TW544487B - Air intake system in engine - Google Patents

Abstract

A bypass passage (15) is formed in a throttle body (1) and comprised of a bypass inlet bore (15i) and a bypass outlet bore (15o), which open into an upstream portion and a downstream portion of an intake passage (2) respectively with a throttle valve (5) interposed therebetween, and a bypass intermediate portion (15m) which is provided in a device block (11) detachably secured to a mounting surface (10a) formed on the throttle body (1) and is connected at its opposite ends to the bypass inlet bore (15i) and the bypass outlet bore (15o), respectively, and a bypass valve (25), an actuator (28) and an output portion (8b) of a throttle sensor (8) are mounted to the device block (11) to form a bypass valve/sensor assembly (43). The bypass valve/sensor assembly (43) can be fabricated in parallel with the formation of the throttle body (1). Thus, it is possible to provide an enhancement in productivity of an air intake system in an engine.

Description

544487 V. Description of the Invention Field of the Invention The present invention relates to the air intake device of the engine, and in particular, to the connection of the good air intake channel of the body and the bypass passage bypassing the throttle valve. The bypass valve connects the actuator that drives it to open and close. BACKGROUND ART An intake device for such an engine is known, for example, as disclosed in Japanese Patent Publication No. 6-45654. The engine suction device is not familiar with the engine. The bypass valve body is formed on the throttle valve body. At the same time, the throttle valve body is installed by the bypass valve and the actuator. The throttle valve requires complicated processing, and all parts are required. Non-assembly to the throttle body itself is possible, and has disadvantages such as poor assembly. SUMMARY OF THE INVENTION The present invention has as its object to provide an automatic starting device for the aforementioned gasifier which eliminates the aforementioned disadvantages. In order to achieve the above-mentioned object, the present invention is connected to the bypass passage of the throttle valve in the suction passage of the throttle valve body, and closes the bypass valve of the bypass passage, and is connected to actuate the opening and closing of the bypass valve. The bypass passage is included in the throttle valve body, and the bypass inlet and the bypass outlet hole which are respectively opened at the upstream portion and the downstream portion of the suction channel through the throttle valve are installed and detachably fixed. The bypass unit in the device unit formed on the installation surface of the throttle body to connect the two ends to the bypass inlet hole and the bypass outlet hole, and installed in the I unit to detect the bypass valve The first feature is that the output portion of the actuator and the throttle sensor of the throttle valve opening degree constitute a bypass valve and a sensing assembly. This paper is suitable for financial standards (_ A4 size ⑽χ297 public) V. Description of the invention (2) Conduit's attack can reduce the processing of the throttle body, and at the same time, the sensor assembly and the sensor The valve body is produced at the same time, and production can be sought. In addition, when the unit is removed from the throttle body, maintenance of the bypass passage, the bypass valve, and the throttle sensor can be easily performed. Moreover, by borrowing: the specifications of bypass valves, actuators, throttle sensors, etc. in the unit, using the same valve body, can easily provide the suction device for different engines. Improve the mass productivity of the throttle body. In addition to the first feature of the present invention, the bypass inlet and the bypass outlet are arranged in parallel with each other as a second feature. / According to the second feature, the bypass population hole and the bypass exit hole can be borrowed from the side of the safety surface by a multi-axis drilling machine or formed in parallel by a plurality of mold cores in one stroke, which can shorten the production time. Furthermore, in the present invention, in the first feature, the bypass inlet hole and the bypass outlet hole are arranged parallel to the valve shaft shaft hole of the throttle valve as a second feature. According to this third feature, the bypass inlet hole and the bypass outlet hole and the valve shaft hole can be formed from the mounting surface side by a multi-axis drilling machine or by a plurality of parallel cores in parallel at the time of prayer. It can be greatly sought to shorten the manufacturing time. Furthermore, according to the present invention, in addition to one of the first to third features, the mounting surface is formed as a flange integrally formed on the bottom surface of the housing of the throttle body, and on the other hand, a flange that closes the open surface of the housing in a watertight manner. The fourth feature is that the aforementioned device unit is integrally formed in the housing. According to this fourth feature, the installation of the installation surface of the device unit can be performed, the same as 544487

The closure of the open surface of the casing at the time can become a simple cover that does not need to be used for the closure, which can help simplify the structure. Furthermore, the present invention adds one of the fourth to fourth features, and the above-mentioned device unit is made of synthetic resin as the fifth feature. According to the characteristics of this brother ', it is possible to form the bypass intermediate portion and the synthetic resin device unit at the same time, which can shorten the production time. In addition, by adopting a lightweight synthetic resin device unit, it is possible to reduce the overall weight of the suction device. In the invention, the suction passage of the throttle valve body is connected to a bypass passage that can bypass the throttle valve. The bypass passage is inserted to cooperate with a metering hole in the bypass passage to control the suction flow in the bypass passage. In the air intake device of the valve-passing engine, the aforementioned metering hole is arranged such that, even when the intake passage is horizontally arranged, and when the inlet of the intake passage is facing upward, the metering hole is located more than the opening of the bypass passage. The bypass inlet hole and bypass outlet hole on the upstream side and downstream side of the air intake duct are made as the sixth feature. According to the sixth feature, even if the suction device is used in one of the side suction type and the down suction type, since the metering hole becomes a position occupying above the bypass inlet hole and the bypass outlet hole, Oil, water, and other fluid foreign matter in the circulating gas invade the bypass passage. After the foreign engine is stopped, the foreign matter flows naturally to the side of the bypass inlet hole and the bypass outlet hole, which can also prevent it from attaching to the measurement as usual. Perimeter of the hole. Therefore, it is possible to avoid foreign matter around the periphery of the metering hole; the bypass valve may malfunction or the opening degree of the bypass valve caused by the accumulation of the east junction may be abnormal. In addition, because such a suction system has universality, it not only expands the degree of freedom of its layout, but also improves mass productivity and reduces costs. 544487 V. Description of the invention (4) In addition to the sixth feature of the present invention, in the aforementioned throttle valve, the suction ... "This is-the valve body 'is separated by the front hole ... the bypass opening of the mountain and downstream sections respectively , Outlet hole, and the state of the installation on the installation surface of the removable throttle body 罝 — 罝 is formed in the mouth hole and ^ ㈣ connected to the aforementioned bypass. The hole 'at the same time with the aforementioned metering hole in the middle "Pan Cheng said the bypass channel", and the aforementioned "quota" and an actuator for driving the opening and closing of the bypass room are installed in the aforementioned device unit as a seventh feature. According to the seventh feature, the yuan change can reduce the throttling. Processing of wide bodies and simultaneous production of joints can be achieved by installing 4 units, valve and actuator body in parallel, which can improve productivity. Moreover, when a single port of the device is removed from the throttle body, the side passage can be easily implemented. Or ^ valve maintenance. In addition, dream, close the 'step motor specifications' on the side of the unit, while using the same valve body-can easily provide the suction device of different specifications of the engine , Can improve the mass productivity of the throttle body. According to the seventh feature, the aforesaid device unit is made of a tree as the eighth feature. The flow rate is based on the eighth feature. The device unit can be formed into a bypass intermediate portion at the same time by molding with synthetic resin, and the formation of the bypass passage becomes easy. By adopting a synthetic resin device unit ^, it is possible to reduce the overall weight of the suction device. Furthermore, the present invention connects the bypass passage of the throttle valve to the suction passage of the throttle valve body and closes the bypass passage. In the side suction of the passage, the suction device connected to the engine that can drive the actuator that closes the bypass valve, the throttle body is located at the upstream and downstream parts of the suction channel through the front throttle space through the throttle body. Do not open the bypass inlet hole and bypass outlet hole, as well as detachably fixed to the paper size Applicable National Standard (CNS) A4 specification (21〇 > < 297 public ^ 544487 V. Description of the invention (5) The device unit whose shaft is on the mounting surface of the aforementioned throttle body, the bypass inlet hole and the bypass outlet hole at the two ends are used to form the aforementioned bypass. The shaft holes are arranged in parallel to the aforementioned one of the throttle bodies. Bypass inlet hole and bypass outlet hole, and the aforementioned bypass valve and actuator are installed in the aforementioned two units as the ninth feature. According to the ninth feature, the processing of the throttle body can be reduced and can be performed in parallel. Fabrication of an assembly of a throttle body and a device unit, a bypass valve and an actuator: can contribute to the improvement of productivity. In particular, since the bypass inlet hole and the bypass outlet hole are opened in the mounting surface of the throttle body It can be arranged in parallel with the shaft hole of the throttle valve. These holes can be borrowed by a multi-axis drilling machine from the side of the safety surface, or during prayer, it can be formed in one stroke by parallel multiple solid cores, which can shorten the production time. In addition, when the device unit is removed from the throttle body, maintenance of the bypass passage, the bypass valve, the throttle sensor, etc. can be easily performed. In addition, the specifications of the bypass valve and the stepping motor in the device unit can be improved. -While using the same-throttle valve body, one can simply provide suction devices for engines with different specifications, which can increase the amount of throttle valve body produced. And this month, add the ninth special desire. In the bypass middle part, a measuring hole that cooperates with the bypass valve to control the amount of air in the bypass passage is set, and the measuring hole is configured to make the measuring hole horizontal. In either of the above two types of the air intake duct and the air intake duct having the inlet thereof facing upward, either of them is positioned above the bypass inlet hole and the bypass outlet hole as the tenth feature. According to the tenth feature, even if the suction device uses a side suction type in which the suction channel is arranged horizontally, or the inlet of the suction channel is directed upwards and downwards, the paper standard is translated into Chinese National Standard (CNS) A4 (21QX297JJ) ^ 544487 V. Description of the invention (6 Among them-a 'metering hole has also become a position above the population hole and the bypass outlet t' even if oil, water, etc. in the blow-by gas or exhaust gas recirculation ^ dynamic foreign objects invade people Kushiro, the operation of these foreign body engines =:;, towards: ... and the side of the bypass exit hole naturally flows down and sucks: the road has been caught for a long time, and μ is attached to the periphery of the measuring hole as usual. Therefore, you can Avoidance of foreign matter around the periphery of the metering hole, or bypass valve malfunction or abnormal opening caused by accumulation. Moreover, the present invention adds a 9th or 1G special feature, and the aforementioned device unit is made of synthetic resin as the first 11th feature. According to this 11th feature, by forming the synthetic resin device unit, it is possible to reduce the production time by simultaneously forming the bypass area. Furthermore, by using a lightweight synthetic resin device unit, it is possible to obtain an air suction device. Of the whole Lightweight In addition, the aforementioned actuator corresponds to the output section of the throttle motor 28 'throttle sensor in the embodiment of the present invention described later and corresponds to the coupling coil 8b. The above and other objects, features, and advantages of the present invention are as shown in the attached drawings. From the description of the preferred embodiment detailed below, a simple explanation of the drawings can be clearly understood. Figure 1 is a side view of the suction device of the engine of the present invention, and Figure 2 is 2-2 of Figure 1 Sectional view, Fig. 3 is a sectional view taken along line 3-3 of Fig. 1 ... Fig. 4 is a sectional view taken on line 4-4 of Fig. 3, and Fig. 5 is taken along line 5-5 of Fig. 4 ' Fig. 6 is a sectional view taken along line 6-6 of Fig. 3, Fig. 7 is a sectional view taken along line 7 of Fig. 3, and Fig. 8 is a sectional view taken along line 8-8 of Fig. 3, and Fig. 9 is a suction device. An exploded oblique view. In order to implement the best form of the invention, the first step is -7. The size of the paper is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) 544487.

V. Description of the invention (Please read the precautions on the back before filling this page) First, in Figure 1 and Figure 2, the throttle body 丨 has the suction duct 2 extending horizontally = ground. The population of its suction channel 2 forms a funnel shape, with the air filter not shown in the figure, and the outlet side is connected to the suction hole of the engine, which is not shown, on the sides of the middle part of the instant valve body One of the shaft holes 4, 4 orthogonal to the axis of the suction force 2, a pair of hubs 3, 3, is rotatably supported by the shaft 6 of the shaft holes 3, 3, and fixedly opens and closes the suction channel 2. f 3L immediate stage valve 5. At one end of the valve shaft 6, the throttle cylinder 7 of the operating wire 9 of the throttle operating structure 2 (not shown) is fixedly connected, and the claw valve 5 of the throttle cylinder 7 is given potential energy in the closing direction. And the return spring μ is connected. At the other end of the valve shaft 6, the order of the throttle sensor 8 fixed to detect the opening degree of the throttle valve 5-the rotor 8a. In addition, reference numeral 44 denotes a support bracket for the sheath of the above-mentioned operation wire 9 and is screwed to the throttle body 1. As shown in FIG. 2 and FIG. 9, it is integrally formed on one side of the throttle body 丨; On the bottom surface 10a of the casing 10, the other hub 3 'is protruded, and the shaft hole 4 of the hub 3 is arranged orthogonal to the bottom surface 10a. If the bottom surface of the casing is a women's clothing surface, a plurality of bolts 12, 12 are fixed to the mounting surface 10a of the device unit u housed in the casing 10. In addition, a flange 11c for closing the open surface of the casing 10 is integrally formed in the device unit 11. Between the flange iic and the joint surface of the casing 1G, a sealing member 13 which is made watertight in the casing 1 () is interposed. On the opposite side of the device unit 11 from the aforementioned mounting surface 10a, a rotor receiving hole 14 is formed to receive the other hub 3 'and the rotor 8a as described above. As shown in FIGS. 3 to 5, 7 and 8, a single magic i is set up from the throttle body 1 to form a bypass passage 15. Its bypass path 15 consists of

544487 A7 B7 V. Description of the invention (8), that is, the bypass inlet hole 15i is formed on the flow side of the throttle valve 5 to communicate between the suction duct 2 and the aforementioned mounting surface 10a and is inserted in the throttle valve. Body j; the bypass outlet hole 15o is formed on the downstream side of the throttle valve 5 to communicate between the suction duct 2 and the aforementioned mounting surface i0a and penetrate the throttle body 1; and the bypass intermediate portion 15m, It is installed in the device unit 1 and communicates between the bypass inlet hole 15i and the bypass outlet hole i50. Therefore, the bypass passage M is connected to the suction passage 2 as bypassing the throttle valve 5. As shown in FIG. 5, the device The bypass intermediate portion 15m of the unit 11 is composed of the following: the upper groove portion 16 and the lower groove portion 17; the through hole 18 is connected to one end of the upper groove portion 16; the valve guide hole 9 is upward from the through hole 8 The erection and the Jixia hole 20 connect the middle portion of the valve guide hole 19 to the other end of the downflow groove portion 17. At that time, the upflow groove portion 16 is arranged obliquely in the up-down direction, and the bypass opening is opened at the lower end portion. The hole 15i (see FIG. 7), and the through hole 18 is opened at the upper end portion. The downstream groove portion 17 is longer than the upstream groove portion 16, and The valve guide hole 19 extends slightly horizontally at the same time, while flexing downward from the middle, and opens a bypass outlet hole 15 at its lower end. In this way, the metering hole 20 is smaller than the bypass inlet hole 15 and the outlet hole 15 It is arranged below the inlet side of the suction duct 2. Therefore, as shown in the figure, even when the suction duct 2 is arranged horizontally, or when the inlet of the suction duct 2 faces upward, the metering hole 20 becomes a bypass inlet. Positions above the hole 15i and the bypass exit hole 15o. That is, the bypass passage ^ usually has the counter hole 20 as the apex, and has a shape that faces the bypass entrance hole 丨 "and the bypass exit hole 15o. As clearly shown in Figures 3 and 8

11 544487 A7 Description of the invention The t-setting unit 11 has a suction negative pressure lower than that of the suction duct 2 of the throttle valve 5, that is, takes out the raised negative pressure taking-out hole 21 for raising the negative pressure. The raised negative pressure take-out hole 21 is composed of the following: The negative pressure introduction hole 21a is located on the downstream side of the throttle valve 5 and constitutes a communication between the suction port 2 and the mounting surface 10a and is inserted through the throttle valve body. 1; and the negative pressure induction hole 21b, which is connected to the negative pressure introduction hole 2ia, and must be bent upward to extend and be installed in the device unit ^, and the negative pressure induction 21b above the negative pressure induction 21b is a sensor for raising the negative pressure. 23 is mounted on the device unit 11. Among the above, the bypass inlet hole 15i, the bypass outlet hole 150, and the negative pressure introduction hole 21a are all arranged in parallel with the shaft hole 4 '. Between the mounting surface 10a of the mutually joined housing 10 and the inner side surface of the device unit u, a sealing member 22 is inserted that surrounds each part of the bypass passage 5 and raises the negative pressure extraction hole 21. In FIGS. 3 to 6, a piston-shaped bypass valve 25 is slidably fitted in the valve guide hole 19. The bypass valve 25 has a hollow portion 25a that opens the bottom surface to the through hole. A side wall of the hollow portion 25a is provided with a metering groove% that cooperates with the aforementioned metering hole 20 to control the air flow rate in the bypass passage 15. The gully 26 is formed by a wide portion opened at the lower end of the bypass valve 25 and a narrow portion 26b connecting the upper end of the wide portion 26a. The upper portion of the wide portion can be raised and lowered to face the high opening position of the measuring hole 20 and only The narrow width portion 26b faces between the low opening positions of the measuring hole. At that time, the bypass valve 25 is moved so that the positioning protrusion 27 engaged with the wide portion 26a is formed in the device unit u. Above the bypass valve 25, a bypass valve is provided in the device groove 11. Please read ‘Notes on the back side’ before filling in this page.

paint

544487 A7 '------— B7__ V. Description of the invention (10) ~ ^ Stepping motor with side-by-side axis 28' The shaft M of its stepping motor ^ includes a spiral shaft 30 extending to the bottom and / or below 30 The screw shaft 30 locks a screw hole 31 formed in the center of the bypass valve 25. Furthermore, as shown in FIG. 3, in the device unit, as shown in FIG. 3, a mounting recess 32 adjacent to each other with a thin partition wall 11 a and lib formed in the rotor receiving hole “and the upstream groove portion 16, and a sensor bracket into which the mounting recess 32 is inserted. %, Keep the light-on coils facing the rotor center in the rotor receiving hole 14 across the barrier 1a, and the suction air temperature sensor 34 that detects the temperature in the upstream groove 16 through the partition wall lib. The coupling coil 8b is composed of the rotor 8a cooperates with a throttle sensor 8 that electrically detects the opening degree of the throttle valve 5. By using the above-mentioned throttle sensor 8, the negative pressure sensor 23, and the air temperature sensor 34, the throttle valve opening degrees 0 ratio, Relevant engines such as increasing the negative pressure and suction temperature, or the engine temperature Te detected by the cooling water temperature sensor of the engine not shown in the picture or the engine temperature Te detected by the cooling water temperature sensor of the engine not shown in the picture The operating condition information is input to the electronic control device 36 connected to the aforementioned stepping motor 28. The sensor holder 35 includes the first step of pressing and holding the stepping motor 28 and the negative pressure sensor 23 above the housing 10 as a whole. And 2 The fixed arms 3 5a and 3 5b form the first and second locking claws of the first and second fastening arms 35a and 35b which are elastically fastened to the fastening recess 37a and the fastening hole 37b of the device unit. 38a, 38b. Therefore, by using the first and second buckle claws 38a, 38b and the buckle recess 3 7 a and the buckle hole 3 7 b and the buckle hole 3 7 b, the sensor bracket 35 can be installed. It is disassembled and installed on the device unit 11, which becomes a stepping motor 28, a negative pressure sensor 23, a coupling coil 8b, and an air temperature sensor 34. The paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) ) -13

Order I IA- (Please read the precautions on the back before filling out this page) 544487 V. Description of the invention (11) Keep in the device unit 11. In I 7C 11 and the sensor bracket 35, while cooperating to define the wiring induction path 39, the tabs 40 and 41 penetrating through the bottom of the housing 110 are integrally formed to 'connect the stepper motor 28, and the surface of the coil is simple. The various wires 42, 42 of the pressure sensor and air temperature sensor 34 are pulled out of the casing 10 through the wiring induction path 39. As described above, the bypass valve 25, the stepping motor 28, the light-closing coil, the rising negative sensor 23, and the air temperature sensor 34 are installed in the device unit to form the bypass valve / sensor assembly 43. Next, the effect of this embodiment will be described. When the throttle valve 5 is fully closed, the electronic control device is previously inputted as the throttle valve opening degree of 0 th, increases the negative pressure Pb, and absorbs the air temperature τ & The information about the engine operating conditions is used as a reference. When the engine starts, ^ When the building is idling normally, the engine brakes, etc., should be able to correspond to the most appropriate opening degree of the bypass valve 25 of the engine running bar, calculate the energization step by step, and connect the rotor 29 and the screw shaft 3. —From forward rotation or reverse rotation; = 30. Bypass valve 25, which cannot be rotated during rotation or reverse rotation, opens the pilot hole. However, when the 'bypass valve 25 rises to occupy the high opening position, since the wide portion 26a of the metering groove 26 of the bypass valve 25 exposes the metering money of the bypass passage 15, the intake air control ratio flowing into the engine of the bypass passage 15 The opening area of the metering hole 20 toward the wide part ^ is gradually increased, which can correspond to the engine start or the first idling operation, and the bypass valve 25 descends to occupy the low opening position. The width of the dove is exposed to the measurement hole 20, and the size of the paper flowing to the side passage 15 is turned to the middle of the paper. The opening area of the hole 20 is relatively small, which can correspond to the normal idling operation or engine brake. An open throttle valve 1 2 3 4 is provided, and the intake air is supplied to the engine through the intake passage 2 according to the opening degree. Turn to the field of output operation. In this way, the breast pump I is placed in the device unit u that is detachably mounted on the casing 10 as a whole with the throttle body i. Since the bypass valve 25, the stepper motor 28, and the coil are installed, 8b. The temperature increase sensor 23 and the air temperature sensor 34 can form a bypass valve and sensor assembly. 43. Reduce the processing of the throttle body i. At the same time, the throttle body and the bypass valve and sensor assembly can be produced in parallel to improve productivity. Moreover, from the throttle body ... the lower device = Wu 11, Maintenance of the bypass 15 or the bypass valve 25, the throttle sensor 8, etc. can be easily performed. In addition, by changing the specifications of the bypass mail, step, motor 28, various sensors 8, 23, and 34 in the unit u, Use of the same valve body 1 'One side can simply provide the suction device of engines with different specifications' can improve the mass productivity of the throttle body 丨 And the bypass passage 15 is provided in the bypass of the throttle body 1 The inlet hole 5i and the bypass outlet hole 15 and the bypass intermediate portion 15 connected to the bypass inlet hole 15i and the bypass outlet hole 15 formed at both ends of the synthetic resin device unit 1Uf are imitated. The inlet hole 15i, the bypass outlet hole 15 and the negative pressure introduction hole 21a are arranged in parallel with the shaft hole 4 supporting the valve shaft 6 of the throttle valve 5, and the shaft hole 1 'is bypassed to the inlet hole 15i and the outlet hole 15 〇 & Negative pressure introduction hole 21 & Borrow a multi-spindle drilling machine from the 10a side of 2 Anling surface, or borrow flat when casting The plurality of cores can be formed in one stroke. Moreover, since the bypass intermediate portion 15m is formed simultaneously with the formation of the synthetic resin device 4 unit 11, the production time can be greatly reduced 544487 A7 V. Description of the invention (13 rooms) And by using a lightweight synthetic resin device unit U, the overall weight of the suction device can be reduced. Furthermore, the bypass passage 15 has a metering hole 20 that is higher than the bypass inlet hole 15i and the bypass outlet hole 15. And placed on the inlet side of the suction duct 2, as shown in the example, it is needless to say that when the side suction throttle body 1 with the suction duct 2 arranged horizontally is used, even if the inlet of the suction duct 2 is directed upward When the suction throttle body 1 is lowered, the metering hole 20 also occupies the position above the bypass inlet hole 15i and the bypass outlet hole 15o. The bypass passage 15 usually uses the metering hole 20 as the apex. The hole 15i and the bypass outlet hole 15 are lowered, and even if fluid foreign matter such as blow-by gas supplied from the inlet side of the intake passage 2 or oil or water in the exhaust gas recirculation gas enters the bypass passage, such foreign matter After the engine stops running, bypass The aperture 15i and the bypass side outlet hole 15〇 naturally flow down to the intake passage 2 flows into still not adhered to the peripheral edge of the metering orifice 2〇 circumstances. Therefore, it is possible to avoid freezing of the foreign matter on the periphery of the measuring hole 20 or malfunction of the bypass valve 25 or abnormal opening due to accumulation. In addition, due to the versatility of such a suction device, the arrangement of the suction device is not only expanded, the mass productivity can be improved, and the cost can be reduced. The mounting unit 11 combined with the bolts 12 and 12 on the mounting surface 10a of the casing 10, because the flange 11c that locks the open surface of the casing 10 is integrally formed, and at the same time, the installation and The open-face latching of the casing 10 becomes a cover body that is not required for its latching, which can help simplify the structure. The present invention is not limited to the above embodiments, as long as various designs can be changed without departing from the scope thereof. Set by

(Please read the precautions on the back before filling out this page). Order |. Line _ 544487 A7 B7 V. Description of the invention (Η) Component number comparison L · ·· Throttle body 2 ·· Intake channel 3 ·· · Shaft hole 3, " • Shaft hole, hub 4 ··. Shaft hole 4, ·· · Shaft 孑 L 5 ··· Throttle valve (butterfly) 6 ··· Valve shaft 7 ··· Throttle 8… Throttle sensor 8a " • Rotor 8b ... Output 9 ... Operating line 10 · •• Shell 10a… Mounting surface 11 · •• Unit 11a… Partition lib… · Partition 11c… Flange 12 · •• Bolt 13 · •• Sealing member 14 ••• Rotor receiving hole (please read the precautions on the back before filling this page) 15 ··· Bypass 15i ... Bypass inlet 15m ... Bypass middle hole 15〇 · ·· Bypass exit hole 16 ... Upstream structure 17 ... Downstream structure 18 ... Through hole 19 ... Valve guide hole 2 0 ... Measuring hole 21 ... Raise negative pressure take-out hole 21a ... Negative pressure introduction hole 22 ... ·· Sealing member 23 ... Raised negative pressure sensor 24 ... Return spring 25 ·· Bypass valve 25a ·· Hollow section 2 6 ... Measuring groove 26a ·· Wide section 26b ... Narrow section 27 ... Position protrusion 28 ... Stepping motor 29 ... Rotor 17 This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) 544487 A7 B7 V. Description of the invention (l5) 3 0 ... Spiral shaft 3 1 ... Screw hole 32 · ·· Mounting recess 34 ... Air temperature sensor 35 ... Sensor bracket 35a ... First fastening arm 35b ... Second fastening arm 36 ·· Electronic control device 3 7 a ... Embedded recess 3 7 b Knife 38a ... 1st locking claw 38b ... 2nd locking claw 39 ... Wiring guide 40 ... Projection 41 ... Projection 42 ... Wire 43 ... Bypass valve / sensor assembly 44 ... Support bracket

Pb ... raise negative pressure

Ta ...

Tt ... engine temperature eth ... throttle valve opening (please read the precautions on the back before filling this page) 18 This paper size applies to China National Standard (CNS) A4 specification (210X297 mm)

Claims (1)

6. Scope of patent application. The suction device 4 of the engine is connected to the suction channel ⑺ of the throttle body ⑺, and is connected to the bypass passage (15) that can bypass the throttle valve 4. 4 is used to open and close the bypass passage (15). The bypass valve (25) is connected to an actuator 28 that can drive the bypass valve to open and close, and the bypass channel (15) includes: a bypass bypass inlet 1 (15i) and a bypass outlet (15). It is connected to the aforementioned instant valve body (1) through the aforementioned throttle valve (5), which are respectively opened at the upstream and downstream portions of the suction channel; and the bypass intermediate portion (15m), which is installed in the The device unit (11) formed on the mounting surface (10a) of the throttle body (1) is detachably fixed to connect the two ends to the bypass inlet hole (5i) and the bypass outlet hole (15). In addition, a throttle sensor (8) for detecting the opening of the bypass valve (25), the actuator (28), and the throttle valve (5) is installed in the device unit (11). The output unit (8b) constitutes a bypass valve / sensor assembly (43). 2. The suction device of the engine according to the scope of the patent application, wherein the bypass inlet hole (15i) and the bypass outlet hole (15) are arranged in parallel with each other. 3. If the suction device of the engine in the patent application No. 丨, the shaft of the bypass inlet hole (15i) and the bypass outlet hole (15) relative to the valve shaft (6) of the throttle valve (5) The holes (4,) are arranged in parallel. 4. If the suction device of the engine in the scope of patent application No. 1, 2 or 3, the bottom surface of the casing (10) which is integrally formed on the throttle body (1) of the women's surface (10a), On the other hand, the sixth (6) of its casing (10) is closed in a watertight manner, and the flange (11c) of the patent application Fanyuan surface is integrally formed in the aforementioned device unit (11) housed in the casing (10). 5 · If the scope of patent application is the first! The air suction device of the engine of claim 2, 2 or 3, wherein the device unit (11) is made of synthetic resin. 6. The engine's suction device is connected to the suction channel (2) of the throttle body (1), connected to bypass the bypass passage (15) of the throttle valve (5), and in the bypass passage (15) ) Insert a bypass valve (25) that can cooperate with the metering hole (20) in the middle of the bypass channel (15) to control the suction flow in the bypass channel (15), and that the aforementioned metering hole (20) is When the suction duct (2) is arranged horizontally, and the inlet of the suction duct (2) is directed upward, the i-hole (20) is located at the suction position from the opening of the bypass passage (15). The bypass inlet hole (15i) and the bypass outlet hole (15) on the upper side and the downstream side of the channel (2) are further above. 7_ The suction device of the engine in the sixth item of the patent application, wherein the aforementioned bypass passage (15) includes: a bypass inlet hole (15i) and a bypass outlet hole (15), which are connected to the aforementioned throttle body (1 ) 'Those openings in the upstream and downstream sections of the suction duct (2) through the aforementioned throttle valve (5), respectively; and the bypass intermediate section (15m), which is detachably fixed to the section formed The device unit (11) of the mounting surface (10a) of the flow valve body (1), which connects the two ends to the aforementioned bypass inlet hole (15i) and the bypass outlet hole (15), and has the aforementioned in the middle For the measurement hole (20), the bypass valve (25) and an actuator (28) for opening and closing the bypass valve (25) are installed in the device unit 11. 20 This paper size is in accordance with Chinese National Standard (CNS) A4 specification (21〇χ297). 544487 A8 B8 C8 D8 6. Application for patent scope 8. If the patent application scope for the engine suction device of item 7, the aforementioned unit ( 11) Made of synthetic resin. 9_ An air intake device for an engine, which is connected to the air intake duct (2) of a throttle body (1), is connected to a bypass passage (15) that can bypass the throttle valve (5), and opens and closes the bypass passage (15) The bypass valve (25) is connected to an actuator (28) that can drive the bypass valve (25) to open and close, and the bypass channel (15) includes: a bypass inlet hole (15i) and a bypass outlet hole ( 15〇), which are connected to the aforementioned throttle body (1) ′ through the aforementioned throttle valve (5), and are respectively opened at the upstream portion and the downstream portion of the suction channel (2); and the bypass intermediate portion (15m ) Is a device unit (11) that is detachably fixed to the mounting surface (10a) formed on the throttle body (1) to connect the two ends to the bypass inlet hole (15i) and the bypass. The outlet hole (15) is also arranged in parallel with the shaft hole (4) of the valve shaft (6) of the throttle valve (5), and is placed in the aforementioned position of the flow valve body (1). The bypass inlet hole (1 $ i) and the bypass outlet hole (15) are installed in the device unit (11), and the bypass valve (25) and the actuator (28) are installed. 10. If the air intake device of the 9th engine of the scope of the patent application, in the aforementioned bypass middle (15m), a metering hole (20) connected to the aforementioned bypass valve (25) to control the intake of the bypass passage (15) is provided. ), And the metering hole (20) is configured in such a way that the metering hole (20) is arranged horizontally even if the suction duct (2) is arranged horizontally and the inlet of the suction duct (2) is directed upward. A kind of 牯 is also located than the aforementioned bypass inlet hole (15 丨) and bypass outlet hole (1 ^) 21 This paper size is applicable to China National Standard (CNS) A4 specification (21〇x297) Chu 544487 A8 B8 C8 D8 Six 2. The scope of patent application is higher. 11. The suction device for an engine as claimed in claim 9 or 10, wherein the aforementioned device unit (11) is made of synthetic resin. 22 This paper size applies to China National Standard (CNS) A4 (210X297 mm)