CN201053348Y - Engine air intake device - Google Patents
Engine air intake device Download PDFInfo
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- CN201053348Y CN201053348Y CNU2007200012521U CN200720001252U CN201053348Y CN 201053348 Y CN201053348 Y CN 201053348Y CN U2007200012521 U CNU2007200012521 U CN U2007200012521U CN 200720001252 U CN200720001252 U CN 200720001252U CN 201053348 Y CN201053348 Y CN 201053348Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The utility model provides an air intake system for an engine, which can improve the detection performance of a pressure sensor to the intake pressure. The utility model comprises an air throttle mechanism (2) and the pressure sensor (41), wherein, an air throttle (14) for switching an air inlet channel (7) of the engine is arranged on a mechanism body (5) forming a part of the air inlet channel (7) of the air throttle mechanism (2); the pressure sensor (41) tests the intake pressure which is led in through a pressure leading-in channel (49) from the inside of the air inlet channel (7) of the mechanism body (5). The pressure leading-in channel (49) is provided with a pressure leading-in opening (28) on the channel wall (8) of the air inlet channel (7) of the mechanism body (5); the pressure leading-in opening (28) is arranged on a position which is prevented from being affected by vortex flow of suction current caused by the air throttle (14).
Description
Technical field
The utility model relates to a kind of motor air inlet system of (also claiming " internal-combustion engine ").
Background technique
In the past, the real air inlet system of driving the motor of flat 2-91931 communique record of Japan was for example arranged.The following describes the air inlet system of this motor.Shown in the sectional view of Fig. 8, be provided with closure 102 among the inlet air pathway 101a in the mechanism body 101 of throttle mechanisms 100.In the channel wall of this inlet air pathway 101a, be formed with chamber 111.Chamber 111 by intercommunicating pore 112 and negative pressure be taken into mouthfuls 104 with the inlet air pathway 101a in the downstream side of closure 102 in be communicated with.In addition, chamber 111 is by intercommunicating pore 113 and 109 interior connections of intake manifold.In addition, chamber 111 is communicated with pressure transducer 105 by negative pressure taking-up flexible pipe 106.Pressure transducer 105 detects in inlet air pathway 101a and takes out the air inlet pressure (negative pressure) that flexible pipe 106 imports by chamber 111 and negative pressure.
Adopt the air inlet system of above-mentioned motor, the negative pressure of the path wall upper shed of the inlet air pathway 101a of mechanism body 101 be taken into mouthfuls 104 be configured in and be positioned near the full close position closure 102 downstream sides with the peripheral part position adjacent.In addition, easily the peripheral part in the downstream side that is positioned near the closure 102 the full close position produces the maelstrom of the inlet stream that is caused by closure 102.Therefore, negative pressure is taken into mouthfuls 104 near closure 102 is positioned at full close position the time, is subjected near the influence of the eddy current of the inlet stream that generates the peripheral part of the downstream side of this closure 102 easily; When closure 102 is in aperture beyond it, do not allow to be subject near the vortes interference of the inlet stream that generates the downstream side peripheral part of closure 102.Therefore, be taken into the size of influence of the eddy current of mouthfuls 104 suffered inlet stream according to negative pressure, be taken into mouthful 104 air inlets that import to negative pressure taking-up flexible pipe 106 from negative pressure and press (negative pressure) inhomogeneous, just exist the such problem of detection performance reduction that pressure transducer is pressed air inlet thus.
The model utility content
Problem to be solved in the utility model is to provide a kind of air inlet system that can improve pressure transducer to the motor of the detection performance of air inlet pressure.
Above-mentioned problem can be solved by the engine intake duct of being put down in writing with technical solution of the present invention that is configured to main idea.
That is, the air inlet system of the technical solution of the utility model 1 described motor, the inlet air pathway of mechanism body is opened and closed by closure.Importing air inlet that path imports by pressure in the inlet air pathway of mechanism body presses and is detected by pressure transducer.And pressure imports the pressure that path has at the path wall opening of the inlet air pathway of mechanism body and is taken into mouth, and this pressure is taken into the position that mouth is configured in the influence of the eddy current of avoiding the suction stream that closure causes.Therefore, irrelevant with the aperture of closure, the pressure that can avoid pressure importing path is taken into the influence that mouth is subjected to the eddy current of inlet stream.Therefore, can suppress to be taken into mouth and import to pressure and import inhomogeneous that air inlet the path presses, can improve the detection performance that pressure transducer is pressed air inlet from pressure.
In addition, the air inlet system of the technical solution of the utility model 2 described motors, the long-pending big path expansion section of passage sections that can be taken into mouth at the pressure that the long-pending specific pressure of passage sections imports path reduces to be taken into mouthful pressure oscillation that the air inlet that imports is pressed from this pressure.
In addition, the air inlet system of the technical solution of the utility model 3 described motors, the inlet air pathway of mechanism body is opened and closed by closure.Importing air inlet that path imports by pressure in the inlet air pathway of mechanism body presses and is detected by pressure transducer.And pressure imports a plurality of pressure that path has at the path wall opening of the inlet air pathway of mechanism body and is taken into mouth, and these a plurality of pressure are taken into the position that mouth is configured in the influence of the eddy current of avoiding the suction stream that closure causes.Therefore, irrelevant with the aperture of closure, a plurality of pressure that can avoid pressure importing path are taken into the influence that mouth is subjected to the eddy current of inlet stream.Therefore, can suppress to be taken into mouth and import to pressure and import inhomogeneous that air inlet the path presses, can improve the detection performance that pressure transducer is pressed air inlet from a plurality of pressure.
In addition, the air inlet system of the technical solution of the utility model 4 described motors, in the long-pending long-pending big path expansion section of passage sections that is taken into mouthful than a plurality of pressure of passage sections, can make from a plurality of pressure to be taken into mouthful air inlet pressing that imports and can to reduce the pressure oscillation that this air inlet is pressed.
In addition, the air inlet system of the technical solution of the utility model 5 described motors can be taken into 1 pressure the mouth from a plurality of pressure and be taken into mouth and will flow into the foreign matter that pressure imports in the path and be discharged in the inlet air pathway.Thus, can prevent or reduce foreign body retention in pressure imports path.
In addition, the air inlet system of the technical solution of the utility model 6 described motors by unit being installed on the mechanism body of throttle mechanisms, can easily be installed in IACV (Idle Air Control Valve) and pressure transducer on the throttle mechanisms.
Adopt the air inlet system of motor of the present utility model, can improve the detection performance that pressure transducer is pressed air inlet.
Description of drawings
Fig. 1 is the sectional view of air inlet system of expression the utility model one embodiment's motor.
Fig. 2 is the II-II sectional view of Fig. 1.
Fig. 3 is the III-III sectional view of Fig. 2.
Fig. 4 is the sectional view of the decomposing state of expression throttle mechanisms and unit.
Fig. 5 is the sectional view of expression pressure transducer.
Fig. 6 is the sectional view of expression IACV (Idle Air Control Valve).
Fig. 7 is the sectional view of expression temperature transducer.
Fig. 8 represents the sectional view of the air inlet system of the motor of example in the past.
Embodiment
Below, with reference to following embodiment, illustrate and implement best mode of the present utility model.
Embodiment
An embodiment of the present utility model is described with reference to the accompanying drawings.The air inlet system of the motor that present embodiment explanation motor bike, band prime mover bicycle etc. are two-wheel vehicle used.In addition, Fig. 1 is the sectional view of the air inlet system of expression motor.Fig. 2 is the II-II sectional view of Fig. 1.Fig. 3 is the III-III line sectional view of Fig. 2.
As shown in Figure 1, the air inlet system 1 of motor has throttle mechanisms 2 and unit 3.In addition, Fig. 4 is the sectional view of the decomposing state of expression throttle mechanisms 2 and unit 3.In addition, for convenience of explanation, describe according to the order of throttle mechanisms 2, unit 3.
At first, the declarative section valve mechanism 2.As shown in Figure 4, throttle mechanisms 2 has the mechanism body 5 as its main body.Mechanism body 5 for example is a resin system, has the thorax wall portion 6 of basic hollow cylindrical.It in the thorax wall portion 6 thorax 7 that in Fig. 4, connects along direction in the paper table.In addition, air filter (not shown) is communicated with an end (being the left part among Fig. 2 and Fig. 3) of the upstream-side-end that becomes thorax wall portion 6.In addition, intake manifold (not shown) is communicated with the other end (right part among Fig. 2 and Fig. 3) of the end of downstream side that becomes thorax wall portion 6.Therefore, flow through next suction air by the thorax 7 in the thorax wall portion 6, flow to intake manifold from air filter.In addition, thorax 7 is equivalent to " inlet air pathway " described in this specification.
As shown in Figure 4, in above-mentioned thorax wall portion 6, dispose radially the throttle plate pin 9 that crosses (left and right directions among Fig. 4) above-mentioned thorax 7.Throttle plate pin 9 for example is a metallic, and the pairing left and right bearing hub portion 10,11 that rotatably is integrated in the thorax wall portion 6 is supporting.The Sealing 12 of rubber system is installed at the two end part of throttle plate pin 9.Two Sealings 12 flexibly and slidably contact with the inner peripheral surface of bearing hub portion 10,11 respectively, thereby will seal up between throttle plate pin 9 and the bearing hub portion 10,11.
On throttle plate pin 9, be provided with the roughly discoideus butterfly closure 14 (with reference to Fig. 2) that above-mentioned thorax 7 is opened and closed.Closure 14 rotates integratedly with throttle plate pin 9 and thorax 7 is opened and closed, and regulates thus, is that control flows is crossed the suction air quantity in the thorax 7.In addition, closure 14 is equivalent to this specification described " closure ".
Be provided with gate footstep lever 15 in an end of above-mentioned throttle plate pin 9 (being the left part among Fig. 4).Between gate footstep lever 15 and the bearing hub portion 10 relative, clamp the Returnning spring 16 that constitutes by the helical spring that is positioned at substantially on the same axis with it.Returnning spring 16 is normal towards closing the direction application of force with throttle plate pin 9 and closure 14 with gate footstep lever 15.In addition, though not shown, on gate footstep lever 15, connect and be wound with the gas pedal line that links to each other with the throttle operation device.
Be formed with rotor sensor joint 18 in the other end of above-mentioned throttle plate pin 9 (being the right part among Fig. 4).The rotor sensor 38 of the throttle position sensor 37 that unit 3 (aftermentioned) is had can be connected in rotor sensor joint 18.In addition, on said mechanism main body 5, be formed with the unit assembly department 20 of flange-like, link to each other around the bearing hub portion 11 at this unit assembly department 20 and throttle plate pin 9 the other end place.Erection unit unit 3 (aftermentioned) (with reference to Fig. 1) as attachment face 20a, is come in the exterior edge face of unit assembly department 20.
As shown in Figure 3, be formed with the bypass inlet opening 21 of straight line shape in the side by the unit assembly department of said mechanism main body 5.Than above-mentioned throttle plate pin 9 more by the position of upstream side (be the left side among Fig. 3), bypass inlet opening 21 lean on thorax one side opening in the path wall 8 of thorax 7.In addition, a side opening opposite with thorax of bypass inlet 21 is in the attachment face 20a of unit assembly department 20 (with reference to Fig. 3).
As shown in Figure 2, the side by the unit assembly department in said mechanism main body 5 is formed with bypass exit orifice 22.Locating by downstream example (being the right side among Fig. 2) than above-mentioned throttle plate pin 9, bypass exit orifice 22 by thorax one side opening in the path wall 8 of the thorax 7 of mechanism body 5.So, the opening portion 22a by thorax one side of bypass exit orifice 22 forms skewed with respect to thorax wall portion 6 in the downstream side of the path wall 8 end of downstream side 14a, thorax 7 of the closure 14 of facing full-shut position, make to suck the downstream side central part outflow of air (auxiliary air) towards thorax 7.In addition, a side opening opposite with thorax of bypass exit orifice 22 is in the attachment face 20a of unit assembly department 20 (with reference to Fig. 3).
As shown in Figure 3, on the attachment face 20a of the unit of said mechanism main body 5 assembly department 20, be formed with the bypass path groove 23 that above-mentioned bypass inlet opening 21 is connected with above-mentioned bypass exit orifice 22.So, in the way of bypass path groove 23, formed upstream side passage portion 23a and the separated partition wall 24 of downstream side passage portion 23b with bypass path groove 23.Partition wall 24 has the 24a of midfeather portion, and the 24a of this midfeather portion is parallel to the attachment face 20a of unit assembly department 20 at the central part of the thickness of slab direction (left and right directions) of unit assembly department 20.Be formed with upstream side passage portion 23a in the outside of the 24a of midfeather portion, in addition, be formed with downstream side passage portion 23b in the inboard of the 24a of midfeather portion.On the 24a of midfeather portion, be formed with the intercommunicating pore 25 that upstream side passage portion 23a is connected with downstream side passage portion 23b.Intercommunicating pore 25 is formed on the axis 25L (with reference to Fig. 6) with the attachment face 20a quadrature of unit assembly department 20.Towards the open end of the intercommunicating pore 25 of the outer openings of the 24a of midfeather portion as seat portion 26.Seat portion 26 opens and closes along moving of axial direction (being above-below direction among Fig. 3) by the valve body 64 of IACV (Idle Air Control Valve) 35 (aftermentioned).
As shown in Figure 2, the air inlet temperature that is formed with the straight line shape adjacent with above-mentioned bypass inlet opening 21 in the unit of said mechanism main body 5 assembly department side detects with through hole 27.The air inlet temperature detects with thorax one side of leaning on of through hole 27 and is more leaning on path wall 8 openings of upstream side (being the left side among Fig. 3) towards the thorax 7 of mechanism body 5 than above-mentioned throttle plate pin 9.In addition, the air inlet temperature detection attachment face 20a opening (with reference to Fig. 7) of a side opposite of through hole 27 towards unit assembly department 20 with thorax.
As shown in Figure 2, be formed with a plurality of (having illustrated 2 among Fig. 2) pressure in the unit of said mechanism main body 5 assembly department side and be taken into mouth 28.Two pressure are taken into thorax one side of leaning on of mouth 28 and are more leaning on downstream side (right side among Fig. 2) to be opened on the path wall 8 of the thorax 7 of mechanism body 5 than above-mentioned throttle plate pin 9.So, two pressure be taken into mouthfuls 28 by the position opening of thorax one side towards near the vortes interference of the inlet stream of avoiding closure 14 downstream side peripheral parts, generating." avoiding the position near the vortes interference of the inlet stream that generates the closure 14 downstream side peripheral parts " described here for example is equivalent to be arranged in the periphery on the above-mentioned plane in downstream side of end of downstream side 14a of closure 14 on the plane that comprises thorax 7 axis 7L and throttle plate pin 9 axis 9L (with reference to Fig. 1), during full-gear (Fig. 2 is with reference to double dot dash line 14).In the present embodiment, near the two pressure upstream side that is taken into mouthfuls 28 suction air (auxiliary air) stream that in the position of the vortes interference of the inlet stream of avoiding generating, promptly flows out at the opening portion 22a by thorax one side from above-mentioned bypass exit orifice 22 by thorax one side closure 14 downstream side peripheral parts is being avoided the position opening of this suction air influence.In addition, two pressure are taken into mouthfuls 28 avoiding near the position of the vortes interference of the inlet stream that generates the closure 14 downstream side peripheral parts and avoiding among the position of the influence of the suction air (auxiliary air) that flows out by thorax one 22a of side opening portion of above-mentioned bypass exit orifice 22 by thorax one side, at the position opening of close upstream side.In addition, two pressure be taken in mouthfuls 28, when throttle mechanisms 2 is installed on the two-wheel vehicle, the pressure that is arranged in ground side (for example Fig. 3 downside) in the direction of the world is taken into mouthful 28 (reference character is (A)) and can will flow into pressure and import the foreign matter of path 49 (aftermentioned) to thorax 7 discharges.
In addition, above-mentioned two pressure are taken into a side opening opposite with thorax of mouth 28 in the attachment face 20a of the unit of said mechanism main body 5 assembly department 20.So, on the attachment face 20a of unit assembly department 20, formed the pressure lead-in groove 29 that is taken into the opposite side connection with thorax of mouth 28 with two pressure.Pressure lead-in groove 29 has path expansion section 30, communication passage portion 31 and sensor side passage portion 32, extend along the longitudinal direction that communication two pressure are taken into an opposite side with thorax of mouth 28 path expansion section 30, upstream side towards thorax 7 extends communication passage portion 31 abreast from the upper end portion of path expansion section 30, and sensor side passage portion 32 is extended along longitudinal direction towards the below from the front end of this communication passage portion 31.Path expansion section 30 is to form with the big groove width (width that is equivalent to left and right directions among Fig. 2) of bore that is taken into mouth 28 than two pressure.In addition, (groove width of communication passage portion 31 is equivalent to the width of above-below direction to the groove width of communication passage portion 31 and sensor side passage portion 32 in Fig. 2, the groove width of sensor side passage portion 32 is equivalent to the width of left and right directions in Fig. 2) to be taken into mouthfuls 28 bore than two pressure big, and littler than the groove width of path expansion section 30.In forming the pressure lead-in groove 29 of labyrinth-like like this, accommodate from thorax 7 and be taken into the foreign matter that mouth 28 enters with air, arrive pressure transducer 41 (aftermentioned) thereby can prevent or reduce this foreign matter by two pressure.
Below, the unit 3 on the unit assembly department 20 of the mechanism body 5 that is installed in above-mentioned throttle mechanisms 2 is described.As shown in Figure 4, unit 3 be with the device assembles relevant with motor to equipment seat 43 and form.In the present embodiment, be throttle position sensor 37, pressure transducer 41 (with reference to Fig. 5), IACV (Idle Air Control Valve) 35 (with reference to Fig. 6) and temperature transducer 39 (with reference to Fig. 7) as the equipment relevant with motor are assembled on the equipment seat 43 and have constituted unit 3.In addition, Fig. 5 is the sectional view of expression pressure transducer, and Fig. 6 is the sectional view of expression IACV (Idle Air Control Valve), and Fig. 7 is the sectional view of expression temperature transducer.
As shown in Figure 4, above-mentioned equipment seat 43 for example is a resin system, and the attachment face 20a that available bolt (not shown) etc. is fastened on the unit assembly department 20 of said mechanism main body 5 goes up (with reference to Fig. 1).Equipment seat 43 going up with the sealed shape joint lid 44 that has covered throttle position sensor 37, pressure transducer 41 (with reference to Fig. 5) and temperature transducer 39 (with reference to Fig. 7) is arranged with faces throttle mechanisms 2 opposite sides (being called anti-installation side) (being right flank among Fig. 4).
As shown in Figure 4, be formed with bearing surface 45 leaning on the face of throttle mechanisms 2 one sides (being called installation side) of the said equipment seat 43, this bearing surface 45 can contact the attachment face 20a butt of the unit assembly department 20 of shape and said mechanism main body 5 with face.
When being installed to equipment seat 43 on the unit assembly department 20, the open end face of the above-mentioned bypass path groove 23 of bearing surface 45 sealings of equipment seat 43 has formed the bypass path 47 (with reference to Fig. 3) that closes the cross section of walking around above-mentioned closure 14 thus in this bypass path groove 23.Bypass path 47 respectively be formed at unit assembly department 20 on bypass inlet opening 21 and bypass exit orifice 22 be communicated with.In addition, bypass path 47 is equivalent to " the auxiliary air path " described in this specification.In addition, the suction air that flows in the bypass path 47 is equivalent to " auxiliary air " described in this specification.
In addition, in the time of on the unit assembly department 20 that equipment seat 43 is installed to said mechanism main body 5, the open end of the above-mentioned pressure lead-in groove 29 of bearing surface 45 sealings of the said equipment seat 43 has formed the pressure that closes the cross section thus and has imported path 49 (with reference to Fig. 5) in pressure lead-in groove 29.Pressure import path 49 will be formed at above-mentioned two pressure on the unit assembly department 20 be taken into mouthfuls 28 and Pressure testing hole 53 (aftermentioned) be connected.
As shown in Figure 3, be formed with valve head embedding hole 50 on the said equipment seat 43, this valve head embedding hole 50 is used for the valve head 36 of chimeric above-mentioned IACV (Idle Air Control Valve) 35 (aftermentioned).In the time of on the unit assembly department 20 that equipment seat 43 is installed to said mechanism main body 5, valve head embedding hole 50 facing to above-mentioned bypass path 47 (specifically, be the upstream side passage portion 23a of bypass path groove 23), and be positioned at same axis 25L with the intercommunicating pore 25 of unit assembly department 20 and go up (with reference to Fig. 6).The bore of valve head embedding hole 50 forms greatlyyer than the intercommunicating pore 25 of unit assembly department 20.
As shown in Figure 5, on the said equipment seat 43, be formed with Pressure testing hole 53.As shown in Figure 5, in the time of on the unit assembly department 20 that equipment seat 43 is installed to said mechanism main body 5 (with reference to Fig. 1), Pressure testing hole 53 imports path 49 (specifically, being the sensor side passage portion 32 of above-mentioned pressure lead-in groove 29) with above-mentioned pressure and is communicated with.In addition, be formed with the step hole portion 54 that the bore with Pressure testing hole 53 increases interimly in the side opposite of equipment seat 43 (being the right side among Fig. 5) with installation side.Step hole portion 54 forms can chimeric pressure transducer 41 (aftermentioned).
As shown in Figure 7, be formed with the temperature detection that the round-ended cylinder shape the is arranged tube portion 51 that protrudes on the bearing surface 45 on the said equipment seat 43.Temperature detection can be inserted into above-mentioned air inlet temperature and detect with in the through hole 27 when forming on the unit assembly department 20 that equipment seat 43 is installed to said mechanism main body 5 with tube portion 51.In addition, temperature detection tube portion 51 an interior side opposite (being the right side among Fig. 7) openings, but and the thermistor 77 of built-in temperature sensor 39 (aftermentioned) with installation side towards equipment seat 43.
As shown in Figure 4, on the said equipment seat 43, be formed with connector portion 55 by resin moulded shaping.Connector portion 55 is used for each connector portion relevant with throttle position sensor 37, pressure transducer 41 (with reference to Fig. 5), IACV (Idle Air Control Valve) 35 (with reference to Fig. 6) and temperature transducer 39 (with reference to Fig. 7) pooled together and forms, and disposes the terminal 56 of regulation radical.In addition, connector portion 55 form by for and insert and can be connected by the external plug (not shown) that the control mechanism 58 that electronic control unit (ECO) constitutes is electrically connected.Control mechanism 58 is according to controlling various devices from the output signal of various feeler mechanisies such as throttle position sensor 37, pressure transducer 41, IACV (Idle Air Control Valve) 35, temperature transducer 39 and other not shown sensor, switch.In addition, control mechanism 58 is according to controlling IACV (Idle Air Control Valve) 35 from the output signal of various feeler mechanisies.
In addition, in the said equipment seat 43 that has been sealed by above-mentioned lid 44, be assembled with circuit board 60 with throttle position sensor 37, pressure transducer 41 (with reference to Fig. 5) and temperature transducer 39 (with reference to Fig. 7).Be electrically connected at the conductive part (not shown) of circuit board 60 and follow each tenminal block 56 of above-mentioned connector portion 55.
Below, isc valve 35, throttle position sensor 37, temperature transducer 39 and pressure transducer 41 are described successively.
At first, IACV (Idle Air Control Valve) (below be called " isc valve ") 35 is described.In addition, as shown in Figure 6, be that benchmark illustrates this isc valve 35 with valve body 64 state down.
As shown in Figure 6, isc valve 35 is installed in a side opposite with installation side of the said equipment seat 43, comes control flows to cross the suction air quantity of bypass path 47 by the seat portion 26 that opens and closes the partition wall 24 in the said mechanism main body 5.Isc valve 35 has as the stepper motor 62 of actuator and valve body 64.
In addition, valve body 64 is located at the front end of above-mentioned shaft component 70 integratedly.Between valve body 64 and aforementioned retainer 71, clamp the valve spring 73 that constitutes by helical spring.Valve body 64 is often pushed towards the below by the elasticity of valve spring 73.
Above-mentioned isc valve 35 releasably is fixed on the said equipment unit 3 by (not shown) such as bolts.At this moment, the valve head 36 of isc valve 35 is entrenched in the valve head embedding hole 50 of equipment seat 43.In addition, by unit 3 being installed on the unit assembly department 20 of said mechanism main body 5, the valve body 64 of isc valve 35 is engaged in this intercommunicating pore 25 along the axis 25L identical with the intercommunicating pore 25 of unit assembly department 20.In addition, when the race of engine, the stepper motor 62 of isc valve 35 carries out drive controlling by control mechanism 58 (with reference to Fig. 1).
Sealed under the state (double dot dash line 64 in reference to Fig. 6) of the seat portion 26 of above-mentioned intercommunicating pore 25 at the valve body 64 of above-mentioned isc valve 35, when from control mechanism 58 (with reference to Fig. 1) during to stepper motor 62 output valve opening signals, motor rotor 68 is towards valve opening position rotation (for example just changeing).Therefore, retreat (among Fig. 6 for up moving) with shaft component 70, thereby open seat portion 26 (in Fig. 6 with reference to solid line 64) by making valve body 64.In addition, under the state of opening of isc valve 35, when from control mechanism 58 when valve signal is closed in stepper motor 62 output, motor rotor 68 is towards closing valve direction rotation (for example counter-rotating).Therefore, advance (among Fig. 6 down moving) with shaft component 70, thereby close seat portion 26 (at Fig. 6 with reference to double dot dash line 64) by making valve body 64.As mentioned above, the advance and retreat that valve body 64 carries out established amount according to the drive controlling of stepper motor 62 move, and regulate thus, be the suction air quantity that control flows is crossed bypass path 47.
Below, declarative section valve position sensor 37.As shown in Figure 4, throttle position sensor 37 has the rotor sensor 38 that rotatably is located in the said equipment seat 43.Rotor sensor 38 by on the unit assembly department 20 that unit 3 is installed to said mechanism main body 5 time and the rotor sensor joint 18 of above-mentioned throttle plate pin 9 chimeric, thereby with throttle plate pin 9 connect into can with its one rotation (with reference to Fig. 1).In addition, be provided with the self-cleaning contact 38a that on above-mentioned circuit board 60, slides on the rotor sensor 38.Along with the rotation of rotor sensor 38, self-cleaning contact 38a slides on circuit board 60, thus 37 pairs of above-mentioned control mechanisms 58 of throttle position sensor (with reference to Fig. 1) output detection signal.
Below, temperature transducer 39 is described.As shown in Figure 7, temperature transducer 39 constitutes based on thermistor 77.Thermistor 77 is installed on the above-mentioned circuit board 60.By circuit board 60 is configured on the said equipment seat 43,, thermistor 77 uses in the tube portion 51 thereby being inserted into the temperature detection of equipment seat 43.In addition, in the time of on the unit assembly department 20 that unit 3 is installed in said mechanism main body 5 (with reference to Fig. 1), the temperature detection of equipment seat 43 detects with in the through hole 27 (with reference to Fig. 7) with the air inlet temperature that tube portion 51 is inserted into unit 3.Meanwhile, temperature detection is projected in the thorax 7 with the front end of tube portion 51.The temperature detection of thermistor 77 detection facility seats 43 is exported to testing signal above-mentioned control mechanism 58 (with reference to Fig. 1) thus with the temperature around tube portion 51 front ends, promptly flow through the temperature (air inlet temperature) of the suction air in the thorax 7.
Below, pressure transducer 41 is described.As shown in Figure 5, pressure transducer 41 is installed on the above-mentioned circuit board 60.By circuit board 60 is configured on the equipment seat 43, pressure transducer 41 is entrenched in the step hole portion 54 of equipment seat 43.In addition, the pressure detecting portion 42 that had of pressure transducer 41 is relative with the Pressure testing hole 53 of equipment seat 43.In addition, in the time of on the unit assembly department 20 that unit 3 is installed to said mechanism main body 5 (with reference to Fig. 1), pressure transducer 41 detects by the pressure of Pressure testing hole 42 effects, the air inlet that promptly imports closure 14 downstream sides that path 49 imports by pressure and presses (negative pressure), thereby testing signal is exported to above-mentioned control mechanism 58 (with reference to Fig. 1).
As mentioned above, install the said equipment unit 3 (with reference to Fig. 4) (with reference to Fig. 1) on the unit assembly department 20 of the mechanism body 5 by equipment seat 43 being fastened on throttle mechanisms 2 with (not shown) such as bolts.In addition, between equipment seat 43 and unit assembly department 20, clamp the pad 79 that flexibly seals between the two.Pad 79 forms irregular mesh-shape, with respectively around the mechanical connecting part between unit assembly department 20 and the unit 3, and air communication state partly seal.
In addition, in the time of on the unit assembly department 20 that equipment seat 43 is installed to mechanism body 5 (with reference to Fig. 1), the bearing surface 45 of equipment seat 43 is the open end face closure of the bypass path groove 23 of unit assembly department 20, formed thus to close the cross section and bypass path 47 (with reference to Fig. 3) that bypass inlet opening 21 is connected with bypass exit orifice 22.
In addition, the rotor sensor 38 of throttle position sensor 37 is by chimeric with the rotor sensor joint 18 of throttle plate pin 9 and be connected (with reference to Fig. 1) with it.Therefore, throttle position sensor 37 can detect the aperture of closure 14 according to the rotation of rotor sensor 38.
In addition, the valve body 64 of isc valve 35 is engaged in same axis 25L upward (with reference to Fig. 6) with the seat portion 26 of the intercommunicating pore 25 of unit assembly department 20.Therefore, isc valve 35 moves the seat portion 26 that opens and closes intercommunicating pore 25 according to the advance and retreat of the valve body 64 that is driven by stepper motor 62, and control flows is crossed the auxiliary air amount of bypass path 47 thus.
In addition, the temperature detection of equipment seat 43 detects with in the through hole 27 with the air inlet temperature that tube portion 51 is inserted into unit assembly department 20, and this temperature detection reaches in the thorax 7 (with reference to Fig. 7) with the front end of tube portion 51.Therefore, temperature detection is exposed in the suction air that flows in the thorax 7 with the front end of tube portion 51.Thus, temperature transducer 39 can be according to the temperature detection energy of thermistor 77, detects the temperature that flows in the suction air in the thorax 7, is the air inlet temperature.
In addition, the bearing surface 45 of equipment seat 43 is the open end face closure of the pressure lead-in groove 29 of unit assembly department 20, formed thus close the cross section and with two pressure be taken into mouthfuls 28 and the pressure that is connected of Pressure testing hole 53 import path 49 (with reference to Fig. 5).Accompany therewith, Pressure testing hole 53 and pressure import in the sensor side passage portion 32 of path 49 and are communicated with.Therefore, pressure transducer 41 can import the air inlets that path 49 detects in the thorax 7 by pressure and presses (negative pressure), is that air inlet is pressed.
Adopt the air inlet system 1 of above-mentioned motor, the thorax 7 of mechanism body 5 is by the rotation of closure 14 and open and close.In the thorax 7 of mechanism body 5, import the air inlet pressure (negative pressure) of path 49 importings by pressure transducer 41 detections (with reference to Fig. 5) by pressure.And pressure imports path 49 to have 2 pressure on the path wall 8 of thorax 7 of mechanism body of being opened on 5 and is taken into mouthfuls 28, and these 2 pressure are taken into mouthfuls 28 positions (with reference to Fig. 2) that are configured in the vortes interference of avoiding the suction stream that closure 14 causes.Therefore, irrelevant with the aperture of closure 14,2 pressure can avoiding pressure importing path 49 are taken into the influence that mouth 28 is subjected to the eddy current of inlet stream.Therefore, can suppress to be taken into mouthfuls 28 and import to pressure and import inhomogeneous that the air inlets of path 49 press, can improve the detection performance that 41 pairs of air inlets of pressure transducer are pressed from 2 pressure.
In addition, the passage sections that is taken into mouth 28 at 2 pressure of the long-pending ratio of passage sections is amassed on the big path expansion section 30, can make from 2 pressure and be taken into mouthful 28 air inlet pressings that import also, and can reduce the pressure oscillation of this air inlet pressure.
In addition, two pressure be taken in mouthfuls 28, be installed in pressure under the state on the two-wheel vehicle, that on the direction of the world, be arranged in ground side (Fig. 2 be a downside) in throttle mechanisms 2 and be taken into mouthfuls 28 and become and can will flow into the foreign matter that pressure imports path 49 and be taken into mouth 28 to the pressure of thorax 7 discharges.Therefore, can be taken into pressure among mouthfuls 28, that be arranged in ground side (Fig. 3 downside) from 2 pressure is taken into mouthful 28 (A) and will flow into pressure and import the foreign matter of path 49 to thorax 7 discharges.Thus, can prevent or reduce foreign body retention in pressure imports path 49.
In addition, by unit 3 being installed on the mechanism body 5 of throttle mechanisms 2, can easily IACV (Idle Air Control Valve) 35 and pressure transducer 41 be installed in (with reference to Fig. 1) on the throttle mechanisms 2.
In addition, in the above-described embodiments, example shows pressure importing path 49 (with reference to Fig. 5) and has the situation that 2 pressure are taken into mouthful 28 (with reference to Fig. 2), but the pressure that pressure importing path 49 also can have more than 3 is taken into mouth 28.In addition, pressure imports path 49 and also can have 1 pressure and be taken into mouthfuls 28.At this moment similarly, be taken into mouthfuls 28 positions that are configured in the influence of the eddy current of avoiding the suction stream that closure 14 causes by the pressure that pressure is imported path 49, thus, irrelevant with the aperture of closure 14, the pressure that can avoid pressure importing path 49 is taken into the influence that mouth 28 is subjected to the eddy current of inlet stream.Therefore, can suppress to be taken into mouthfuls 28 and import to pressure and import inhomogeneous that the air inlets of path 49 press, can improve the detection performance that pressure transducer 41 (with reference to Fig. 5) is pressed air inlet from pressure.In addition, if importing path 49, pressure has path expansion section 30, this path expansion section 30 and pressure be taken into mouthfuls 28 is communicated with and its passage sections long-pending to be taken into mouthfuls 28 passage sections than this pressure long-pending big, then can reduce to be taken into the pressure oscillation of the air inlets pressure of mouthful 28 importings in path expansion section 30 from pressure.
The utility model is not limited to the foregoing description, can change in the scope that does not break away from the utility model main idea.For example, the four-wheel vehicular engine beyond engine intake duct 1 of the present utility model single cylinder 4 two-stroke engines of also going in the two-wheel vehicle being adopted, multiple cylinder engine, 2 two-stroke engines etc.In addition, also can make isc valve 35, throttle position sensor 37, temperature transducer 39 and pressure transducer 41 apparatus assembly formation device unit 3 in addition.In addition, isc valve 35 and pressure transducer 41 modularization forming apparatus unit 3 are got final product.In addition, isc valve 35, throttle position sensor 37, temperature transducer 39, pressure transducer 41 and miscellaneous equipment also can not modularization forming apparatus unit 3, but are installed in respectively on the throttle mechanisms 2.In addition, as the actuator of isc valve 35, also can use the stepper motor in replacement the foregoing descriptions such as DC motor, brushless motor, o.
Claims (8)
1. the air inlet system of a motor, it has throttle mechanisms and pressure transducer, above-mentioned throttle mechanisms is provided with the closure that opens and closes above-mentioned inlet air pathway on the mechanism body that forms an engine charge path part, above-mentioned pressure transducer detects in the inlet air pathway of said mechanism main body and imports the air inlet pressure that path imports by pressure, it is characterized in that
The pressure that above-mentioned pressure importing path has the path wall of the inlet air pathway that is opened on the said mechanism main body is taken into mouth;
Above-mentioned pressure is taken into the position that mouth is configured in the influence of the eddy current of avoiding the suction stream that above-mentioned closure causes.
2. the air inlet system of motor according to claim 1 is characterized in that,
Above-mentioned pressure imports path to have and is taken into above-mentioned pressure that mouth is communicated with and the long-pending passage sections that is taken into mouth than this pressure of passage sections is amassed big path expansion section.
3. the air inlet system of motor according to claim 1 and 2 is characterized in that,
Has the unit on the mechanism body that can be installed in above-mentioned throttle mechanisms;
Modularization has control to walk around IACV (Idle Air Control Valve), and the above-mentioned pressure transducer of auxiliary air amount of the auxiliary air path of above-mentioned closure on the said equipment unit.
4. the air inlet system of a motor, it has throttle mechanisms and pressure transducer, above-mentioned throttle mechanisms is provided with the closure that opens and closes above-mentioned inlet air pathway on the mechanism body that forms an engine charge path part, above-mentioned pressure transducer detects in the inlet air pathway of said mechanism main body and imports the air inlet pressure that path imports by pressure, it is characterized in that
A plurality of pressure that above-mentioned pressure importing path has the path wall of the inlet air pathway that is opened on the said mechanism main body are taken into mouth;
Above-mentioned a plurality of pressure is taken into the position that mouth is configured in the influence of the eddy current of avoiding the suction stream that above-mentioned closure causes.
5. the air inlet system of motor according to claim 4 is characterized in that,
Above-mentioned pressure imports path to have and is taken into above-mentioned a plurality of pressure that mouth is communicated with and the long-pending passage sections that is taken into mouth than these pressure of passage sections is amassed big path expansion section.
6. according to the air inlet system of claim 4 or 5 described motors, it is characterized in that,
Above-mentioned a plurality of pressure is taken into 1 pressure in the mouth and is taken into and mouthful can will flow into the foreign matter that above-mentioned pressure imports in the path and be discharged in the above-mentioned inlet air pathway.
7. according to the air inlet system of claim 4 or 5 described motors, it is characterized in that,
Has the unit on the mechanism body that can be installed in above-mentioned throttle mechanisms;
Modularization has control to walk around IACV (Idle Air Control Valve), and the above-mentioned pressure transducer of auxiliary air amount of the auxiliary air path of above-mentioned closure on the said equipment unit.
8. the air inlet system of motor according to claim 6 is characterized in that,
Has the unit on the mechanism body that can be installed in above-mentioned throttle mechanisms;
Modularization has control to walk around IACV (Idle Air Control Valve), and the above-mentioned pressure transducer of auxiliary air amount of the auxiliary air path of above-mentioned closure on the said equipment unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006020681A JP2007198346A (en) | 2006-01-30 | 2006-01-30 | Intake device of engine |
| JP2006020681 | 2006-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201053348Y true CN201053348Y (en) | 2008-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200012521U Expired - Fee Related CN201053348Y (en) | 2006-01-30 | 2007-01-16 | Engine air intake device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007198346A (en) |
| CN (1) | CN201053348Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298651A (en) * | 2014-06-03 | 2016-02-03 | 爱三工业株式会社 | Throttle control device for vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935659U (en) * | 1982-08-30 | 1984-03-06 | 株式会社日本気化器製作所 | Negative pressure outlet passage of feedback air-fuel ratio control device |
| JPH0718989Y2 (en) * | 1988-12-29 | 1995-05-01 | スズキ株式会社 | Pressure detector |
| JPH0310236U (en) * | 1989-06-16 | 1991-01-31 | ||
| JP3203628B2 (en) * | 1992-10-28 | 2001-08-27 | 株式会社デンソー | Intake throttle valve device for internal combustion engine |
| JP3377305B2 (en) * | 1994-07-06 | 2003-02-17 | 株式会社ミクニ | Negative pressure measuring device for intake passage |
| JPH08261080A (en) * | 1995-03-28 | 1996-10-08 | Mikuni Corp | Structure of pressure introduction passage of throttle body |
| JP2001234761A (en) * | 2000-02-21 | 2001-08-31 | Hitachi Ltd | Module for internal combustion engine and intake device |
| JP2005337041A (en) * | 2004-05-25 | 2005-12-08 | Mikuni Corp | Intake air quantity control device |
-
2006
- 2006-01-30 JP JP2006020681A patent/JP2007198346A/en active Pending
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2007
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298651A (en) * | 2014-06-03 | 2016-02-03 | 爱三工业株式会社 | Throttle control device for vehicle |
| CN105298651B (en) * | 2014-06-03 | 2018-04-20 | 爱三工业株式会社 | Vehicle air throttle control device |
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| JP2007198346A (en) | 2007-08-09 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 Termination date: 20110116 |