TW536579B - Intake air-amount control system for engine - Google Patents

Abstract

In an intake air-amount control system for an engine, a coupler (80) is integrally formed on a control block (28) coupled to a throttle body (17), and a bypass valve (35), a sensor (64, 73, 76) and an actuator (39) are mounted in the control block (28). An electronic control unit (84), is placed on an outer end face of the control block (28), and a synthetic resin (103) is potted into a cap (101) mounted to the control block (28) to cover the electronic control unit (84), so that the electronic control unit (84) is wrapped, and a mounted portion of the cap (101) is sealed. Thus, the inspection of the functions of the bypass control devices can be carried out before assembling of them to the throttle body, leading to an enhancement in productivity.

Description

536579 A7 p______B7_ V. Description of the Invention (Technical Field) [Technical Field] The present invention relates to an improvement of an engine's air intake control device, which includes: an air passage arrangement for connecting with an air intake of an engine Throttling body provided with a throttle valve; moving back to the bypass bypassing the throttle valve and connected to the suction duct; a bypass valve for detecting the opening degree of the bypass and a sensor for operating the engine; and An actuator for driving a bypass valve switch in response to a sensor output signal. [Knowledge Background] The intake amount control device of such an engine is disclosed in, for example, Japanese Patent Laid-Open Publication No. 9-303164, and is well known. In the conventional air intake control device of such an engine, since the bypass control system of the bypass valve, the actuator, and the sensor is not assembled in the throttle body, the bypass control system cannot be completed, so The functional inspection of the bypass control system must be performed after the entire assembly of the device is completed. If the inspection is not compatible, the bypass valve, actuator, and sensor must be removed from the throttle body, and Check again after replacing with other parts. Such a troublesome operation becomes an obstacle in pursuit of improving productivity. [Disclosure of the invention]-Shuming was created in view of this situation, and its purpose is to provide a function check of the bypass control system that can be implemented before being assembled in the throttle body, thus improving the aforementioned engine. Inspiratory volume control device. In order to achieve the above object, the present invention is an engine's air intake control device = 3, which is used to configure the instant flow main body of the throttle channel connected to the air intake hole of the engine; bypass the throttle valve and connect to Bypass of the airway; (CNS) A4 ^ (210X297 ^ ---

(Please read the precautions on the back before filling this page} 、 一 -T 丨 _ -4- 536579 A7 " " " " " '--------_________ 5. Description of the invention (2 ) " 1 ^ — a bypass valve and a sensor for detecting the operating state of the bypass valve used to control the opening of the bypass; and an actuator for driving the bypass switch in response to the output signal of the sensor The device is characterized in that a coupling unit combined with an external coupling unit is formed in the control zone-body connected to the throttle body, and a bypass valve, a sensor, and an actuator are simultaneously installed in the control zone. The outer end surface is provided with an electronic control unit for electrically connecting each of the actuator, the sensor and the coupler, and a synthetic resin is wound into a cover which can be installed in the control area to cover the electronic control unit. According to the first feature, as long as the bypass valve, the sensor and the actuator are installed in the control area and separated from the throttle body, the power supply is properly connected to the control area by properly connecting the power supply to the control area. Integrated coupler for actuators and bypass valves, sensors, Since the sub-control unit is inspected for function, only the inspector appropriate to it is installed on the throttling body, so it will not be futile to assemble the work, which can help improve productivity. Q Also, by pouring resin in the cover, It can protect the electronic control unit from rain, dust, and vibration, especially by sealing the cover to the installation area of the control area, which can effectively prevent water and dust, and can use the cover to make the appearance of the control area good. The next force can strengthen the bonding force between the cover and the control area. In addition, the second feature of the present invention is that in addition to the first feature, the electronic control area is housed inside the cover and the cover sleeve is embedded outside the control area. End, with the cover facing down, and in the cover, synthetic resin is poured to the vicinity of its upper end. According to the second feature, the resin can be efficiently carried out with the minimum required pouring resin. This paper applies the Zhongguan standard (CNS) ) A4 specification (21GX297 public love) * ---

、 町 丨 (Please read the precautions on the back before filling in this page} 536579 A7 ———----— B7 —_ V. Description of the invention () " I --- # 言 蒦 与 盖 of electronic control unit Further, the third feature of the present invention is that, in addition to the second feature, a washing and filling port of synthetic resin is provided at a portion close to the cover in the control area. According to the third feature, it is possible to wash and fill from the side. Watch the pouring state of the synthetic resin washing and pouring into the cover, and easily adjust its pouring amount. Furthermore, the fourth feature of the present invention is that in addition to the third feature, the terminal system of the sensor is covered with synthetic resin. The substrate of the resin electronic control unit is directly connected. According to the fourth feature, the connection portion of the sensor-encapsulated substrate to the substrate of the electronic control unit is covered with the resin to improve the shock resistance of the connection portion. The fifth feature of the present invention is that the lid is made of an A1 alloy plate except for any of the first to fourth features. According to the fifth feature, the A1 alloy plate is used as a material, and a cover with a good appearance can be easily stamped and formed. By the following description of the most suitable embodiment detailed in the attached figure, The foregoing and other objects, features, and advantages of the present invention are more clear and clear. [Simplified description of the drawings] FIG. 1 is a side view of an automatic two-bucket car including the air intake control device of the present invention. &Quot; " Fig. 2 is an enlarged cross-sectional view of part 2 of Fig. 1. Fig. 3 is a cross-sectional view taken along line 3-3 of Fig. 2. Fig. 4 is an exploded perspective view of the control device for inhalation 1. Fig. 5 It is the side view of the same air intake control device. Figure 6 is the figure viewed by arrow 6 in Figure 5. This paper size applies to Chinese national standards (CNS> A4 specification (210X297 mm) (Please read the back Please fill in this page again), one-T— -6-36536579 Five pictures of the view of the place 7 8 heads before the previous picture Figure 5 7 The first reason is Figure 7 8 The first A7 B7 Explanation of the invention Fig. 9 is a sectional view taken along line 9-9 of Fig. 7. Fig. 10 is a sectional view taken along line 10-10 of Fig. 5. Fig. 11 is a sectional view taken along line li-ii of Fig. 5. Fig. 12 is a cross-sectional view taken along line 12-12 of Fig. 5. Fig. 13 is an enlarged view of the bypass valve peripheral part of Fig. 12. Fig. 14 is a cross-section taken along line 14-14 of Fig. 5. Fig. 15 is an enlarged cross-sectional view taken along line 15-15 of Fig. 13. Fig. 16A is a side view seen from the metering groove of the bypass valve. Fig. 16B is seen from the keyway of the bypass valve. Side view. Figure 17 is an enlarged cross-sectional view of the π portion of Figure 12. [Embodiments of the invention] Hereinafter, embodiments of the present invention will be described with additional illustrations. First, in Figures 1 to 3, The two-wheeled motor vehicle 1 includes a power unit 4 which is arranged directly below the long storage box 3 that doubles as a front and rear seat 2 to constitute a speed maker. The power unit 4 includes: An engine 5 with a cylinder block 6 leaning forward; and a stepless transmission 8 integrally connected to a rearwardly extending gearbox on the side of the crankcase 9 of the engine 5, and the rear wheel 16 as a driving wheel is driven by the gearbox Rear end is supported by a shaft. In the main body frame 11 of the two-wheeled motor vehicle 1, the upper and lower frames 11a and 11a supporting the left and right pair of the storage box 3 and the left and right pair of lower pipes 1 lb and 1 lb extended from the main pipe are directed upward and rearward. Connection section with upper bracket (Please read the precautions on the back before filling this page}

536579 5. Description of the invention (12,! 2. In addition, a pair of left and right lower brackets 13, 13 are formed on the crank case 9 of the engine 5, and the upper brackets 12, 12 are supported at both ends by using The middle part of its swingable crank-shaped engine hanger 14 supports the lower brackets 13 and 13 and makes it swingable. In this way, the power unit 4 is supported by the body «U and can swing up and down, and is mounted on the rear frame _, A reaction unit 26 is installed between η and the gearbox 10 to cushion its up-and-down shaking. The cylinder head 7 connected to the front end of the cylinder block 6 is formed with an intake hole 7a for opening the upstream end toward the rear of the vehicle body, and The throttle body 17 connecting the air intake passage 17a to the air intake hole 7a is attached to the cylinder head 7 via the connecting pipe 15. At this time, the throttle body 17 is arranged between the storage box 3 and the engine 5, and sucks The air passage 17a extends in the front-back direction and is slightly horizontal (in the example shown, it is slightly forward). Therefore, the throttle body 17 is a horizontal type. The rear end of the throttle body 经由 passes through the upper part of the engine hanger 14 Suction duct 18 Air cleaner 19. The receiver is installed on the cylinder head 7 to The fuel injection valve 20 that injects fuel at the downstream end of the injection and suction hole 7a. Next, the intake amount control device of the present invention including the aforementioned throttle body 17 will be described in detail. As shown in FIGS. 4 to 8, A butterfly-type throttle valve 21 for opening and closing the throttle body 17 is provided, and a valve shaft 22 supporting the throttle valve is horizontally strung across the suction channel 17a and supported. The left and right side walls of the throttle body 17 are rotatable. A throttle bobbin 23 is fixed to an end of the valve shaft 22 protruding from one side of the throttle body 17, and a single throttle cable is connected thereto. Line 24 and used to give the throttle valve 2 丨 the tendency to close (please read the precautions on the back before filling this page), τ. 536579 A7 B7 V. Description of the invention () ~ " —-6 The spring 25 is moved, and the throttle cable 24 is pulled by a throttle operation member not shown in the figure to open the throttle valve 21. An outer wall of the throttle body 17 protruding from the other end of the valve shaft 22 is integrally formed A connecting flange parallel to the suction channel 17a and perpendicularly intersecting the valve shaft 22, and a plurality of bolts are connected to the connecting flange 27 29, 29 ... The synthetic resin control area 28 formed separately from the throttle body 17 is detachably joined. Between these throttle bodies Π and the control area 28, a bypass is formed to bypass the throttle valve 21 and connect Bypass 30 in the suction path na. As shown in Figs. 4, 9 and 13, the bypass 30 has a bypass inlet 31i, which is connected to the suction path from the throttle valve 21. From the upstream side of 17 & to the joint surface of the connecting flange 27 and passing through the throttle body 17; the bypass outlet 31 is connected from the downstream side of the suction channel 17 & from the throttle valve 21 to the aforementioned connecting protrusion The joint surface of the edge 27 passes through the throttle body 17; the bypass upstream groove 32i is formed on the joint surface of the aforementioned connection flange 27 and one end is connected to the bypass inlet 31i, and the bypass downstream groove 32o is formed on The connecting surface of the aforementioned connection flange 27 and one end is connected to the bypass outlet 31o; the valve hole inlet 33i is formed in the control area 28 and is connected to the other end of the bypass upstream groove 32i; the valve hole outlet 33o is Formed in the control area 28 and connected to the other end of the bypass downstream groove 32; and a bottomed cylinder-shaped valve hole 34, tied to The control area 28 is formed in parallel with the suction channel 17a and can communicate between the valve hole inlet 33i and the valve hole outlet 33o. At this time, the valve hole 34 is disposed above the bypass inlet 31m and the bypass outlet 31o, and the valve hole inlet 33i and the valve hole outlet 33o are opened below the valve hole 34. In Figure 12 and Figure 13, the valve hole 34 is embedded to control the valve. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) Order — -9- 536579 A7, description of the invention B7 The freely sliding activated earth-like bypass valve 35 with a communication amount between the 7-hole inlet 33i and the valve hole outlet 330, and the bypass valve 35 is connected by Euclidean The device 50 is connected to a driving member 37 that can be driven in the axial direction and can be displaced in the radial direction. The driving member 37 is connected to a wheel output shaft 39a of the stepping motor 39 via a screw mechanism 40. That is, 3% of the output shaft forming the screw shaft is screwed with the screw hole 41 of the driving member 37, and the driving member 37 can be advanced and retreated in the axial direction by the rotation of the output shaft 39a, and the same can be achieved through the Euclidean connector 50. The bypass valve 35 is advanced. ,. The stepping motor 39 is inserted with an actuator washer 42 provided coaxially with the valve hole 34 and opening on one side of the control area 28, and a sealing member 43 is placed in the middle of the opening of the actuator washer core by screwing. Keep it plugged. As shown in FIGS. 16A and 16B, the bypass valve 35 is provided with a deep cylindrical bottomed hollow portion 45 opening toward the bottom of the valve hole 34, and a notch shape for communicating the inside and outside of the bottomed hollow portion 45. The key groove 47 and the metering groove 48 are engaged with a key 49 erected from the bottom of the valve hole 34 in the key groove 47 to prevent the bypass valve 35 from rotating while allowing the slide of the bypass valve 35. The metering groove material is arranged corresponding to the valve hole outlet 33. It has a wide portion 48a with a fixed groove width and extending in the axial direction of the bypass valve 35, and is connected to one end thereof and moves away from the wide portion 48a. Then, the tapered portion 48b having a smaller groove width decreases. As shown in FIG. 13 and FIG. 15, the above-mentioned Euclidean connector 50 has an i-th angle hole 51 provided in the bypass valve 35 and adjacent to the bottomed hollow portion 45; and is fitted in the first The corner hole 51 can be slid in the horizontal direction of the joint member 53, and the joint member 53 is provided on the joint member 53 and is fitted with the national paper standard (CNS) Α4 (2WX297) %)

(Please read the precautions on the back before filling this page) Thread, -10-536579 Five invention descriptions The second drive hole that slides to the second transverse γ that makes a right angle to X "The second corner hole 52 A long flange 37a is formed at one end to penetrate the joint member 53 and is in contact with one end face of the joint member ^ and the bypass valve ^. In addition, the other end of the joint member 53 is formed with a A small flange 37b in the bottom hollow portion 45 is provided between the small flange 3% and the bypass 阙 35 in a compressed manner to provide a holding spring 54 for giving the 阙 35 potential energy toward the large flange 37a side. Therefore, the bypass valve ㈣ is elastically held in the axial direction by the large flange 37 a and the holding elastic 54 on the driving member 37, and the axial surfaces of the bypass valve 35 pass through the first corner hole Η and the second The corner hole 52 communicates with the sliding gap between the valve 35 and the valve hole 34. The joint member 53 faces the section 胄 35a of the corner hole 51 and the large flange 37 & of the driving member 37 by the bypass valve 35. Is held in the axial direction. It can be clearly seen from Figure 9, Figure 13 and Figure 14 that it is parallel to the suction channel m and coaxial. The bypass valve 35 and the stepping motor 39 are arranged above the valve shaft 22 horizontally disposed on the throttle valve 21. Further, the bypass valve 35 is disposed toward the upstream side of the intake passage 17a, and stepping The motor% is disposed downstream of the intake path 17a, so that the bypass downstream groove 32 is formed longer than the bypass upstream groove 32i. Therefore, the bypass hole 35 is arranged in the bypass valve 35 in parallel with the intake channel 17a by the valve hole 34. It can make the intake volume control device compact. In addition, the stepping motor 39 and the bypass valve 35 can be arranged in a well-balanced manner above the throttle shaft 22, which also helps the intake volume control device to be tighter. In Figures 12 and 13, the actuator washer 42 is formed to be more coaxial than the standard paper size. It is applicable to China National Standard (CNS) A4 (210X297 mm).

Yes, (Please read the precautions on the back before filling this page) -11- 9 536579 V. Description of the invention The diameter of the valve hole 34 juxtaposed in front forms a large circle to form a ring segment 55. The ring-shaped section 55 is installed between the side of the lead-in motor W of the lead-in hole = and holds the seal member core; the seal member 57 is installed at the same time as the stepping motor 39 is mounted on the actuator washer 42. It is fastened to the front end surface and the ring segment is easy to install. The sealing member 57 is fixed at a fixed position between 5 and 5. The sealing member 57 is composed of a ring-shaped synthetic resin-made reinforcing plate 58 and a rubber elastic covering material ^ that is shapedly coupled to the reinforcing plate 58 to cover it. A pair of front and rear side openings 60, 60 'are formed on the outer peripheral portion of the elastic covering material 59, and an inner peripheral opening M is formed on the inner peripheral surface, and the side openings 60 and 60 are in close contact with the aforementioned annular section, respectively. 55 and the front end face of the stepping motor μ, and the inner peripheral opening 61 is in close contact with the outer peripheral surface of the root of the output shaft 3. Because the side openings σ 60, 60 and the inner opening 61 are maintained in a proper sealing posture by the reinforcing plate 58, a good sealing function can be always exerted. The reinforcing plate 58 is provided with a plurality of fixing holes 62 and is filled with an elastic covering material 59 to further improve the bonding force between the reinforcing plate 58 and the elastic covering material 59. The reinforcing plate 5 8 is made of a synthetic resin, so that the sealing member 5 7 can be made lighter. In Figs. 5, 10 and π, a control section 28 is provided with a flu-saving detector 64 for detecting the opening degree of the throttle valve 21. This throttle reduction device 64 is provided with a box 66 fitted to a mounting recess 65 formed on the outer side surface of the control area 28; a rotator connected to the end of the valve shaft 22 of the throttle valve 21 in the box 66 67; and a holder 68 fixed to the box 66 and used to detect the rotation angle of the rotator 67 as a throttle opening 21 degree. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -12- 536579 A7 — __________B7_ V. Description of the invention () 10 (Please read the notes on the back before filling this page) As shown in FIG. 9 and FIG. 14, in one side of the mounting recess 65 of the influenza detection device 64, the throttle body 17 and the control area 28 are provided to intersect the connecting flange 27 perpendicularly and open in the air intake duct i7a The first sensor mounting hole 71 on the upstream side is provided with an inhalation temperature sensor 73 for detecting the temperature upstream of the air intake channel 17a from the control area 28 side. In addition, a rising negative pressure detection hole 74 is formed in the throttle body 17 and is opened on the downstream side of the suction channel 17a. A second sensor is formed in the control area 28 directly above the first sensor mounting hole 71. The mounting hole 72 is formed on the joint surface of the connecting flange 27 as a curved groove that bypasses the lower portion of the flu tester 64 and communicates with these raised negative pressure detection holes 74 and the second sensor mounting hole. 72 of the connecting road 75. In addition, the second sensor mounting hole 72 is installed to detect the negative suction pressure on the downstream side of the suction path i7a through the rising negative pressure detection hole 74, that is, to detect the rising negative pressure of the engine 5 Pressure sensor 76. In this way, the air intake temperature sensor 73 and the elevated negative pressure sensor 76 are arranged close to each other. The bypass inlet 31i, which is the upstream end of the bypass 30, is arranged near the mounting hole 71 in the suction channel 17a on the upstream side from the first sensor mounting hole 71 described above. The bypass downstream groove 32o is configured to bypass the lower portion of the influenza sensor 64 with respect to the communication path 75, and is configured to relocate to bypass the upper portion of the throttle sensor 64. In Figs. 4 to 8 and 14, the upper and lower flat couplings 80 are provided above the control area 28. The coupling 80 is composed of a connection body 81 integrally formed in the control S 28 and a plurality of connection numbers μ embedded therein. The connection body 8 1 extends beyond the connection flange 2 7 until the size of the paper is suitable. S Family Standard (CNS) A4 Specification (210X297 mm) '~ -13- V. Description of the Invention (11) Directly above the flow body η, and make the joint 80a face the direction opposite to the control area 28. An external connector µ is connected to the coupling port 80a, and the external connector 83 is connected to a wire harness% connected to a power source or the like. The control area 28 to which the above-mentioned coupling 80 is attached is formed in a box shape with an outer end surface opposite to the aforementioned connection flange ^ 7, and a substrate 84a of an electronic control unit 84 is provided on the outer end surface. At this time, the connection terminal 64a of the aforementioned air temperature sensor 73, the negative pressure sensor% and the flu-saving sensor 64 is directly connected to the substrate 82 by being bluntly soldered to the connector 82 of the connector 80. End (refer to Figure 10 to Figure 12). The reference numeral 85 is used to show various semiconductor parts attached to the substrate 84a. In the horizontal throttle body 7, even if foreign matter such as fuel oil droplets intrudes from the intake airway 17 a due to the suction blowback phenomenon of the engine 5, the intrusion of the negative pressure detection hole 74 from the intake airway 17 a, A large gap is given between the hole 74 and the elevated negative pressure sensor 76 located above it by a communication path 75, and the communication path 75 forms a curved path with a large pipeline resistance, so the foreign object cannot climb to increase the negative pressure sensing The device 76 can therefore protect the negative pressure sensor 76 from foreign objects and ensure its function and durability. In addition, since an air temperature sensor 73 and a negative pressure sensor 76 are arranged on one side of the flu-saving detector 64, they can be connected to the electronic control unit 84 in a centralized manner to make the unit 84 compact. Into. Furthermore, since the grooves for the communication path 75 and the bypass upstream grooves and downstream grooves 32i and 32o which are the main parts of the bypass 30 are formed on the joint surfaces of the connecting flanges 27 of the throttle body 17, It can be formed at the same time as the throttle body 17 is formed, and no special processing is needed to form the grooves, so that the size of the raw paper can be adapted to the Chinese National Standard (CNS) A4 (210X297). -14- 536579 A7 ___ B7_ V. Description of the invention () 12 Productivity is improved. Furthermore, the bypass inlet 3 1 i is arranged on the intake duct 17 a on the upstream side of the first sensor mounting hole 71 below the second sensor mounting hole 72 and is close to the mounting hole 71. The first sensor mounting hole 7 i, the second sensor mounting hole 72 and the bypass inlet 3 li are arranged in a centralized manner without interfering with each other, which contributes to the compactness of the control area 28. Furthermore, the 'bypass downstream groove 32o' and the communication path 75 are arranged so as to surround the influenza tester 64 from top to bottom, whereby the bypass downstream groove 32o and the communication path 75 can be tightly arranged around the influenza tester 64. Not interfering with each other, it is more helpful for compacting the control area 28. Also, in the fourth figure, on the outer end surface of the control area 28 with the coupling 80, positioning protrusions 87 are formed on one diagonal portion of one diagonal line, and on the other diagonal line. A corner hole is formed with a screw hole 88. In addition, a positioning hole 89 'corresponding to the positioning protrusion 87 and a small screw hole 90 corresponding to the screw hole 88 are provided on the substrate 84a. The positioning holes 89 are loosely coupled to the positioning protrusions 87, and the small screws 9j inserted into the small screw holes are screwed into the screw holes 88, whereby the substrate 84a can be fixed to a predetermined position of the control area 28. Also, as shown in Fig. 12 and Fig. 17, between the stepping motor 39 in the control area 28 and the substrate 84a, a slightly rectangular synthetic resin-positioned connecting piece 92 is positioned and fixed. A plurality of guide frames 93 and 93 are embedded in the connecting piece 92, and a connection terminal 93a formed at the end of each guide frame 93 is directly connected to the substrate 84a by welding. A connection hole 94 is formed at the other end of each guide frame 93 . On the other hand, the paper size is applied by the terminal protrudingly provided on the outer end surface of the stepping motor 39. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297). -15- (Please read the precautions on the back before filling This page) 订 · 13 13 Five inventions explain the front end face of the output portion 95 (the direction of the total w actuator front 42 on the front side of the Huai 96 direction ... is formed in step 6 .., these connecting pins 96, the aforementioned connection Hole 94 = Simultaneous embedding of the actuator rim 42 in the pressure-resisting Hi ㈣ single ⑽ 'system is based on the exception of the flu tester 64, raised negative L :, and temperature sensor 73, as well as those not shown in the figure: The output signals of the sensor and the engine temperature sensor are controlled by: up to 3U fuel injection room and there is an ignition device (not shown in the figure) and so on. The δ is connected to the external coupler 83. As shown in Fig. 4 and Fig. 9, right field is formed on the joint surface of the connection flange 27 to surround the bypass upstream groove 32i, the bypass downstream groove 32o, and the sensor. Device, hole 71, two negative pressure detection holes 74 and communication channel 75 are sealed around and are mounted thereon with a tightness to the control area 28 The sealing member 98 can keep the above-mentioned bypass upstream groove 32i, bypass downstream groove 32, and the like airtight. As shown in FIG. 4, FIG. 1 and FIG. 12, the coupling 8 is formed. On the step-shaped mating surface 100 of the outer periphery of the control region 28 of 〇, an A1 alloy plate cover 10 for receiving the electronic control unit 84 is fitted. At this time, it is formed on these mating surfaces. The engaging protrusion 105 and the engaging hole 106 (refer to FIG. 4 and FIG. 11) are elastically engaged. The cover 101 is formed by pressing eight alloy plates and forming them, and can be provided without wrinkles. Good appearance. Therefore, because the cover 101 can make the appearance of the control area 28 good, it is very effective for the two-wheeled vehicle J to expose the control area 28 to the outside. The control area 28 is provided with a watering port 1〇 2. It is close to the cover size of the paper format of 010, which is applicable to Chinese National Standard (CNS) A4 (210X297 mm) -16- 536579 A7

The above-mentioned distributed configuration of various sensors 64, 73, 76 and electronic control unit 84 sheets are suitable for financial country specifications (210X297, public relocation, 536579, invention description 15 and coupler 80 'even in the narrow space of the two-wheeled vehicle). Configuration of the other two bodies :: flattened below the four sides, so even if it is placed on the throttling basis; ^ can be placed on the bottom of the storage box 3 above = 7 above, but also several storage boxes 3 The volume is enlarged. The square moves, so that the second device 83 can be connected to the coupler 8. The connection is not hindered by the electronic control unit two = 5, and the assembly and maintenance are good. It also extends to the left and right valve shaft 22 and Opposite side of the electronic control unit 84 = A throttling bobbin 23 is fixed, and the machine cable 24 connected to the throttling bobbin 23 is arranged below the joint of the coupling rib (refer to Section 8). Figure). By doing so, "throttling cables" can be prevented from interfering with the wiring harness% of the external coupler 83 combined with the toilet unit 80, thereby improving port assembly and maintainability. Further, as shown in Figure 2, Figures 3, 7 and 8 show the sections connected to the throttle bobbin 23. The flow cable 24 passes through the lower portion of the throttling bobbin 23, and once extended backward and bent into a U-shape in the crank portion of the engine hanger 14, it is piped down the side of the main frame u. It extends forward and is connected to a throttling operation member (not shown in the figure) attached to the driving handle 36 (picture i). In the driving of the two-wheeled vehicle 1, when the power unit 4 corresponds to the expansion and contraction of the reaction single fan 26 When moving up and down, the throttle body 17 and the power unit 4 will also shake at the same time, so the main U-shaped bend of the throttle cable 24 will be appropriate. ) A4 specifications (210X297 public love)

!, ----- (Please read the precautions on the back before filling this page) Order -18- 536579 A7 ----- B7 V. Description of the invention () ^ '--16 Bend' This can prevent the section Liucai 24 creates excessive stress while ensuring its durability. And 'Even if the joint of the throttling bobbin 23 and the coupler ⑼ (please read the precautions on the back before filling this page) 80a is arranged in the same main body of the throttling body 17, but the hunting is as described above Configuration list-Zhiliu line 2 4 'Can you still serve the bowl?' Around the joint 80a of the beer-guarantee connection state 80 is not obstructed by the throttling cable 24 and bismuth. The low working space makes it easy to connect the external coupling 83 to the joint port 80a. Here, the operation of the above-mentioned intake air volume control device will be described. When the throttle valve 21 is completely closed, the electronic control unit 84 is based on the output signals of the influenza detector 64, the air temperature sensor 73, and the negative pressure sensor, etc., to determine when the engine is started and when it is idling at high speed. , General idling, engine braking and other engine operating conditions, and the stepping motor 39 is run and the output shaft 39a is rotated forward or reverse to obtain the opening of the bypass valve 35 corresponding to these conditions. When the output shaft 39a rotates forward or reverse, the drive member 37 is used to advance and retreat in the axial direction, and the bypass valve 35 is slid back and forth along the valve hole 34 via the joint member 53 to increase or decrease the opening of the metering groove 48 to the valve hole outlet 33. The area, which is the opening degree of the bypass 30, thus controls the inspiratory flow in the bypass 30. In particular, the tapered portion 48b of the metering groove 48 is advanced and retracted corresponding to the valve hole outlet 33, thereby making it possible to extremely finely control the suction flow rate from zero to a predetermined maximum value. Therefore, engine starting, high-speed idling, and normal idling can be performed automatically and appropriately. At this time, even if the Euclid connector 50 is shifted due to a manufacturing error between the axes of the bypass valve 35 and the output shaft 39a of the stepping motor 39, the shift will be caused by the joint member 53 in the first lateral direction. The movement of X and the driving member 37 are absorbed by the movement of Y in the second transverse direction, so despite this offset, this paper size applies the Chinese National Standard (CNS) A4 specification (210X297). -19- V. Description of the invention () 17 can still ensure the smooth sliding of the bypass valve 35, while also holding the spring 54 to suppress the vibration of the bypass valve 35. In addition, when the bypass valve 35 is fully closed, the side of the bypass valve 35 facing the valve hole outlet 33 has a negative suction pressure of the engine 5 at the side, and at this time, the Euclidean coupling 50 allows the bypass valve 35 Moving in parallel to the suction negative pressure action direction, the bypass valve 35 can be tightly connected to the surrounding of the valve hole outlet 33o, and the bypass suction can be prevented from leaking from the valve hole outlet 33o, or it can be suppressed to a minimum. Therefore, the valve hole 34 and the bypass valve 35 do not need special height and dimensional accuracy, which helps to improve productivity. Furthermore, since the axial end surfaces of the bypass valve 35 are communicated with each other through the sliding gap between the first corner hole 51 and the second corner hole 52 of the Euclidean connector 50 and the valve 35 and the valve hole 34, it does not matter If any pressure is transmitted to the valve hole 34, there will be no pressure difference between the axial end surfaces of the bypass valve 35. Therefore, the bypass valve 35 can be operated lightly even by the small output of the stepping motor 39. This means that the adaptability of the bypass valve 35 can be improved, and at the same time, the output of the stepping motor 39 can be reduced, or even reduced. Furthermore, the bypass valve 35 is given a potential energy from the valve hole inlet 33i toward the valve hole outlet 33 by the retaining spring 54, and because of the large convexity of the driving member blade of the output shaft 39a of the stepping motor 39 directly screwed The edge 37 & supports this potential imparting energy, so especially when the output shaft 39a rotates in the closing direction of the bypass valve 35, the driving member 37 presses the bypass valve 35 directly in the closing direction by the large flange 37a, so it is not held by the spring The presence of 54 'can increase the closing speed of the bypass valve 35. On the other hand, if the throttle valve 21 is opened, it can be supplied through the suction channel 7a. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 public love) -20-18536579 Invention description for the opening degree of the engine 5 Increase the inspiratory volume and control its output. (Please read the precautions on the back before filling in this page.) In addition, in the above-mentioned suction volume control device, the connecting flange 27 of the throttle body mouth is joined with a control area 28 'with a connection _ separated from it, and Since the control area 28 is equipped with a bypass valve 35, a stepping motor%, an air temperature sensor 73, a negative pressure sensor 76, a flu-saving sensor ^, and an electronic control unit 84, it can be performed together The processing of the flow body 17 and the manufacture of the material control and assembly including the control area 28, especially before the control area 28 is connected to the throttling body 17, by appropriately connecting a power supply such as a coupler 80, a stepping motor 39 can be performed. , Bypass valve 35, various sensors 64, 73,% and electronic control unit 84, etc., therefore, because it is only suitable for it, the inspector can be installed on the throttle body 17, so it will not be futile It can be used for assembly operations, which can help improve the productivity of Nanam. In addition, an electronic control unit is provided on the outer end surface of the control area 28. Since the stepping motor 39, various sensors 04, 73, 76 and the coupling 80 can be electrically connected through it, a stepping motor is used. 39. Purification of wiring sheets between various sensors 6 core 73 76 and coupling 80 each can further improve the assemblability. Furthermore, the stepping motor 39 is provided with a connecting pin 96 protruding in the direction of inserting the actuator washer 42, and the connecting hole 94 in which the connecting pin 96 is embedded is provided on the control area 28 side and is connected to the coupling 8. The connected guide frame 93 ′ therefore completes the electrical connection between the stepper motor 39 and the coupling 80 while the stepper motor 39 is installed to the control area 28 without the need for a special electrical connection operation, which can improve assembly. In addition, since the aforementioned guide frame 93 with the connection hole 94 is buried in the connection piece -21 19 536579 V. Description of the Invention 92, and the connection piece 92 is located between the door ～~ a—the motor 39 and the electronic control unit 84 疋The small parts f + g fk & r * fixed in the control area 28 are extremely easy and correct to bury compared to the large parts in the control area 28. In addition, the connecting piece 92 is placed on the Control area 28, by which the connection hole 94 of the guide frame 93 can be surely matched with the position of the closing mouth, and the connection lock with the stepping motor 39 is ensured. It is used for women's stepping motor 39. The actuator washer 42 is provided on the outer peripheral surface of the control area 28 which is different from the outer end surface of the control area M of the electronic control unit 84, so that the control area 28 can be compacted, and the stepping horse can be attached and detached.彡 39 is closely related to the setting of the electronic control unit 84, so that the stepper motor 39 and the bypass valve 35 can be easily maintained .... When the engine 5 is stopped, sometimes the waterjet in the air in the valve hole 34 may Condensed on the inner wall of the valve hole 34, but because it is arranged in the valve hole 34 and actuated as a seal between the ring 42 The piece 57 can prevent the condensed water from entering the stepping motor 39, so it can protect the stepping motor 39 and improve its durability. The pad is opened (please read the precautions on the back before filling this page) Especially because the sealing member 57 is The inner peripheral surface is held between the annular section 55 between the valve hole 34 and the actuator ring 42 and the stepping motor 39, and the inner peripheral surface has an inner peripheral surface closely contacting the outer peripheral surface of the root of the output shaft 39a of the stepping motor 39. Port 61, so the friction resistance of the inner peripheral opening 61 to the rotating surface of the output shaft is extremely small, which does not affect the adaptability of the bypass valve 35, and even if the top end of the output shaft 39a is exposed in the valve hole 34, It is still possible to seal the stepping motor 39 and the valve hole 34 with the aforementioned single sealing member 57. That is, because the structure of the bypass valve 35 is not limited, the application range of the aforementioned sealing member 5. is very wide. This paper scale is applicable to the country of China Standard (A4 size ⑵0X297 mm) -22- 536579 V. Description of the invention (Also when the engine 5 is stopped, the bypass valve 35 is usually used to make the valve hole outlet 33. It is completely closed, so even in the suction channel η Fuel gas inflow On the downstream side of the bypass 3G, the road valve can still be blocked ^ to prevent it from entering the wide hole 34. Therefore, even if the seal function of the Wanze Micha seal member 5 7 is reduced, it can still prevent the stepping motor Burst in the fuel gas to ensure its durability. Furthermore, since the length of the downstream side of the bypass 30 is set to be longer than the counterbore 34, it is difficult for the fuel gas generated on the downstream side of the intake passage 17a to pass through The full length of the bypass downstream portion prevents fuel gas from entering the valve hole 34 and helps protect the stepper motor 39. Also, the bypass 30 is located higher than the bypass inlet 3Η and the bypass outlet 31〇. The valve hole inlet 33i and the valve hole outlet 33 are located below the valve hole 34. Using this makes it difficult for foreign matter such as dust to enter the valve hole 34 through the valve hole inlet 33i and the valve hole outlet 33, so it is possible to avoid Defective operation of the bypass valve 35 caused by intrusion of foreign matter. The present invention is not limited to the foregoing embodiments, but various design changes can be made without departing from the gist thereof. For example, the bypass upstream groove 32 丨, the bypass downstream groove 32o, and the communication path 75 may be formed on the side of the joint surface between the control area 28 and the connecting flange 27. This paper size applies to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before filling this page)

-23- 536579 A7 B7 V. Description of the invention () 21 [Part number list] 1 ... Two-wheeled auto 20 ... Fuel injection valve 2 ... Seat 21 ... Throttle valve 3 ... Storage box 22 ... Valve shaft 4 ... Power unit 23 ... Throttle winding frame 5 ... Engine 24 ... Throttle cable 6 ... Cylinder block 25 ... Return spring 7 ... Cylinder Head 26 ... reaction unit 7a ... suction hole 27 ... connecting flange 8 ... stepless speed changer 28 ... control area 9 ... crank case 29 ... bolt 10. Gearbox 30 ... Bypass 11 ... Body frame 31i ... Bypass inlet 11a ... Upper frame 31ο ... Bypass outlet lib ... Lower pipe 32i._ ,. Bypass upstream groove 12 Upper bracket 32ο... Bypass downstream slot 13. ... Lower bracket 33i · .. Valve hole inlet 14.. Engine hanger 33ο... Valve? L outlet 15. ... connecting pipe 34 ... valve 孑 L 16, ... rear wheel, 3 5 ... bypass valve 17, ... throttle body 35a ... section 17a ... Suction duct 3 6 ... Driving handle 18 ... Suction duct 37 ... Drive member 19 ... Air cleaner 37a ... Large flange (Please read the precautions on the back before filling this page) This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) -24- 536579 A7 B7 V. Description of the invention () 22 37b ... small flange 39 ... stepper motor 39a ... output shaft 40 ... screw mechanism 41, 88 ... Screw hole 42 .. Actuator washer 43.57.98 .. Sealing member 44 ... Plug 45 ..... Bottom hollow 47 ... Key slot 48 ... Metering slot 48a ... Wide section 48b ... Taper part 49 " Key 5 0 ... Euclidean connector 51 ... 1st corner hole 52 ... 2nd corner hole 53 .... joining member 54 ... holding spring 55 ... annular section 58 ... reinforcing plate 59 .. Elastic covering material 60 ... Side opening 61 .. Inner peripheral opening 62 .. Fixing hole 64 ... Flu tester 64a, 73a, 76a, 93a. &Quot; Connection terminal 65 ... Mounting recess 6 6 67 ... .Rotator 68 ... Fixer 71 ... First sensor mounting hole 72 ... Second sensor Mounting hole 73 .. Air temperature sensor 74 ... Negative pressure detection hole 75 .. Communication path 76 .. Negative pressure sensor 80 .. Coupler 8 0 a ... Combination port 81. .. connector body 82 .. connector 83 .. external connector 84 ... electronic control unit 84a ... substrate 85 .. semiconductor component 86 ... wiring harness 87 ... positioning protrusion (please read the back first Please fill in this page for the matters needing attention) The paper size applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) -25-536579 A7 V. Description of the invention () 23 (Please read the notes on the back before filling out this page) 89 ... Positioning hole 90 ... Small screw 孑 L 91 ... Small screw 92 .. Connecting piece 93 ... Guide 94 ... Connecting hole 95 ... Terminal lead-out 96 .. Connecting pin 97 .. Seal groove 100.............. Cover .. 102. .. Irrigation port 103 .. synthetic resin; pouring resin 105.... Engagement protrusions 106... The second horizontal paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -26-

Claims (1)

536579 AB c D 6. Scope of patent application 1. An engine's air intake control device, which includes: a throttle body (17), which is used for the suction connected to the air inlet (7a) of the engine (5) The airway (17a) is provided with a throttle (2 丨); the bypass (30), which bypasses the throttle (21) and is connected to the airway (17a); the sensor (64, 73,76), which are used to detect the bypass valve (3 5) used to control the opening of the bypass (30), and the operating state of the engine (5); and the actuator (39), which is used for The person who drives the bypass valve (35) to open and close in response to the output signals of the sensors (64, 73, 76) is characterized in that it is integrally formed in a control area (28) connected to the throttle body (17). The coupling (80) combined with the external coupling (83) is installed with the aforementioned bypass valve (35), the aforementioned sensor (64,73,76) and the aforementioned actuator (39), and is located in the control area ( 28) the outer end surface is provided with an electronic control unit (84) for electrically connecting the aforementioned actuator (39), the aforementioned sensor (64, 73, 76) and the aforementioned coupling (80), and ' The synthetic resin (103) is poured into a cover (101) that can be installed in the control area (28) to cover the electronic control unit (84) to cover the electronic control unit (84) and seal the cover (1〇 1) Mounting section. 2. If the air intake control device of the engine in item 1 of the scope of patent application, the electronic control area (28) is housed inside the cover (101) and the cover (101) is embedded in the control The outer end of the area (28), with the cover (101) facing down, and inside the cover (101), the aforementioned synthetic resin (103) is poured until near its upper end. 3. If the air intake control device of the engine according to item 2 of the patent application scope, wherein the control area (28) is close to the cover (101), it is provided with 536579 AB c D 6. Scope of patent application The watering port (102) of synthetic resin (103) is mentioned separately. 4. If the air intake control device of the engine according to item 3 of the patent application scope, wherein the terminals (64a, 73a, 76a) of the sensor (64, 73, 76) are connected with the synthetic resin (1 〇3) The substrate (84a) of the electronic control unit (84) is directly connected. 5 · The air intake control device for an engine according to any one of the claims 1 to 4 in the scope of the patent application, wherein the aforementioned cover (101) is made of alloy. 6. If the air intake control device of the engine according to any one of items i to 4 of the scope of the patent application, wherein the aforementioned sensor is at least a flu-saving detector for detecting the opening degree of the aforementioned throttle valve (2 j) (64) a rising negative pressure sensor (76) for detecting the rising negative pressure of the aforementioned engine (5), and a suction temperature sensor (for detecting the temperature in the suction duct (17a)) ( One of 73) 0 This paper size applies to Chinese National Standard (CMS) A4 specification (210X29 ^ 57 -28-