CN1938503A - Idle air control device of fuel injection device - Google Patents
Idle air control device of fuel injection device Download PDFInfo
- Publication number
- CN1938503A CN1938503A CNA2005800100808A CN200580010080A CN1938503A CN 1938503 A CN1938503 A CN 1938503A CN A2005800100808 A CNA2005800100808 A CN A2005800100808A CN 200580010080 A CN200580010080 A CN 200580010080A CN 1938503 A CN1938503 A CN 1938503A
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- China
- Prior art keywords
- air valve
- slider
- motor
- collar
- output shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/1055—Details of the valve housing having a fluid by-pass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/12—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit
- F02D9/14—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit the members being slidable transversely of conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0252—Opening a special valve-controlled intake passage (by-pass) during starting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
- F02M69/32—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines with an air by-pass around the air throttle valve or with an auxiliary air passage, e.g. with a variably controlled valve therein
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
An idle air control device of a fuel injection device, wherein an air valve is driven by a motor. The air valve is accurately disposed concentrically with an air valve guide hole bored in a throttle body to improve the dynamic characteristics of the air valve. The motor (M) is disposed in a motor case (1a), a cylindrical collar (2) is fixedly disposed in an insert tube part (1b) formed integrally with the motor case (1a), and a motor output shaft (Ma) is projectedly disposed in the collar (2). A slider (3) is threaded to the outer periphery of the motor output shaft (Ma), and the air valve (4) is disposed between the outer peripheral part (3f) of the slider (3) and the inner peripheral part (2b) of the collar (2). The slider is formed such that its rotation is suppressed by the collar (2) and its axial movement only is allowed. The air valve (4) is disposed so as to be elastically pressed toward the locking stage part (3g) of the slider (3) by an air valve spring (5). The slider (3) is axially moved according to the rotation of the motor (M), and the air valve (4) is also axially moved in synchronism with the movement of the slider (3) to control the opening of a bypass air passage (54) opening in the air valve guide hole (55).
Description
Technical field
The present invention relates to a kind of fuel in the fuel pot be boosted by petrolift, fuel after this is boosted supplies to in-engine fuel injection system by fuel injection valves inject, relate in particular to a kind ofly when the race of engine turns round or non-idling when running, control is fed into the idle running pneumatic control device of in-engine idle running air quantity.
Background technique
Fig. 4 has shown the idle running pneumatic control device in the existing fuel injection system.
Describe with reference to Fig. 4,50 expression air suction ways 51 connect the throttle body that its inside wears, and are rotated by the butterfly type throttle valve 53 that is installed on the throttle spindle 52, and air suction way 51 is carried out open and close controlling.
In addition, air suction way 51 is divided into the air-breathing road 51a of throttle valve 53 upstream sides and the air-breathing road 51b in throttle valve 53 downstream sides by throttle valve 53, the air-breathing road 51a of upstream side links to each other with air-strainer not shown in the figures, and the air-breathing road 51b in downstream side links to each other with motor by sucking pipe.
The 54th, bypass gas path, the one end is at the air-breathing road of upstream side 51a opening, and the other end is at the air-breathing road in downstream side 51b opening, and upstream side and downstream side that this bypass gas path 54 is walked around 53 pairs of air suction ways 51 of throttle valve are communicated with.
The 55th, the air valve guide hole that links to each other with bypass 54, one end pass through patchhole 56 at throttle body 50 1 end 50A openings.
And idle running pneumatic control device 60 is made of following element.Wax shell 61 portion within it comprises ptc heater 62 and the swollen compression material of heat is sealing into inner wax element 63.The electrode of ptc heater 62 with link to each other with terminal 64a, 64b in the guidance connector 61a that wax shell 61 forms as one.Lead L1, L2 link to each other with terminal 64a, 64b.
And, be external screw thread that forms on the periphery of the 61b of tube portion that extend these wax shell 61 belows and the female thread engagement of going up formation interior week that is formed on the last square tube 65a of portion that is formed tubular insertion tube portion 65, thus, inserting tube portion 65 is installed on the below of wax shell 61 integratedly.The 66th, be arranged on wax shell 61 with can move freely, insert the cup-shaped working body of tube portion 65 inside.The inner bottom part of this working body 66 is paid gesture by the elastic force of spring 67, thus with the preceding end in contact of the output shaft 63a of wax element 63.
That is to say that the card that an end card of spring 67 ends in being formed on insertion tube portion 65 ends on the stepped part 65b, the other end card ends on the 66a of upper flange portion of working body 66.
So block only on the front end of the axial region 66b that the inner bottom part from working body 66 extends downwards by spring 69 upper end of air valve 68.
As mentioned above, install integratedly wax shell 61 and insertion end 65, portion within it, as shown in Figure 4, be provided with ptc heater 62, wax element 63, working body 66, air valve 68 towards the below from the top, working body 66 after ending with air valve 68 card by the elastic force of spring 67 with the take-off lever Elastic Contact of wax element 63, thereby form idle running pneumatic control device 60.
And the following square tube 65c of portion of the insertion tube portion 65 of above-mentioned idle running pneumatic control device is inserted in the patchhole 56 of an end 50a opening of throttle body 50, and then air valve 68 insertions simultaneously are arranged in the air valve pilot hole 55.So under this state, be threaded on the throttle body 50 by will be inserted tube portion 65 by fixed component not shown in the figures, idle running pneumatic control device 60 is fixedly installed on the throttle body 50.
If adopt this existing idle running pneumatic control device, when engine running, because the hot Peng's compression material in the wax element 63 shrinks, the overhang of output shaft 63a is little, then air valve 68 is in the top position, bypass path 54 is opening greatly, will supply in the motor corresponding to the air of bypass path 54 openings, carries out the startup of motor.
On the other hand, because synchronous with the startup of motor, ptc heater 62 is by ECU not shown in the figures or storage battery supplying electric current, and ptc heater 62 heatings are thus heated wax shell 63.
Summary of the invention
Adopt existing idle running pneumatic control device, wax element 63 not only receives the heat of ptc heater 62, also is subjected to environmental gas temperature effect.At this moment, the outstanding characteristic of the output shaft 63a of wax element 63 and the state of temperature of motor adapt to, and produce deviation between the outstanding characteristic of output shaft 63a with respect to the environmental gas temperature.
For example when the environmental gas temperature was high, the outstanding quantitative change of output shaft 63a was big, existed air valve 68 to stop up the tendency of the opening of bypass paths 54, when engine start, and abundant air supply.
And, the overhang of output shaft 63a is along with heating, the wax element 63 of ptc heater 62 are changed by the Volume Changes of ptc heater 62 heating, wax element 63 Nei Repeng compression materials, the speed of response of output shaft 63a is slow, and is difficult to carry out small air quantity control.
In view of the above problems, the purpose of this invention is to provide the idle running pneumatic control device in a kind of fuel injection system, idle running pneumatic control device involved in the present invention, at the driving body that will drive air valve when the wax element changes to motor, can absorb the offset of motor output shaft and air valve reliably, can air valve be set with respect to the correctly coaxial heart of air valve pilot hole.
Can use to be arranged on existing cross section and to be the columnar air valve in the air valve pilot hole of circle, have the interchangeability that to exchange with existing idle running pneumatic control device.
To achieve these goals, the idle running pneumatic control device in the fuel injection system according to the invention is a kind of throttle valve being arranged in the air suction way that is located in the throttle body,
The air suction way in the air suction way of throttle valve upstream side and throttle valve downstream side is communicated with by bypass path by walking around this throttle valve, by the air valve that can be arranged in the air valve pilot hole that is connected with above-mentioned bypass path with being free to slide, idle running pneumatic control device in the fuel injection system that the bypass air amount of this bypass path of flowing through is controlled, it is characterized in that: above-mentioned idle running pneumatic control device comprises:
With the insertion tube 1b of portion that forms towards lower opening ground around the motor case of motor, from motor case as external mold and by integrally formed shell main body 1;
Be fixedly installed on the tubular collar in the insertion tube portion of shell main body;
Be threadably engaged in from the slider of motor on the periphery of the outstanding motor output shaft of the interior side of the collar;
Between the periphery of interior week of the collar and slider, blocked in the axial direction and only be provided with simultaneously in the air valve pilot hole by the air valve of slide-and-guide;
The rotation that is engaged on the slider on the above-mentioned motor output shaft by collar double thread is contained, allows slider to move vertically simultaneously,
Above-mentioned air valve and slider are synchronously moved vertically, the opening at the bypass path of air valve pilot hole inner opening is controlled by air valve.
In addition, the present invention is except above-mentioned the 1st feature, the 2nd feature is: above-mentioned air valve is configured in that the card that is arranged on the periphery of slider lower end ends stepped part and the card that is arranged on the slider upper end ends between the flange part, the air valve spring that is located on the slider periphery that contracts simultaneously is arranged on card only on the stepped part with the pushing of above-mentioned air valve, and, forming than the output shaft length direction axle center line of motor and the big gap of offset between the line of air valve pilot hole length direction axle center between the peripheral part of the interior perimembranous of air valve and slider and between the interior perimembranous of the peripheral part of air valve and the collar.
And, the present invention is except above-mentioned the 1st feature, the 3rd feature is: on the bottom of the female threaded hole that is threadably engaged in the slider on the above-mentioned motor output shaft, be provided with the input side limitation part that the lower end card with motor output shaft ends, simultaneously on the inner bottom part of the collar, the card that is provided with the slider top ends the extension side limitation part that the stepped part card ends.
And the present invention is except above-mentioned the 1st feature, and the 4th feature is: be provided with Sealing between the upper end of the inner bottom part of the insertion tube portion of above-mentioned shell main body and the collar, be formed on the lip shape portion of Sealing inside and the periphery sliding contact of motor output shaft.
According to the 1st feature of the present invention, in case motor is driven, motor output shaft rotates along a direction, then because slider is contained its rotation by the collar and be held that thereby move, air valve also moves down synchronously with slider downwards.This moment since air valve by air valve pilot hole guiding and move downwards, stop up by air valve corresponding to the rotating speed of motor one direction at the bypass path of air valve pilot hole inner opening.
In case and motor output shaft moves to greatest extent to a direction, then slider moves to below, and air valve will stop up fully at the bypass path of air valve pilot hole inner opening.
On the other hand, in case motor output shaft rotate to other direction, then because slider is contained its rotation by the collar and is held that thereby be moved upward, air valve also moves up synchronously with slider.In case air valve moves up, then the bypass path at air valve pilot hole inner opening is opened wide by air valve corresponding to the rotation quantity of motor other direction, in case motor output shaft moves to greatest extent to other direction, then slider moves to the top, and air valve makes at the bypass path of air valve pilot hole inner opening unlimited fully.
According to the 1st feature, the slider that is threadably engaged on the motor output shaft is contained its rotation by the collar, but allows it to move vertically simultaneously, and air valve ends with the slider card in the axial direction.
Thereby air valve can synchronously move in the air valve pilot hole with slider, and the opening at the bypass path of air valve pilot hole inner opening is controlled.
Contain that by rotation between the slider and the collar need not to be provided with and rotate the containment means, the cross section of air valve can be circle on air valve to slider.In case so, employed cross section is the air valve pilot hole of circle in the idle running control gear of the wax element that uses prior art owing to using, idle running control gear involved in the present invention can be installed on the existing throttle body easily, can exchange.
And, in case will around the motor case of motor periphery and below the insertion tube portion of extending on single shell main body, form, when the outer moulding of shell main body is shaped, owing to can be that tube portion is inserted in the benchmark shaping, therefore can improve motor output shaft length direction axle center line and insert a concentric precision of minister's degree direction shaft axis with the motor output shaft.Preferably, the air valve concentric is arranged on the air valve pilot hole.
In addition, with motor case with insert tube portion and on single shell main body, form and reduced number of components effectively.
The card that the card that the 2nd feature according to the present invention, air valve are set at the slider lower end ends stepped part and slider upper end ends between the flange part, and the card that is flexibly pressed against the lower end by air valve spring ends on the stepped part simultaneously.
In addition, between the peripheral part of the interior perimembranous of air valve and slider and between the interior perimembranous of the peripheral part of air valve and the collar, formed than the output shaft length direction axle center line of motor and the big gap of offset between the air valve guiding cell size axis of orientation heart line.
In case so, when the patchhole internal fixation that is inserted into throttle body in the insertion tube portion with the shell main body is provided with, can with the air valve coaxial core be arranged in the air valve pilot hole, can obtain the kinetic characteristic of the slyness of air valve.
Just air valve is mechanically unfixing with respect to slider, in case by the pushing of air valve spring elasticity, owing to formed above-mentioned gap, air valve can move to the side along the air valve pilot hole, keeps good concentric state simultaneously.
In addition, the 3rd feature according to the present invention, air valve is by at its input side, the lower end of motor output shaft contacts with input side limitation part on being arranged on slider female threaded hole bottom and is fixed, extend side at it on the other hand, the upper flange portion of slider contacts with limitation part on being arranged on collar inside diameter and is fixed.
Thereby, air valve can be recovered from any contact fixed position.
In addition, the 4th feature according to the present invention, when carbon that motor produced etc. is in bypass path enters the collar, because the lip shape portion of Sealing is configured in the periphery of motor output shaft, thereby carbon etc. do not enter in the motor, can steady in a long-termly use motor.
In addition, the sealing part is an annular, is fixedly installed between the upper end of the inner bottom part that inserts tube portion and the collar, thereby need not to be provided for the special-purpose member of fixing seals.
Description of drawings
Fig. 1 is the longitudinal section that shows idle running pneumatic control device one embodiment in the fuel injection system of the present invention.
Fig. 2 is half longitudinal section of the amplification of slider, air valve portion key position among Fig. 1.
Fig. 3 is the amplification half sectional view of key position in the A-A line among Fig. 1.
Fig. 4 is an idle running pneumatic control device longitudinal section in the existing fuel injection system.
Embodiment
Hereinafter will idle running pneumatic control device one embodiment in the fuel injection system of the present invention be introduced.
Fig. 1 is the longitudinal section that shows the idle running pneumatic control device key position that comprises throttle body.
Fig. 2 is the longitudinal section of the amplification key position of air valve part among Fig. 1.
Fig. 3 is the amplification half sectional view of key position in the A-A line among Fig. 1.
In addition with Fig. 4 in identical structure division adopt identical reference character.
M is stepping motor (hereinafter referred is a motor), the motor case 1a that is made by the synthetic resin material around it centers on, formed the insertion tube 1b of portion cylindraceous towards the below from motor case 1a lower end, this motor case 1a and the insertion tube 1b of portion form as one and constitute shell main body 1.
Shell main body 1 is when the synthetic resin material is carried out injection molding, is the product that external mold forms with motor M, and the output shaft Ma of motor M gives prominence to setting in inserting the tube 1b of portion, is provided with coaxially with the insertion tube 1b of portion simultaneously.And, on the periphery of motor output shaft Ma, formed external screw thread.
The 2nd, be fixedly installed on the ring-type collar that inserts in the tube 1b of portion, the collar 2 is pressed into from the lower ending opening that inserts the tube 1b of portion and inserts in the tube 1b of portion.At this moment, the upper end 2a of the collar 2 contacts towards the inner bottom part 1c that inserts the tube 1b of portion and with this inner bottom part 1c, be arranged on the upper end 2a of the collar 2 annular seal R towards motor M side the supporting that is fixed, the lip Ra that is formed on side in the sealing part R be provided with the periphery sliding contact of the output shaft Ma of motor M.
And the control teat 2c of the upper end 2a of the collar 2 towards the below saliently is formed on towards interior side on the interior perimembranous 2b of the collar 2 from Fig. 1, and this control teat 2c shows by Fig. 3 is detailed.
Formed near the lower end of the interior perimembranous 2b of this external collar 2 than the more inside side of interior perimembranous 2b towards the extension side limitation part 2d of flat condition.
The 3rd, be threadably engaged in the slider on the external screw thread of output shaft Ma of motor M.Wear female threaded hole 3b towards the below from upper end 3a, formed the limitation part 3c of input side in the lower end of female threaded hole 3b.
And formed the card that extends to the side in the upper end of slider 3 and end flange part 3d, ending on the flange part 3d having worn groove 3c at this card, the control teat 2c of the insertion collar 2 can pass through this groove 3c at above-below direction.
And though the external screw thread of the output shaft Ma of the female threaded hole 3b of slider 3 and motor M engagement, it is arranged in the collar 2 side in the perimembranous 2b simultaneously, and the interior perimembranous 2b of the collar 2 does not control moving of spinning up and down slider 3.
4 are arranged on the cylindric air valve between the interior perimembranous 2b of the slider 3 peripheral part 3f and the collar 2.
The lower end of air valve 4 is arranged on the card that is configured on the slider 3 lower end peripheries ends on the stepped part 3g, simultaneously, the upper end of air valve 4 be provided with face card end flange part 3d below.
The 5th, contracting is located at air valve spring on the slider 3 peripheral part 3f, and the inner bottom part card of its lower end and air valve 4 ends, and the card of its upper end and slider 3 ends flange part 3d card and ends.
If the employing said structure then by the elastic force of air valve spring 5, remains on card with air valve 4 pushings and ends on the stepped part 3g, air valve 4 synchronously moves along the vertical direction with slider 3.
So the insertion tube 1b of portion that is provided with the shell main body 1 of said structure is inserted in the patchhole 56 of throttle body 50 1 end 50a upper sheds, the fixed component 6 by being entrenched on the circumferential groove 1f that inserts the tube 1b of portion is fixed on shell main body 1 on the throttle body 50.
In case so, then air valve 4 is arranged in the air valve pilot hole 55 with can move freely, this state as shown in Figure 1.
Hereinafter the effect to idle running pneumatic control device of the present invention is introduced.
Describe when under the low state of motor or environmental gas temperature, starting.
In case motor carries out start-up operation, then synchronous with it, to the motor M output electrical signal corresponding with low-temperature condition, motor M rotates to a direction within the specific limits according to above-mentioned signal from ECU.
In case the output shaft Ma of motor M rotates to a direction, then to being promoted significantly, air valve 4 and slider 3 synchronously upwards promote through in the air valve pilot hole 55 slider 3 significantly upward, and bypass path 54 is opened wide greatly.
In case so, then can a large amount of startups be supplied with towards motor with air, under this low-temperature condition, can carry out the startup of motor well from bypass path 54.
In this external foregoing, rotated to a direction by the output shaft Ma of motor M, can upwards promote slider 3, the control teat 2c that is fixed on the collar 2 on the shell main body 1 inserts in the groove 3e of slider 3, the rotation of containment slider 3.
When above-mentioned startup success, if carry out the warming up of motor, then the temperature of motor slowly raises then, the electrical signal that ECU rises corresponding to temperature to motor M output.
According to above-said current signal, the output shaft Ma of motor is along rotating in the opposite direction with above-mentioned side, in case so, then slider 3 is in the drawings to moving down, air valve 4 and slider 3 synchronously move downward through in the air valve pilot hole 55 simultaneously, raise corresponding to temperature, the opening of bypass path 54 is gently reduced.
Thereby, the air quantity of supplying with to motor is slowly reduced, invalid engine rotation does not increase, and can carry out the warming up of motor well.
And, under the complete done state of the warming up of motor, slider 3 is configured on the lower position of the collar 2, synchronous therewith, air valve 4 also is configured on the lower position of air valve pilot hole 55, and then the opening of bypass path 54 carried out obturation, can finish the startup and the warming up of motor.
Above under the low state of environmental gas temperature and engine temperature, finishing to be illustrated from starting to warming up, but will be input to the motor M corresponding to the electrical signal of state of temperature from ECU, motor M can set the aperture corresponding to the optimum air valve 4 of state of temperature corresponding to this electrical signal operation.
Adopt idle running pneumatic control device of the present invention, owing between the slider 3 and the collar 2, be provided with groove 3e and control projection 2c, when the rotation of slider 3 is contained, slider 3 can move vertically, therefore, air valve 4 can use the air valve of transverse section circle same as the prior art.Thereby idle running pneumatic control device of the present invention intactly can be applied in the idle running pneumatic control device that has used existing wax element.
Owing to making the insertion tube 1b of portion around the motor case 1a of motor M periphery and insertion in the patchhole 56 of throttle body 50 is that one has formed shell main body 1, can realize that number of components reduces and miniaturization, can make the lift-launch raising on the limited vehicle of the such containing space of two-wheel vehicle especially.
The gap S2 that forms between the peripheral part 4b by formed gap S1 and air valve 4 between the interior perimembranous 4a of the peripheral part 3f that makes at slider 3 and air valve 4 and the interior perimembranous 2b of the collar 2 is bigger than the output shaft Ma length direction axle center line X-X and the offset Z between the air valve pilot hole 55 length direction axle center line Y-Y of motor, when the pneumatic control device that will dally is assembled on the throttle body 50, the coaxial reliably heart of air valve 4 can be installed in the air valve pilot hole 55, can keep the good kinetic characteristic of air valve 4.
And, air valve 4 can coaxial heart be installed in the air valve pilot hole 55, comprises gap S1, S2 with respect to above-mentioned offset Z, not with air valve 4 with respect to slider 3 mechanical fixation, air valve 4 is flexibly pressed against by air valve spring 5, allows it radially to move.
And, contacting with the lower end Mb of motor output shaft Ma by the input side limitation part 3c that is arranged on the female threaded hole 3b bottom, slider 3 is along mobile being fixed of input side (moving up among the figure).This state is shown by Fig. 1 center line right side part.
On the other hand, the extension side limitation part 2d on being ended the following of flange part 3d and be arranged on the collar 2 inner bottom parts by the card that is arranged on slider 3 tops contacts, and slider 3 is along mobile being fixed of extending sides (downward direction moves among the figure).This state is shown by Fig. 1 center line right side part.
In case so, then can recover from any fixed position.
If with the lip Ra sliding contact of Sealing R be arranged on the upper portion periphery of motor output shaft Ma, the carbon etc. that enters the collar 2 inside from bypass path 54 does not enter in the motor M from the periphery of motor output shaft Ma, can use motor M steadily in the long term.
In addition, center on and above-mentioned characteristics combination by motor case 1a around the motor M, can give stability.
Because Sealing R by the upper end 2a clamping of the stepped part in the motor case 1a and the collar 2, then need not to be used for particular component that Sealing R is fixed.
Claims (4)
1. the idle running pneumatic control device in the fuel injection system, throttle valve is being arranged in the air suction way that is located in the throttle body, the air suction way in the air suction way of throttle valve upstream side and throttle valve downstream side is communicated with bypass path by walking around this throttle valve, by the air valve that can be arranged in the air valve pilot hole that is connected with above-mentioned bypass path with being free to slide, in the idle running pneumatic control device in the fuel injection system that the bypass air amount of this bypass path of flowing through is controlled, it is characterized in that: above-mentioned idle running pneumatic control device comprises:
With the insertion tube 1b of portion that forms towards lower opening ground around the motor case 1a of motor M, from motor case 1a as external mold and by integrally formed shell main body 1;
Be fixedly installed on the interior tubular collar 2 of the insertion tube 1b of portion of shell main body 1;
Be threadably engaged in the slider 3 on the periphery of the outstanding motor output shaft Ma of the interior side of the collar 2 from motor M;
Between the periphery of interior week of the collar 2 and slider 3, blocked in the axial direction and only be provided with simultaneously in air valve pilot hole 55 by the air valve 4 of slide-and-guide;
The rotation that is engaged on the slider 3 on the above-mentioned motor output shaft by the collar 2 double threads is contained, allows slider 3 to move vertically simultaneously,
Above-mentioned air valve 4 and slider 3 are synchronously moved vertically, control by 4 pairs of openings of air valve at the bypass path 54 of air valve pilot hole 55 inner openings.
2. the idle running pneumatic control device in the fuel injection system, it is characterized in that: above-mentioned air valve is configured in that the card that is set on the slider 3 lower end peripheries ends stepped part 3g and the card that is set on slider 3 upper ends ends between the flange part 3d, the air valve spring 5 that is located on slider 3 peripheries that contracts simultaneously is arranged on card only on the stepped part 3g with the pushing of above-mentioned air valve, and, formed than the output shaft Ma length direction axle center line X-X of motor and the big gap S1 of offset Z between the air valve pilot hole 55 length direction axle center line Y-Y between the peripheral part 3f of the interior perimembranous 4a of air valve 4 and slider 3 and between the interior perimembranous 2b of the peripheral part 4b of air valve 4 and the collar 2, S2.
3. the idle running pneumatic control device in the fuel injection system according to claim 1, it is characterized in that: on the bottom of the female threaded hole 3b that is threadably engaged in the slider 3 on the above-mentioned motor output shaft, be provided with the input side limitation part 3c that the lower end Mb card with motor output shaft Ma ends, simultaneously on the inner bottom part of the collar 2, the card that is provided with slider 3 tops ends the extension side limitation part 2d that stepped part 3d card ends.
4. the idle running pneumatic control device in the fuel injection system according to claim 1, it is characterized in that: between the upper end 2a of the inner bottom part of the insertion tube 1b of portion of above-mentioned shell main body and the collar 2, be provided with Sealing R, be formed on the lip shape Ra of portion of Sealing R inside and the periphery sliding contact of motor output shaft Ma.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP103995/2004 | 2004-03-31 | ||
| JP2004103995 | 2004-03-31 | ||
| PCT/JP2005/006560 WO2005095774A1 (en) | 2004-03-31 | 2005-03-29 | Idle air control device of fuel injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1938503A true CN1938503A (en) | 2007-03-28 |
| CN1938503B CN1938503B (en) | 2012-01-18 |
Family
ID=35063838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800100808A Active CN1938503B (en) | 2004-03-31 | 2005-03-29 | Idle air control device of fuel injection device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1734236B1 (en) |
| JP (1) | JP4555822B2 (en) |
| CN (1) | CN1938503B (en) |
| DE (1) | DE602005016907D1 (en) |
| TW (1) | TWI277691B (en) |
| WO (1) | WO2005095774A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4459154B2 (en) * | 2005-11-09 | 2010-04-28 | 株式会社ケーヒン | Air bypass device for multiple throttle bodies |
| JP4690949B2 (en) * | 2006-06-13 | 2011-06-01 | 株式会社ケーヒン | Engine intake system |
| JP2007332904A (en) * | 2006-06-16 | 2007-12-27 | Mikuni Corp | Valve device and idle air quantity control device |
| JP4690990B2 (en) * | 2006-10-04 | 2011-06-01 | 株式会社ケーヒン | Air bypass device in fuel injection device |
| US8616522B2 (en) | 2007-07-10 | 2013-12-31 | Continental Tire Canada, Inc. | Idle air control valve |
| JP6108303B2 (en) * | 2013-02-14 | 2017-04-05 | 株式会社ケーヒン | Flow control device |
| JP6193788B2 (en) * | 2014-03-14 | 2017-09-06 | 株式会社ケーヒン | Bypass valve device |
| JP6453692B2 (en) * | 2015-03-30 | 2019-01-16 | 株式会社ケーヒン | Manufacturing apparatus and manufacturing method of flow control device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61146667U (en) * | 1985-03-04 | 1986-09-10 | ||
| JPH0781545B2 (en) * | 1988-08-06 | 1995-08-30 | 三菱電機株式会社 | Idling speed control valve for internal combustion engine |
| FR2718490B1 (en) * | 1994-04-06 | 1996-07-05 | Solex | Two-stage valve for supplying air to internal combustion engine injectors. |
| JP3887309B2 (en) * | 2000-06-19 | 2007-02-28 | 株式会社ケーヒン | Bypass intake air amount control device |
| EP1384874B1 (en) * | 2001-04-27 | 2010-12-08 | Keihin Corporation | Intake system for engine |
| JP3954819B2 (en) * | 2001-08-31 | 2007-08-08 | 株式会社ケーヒン | Seal structure in bypass intake air amount control device |
| JP3978395B2 (en) * | 2002-01-23 | 2007-09-19 | 愛三工業株式会社 | Flow control valve |
| JP3971619B2 (en) * | 2002-02-13 | 2007-09-05 | 株式会社ケーヒン | Engine intake system |
| JP2003262283A (en) * | 2002-03-08 | 2003-09-19 | Denso Corp | Air control valve |
| JP7081545B2 (en) * | 2019-03-26 | 2022-06-07 | トヨタ自動車株式会社 | Power converter |
-
2005
- 2005-03-29 WO PCT/JP2005/006560 patent/WO2005095774A1/en active Application Filing
- 2005-03-29 CN CN2005800100808A patent/CN1938503B/en active Active
- 2005-03-29 JP JP2006511857A patent/JP4555822B2/en active Active
- 2005-03-29 EP EP05721700A patent/EP1734236B1/en active Active
- 2005-03-29 TW TW094109739A patent/TWI277691B/en active
- 2005-03-29 DE DE602005016907T patent/DE602005016907D1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE602005016907D1 (en) | 2009-11-12 |
| WO2005095774A1 (en) | 2005-10-13 |
| TWI277691B (en) | 2007-04-01 |
| TW200537017A (en) | 2005-11-16 |
| JPWO2005095774A1 (en) | 2007-08-16 |
| CN1938503B (en) | 2012-01-18 |
| EP1734236B1 (en) | 2009-09-30 |
| EP1734236A4 (en) | 2008-05-28 |
| JP4555822B2 (en) | 2010-10-06 |
| EP1734236A1 (en) | 2006-12-20 |
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Effective date of registration: 20211221 Address after: Ibaraki Patentee after: Hitachi astemo Co.,Ltd. Address before: Tokyo, Japan Patentee before: KEIHIN Corp. |