TW527468B - Intake amount control system for engine - Google Patents

Abstract

To provide an intake amount control system for an engine which makes it possible to concurrently perform the machining of a throttle body and the manufacture of an assembly of an idle air control valve, an actuator and a throttle sensor, and which can contribute to enhancement of productivity. A synthetic resin made casing 10 separate from a throttle body 1 is fitted to the throttle body 1 on one end side of a valve shaft 4 of a throttle valve 3, and an idle air control valve 25, an actuator 26 and a throttle sensor 37 are disposed in the casing 10.

Description

527468 V. Description of the invention (1) ---- Detailed description of the invention The technical scope of the invention ^ The invention relates to the improvement of the intake control device for engines, and includes: a throttle body, which A throttle valve is connected to the suction channel connected to the air hole; a bypass pipe is connected to the suction channel by bypassing the throttle valve; an idle air control valve controls the opening degree of the bypass pipe when the throttle valve is fully closed An actuator that opens and closes the idling air control valve; and an influenza detector that detects the opening degree of the throttle valve. Prior Art Regarding the engine air intake control device, it is known as disclosed in Japanese Patent Shikaihei 3-1 22246. In the past, the engine wants to solve the problem. The engine uses an air intake volume control device to integrally form the casing in the throttle body. The casing has been equipped with an idle air control valve, an actuator, and an influenza sensor. Therefore, It is impossible to install the idle air control valve, the actuator, and the throttle valve after processing the throttle body with the casing, and it is difficult to say that the productivity is good. The present invention has been proposed in view of this situation, and its object is to provide an assembly capable of simultaneously processing the throttle body, the production of a two-speed gas control valve, an actuator, and an influenza detector. Engine intake control device with improved performance. To solve the problem with a clamp (means In order to achieve the above object, the present invention is an engine air intake volume control device, which is provided with a throttle body, which is connected to the air intake port of the engine

91109766.ptd Page 5 527468 $, description of the invention (2) The road is provided with a print valve; the bypass pipe is relocated to bypass the throttle valve and connected to the suction channel; the idle air control 闾 'is in the fully closed state of the throttle valve Controlling the opening degree of the bypass pipe; an actuator that opens and closes the idle air control valve; and an influenza detector that detects the opening degree of the throttle valve; its first feature is that it is at one end of the valve shaft of the throttle valve; On the side, a housing different from the body is installed on the throttle body, and the idle air control valve, the actuator, and the flu-saving detector are arranged in the housing. According to the first feature, the processing of the throttle body and the production of the casing and the sensor-type Pei ligand can be performed simultaneously, and the productivity can be greatly improved. I ί12 Γ In addition to the first feature, the second feature is that a bypass downstream groove that is connected to the bypass upstream groove center that is connected to the upstream side of the suction channel is formed in the aforementioned section. At least one of the joint surfaces was tested again. According to this second special square molding, the same day t can be further improved in at least one of the throttling body and the shell. -^ Slot and bypass downstream slot can promote production and "The present invention, in addition to one of the features of the electronic control device," the third feature is that the sensor is positioned and fixed on this substrate and the t-plate is connected to the aforementioned casing. The aforementioned actuator and throttle

In addition to the second feature of the electronic control device, the fourth feature of the present invention is that the sensor is positioned and fixed on this substrate: the board is connected to the above-mentioned housing and the throttle is connected to the actuator according to the third and fourth aspects. The number of control devices can be increased, and the actuator, the flu-saving detector, and the electronic unit can be improved in assembly.

(6) The housing can be protected more securely by the housing. Furthermore, in addition to the present invention, the feature is that the first two are the special features of the first, so it can protect the interest rate air control port made of :, 'The casing has excellent heat insulation, and its Affected by the heat of the engine. Two r | thieves, flu-saving detectors, and further, in addition to the first feature of the present invention, the θ feature is parallel to any of the features of the front, the control sign and the control valve and actuator. The α 速 oxygen channel is configured with the aforementioned idle air. Furthermore, in addition to the f), the present invention is configured with the aforementioned idle air in the intake channel and is characterized in that according to the sixth and seventh features, the speed valve and the actuator. Road configuration can reduce its extension to ^: f Greek valve and actuator along the suction, and also requires miniaturization of the double body and the entire suction volume control device. In addition to the second feature, the eighth feature is that the valve chamber and part of Γ Φs house the aforementioned idle air control valve: = = open and close valve holes are connected to the foregoing. According to Peregrine Facts: No. 8 feature 'Even if foreign matter such as dust invades the bypass from the suction airway = the hole will not rise to the wide room and the valve hole, which can prevent the implementation of the difference. An embodiment of the present invention is illustrated 527468 of the present invention V. Description of the invention (4) FIG. 1 is a view of an intake amount control device for an engine of the present invention is an arrow 2 view of FIG. 1, and FIG. 3 is a view of FIG. Fig. 2 First, in the figure, the throttle valve line "Λ" is placed together with the engine suction hole (not shown) in a horizontal direction Ί ~ 凌, set, open and close the throttle valve 3 of this suction passage 2 The valve shaft is connected to D, channel ;, = the side wall is closely sealed with its bearing hole on the outer peripheral surface of the valve shaft 4, and the throttle drum 6 is fastened to the protrusion 5 * installed in ί 1 ^ 8 ί! &Quot; " '° " 11 ^ ^ You can open the throttle 3 to pull the operating wire f with an unillustrated cymbal member f to the throttle body i with the other end of the valve shaft 4 protruding, to connect the flange la The shape is different from the throttle body: the bottom wall of the body is connected to the connecting flange u with a plurality of bolts n to form a box shape with an open outer side, and a support core made of two is housed in the inside. The person who crosses the throttle valve body], the case ㈣ / bracket seat, bypasses the throttle valve 3 to form a bypass line connected to the suction channel 2 as shown in FIG. 2 to FIG. 5. The following components constitute the inlet hole 14, which belongs to the suction channel 2 and is inserted in the throttle body], the flow valve 3 communicates with the joint surface of the upstream flange 1a on the upstream side; the bypass hole is the orifice 1 5 , Which belongs to the suction channel 2 and penetrates the throttle valve body], from # ,, ☆ valve 3, communicates with the joint surface on the downstream side to the aforementioned connection flange, a, bypass y; iL groove 1 6 It is formed on the joint surface of the aforementioned connection flange [a], and one end is connected to the through inlet hole 14; the bypass downstream groove 17 is formed on page 8 of the aforementioned connection flange & 91109766.ptd 527468 5. Description of the invention ( 5) The joint surface, one end of which is connected to the bypass outlet hole 15; the valve chamber introduction hole 18, which penetrates the bottom wall 10 of the narrative body 10 and is formed on the support 丨 2 to connect the side The other end of the upstream groove 6; the valve chamber lead-out hole 19, which penetrates the bottom wall of the housing 10, is formed on the support 12 and is connected to the other end of the bypass downstream groove 17, and the valve chamber 20 is formed on the communication branch. The seat 12 is connected with the valve chamber introduction hole 丨 8; and the wide hole 2 丨 is formed on the same support 12 to communicate with the valve chamber 20 and the valve chamber outlet hole 19. At this time, the bypass upstream slot 16 and the bypass downstream slot 17 are shown in FIG. 3, and the inlet holes 14 and the outlet holes 15 are arranged in a sigmoid shape on the 5 side downwards. Thus, the valve chamber introduction hole 丨 8 and the valve The chamber lead-out holes j 9 are arranged close to each other, and at the same time, they are arranged above the inlet hole 4 and the outlet hole 5. In addition, the valve chamber 20 and the valve hole 21, which communicate with the valve chamber introduction hole 18 and the valve chamber lead-out hole 9 respectively, are arranged parallel to the suction path 2. In addition, the bypass upstream groove 16, the bypass downstream groove 17, and the sealing member 22 surrounding the periphery of the first and second detection holes 3 3 and 3 4 to be described later are sandwiched between the joint surfaces of the connection flange ia and the housing 10. . As shown in Fig. 5, an idle air control valve 2 5 'is provided in the valve chamber 20 to open and close the valve hole 21, and an electric actuator 26 for opening and closing the valve 25 is mounted on the support 12. At this time, the idle air control valves 25 and the actuators 26 are also arranged parallel to the air intake duct 2. A guide cylinder 27 is fixed to the mounting base 26a of the actuator 26, and a screw shaft 29 of a rotor of the actuator 26 and an actuating piston 28 slidably fitted in the guide cylinder are connected. The idle air control valve 25 has a bottomed guide hole 25a on the rear end face, and a guide cylinder 27 is fitted in this guide hole 25a. At the same time, the front end of the bottom face of the guide hole 25a abuts the operating piston 28. In addition, a valve spring 20, which is contracted in the valve chamber 20 and applies potential energy in the opening direction of the valve hole 21, is provided with dust prevention between the root of the pilot cylinder 27 and the idle air control valve 25.

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Page 9 527468 V. Description of the invention (6) ^ ------ Hood 21. Usually, a cover 43 is attached to the side wall of the casing 10, and an inspection window 42 of the actuator 26 is provided. Also in FIG. ^, A second detection hole 33 opening on the upstream side of the suction channel 2 and a second detection hole opening on the same downstream side are provided across the throttle body 1, the housing 10, and the support 12. 34 ′ are mounted on the support 丨 2 with an inhalation temperature sensor 35 that detects the temperature in the breast canal 2 through the first detection hole 33 and an anti-friction sensor 36 that increases the M through the second detection hole 34. Further, a support section 2 is provided with an influenza detection device 37 for detecting the opening degree of the throttle valve 3. & Influenza tester 37 rotates integrally with the end of the valve shaft 4 protruding into the casing 10 integrally, and the sub-37a, and detects the rotation angle of the rotor with respect to the opening degree of the Langliu 3, the stator 3 «! B composition. The rotor 37a is rotatably supported on the support 12 and is fixed to the support 12 in the closing direction of the throttle valve 3 by the fine return spring 38. ί f12 is pressed against the bottom wall side of the casing 10, and the electronic control device 40 is fitted into the opening of the plate 40a at the casing 10. The above-mentioned suction temperature sensor ㈣, H 36, throttle valve The terminals of the sensor 37 and the actuator 26 are connected to the two inverters a. The connector 4 connected to the electronic control device 40 =, the connection opening of the connector 44 is downward, so that the two-in-two is two: the opening of the housing 10 is filled to cover the electronic control device 40. Second, The effect of this embodiment will be described. At the time when the throttle valve 3 is fully closed, the electronic control device 40 judges based on the detection signals input by the self-saving flu sensor: the temperature sensor 35 and the boost sensor 36, etc. to determine when the engine is started and when it is idling rapidly , Normal idling, engine braking

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Wait for the engine running conditions, in order to get a match with the basin pair 25, you turn 2 丨 weeping 9R Idle, speed, air control wide 25: degrees, actuated to activate the 'forward or reverse rotation of the screw ^ turn the screw shaft 29. Actuating the piston 28 while advancing and retreating, a 30-bar linkage will cause the idle air control valve 25 to advance and retreat, protecting: control the opening area of the valve hole 21, and therefore control the suction flow of the bypass pipe 13. As a result, engine start, fast idling, and general idling are performed automatically and appropriately. If the throttle valve 3 is opened, the amount of intake air corresponding to its opening degree is supplied to the engine through the intake passage 2 to accelerate the engine. In this engine air intake volume control device, the connecting flange 1a formed on the throttle body 1 side is screwed to a housing 10 different from the housing flange 10, and the idle air control is housed and fixed in the housing 10 The valve 25, the actuator 26, and the mount 1 for the inhalation temperature sensor 3 5, the boost sensor 36, and the flu-saving sensor 37 are capable of processing the throttle body 1 and the casing at the same time. The production of body 丨 〇, support 12 and sensor assembly can greatly contribute to the improvement of productivity. Since the bypass pipe 1 3-a part of the bypass upstream groove 16 and the bypass downstream groove 17 are formed on the joint surface of the connecting flange 丨 a that is engaged with the bottom wall of the housing 10, these bypass grooves 16 and 17 can be formed at the same time as the connecting flange 1 a is formed, which can further improve the productivity. Since the substrate 40a of the electronic control device 40 is positioned and fixed in the housing 10, the actuator 2 6, the inhalation temperature sensor 3 5, the booster sensor 3 6 and the flu-saving sensor 3 7 It is connected to this substrate 40a, so the actuator 26, the inspiratory temperature sensor 35, the boost sensor 36, the flu-saving sensor 37, and the electronic control device 40 can be a unit, also Can improve its assemblability 'At the same time,

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The connection portion can be more surely protected by the housing 10. Furthermore, since the housing 10 and the support 2 are made of synthetic resin, they have different heat insulation properties, and can protect the idle air control valve 25 and the sensors from the engine's a 燮. J thermal image, because the idle air control valve 25 and the actuator 26 are arranged parallel to the suction channel 2 of the throttle valve j, the idle air control valve 25 and the actuator 26 are arranged along the suction, which can reduce the protrusion The amount of protrusion to the outside of the connecting flange la can effectively reduce the size of the housing and even the entire surface of the air intake control device. In the bypass pipe 13, the valve chamber 20 and the valve hole 21 are connected to the bypass upstream groove 6 and the bypass downstream groove 17 through the valve chamber introduction hole 18 and the valve chamber outlet hole 19, respectively. Therefore, even if foreign matter such as dust enters the valve chamber introduction hole 18 or valve chamber outlet hole 19 from the suction airway 2, it will not rise to the valve chamber 20 and the valve hole 21, which can prevent foreign matter from accumulating in the valve chamber 2 0 and阀 孔 21。 Valve hole 21. The present invention is not limited to the above-mentioned embodiments, and various design changes can be made without departing from the gist thereof. For example, the bypass upstream groove 6 and the bypass downstream groove 7 may be formed on the joint surface side where the casing 10 and the connection flange 1 are joined. The support 12 may be integrally formed with the casing 10. Advantageous Effects of Invention As described above, according to the first feature of the present invention, since it is an air intake control device for an engine including the following elements; a throttle body is provided with a throttle valve in an intake passage connected to an intake hole of the engine; ; Bypass pipe, which bypasses the throttle valve and connects to the suction rolling path; Idle air control valve, which controls the opening degree of the bypass pipe when the throttle valve is fully closed; Actuator, whose opening and closing drive the rapid air control Interval 'and an influenza detector, which detects the opening degree of the throttle valve;

91109766.ptd Page 12 527468 V. Description of the invention (9) The valve car of the Langliu valve consists of a housing with one end handle, ^. ^ ^, ☆ This housing is equipped with a different body joint flu detector, so, Simultaneous production of actuators and body and sensor assemblies can be performed: == 工 and bypass downstream grooves connected downstream of the suction side of the shell = Shi You; Cao and the joint surface with the same shell At least Αg and 70% of the throttle body and at least one of them are described, so that the throttle body and the shell can promote production into bypass upstream grooves and bypass downstream grooves. The fourth feature is that because the positioning and fixing of the electronic dipper base and the aforementioned casing are connected to the bow and the flu-saving tester, the actuator, the flu-saving tester, and the electronic control device can be made assembling bodies more early. Protect its connections. Fork-simultaneous' misleading grease invention's fifth feature 'because the aforementioned casing is a synthetic tree gamma control valve, actuator, and flu-saving detector' to protect it from the heat of the engine. 2 6th and 6th aspects of the invention 7 feature, because it is parallel to the aforementioned idling air control valve and actuator, the idling air control device is arranged along the air intake duct, which can reduce the amount of its protrusion to the outside of the throttle body, which can effectively seek the shell Miniaturization of the body and even the suction body. King Li Li Yi Zhi

£, Description of the invention (〖〇) --------- _ Niu Guan Yi Lin = Also according to the eighth feature of the present invention, since the valve belonging to the above-mentioned bypass gas is received by the two chirps to house the idle air control valve The chamber is connected to the bypass upstream groove and the bypass downstream groove through the open and closed valve holes of the idle space. Therefore, even if foreign matter such as dust enters the bypass upstream groove and the downstream groove from the suction channel, Does not lift to the valve chamber and valve hole, can be in the valve chamber and valve hole. ”Prevent foreign matter from accumulating 1 la 2 3 4 5, 6, 7 8 10 11 12 Throttle valve body connection flange Suction throttle Throttle valve shaft 5 Sealing member Throttle drum stays as wire return spring housing Bolt support 13 Bypass pipe 14 Bypass inlet hole 15 Bypass outlet hole 16 Bypass upstream groove 17 Bypass downstream groove 527468 V. Description of the invention (11) 18 Valve chamber inlet hole 19 Valve chamber outlet hole 20 Valve chamber 21 Valve hole 22 Seal Component 25 Idling air control valve 25a Guide hole 26 Actuator 26a Mounting base 27 Red guide 28 Actuating piston 29 Screw shaft 30 Valve spring 31 Dust cover 33 First detection hole 34 Second detection hole 35 Intake temperature sensor 36 Increase Pressure sensor 37 Λ / Γ is flu detector 37a rotor 37b stator 38 return spring 40 electronic control device 40a substrate

91109766.ptd Page 15 527468 V. Description of the invention (12) 42 Inspection window 43 Cover 44 Coupling 1111111 91109766.ptd Page 16 527468 Brief description of the diagram Figure 1 is a longitudinal section of the intake control device for the engine of the present invention Floor plan. FIG. 2 is a view of arrow 2 of FIG. 1. FIG. 3 is a sectional view taken along the line 3-3 in FIG. 1. FIG. 4 is an enlarged sectional view taken along the line 4-4 in FIG. 3. FIG. 5 is an enlarged cross-sectional view taken along line 5-5 in FIG. 2.

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Claims (1)

527468 6. Scope of patent application 1 • An air intake volume control device for an engine is provided with: a throttle body (1), which is provided with a throttle valve (3) in an intake passage (2) connected to an intake hole of the engine ); A bypass pipe (13), which bypasses the throttle valve (3) and is connected to the suction duct (2); an idle air control valve (2 5), which controls the bypass valve when the throttle valve (3) is fully closed The opening of the through pipe (13); the actuator (26), which opens and closes and drives the idle air control valve (2 5); and the flu-saving detector (37), which detects the opening of the throttle valve (3) It is characterized in that a housing (10) different from the body (1) is mounted on the throttle body (1) on one end side of the valve shaft (4) of the throttle (3), and the housing (1) 〇) is provided with the aforementioned idle air control valve (25), actuator (26) and flu-saving detector (37). 2 · As for the air intake control device for the engine in item 1 of the scope of the patent application, a part of the bypass pipe (13) that is connected to the upstream side of the intake duct (2) upstream side ( 1 6) and a bypass downstream groove (17) connected to the downstream side of the same suction duct (2) are formed in at least one of the joint surfaces of the throttle body (1) and the casing (10). 3. The engine air intake control device according to item 1 of the scope of patent application, wherein the substrate (40a) of the electronic control device (40) is fixed to the aforementioned casing (10) and connected to the substrate (40a) ) On the aforementioned actuator (26) and flu-saving detector (37). 4 · The engine air intake control device according to item 2 of the scope of patent application, wherein the substrate (40a) of the electronic control device (40) is positioned and fixed to the aforementioned casing (10) and connected to the substrate (40). a) At the aforementioned actuator (26) and influenza tester (37). 91109766.ptd Page 18 527468 6. Scope of patent application 5. For the engine air intake control device for any one of the items 1 to 4 of the scope of patent application, the casing (10) is made of synthetic resin. 6. The intake air volume control device for an engine according to any one of claims 1 to 4, wherein the idle air control valve (25) and the actuator (26) are arranged in parallel to the intake passage. 7. For the air intake control device for an engine as described in the fifth item of the patent application, the idle air control valve (2 5) and the actuator (26) are arranged in parallel to the air intake passage (2). 8. As for the air intake control device for the engine in item 2 of the scope of patent application, a part of the bypass pipe (1 3) will be contained in the valve chamber (20) of the idle air control valve (25). And the valve hole (2 1) opened and closed by the idle air control valve (25) is connected to the upper ends of the bypass upstream groove (16) and the bypass downstream groove (17). 91109766.ptd Page 19