body 1, solar term valve shaft 4, accelerator lever 5 and butterfly valve 6 each all make by resin material.Like this, the weight of throttle system of IC engine and manufacture instinct and be reduced.Equally, by such as the connection between the valve side engaging piece 8 of the axle side engaging piece 7 of the thermal weld fixed knot valve shaft 4 of laser bonding etc. and butterfly valve 6, and do not use the peripheral part of the valve side engaging piece 8 of the butterfly valve 6 that is threaded to the axle side engaging piece 7 of solar term valve shaft 4.Like this, just do not adopt fixing bolt or screw in the connection, so the quantity of the quantity of assembly and installation step can be reduced.
(second embodiment)
Fig. 5 A and 5B are the schematic representation that shows second embodiment.Particularly, Fig. 5 A is the schematic representation that shows the air flows when opening butterfly valve fully, and Fig. 5 B is the schematic representation that shows the air flows when closing butterfly valve fully.
In first embodiment's eccentric-butterfly-valve 6, used circular cone hole wall portion 2, the cross section of its passage successively decreases towards the downstream side along air-flow direction, shown in Fig. 4 A, when butterfly valve 6 is opened fully, entering air draught will be hindered between the radial bore surface of the hole wall portion 2 of end face of the second semi-disc part 52 of butterfly valve 6 and relative throttle-valve body 1.This just may cause the pressure loss of the air inlet in the air inlet passage 10 of hole wall portion 2 of throttle-valve body 1.Like this, when the diameter of the hole wall portion 2 of throttle-valve body 1 was increased, the size of the hole wall portion 2 of throttle-valve body 1 also was increased, and the holding space that causes being used to holding it increases.
Consider above problem, in the present embodiment, the round plate 47 of butterfly valve 6 is by local buckling, so that provide sufficient channel cross-section between the radial bore surface of the hole wall portion 2 of end face of the second semi-disc part 52 of butterfly valve 6 and throttle-valve body 1 when opening butterfly valve 6 fully.Specifically be, the second semi-disc part 52 of butterfly valve 6 is with respect to the rotating center axis direction bending of the first semi-disc part 51 towards solar term valve shaft 4, so the second semi-disc part 52 is with respect to the first semi-disc part, 51 place plane inclination predetermined angles (for example, this angle is identical with respect to axial angle with conical surface 17 usually).Adopt this mode, when opening butterfly valve 6 fully, just may reduce the resistance of air that enters of air inlet path 10, and need not increase the diameter (size) of the hole wall portion 2 of throttle-valve body 1.Therefore, when opening butterfly valve 6 fully, just may increase the charge flow rate (flow of air inlet when opening fully) in the air inlet path 10 of hole wall portion 2 of throttle-valve body 1.Alternatively, the round plate 47 of butterfly valve 6 can be bent to and have predetermined curvature.
The present invention is not limited to the foregoing description, and therefore the foregoing description can be done following change.
At the foregoing description, accelerator lever 5 is formed on an end of the axle side engaging piece 7 of solar term valve shaft 4.Alternatively, lever side engaging piece can be arranged on the inner periphery portion of accelerator lever 5.Like this, can be by such as being connected between the lever side engaging piece of the axle side engaging piece 7 of the thermal weld fixed knot valve shaft 4 of laser bonding etc. and accelerator lever 5.In addition, accelerator lever 5 can be modified and be the rotatable driving body such as valve gear etc.In this case, butterfly valve 6 rotates with the valve gear through reduction gear by the actuating mechanism such as motor etc.
In the above-described embodiments, the resin molded part of solar term valve shaft 4 particularly axle side engaging piece 7 for example metal shaft 32 and metal tube 33 are strengthened by metallic material.Alternatively, the resin molded part of solar term valve shaft 4 (particularly axle side engaging piece 7) can be strengthened with a metal center mandrel material or metal tube material.In addition, metal tube 33 can be made by a plurality of arc metalworks, and they are along axial arranged formation cylindrical structural.Alternatively, a plurality of metal cylinders can be along axially arranging one by one.In addition, solar term valve shaft 4 also can whole be made by metallic material.
For the interlock (join strength) between the outer part of the inner periphery portion of the axle side engaging piece 7 that improves solar term valve shaft 4 and metal shaft 32, and prevent axial relative movement between axle side engaging piece 7 and metal shaft 32, just, prevent that a side engaging piece 7 breaks away from from metal shaft 32, on the part of the peripheral surface of metal shaft 32 or gamut, be formed with recess or groove and bump.Alternatively, the cross section of metal shaft 32 can be to have two radially non-circular shape of opposite planar portion, and the cross section of axle side engaging piece 7 can be to have two radially non-circular shape of opposite planar portion.Like this, can prevent relative rotation between a side engaging piece 7 and the metal shaft 32.
In the above-described embodiments, the valve side engaging piece 8 of butterfly valve 6 is thermally welded to the peripheral part of the axle side engaging piece 7 of solar term valve shaft 4 such as laser beam welding etc.Alternatively, the valve side engaging piece 8 of butterfly valve 6 can be by such as bolt or the screw peripheral part to the axle side engaging piece 7 of solar term valve shaft 4.In addition, the round plate 47 of butterfly valve 6 can be integrally molded with the peripheral part of the axle side engaging piece 7 of solar term valve shaft 4.
The resin material that is used for Unitarily molded throttle-valve body 1, solar term valve shaft 4, accelerator lever 5 and butterfly valve 6 can be the synthetic resin material.The synthetic resin material can be made to thermoplastic resin material (for example melting resin of being made by thermoplastic resin) by adding filler (for example glass fibre, carbon fiber, aramid fibre, boron fiber) cheaply or filler.The synthetic resin material comprises the polybutylene-terephthalate (PBTG30) that contains 30% glass fibre, contains the polybutylene-terephthalate (PBTG40) of 40% glass fibre.Resin throttle-valve body or resin air throttle or resin accelerator lever or resin solar term valve shaft can be made by the injection moulding of synthetic resin material, and this is by carrying out to the die cavity of mould from cast gate injection synthetic resin material.Can low-costly make by the moulded resin products that the injection moulding of synthetic resin material is molded integratedly, and have improved mechanical property, intensity, rigidity and heat resistance.
In the above-described embodiments, resin material (for example melting resin of being made by thermoplastic resin) is used as the melted material that is heated to melted state.Yet alternatively, the melted material that is heated to melted state can be the molten metal material semi-molten alloy of aluminum alloy or magnesium alloy (for example, such as).That is, at least one can be made by metallic material fully in throttle-valve body 1, solar term valve shaft 4, accelerator lever 5 and the butterfly valve 6.
To those skilled in the art, other advantage and change are clearly.On broad scope, shown in the present invention is not limited to and described detail, typical equipments and illustrative example.
Claims (10)
1. throttle system of IC engine comprises:
Form the cylinder blanket of gas-entered passageway, it is along the direction guiding air inlet of gas-entered passageway central axis;
Axle with rotating center axis, it is basically perpendicular to the central axis of the air inlet passage of shell; With
Integrally be installed to the air throttle on the described axle, described air throttle by be used for making the minimized complete closed position of flow of air inlet with the maximized fully open position of flow that is used to make air inlet between change air throttle angle of swing regulate the charge flow rate of suction cylinder of internal-combustion engine; Wherein:
Air throttle comprises and the corresponding round plate of cross-sectional outer shape;
The rotating center axis skew of round plate along the central axial direction of air inlet passage from axle;
When the peripheral part of round plate directly contacted the inner peripheral surface of shell, round plate tilted perpendicular to the vertical line of air inlet channel center axis relatively; And
Round plate comprises:
The first semi-disc part, when round plate along opening direction fully when complete closed position is rotated predetermined air throttle aperture, first semi-disc part is positioned at the round plate upstream side along airintake direction; With
The second semi-disc part, its surface area be less than the surface area of first semi-disc part, and when round plate along opening direction fully when complete closed position is rotated predetermined air throttle aperture, second semi-disc partly is positioned at the round plate downstream side along airintake direction.
2. throttle system of IC engine as claimed in claim 1 is characterized in that:
When air throttle be fully closed, and thereby when stoping corresponding to the predetermined angle of the complete closed position of air throttle along the rotatablely moving of the complete closing direction of air throttle, round plate tilts perpendicular to the vertical line of air inlet channel center axis relatively; And
Closed position is opened direction fully along air throttle and is moved predetermined angle of swing from the valve mounting point fully, and wherein, in the valve mounting point, the peripheral part of round plate directly contacts the inner peripheral surface of shell.
3. throttle system of IC engine as claimed in claim 1 is characterized in that, spring is installed between shell and the axle, and promotes air throttle along the direction that makes air throttle return complete closed position.
4. throttle system of IC engine as claimed in claim 1 is characterized in that:
The rotating center axis of axle is arranged on eccentric position, described eccentric position along the air inlet passage radially from the skew of the central axis of air inlet passage; And
Axle side engaging piece is arranged on the axle integratedly, so that keep air throttle reliably.
5. throttle system of IC engine as claimed in claim 4 is characterized in that:
Shell is a throttle-valve body, and it rotatably holds air throttle in the mode that can open and close air throttle;
Throttle-valve body comprises a support, and the axle support is an axial end portion of back shaft rotatably; With
The batter that is coupling is formed on the support, is used for receiving axes side engaging piece and enters the air inlet passage.
6. throttle system of IC engine as claimed in claim 4 is characterized in that, air throttle comprises tubular valve side engaging piece integratedly, and it is mounted to a peripheral part of side engaging piece.
7. throttle system of IC engine as claimed in claim 6 is characterized in that, axle side engaging piece and valve side engaging piece are made by resin material, and interfix by thermal weld.
8. throttle system of IC engine as claimed in claim 1 is characterized in that the inner peripheral surface of shell comprises the valve engaging piece, when the peripheral part of round plate directly contacts the valve engaging piece, and valve engaging piece restriction air throttle being further rotated along complete closing direction.
9. throttle system of IC engine as claimed in claim 1 is characterized in that the inner peripheral surface of shell comprises conical surface integratedly, conical surface have along the central axial direction of air inlet passage towards downstream side reduce gradually reduce diameter.
10. throttle system of IC engine as claimed in claim 9 is characterized in that:
Second semi-disc part with respect to first semi-disc part at the rotating center axis place of axle lopsidedness predetermined angle.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004114634 | 2004-04-08 | ||
| JP114634/2004 | 2004-04-08 | ||
| JP2004336093A JP2005320957A (en) | 2004-04-08 | 2004-11-19 | Intake air throttling device for internal combustion engine |
| JP336093/2004 | 2004-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680703A CN1680703A (en) | 2005-10-12 |
| CN100400829C true CN100400829C (en) | 2008-07-09 |
Family
ID=35067405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100651183A Expired - Fee Related CN100400829C (en) | 2004-04-08 | 2005-04-08 | Throttle system of IC engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005320957A (en) |
| CN (1) | CN100400829C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007135840A1 (en) * | 2006-05-24 | 2007-11-29 | Toyota Jidosha Kabushiki Kaisha | Air intake device for internal combustion engine |
| FR2962184B1 (en) * | 2010-06-30 | 2013-12-27 | Valeo Systemes De Controle Moteur | FLUID CIRCULATION VALVE |
| CN104747748A (en) * | 2015-03-19 | 2015-07-01 | 辽宁鑫源重工有限公司 | Carbon fiber reinforced plastic ball valve |
| CN106194444B (en) * | 2016-08-26 | 2023-05-16 | 重庆隆鑫机车有限公司 | Engine throttle valve body, throttle valve and engine |
| KR102092773B1 (en) * | 2018-09-06 | 2020-03-24 | 캄텍주식회사 | A valve of a vechicle |
| JP7065000B2 (en) * | 2018-09-18 | 2022-05-11 | 日立Astemo株式会社 | Intake device |
| CN113202635A (en) * | 2021-05-20 | 2021-08-03 | 重庆隆鑫机车有限公司 | Throttle valve body and engine |
| FR3133656A1 (en) | 2022-03-18 | 2023-09-22 | Psa Automobiles Sa | MOTORIZED VALVE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311135A (en) * | 1989-06-08 | 1991-01-18 | Nippon Carbureter Co Ltd | Intake quantity controller for engine |
| JP2000087765A (en) * | 1998-09-09 | 2000-03-28 | Robert Bosch Gmbh | Throttle valve pipe piece for controlling engine output and method for adjusting air leakage from the same |
-
2004
- 2004-11-19 JP JP2004336093A patent/JP2005320957A/en active Pending
-
2005
- 2005-04-08 CN CNB2005100651183A patent/CN100400829C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311135A (en) * | 1989-06-08 | 1991-01-18 | Nippon Carbureter Co Ltd | Intake quantity controller for engine |
| JP2000087765A (en) * | 1998-09-09 | 2000-03-28 | Robert Bosch Gmbh | Throttle valve pipe piece for controlling engine output and method for adjusting air leakage from the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005320957A (en) | 2005-11-17 |
| CN1680703A (en) | 2005-10-12 |
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Granted publication date: 20080709 Termination date: 20100408 |