CN1505732A - Engine intake device - Google Patents
Engine intake device Download PDFInfo
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- CN1505732A CN1505732A CNA028089537A CN02808953A CN1505732A CN 1505732 A CN1505732 A CN 1505732A CN A028089537 A CNA028089537 A CN A028089537A CN 02808953 A CN02808953 A CN 02808953A CN 1505732 A CN1505732 A CN 1505732A
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- mentioned
- valve
- bypass
- bypass valve
- valve chamber
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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
- F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
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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
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
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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
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/0015—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for using exhaust gas sensors
- F02D35/0023—Controlling air supply
- F02D35/003—Controlling air supply by means of by-pass passages
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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
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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
- F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
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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)
Abstract
In an intake system for an engine, a joint surface (11a) of a device block (11) is coupled to a mounting surface (1a) of a throttle body (1) parallel to an intake passage (2), and a bypass passage (15) is comprised of a bypass inlet bore (20) provided to permit the communication between an upstream portion of the intake passage (2) and the mounting surface (1a), a bypass outlet bore (21) provided to permit the communication between a downstream portion of the intake passage (2) and the mounting surface (1a), an upstream groove (16) defined in the joint surface (11a), a downstream groove (17) defined in the joint surface (11a), and a valve chest (22) provided to permit the communication between the upstream groove (16) and the downstream groove (17). The bypass valve (25) facing the valve chest (22) and an actuator (28) are disposed in the device block (11) in parallel to the joint surface (11a), and a throttle sensor (8) is disposed in the device block (11). Thus, it is possible to compactly construct the intake system of the engine including the bypass valve and the actuator for the bypass valve, leading to enhancements in workability and assemblability.
Description
Technical field
The present invention relates to the suction means of motor, particularly, relate to improvement to suction means, this improvement is that the bypass passageways of walking around closure is connected on the air intake passage that is provided with closure of throttle body, and the actuator of switch drive bypass valve is connected on the bypass valve of switch bypass passageways.
Background technique
The suction means of above-described motor is known, for example, discloses on the fair 6-45654 communique of the reality of Japan.
In this engine air-suction apparatus in the past, all bypass passageways all forms on throttle body, and, because closure and actuator all are installed on the throttle body, except throttle body need carry out complicated processing, also must all parts all be assembled in throttle body originally on one's body, therefore, exist assembling performance bad shortcoming.
Summary of the invention
The present invention is because above these situations and proposing, and its objective is that a kind of processibility and assembling are provided is functional, and the engine air-suction apparatus of compact structure.
For achieving the above object, the suction means of motor of the present invention, the bypass passageways of walking around closure is connected on the air intake passage that is provided with closure of throttle body, and the actuator of switch drive bypass valve is connected on the bypass valve of switch bypass passageways, it first is characterised in that, the junction plane of device blocks is incorporated on the attachment face of that form on the throttle body and parallel axes air intake passage; Bypass passageways is made of following each several part: be arranged to pass throttle body, the bypass passageways inlet hole that is communicated with between the air intake passage of closure upstream and the above-mentioned attachment face; Be arranged to pass throttle body, the bypass passageways exit orifice that is communicated with between the air intake passage in closure downstream and the above-mentioned attachment face; On above-mentioned junction plane, form, be connected with above-mentioned bypass passageways inlet hole, and the upstream slot part that open surface is closed with above-mentioned attachment face; On above-mentioned junction plane, form, be connected with above-mentioned bypass passageways exit orifice, and the downstream slot part that open surface is closed with above-mentioned attachment face; Valve chamber inlet hole in the bottom land upper shed of the downstream end of above-mentioned upstream slot part; Valve chamber exit orifice in the bottom land upper shed of the end, upstream of above-mentioned downstream slot part; And be arranged on the above-mentioned device blocks, be communicated with the valve chamber of above-mentioned valve chamber inlet hole and valve chamber exit orifice, in addition, also, make it parallel with above-mentioned junction plane being arranged on the device blocks facing to the bypass valve of above-mentioned valve chamber and the actuator of this bypass valve of switch; In addition, on above-mentioned device blocks, also be provided with the throttle sensor of the aperture that detects above-mentioned closure.
According to above-mentioned first feature, in the manufacturing procedure that reduces throttle body, device blocks assembly and the throttle body be made up of device blocks, bypass valve, actuator and throttle sensor or the like are made abreast, thereby can be boosted productivity.
Particularly, the upstream slot part, downstream slot part, valve chamber inlet hole and the valve chamber exit orifice that constitute the major component of bypass passageways can once moulding on the junction plane of device blocks, make and be very easy to, and, because it is parallel with the junction plane of device blocks that bypass valve becomes with actuator arrangement, the upstream slot part becomes adjacent to each other with bypass valve with actuator arrangement with the downstream slot part, can design the device blocks of thinner thickness, therefore, device blocks is protruded fewly from throttle body, can make whole suction means compact more.
Also have, if device blocks is unloaded down from throttle body, just can be easily to bypass passageways and bypass valve, and throttle sensor etc. keeps in repair.
In addition,, just can use same throttle body easily, the suction means of the motor of different size is provided, thereby can improve the mass-produced performance of throttle body by the bypass valve in the change device blocks and the specification of actuator.
In addition, outside the present invention's first feature, it second is characterised in that, on above-mentioned device blocks, form the valve pilot hole parallel with above-mentioned junction plane, the piston type bypass valve is inlaid in this valve pilot hole in the mode that can be free to slide, front end at above-mentioned bypass valve forms above-mentioned valve chamber, and under the installment state of the throttle body that bypass valve is arranged in for motor vehicle motor, the axis of bypass valve just has the gradient that makes progress a little towards actuator one side.
According to above-mentioned second feature, under throttle body is installed in state on the motor, because bypass valve and actuator only approach the very little gradient of level, so, even they are because of along with travelling of vehicle is subjected to up-down vibration, on the attachment portion of bypass valve and actuator, can not produce violent up-down vibration yet, avoid producing wearing and tearing, thereby can stablize the metrological performance of bypass valve owing to the vibration of this attachment portion.
And, because bypass valve and the formed gradient of actuator, be to allow actuator be in the top, so, in the operation process of motor, even mobile foreign matter such as oil in the waste gas of waste gas that leaks and backflow and moisture is invaded in the valve chamber of bypass passageways from air intake passage, these foreign matters can not rise to a side of stepper motor yet and go, therefore, can in advance with regard to prevent owing to this foreign matter freeze or pile up make actuator work malfunctioning.
Also have, outside second feature of the present invention, it the 3rd is characterised in that, has formed following part on bypass valve: in its end face upper shed, constitute the recess of the part of above-mentioned valve chamber; And, extending along the axial direction of above-mentioned bypass valve, the gap slot of metering usefulness so that when the low aperture of above-mentioned bypass valve, makes above-mentioned recess be communicated with above-mentioned valve chamber exit orifice.
According to above-mentioned the 3rd feature, in the low aperture scope of bypass valve, just can regulate the gettering quantity of bypass valve subtly by means of the opening area towards the valve chamber exit orifice of gap slot.
Also have, outside the of the present invention second or the 3rd feature, it the 4th is characterised in that, constitutes actuator with stepper motor, so as by screw mechanism the rotor of above-mentioned stepper motor and be flush-mounted in the above-mentioned valve pilot hole, in the bypass valve that can not rotate.
According to above-mentioned the 4th feature, when the rotation of the output shaft of stepper motor being slowed down, axial displacement is passed to bypass valve in the form of piston, thereby can regulate the aperture of bypass valve subtly with screw mechanism.
Description of drawings
Fig. 1 has the motor that an embodiment's of suction means of the present invention motorcycle uses to want the profile diagram of portion;
Fig. 2 is the side view that the part of the suction means of the motor among Fig. 1 is cut open;
Fig. 3 is the sectional view along the 3-3 line among Fig. 2;
Fig. 4 is the sectional view along the 4-4 line among Fig. 3;
Fig. 5 is the sectional view along the 5-5 line among Fig. 4;
Fig. 6 is the sectional view along the 6-6 line among Fig. 4;
Fig. 7 is the sectional view along the 7-7 line among Fig. 3;
Fig. 8 is the sectional view along the 8-8 line among Fig. 7;
Fig. 9 is the side view along the bypass valve of the arrow among Fig. 89.
Embodiment
Below, the one embodiment of the present of invention shown in illustrate and implement optimal way of the present invention with reference to the accompanying drawings.
At first, among Fig. 1, label E represents to be contained in the motor on the body of motor cycle, is connected the sucking pipe Ei on the cylinder Eh of this motor, and its upstream one side has the gradient θ that makes progress a little.Has the upstream extremity that is connected this sucking pipe Ei with the throttle body 1 of the air intake passage 2 of above-mentioned sucking pipe internal communication.Therefore, this throttle body 1 with state that sucking pipe Ei is connected under, its air intake passage 2 is also the same with sucking pipe Ei, is arranged to its upstream extremity and has the gradient θ that makes progress a little.The upstream extremity of air intake passage 2 is funnel-like, and the air-strainer (not shown) connects thereon.In addition, Fuelinjection nozzle I to the Aspirating valves burner oil is installed on cylinder Eh.
In Fig. 2 and Fig. 3, both sides at throttle body 1 intermediate portion, formed pair of projections 3,3 ', this a pair of boss has the axis hole 4,4 ' with the intersect vertical axis of air intake passage 2 respectively, be bearing on these two axis holes 4, the 4 ' valve shaft 6 that upward can freely rotate, fixing the bultterflythrottle 5 of switch air intake passage 2.One end of valve shaft 6 is being fixed closure drum 7, is connecting the operation steel cable 9 that links to each other with throttle operation parts (not shown) on the closure drum.At the other end of valve shaft 6, fixing the rotor 8a of the throttle sensor 8 of the aperture that detects closure 5.
In a side of throttle body 1, formed and become one with it, have close air intake passage 2 and with the housing 10 of the bottom surface 1a of its parallel axes.The boss 3 ' of above-mentioned opposite side protrudes on the 1a of the bottom surface of this housing 10, and the axis hole 4 ' of this boss 3 ' is arranged to and bottom surface 1a mutually orthogonal.The bottom surface 1a of housing 10 has become attachment face, and the junction plane 11a that is contained in the device blocks 11 in the housing 10 overlaps on this attachment face 10a, and device blocks 11 usefulness bolts 12 are fixed on the throttle body 1.In addition, on the face that opens wide of housing 10, fixing the cover plate that it is hermetic closed 13 with bolt 14.
Formed the boss 3 ' that holds above-mentioned opposite side and first receiving bore 37 of rotor 8a on device blocks 11, inductor coil 8b is installed on the inwall of this first receiving bore 37.This inductor coil 8b and rotor 8a collaborative work constitute with the electric throttle sensor 8 that the aperture of closure 5 is detected.
As Fig. 2～shown in Figure 6, from throttle body 1 until device blocks 11 has formed bypass passageways 15.This bypass passageways 15 is made of following each several part: pass throttle body 1, be communicated with the by-pass inlet hole 20 (referring to Fig. 4 and Fig. 5) of air intake passage 2 and above-mentioned attachment face 1a at the upstream end of closure 5; Pass throttle body 1, be communicated with the by-pass exit orifice 21 (referring to Fig. 4 and Fig. 6) of air intake passage 2 and above-mentioned attachment face 1a at the downstream part of closure 5; On the junction plane 11a of device blocks 11, form the upstream slot part 16 that the one end is connected with by-pass inlet hole 20; On the junction plane 11a of device blocks 11, form the downstream slot part 17 that the one end is connected with by-pass exit orifice 21 equally; Valve chamber inlet hole 23 at the bottom land opening of the downstream of upstream slot part 16; Valve chamber exit orifice 24 at the bottom land opening of the upstream extremity of downstream slot part 17; Be communicated with between these two valve chamber inlet holes 23 and the valve chamber exit orifice 24 valve chamber 22 in the cylindric valve pilot hole 19 that on throttle body 1, forms.Like this, bypass passageways 15 is just walked around closure 5, is connected on the air intake passage 2.
At this moment, by-pass inlet hole 20, by-pass exit orifice 21 and above-mentioned axis hole 4,4 ' are arranged to parallel to each other, so that once just these holes are processed with multispindle drilling machine.As shown in Figure 4, valve chamber exit orifice 24 is arranged in the top with respect to valve chamber inlet hole 23, and deflection by-pass inlet hole 20 these sides.Valve pilot hole 19 cylindraceous is arranged to and air intake passage 2 parallel and close upstream slot part 16 and downstream slot parts 17, and valve chamber 22 is arranged to and valve chamber inlet hole 23 and valve chamber exit orifice 24 overlap joints.Such valve pilot hole 19 owing to be arranged to parallelly with air intake passage 2, so be under the state that is communicated with the aspirating air pipe Ei of throttle body 1, just makes valve chamber 22 be in downside, has the less gradient θ (referring to Fig. 2) identical with air intake passage 2.
As Fig. 7～shown in Figure 8, the bypass valve 25 of piston type is inlaid in the valve pilot hole 19, can be free to slide, and in the valve pilot hole 19 in these bypass valve 25 front end the place aheads, forms above-mentioned valve chamber 22.In order to prevent that bypass valve 25 from rotating, be arranged on the inner peripheral surface of valve pilot hole 19, the key 42 of the protrusion that becomes one embeds in the keyway 41 on its excircle.
On bypass valve 25, be provided with at the end face opening of valve chamber 22 1 sides, constitute the recess 25a of the part of valve chamber 22, and this recess 25a is communicated with valve chamber exit orifice 24, measure the gap slot 26 of usefulness.In the scope of the low aperture of bypass valve 25, these gap slot 26 controls are finely tuned the bypass gettering quantity towards the opening area of valve chamber exit orifice 24; And in high aperture scope, then control the opening area of valve chamber exit orifice 24 towards valve chamber 22 with the end face of bypass valve 25, the bypass gettering quantity is compared significantly regulate.
Along above-mentioned gradient θ (referring to Fig. 2), the stepper motor 28 above bypass valve 25 is arranged to valve 25 coaxial lines therewith.The rotor 28a of stepper motor 28 is connected on the bypass valve 25 by screw mechanism 27.That is, on the core of bypass valve 25, the chimeric installation has screw 31, the workpiece 32 that can not rotate, and the thread spindle 30 that rotor 28a is combined into one is screwed in the screw 31 of this workpiece 32.The stator 28b of stepper motor 28 holds and is fixed on being connected in second receiving bore 38 on the valve pilot hole 19 of device blocks 11.
End at workpiece 32, formed and expanded part 32a on the end face of the above-mentioned recess 25a that is crimped on bypass valve 25, its the other end then combines with pressing plate 35, between above-mentioned pressing plate 35 and bypass valve 25, be provided with bypass valve 25 towards with the helical spring 45 of above-mentioned shoulder 32a crimping direction pushing.Like this, workpiece 32 just connects to an integral body with bypass valve 25.
Consult Fig. 4～Fig. 6 again, on the junction plane 11a of device blocks 11, also formed the seal groove 46 that surrounds upstream slot part 16 and downstream slot part 17, when the attachment face 1a that above-mentioned junction plane 11a is overlapped throttle body 1 goes up, just the sealed member 47 that closely is connected on this attachment face 1a has been contained on this seal groove 46.Like this, the face that opens wide of each slot part 16,17 just is sealed to airtight conditions by attachment face 1a.
Then, on the outside opposite of device blocks 11, offer third and fourth receiving bore 39,40 with above-mentioned junction plane 11a.The 4th receiving bore 40 is communicated with the downstream side of air intake passage 2 by the connectivity slot 50 of device blocks 11 and the throttle orifice 49 of throttle body 1.In addition, in the 3rd receiving bore 39, the inhalation temperature sensor 34 of the transducing part 34a in above-mentioned upstream slot part 16 has been installed, in the 4th receiving bore 40, has been installed and made the supercharging step-down sensor 33 of transducing part 33a towards connectivity slot 50.
By means of above-mentioned throttle sensor 8, supercharging step-down sensor 33 and inhalation temperature sensor 34, the detected throttle th of difference, supercharging step-down Pb and inhalation temperature Ta, and the information of the relevant engine running condition of detected engine temperature Te of cooling water temperature sensor or the like of the motor of expression not among the figure, all import in the electronic control part 36 that is connected on the above-mentioned stepper motor 28.
Like this, because bypass valve 25, stepper motor 28, inductor coil 8b, supercharging step-down sensor 33 and inhalation temperature sensor 34 all are installed in the device blocks 11, just constituted device blocks assembly parts 43.
Below, the effect of the foregoing description is described.
When closure 5 full cut-offs, electronic control part 36 is just according to the throttle th that is imported of above theory, supercharging step-down Pb and inhalation temperature Ta, the information of the relevant engine running condition of engine temperature Te or the like, when making bypass valve 25 obtain with engine start, during fast idle, during usual idle commentaries on classics, the corresponding best aperture of various engine running conditions during engine braking or the like, calculate the electric current that leads to stepper motor 28, and import above-mentioned electric current, rotor 28a is just changeed or reverse.When rotor 28a is just changeing or is reversing, by means of screw mechanism 27 its rotating speed is slowed down, give piston type bypass valve 25 transmission of movement simultaneously, make it carry out axial displacement, so just can carry out meticulous adjusting to the aperture of bypass valve 25.
Like this, when occupying high aperture position when bypass valve 25 dependence stepper motors 28, because the end face of bypass valve 25 is towards valve chamber exit orifice 24, flow through bypass passageways 15 and suck in-engine gettering quantity, that just controls than the opening area of the valve chamber 22 that flows to valve chamber exit orifice 24 is many, thereby can be corresponding with the startup running or the fast idle running of motor.In addition, when bypass valve 25 hangs down the aperture position owing to valve chamber 22 occupies, because the gap slot 26 of bypass valve 25 is towards valve chamber exit orifice 24, so flow through the gettering quantity of bypass passageways 15, just can control than the lacking of the opening area of the valve chamber exit orifice 24 that flows to gap slot 26 subtly, thus can be corresponding with the running and the engine braking of the usual idle commentaries on classics of motor.
If opening throttle 5, so just pass through air intake passage 2 to the corresponding gettering quantity of the aperture of motor supply and closure, the operating range of exerting oneself is transferred in the running of motor.
In this suction means, owing to be installed on the housing 10 that becomes one with throttle body 1, and bypass valve 25, stepper motor 28, inductor coil 8b, supercharging step-down sensor 23 and inhalation temperature sensor 34 be installed on the demountable device blocks 11, constituted device blocks assembly 43, so, in the manufacturing procedure that reduces throttle body 1, device blocks assembly 43 and throttle body 1 are made abreast, thereby can be boosted productivity.And, device blocks 11 is disassembled from throttle body 1, just can be easily to bypass passageways 15 and bypass valve 25, and throttle sensor 8 etc. keeps in repair.In addition, specification by the bypass valve 25 on the change device blocks 11, stepper motor 28, various sensor 8,33,34, use just can provide the suction means of the different motor of specification simply with a kind of throttle body 1, thereby can improve the mass-produced performance of throttle body 1.In addition,, not only enlarged its degrees of freedom aspect design arrangement, and can also improve its productivity, reduced its cost because this suction means has the performance of extensive use.
In addition, constitute the upstream slot part 16 of the major component of bypass passageways 15, downstream slot part 17, valve chamber inlet hole 23 and valve chamber exit orifice 24, only just can on the junction plane 11a of device blocks 11, form with a molding, be very easy to so make, and, because be communicated with the valve pilot hole 19 between valve chamber inlet hole 23 and valve chamber exit orifice 24, be arranged to parallel with the junction plane 11a of device blocks 11, so upstream slot part 16, downstream slot part 17 and valve pilot hole 19 are arranged very approachingly mutually, can form the relatively thinner device blocks of thickness, thereby the protrusion of device blocks 11 on throttle body 1 is just fewer, can make whole suction means compactness more.
In addition, under the state that throttle body 1 is installed on the motorcycle engine E, the bypass valve 25 and the stepper motor 28 that couple together by screw mechanism 27 approach level, has only very little gradient θ, so, even be subjected to up-down vibration along with travelling of vehicle, on the attachment portion of bypass valve 25 and stepper motor 28, be on the screw mechanism 27, can not produce violent up-down vibration yet, avoid screw mechanism 27 owing to vibration produces wearing and tearing, thereby can stablize the metrological performance of bypass valve 25.
In addition, because the gradient θ that bypass valve 25 and stepper motor 28 are had, stepper motor 28 is raised upward and formed, so, in the operation process of motor, even mobile foreign matter such as oil in the waste gas of waste gas that leaks and backflow and moisture is invaded in the valve chamber 22 of bypass passageways 15 from air intake passage 2, these foreign matters can not rise to a side of stepper motor 28 yet and go, therefore, can in advance with regard to preventing because the freezing or pile up that stepper motor 28 is worked is malfunctioning of this foreign matter.
The present invention is not limited only to above-described embodiment, and in the scope that does not break away from its inventive concept, its design can have various variations.
Claims (4)
1. the suction means of a motor, it is connected the bypass passageways (15) of walking around closure (5) on the air intake passage that is provided with closure (5) (2) of throttle body (1), and the actuator of switch drive bypass valve (25) (28) is connected on the bypass valve (25) of switch bypass passageways (15), it is characterized in that
The junction plane of device blocks (11) (11a) is incorporated on the attachment face (1a) of and parallel axes air intake passage (2) that go up to form at throttle body (1); Bypass passageways (15) is made of following each several part: be arranged to pass throttle body (1), the bypass passageways inlet hole 20 that is communicated with between the air intake passage (2) of closure (5) upstream and the above-mentioned attachment face (1a)); Be arranged to pass throttle body (1), the bypass passageways exit orifice (21) that is communicated with between the air intake passage (2) in closure (5) downstream and the above-mentioned attachment face (1a); Go up to form at above-mentioned junction plane (11a), be connected with above-mentioned bypass passageways inlet hole (20), and the upstream slot part (16) that open surface is closed with above-mentioned attachment face (1a); Go up to form at above-mentioned junction plane (11a), be connected with above-mentioned bypass passageways exit orifice (21), and the downstream slot part (17) that open surface is closed with above-mentioned attachment face (1a); Valve chamber inlet hole (23) in the bottom land upper shed of the downstream end of above-mentioned upstream slot part (16); Valve chamber exit orifice (24) in the bottom land upper shed of the end, upstream of above-mentioned downstream slot part (17); And be arranged on the above-mentioned device blocks (11), so that be communicated with the valve chamber (22) of above-mentioned valve chamber inlet hole (23) and valve chamber exit orifice (24); In addition, also, make it parallel with above-mentioned junction plane (11a) being arranged on the device blocks (11) facing to the bypass valve (25) of above-mentioned valve chamber (22) and the actuator (28) of this bypass valve of switch; In addition, on above-mentioned device blocks (11), also be provided with the throttle sensor (8) of the aperture that detects above-mentioned closure (5).
2. engine air-suction apparatus as claimed in claim 1 is characterized in that,
Go up the formation valve pilot hole (19) parallel in above-mentioned device blocks (11) with above-mentioned junction plane (11a), piston type bypass valve (25) is inlaid in this valve pilot hole (19) in the mode that can be free to slide, front end at above-mentioned bypass valve (25) forms above-mentioned valve chamber (22), under the installment state of the throttle body (1) that bypass valve (25) is arranged in for motor vehicle motor (E), the axis of bypass valve (25) just has the gradient (θ) that makes progress a little towards actuator (28) one sides.
3. engine air-suction apparatus as claimed in claim 2 is characterized in that,
On bypass valve (25), formed following part: in its end face upper shed, constitute the recess (25a) of the part of above-mentioned valve chamber (22); And, extending along the axial direction of above-mentioned bypass valve (25), the gap slot (26) of metering usefulness so that when the low aperture of above-mentioned bypass valve (25), makes above-mentioned recess (25a) be communicated with above-mentioned valve chamber exit orifice (24).
4. as claim 2 or 3 described engine air-suction apparatus, it is characterized in that,
Constitute actuator with stepper motor (28), so as by screw mechanism (27) the rotor of above-mentioned stepper motor (28a) and be flush-mounted in the above-mentioned valve pilot hole (19), in the bypass valve that can not rotate (25).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP132575/2001 | 2001-04-27 | ||
| JP2001132575 | 2001-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1505732A true CN1505732A (en) | 2004-06-16 |
| CN1297736C CN1297736C (en) | 2007-01-31 |
Family
ID=18980568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028089537A Expired - Fee Related CN1297736C (en) | 2001-04-27 | 2002-04-19 | Engine intake device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1384874B1 (en) |
| CN (1) | CN1297736C (en) |
| DE (1) | DE60238525D1 (en) |
| ES (1) | ES2355359T3 (en) |
| TW (1) | TW575712B (en) |
| WO (1) | WO2002097254A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678341A (en) * | 2011-12-25 | 2012-09-19 | 河南科技大学 | Gas inlet brake |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2005095774A1 (en) * | 2004-03-31 | 2005-10-13 | Keihin Corporation | Idle air control device of fuel injection device |
| JP4459154B2 (en) * | 2005-11-09 | 2010-04-28 | 株式会社ケーヒン | Air bypass device for multiple throttle bodies |
| TWI403640B (en) * | 2011-04-14 | 2013-08-01 | Sanyang Industry Co Ltd | Can identify the action of the intake control mechanism |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60157947U (en) * | 1984-03-29 | 1985-10-21 | 日本電子機器株式会社 | Internal combustion engine idle speed control valve |
| JPH0645654Y2 (en) * | 1986-01-17 | 1994-11-24 | マツダ株式会社 | Engine intake system |
| JPS63136236A (en) * | 1986-11-28 | 1988-06-08 | Toshiba Corp | Switching device debugging |
| JPH0631179Y2 (en) * | 1987-02-26 | 1994-08-22 | 三菱電機株式会社 | Engine intake air amount control device |
| FR2718490B1 (en) * | 1994-04-06 | 1996-07-05 | Solex | Two-stage valve for supplying air to internal combustion engine injectors. |
| US5711271A (en) * | 1995-05-05 | 1998-01-27 | Robert Bosch Gmbh | Throttle apparatus for an internal combustion engine |
| JPH10299624A (en) * | 1997-04-22 | 1998-11-10 | Hitachi Ltd | Device for controlling number of idling revolutions of internal combustion engine |
| JPH11280526A (en) * | 1998-03-25 | 1999-10-12 | Keihin Corp | Idle air amount control device |
-
2002
- 2002-04-19 WO PCT/JP2002/003948 patent/WO2002097254A1/en active Application Filing
- 2002-04-19 ES ES02720533T patent/ES2355359T3/en not_active Expired - Lifetime
- 2002-04-19 EP EP02720533A patent/EP1384874B1/en not_active Expired - Fee Related
- 2002-04-19 DE DE60238525T patent/DE60238525D1/en not_active Expired - Lifetime
- 2002-04-19 CN CNB028089537A patent/CN1297736C/en not_active Expired - Fee Related
- 2002-04-26 TW TW91108740A patent/TW575712B/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678341A (en) * | 2011-12-25 | 2012-09-19 | 河南科技大学 | Gas inlet brake |
| CN102678341B (en) * | 2011-12-25 | 2014-08-27 | 河南科技大学 | Gas inlet brake |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1384874B1 (en) | 2010-12-08 |
| EP1384874A1 (en) | 2004-01-28 |
| TW575712B (en) | 2004-02-11 |
| DE60238525D1 (en) | 2011-01-20 |
| ES2355359T3 (en) | 2011-03-25 |
| EP1384874A4 (en) | 2009-03-11 |
| WO2002097254A1 (en) | 2002-12-05 |
| CN1297736C (en) | 2007-01-31 |
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Granted publication date: 20070131 Termination date: 20170419 |