Double-air-inlet system of engine

Abstract

The utility model provides a double-air-inlet system of an engine. The double-air-inlet system of the engine comprises a throttle body, a first valve plate, a second valve plate, a rotating shaft and a driving mechanism. The throttle body is provided with a first air inlet channel and a second air inlet channel which are arranged side by side. The first valve plate is arranged in the first air inlet channel, and the second valve plate is arranged in the second air inlet channel. The rotating shaft is rotatably arranged on the throttle valve and connected with the first valve plate and the second valve plate. The driving mechanism drives the rotating shaft to rotate. The first air inlet channel and the second air inlet channel are used for conveying mixed gas of fuel gas and air to two compression cylinders of the engine correspondingly. In the technology, the rotating shaft is driven by the driving mechanism to rotate, so that the first valve plate and the second valve plate respectively rotate in the first air inlet channel and the second air inlet channel, the air inflow of the first air inlet channel and the air inflow of the second air inlet channel are synchronously controlled, and the efficiency of two compression cylinder working chambers of an engine is consistent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, concretely relates to a double intake system of engine. BACKGROUND

[0002] The double cylinder engine is widely used, which has two compression cylinders, and the corresponding intake system has two intake pipes respectively communicating with the two compression cylinders, and the mixed gas of fuel gas and air enters the two compression cylinders respectively through different intake pipes to work.

[0003] It is found in practice that the intake amount entering the two compression cylinders from the two intake pipes is often inconsistent, which leads to the inconsistent running power of the two compression cylinders. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a double intake system of engine, so that one or more of the above problems and other problems in the prior art can be solved or at least alleviated.

[0005] The utility model provides a double intake system of engine, comprising:

[0006] The throttle body is provided with side -by -side first air inlet and second air inlet;

[0007] The first valve sheet is arranged in the first air inlet, and the end surface thereof is matched with the cross section of the first air inlet;

[0008] The second valve sheet is arranged in the second air inlet, and the end surface thereof is matched with the cross section of the second air inlet;

[0009] The rotating shaft is rotatably arranged on the throttle, and is connected with the first valve sheet and the second valve sheet respectively; and

[0010] The driving mechanism is used to drive the rotation of the rotating shaft.

[0011] The first air inlet and the second air inlet are used to deliver the mixed gas of fuel gas and air to the two compression cylinders of the engine.

[0012] Preferably, the utility model further comprises an air inlet device, the first air inlet and the second air inlet have air inlet ends and air outlet ends, the first valve sheet is arranged at the air outlet end of the first air inlet, the second valve sheet is arranged at the air outlet end of the second air inlet, the air inlet device is used to input air to the air inlet end of the first air inlet and the air inlet end of the second air inlet, the throttle body is further provided with a first fuel gas channel and a second fuel gas channel, the first fuel gas channel communicates with the first air inlet, and the second fuel gas channel communicates with the second air inlet.

[0013] Preferably, the air intake device comprises an air intake shell; the air intake shell is connected with the throttle body; the air intake shell has an air intake cavity with two open ends; one end of the air intake cavity is communicated with the first air intake passage and the second air intake passage.

[0014] Preferably, the air intake cavity comprises:

[0015] an air intake section; and

[0016] an air outlet section communicated with the air intake section, one end of the air outlet section away from the air intake section is communicated with the air inlet end of the first air intake passage and the air inlet end of the second air intake passage;

[0017] The cross-sectional area of the air outlet section is greater than that of the air intake section.

[0018] Preferably, the lower end of the air intake section is communicated with the air outlet section.

[0019] Preferably, further comprising a gas shell connected with the throttle body, the gas shell has a first gas cavity and a second gas cavity with downward opening; one end of the first gas passage away from the first air intake passage is communicated with the first gas cavity; one end of the second gas passage away from the second air intake passage is communicated with the second gas cavity; the first gas cavity is circumscribed by a first gas intake pipe; the second gas cavity is circumscribed by a second gas intake pipe.

[0020] Preferably, the driving mechanism comprises a motor connected with the throttle body, and an output end of the motor is connected with the rotating shaft.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] In the utility model technical field, the rotating shaft is driven to rotate by the driving mechanism, the first valve plate and the second valve plate are rotated in the first air intake passage and the second air intake passage respectively, and then the air intake amount of the first air intake passage and the second air intake passage is synchronously controlled, so that the working chamber efficiency of two compression cylinders of the engine is consistent. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0024] Figure 1 It is a perspective view of an engine double air intake system in an embodiment of the utility model;

[0025] Figure 2 is an exploded view; Figure 1

[0026] Figure 3 is another perspective view of the throttle body; Figure 2

[0027] Figure 4 is another perspective view of the throttle body. Figure 2

[0028] Reference signs:

[0029] 10, throttle body; 11, first air inlet; 111, air inlet end; 112, air outlet end; 12, second air inlet; 13, first gas inlet; 14, second gas inlet;

[0030] 20, first valve plate;

[0031] 30, second valve plate;

[0032] 40, rotating shaft;

[0033] 50, air inlet housing; 51, air inlet cavity; 511, air inlet section; 512, air outlet section;

[0034] 60, gas inlet housing; 61, first gas inlet cavity; 62, second gas inlet cavity; 63, first gas inlet pipe; 64, second gas inlet pipe;

[0035] 70, driving mechanism. DETAILED DESCRIPTION

[0036] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0037] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the present application belongs.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.​​​

[0039] In addition, the terms "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the utility model, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0040] In this application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In this application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] Referring to Figures 1 to 4 The embodiment provides a double intake system of engine, which comprises a throttle body 10, a first valve piece 20, a second valve piece 30, a rotating shaft 40 and a driving mechanism 70.

[0043] The throttle body 10 is provided with a first air inlet 11 and a second air inlet 12 side by side, and the mixed gas and air enter the first air inlet 11 and the second air inlet 12. The first valve piece 20 is arranged in the first air inlet 11, the end face of the first valve piece 20 is matched with the cross section of the first air inlet 11, specifically, the cross section of the first air inlet 11 is circular, and the first valve piece 20 is a circular piece. The second valve piece 30 is arranged in the second air inlet 12, and the end face of the second valve piece 30 is matched with the cross section of the second air inlet 12.

[0044] The rotation shaft 40 is rotatably arranged on the throttle valve, and is connected with the first valve plate 20 and the second valve plate 30 respectively. The axis of the rotation shaft 40 is perpendicular to the center line of the first intake passage 11 and the center line of the second intake passage 12. The driving mechanism 70 is used to drive the rotation shaft 40 to rotate. The first intake passage 11 and the second intake passage 12 are used to respectively deliver the mixed gas of fuel and air to the two compression cylinders of the engine. Specifically, the first intake passage 11 and the second intake passage 12 are respectively communicated with the two compression cylinders of the engine.

[0045] In the embodiment, the rotation shaft 40 is driven to rotate by the driving mechanism 70, so that the first valve plate 20 and the second valve plate 30 are respectively rotated in the first intake passage 11 and the second intake passage 12, and the intake amount of the first intake passage 11 and the second intake passage 12 is synchronously controlled, so that the working efficiency of the two compression cylinders of the engine is consistent.

[0046] In one embodiment, the engine double intake system further comprises an air intake device. The first intake passage 11 and the second intake passage 12 each have an air intake end 111 and an air outlet end 112. The first valve plate 20 is arranged at the air outlet end 112 of the first intake passage 11. The second valve plate 30 is arranged at the air outlet end 112 of the second intake passage 12. The air intake device is used to input air into the air intake end 111 of the first intake passage 11 and the air intake end 111 of the second intake passage 12. The throttle valve body 10 is also provided with a first fuel passage 13 and a second fuel passage 14. The first fuel passage 13 is communicated with the first intake passage 11; the second fuel passage 14 is communicated with the second intake passage 12. The first fuel passage 13 and the second fuel passage 14 respectively input fuel or gasoline into the first intake passage 11 and the second intake passage 12.

[0047] In the embodiment, the air is input from the air intake end 111 of the first intake passage 11 and the second intake passage 12 by the air delivery mechanism. The fuel is input into the first intake passage 11 and the second intake passage 12 through the first fuel passage 13 and the second fuel passage 14 respectively, and is mixed with the air, and then enters the two compression cylinders of the engine through the first valve plate 20 and the second valve plate 30.

[0048] In one embodiment, the air intake device comprises an air intake shell 50; the air intake shell 50 is connected with the throttle valve body 10; the air intake shell 50 has an air intake cavity 51 with two open ends; one end of the air intake cavity 51 is communicated with the first intake passage 11 and the second intake passage 12.

[0049] In the embodiment, the first gas passage 13 and the second gas passage 14 each input the gas to the first gas inlet passage 11 and the second gas inlet passage 12 and mix the gas with air therein. The gas and air in the first gas inlet passage 11 and the second gas inlet passage 12 are mixed at the gas inlet cavity 51, which can balance the amount of gas on both sides of the first gas inlet passage 11 and the second gas inlet passage 12, so that the mixed gas on both sides produces the same output power when entering different compression cylinders of the engine; on the other hand, the mixed gas in the first gas inlet passage 11 and the second gas inlet passage 12 can also be mixed evenly, so as to further make the subsequent mixed gas enter different compression cylinders to produce the same output power.

[0050] In one embodiment, the gas inlet cavity 51 includes a gas inlet section 511 and a gas outlet section 512.

[0051] The gas outlet section 512 communicates with the gas inlet section 511, and the end of the gas outlet section 512 away from the gas inlet section 511 simultaneously communicates with the gas inlet end 111 of the first gas inlet passage 11 and the gas inlet end 111 of the second gas inlet passage 12. The cross-sectional area of the gas outlet section 512 is greater than that of the gas inlet section 511. Specifically, the gas inlet section 511 communicates with an air filter, and air flows from the gas inlet section 511 to the gas outlet section 512.

[0052] In the embodiment, during the process of air flowing from the gas inlet section 511 to the gas outlet section 512, the air is diffused due to the expansion of the gas outlet section 512, and is mixed with the gas entering the gas outlet section 512, so that the air and the gas are mixed more evenly.

[0053] In one embodiment, the lower end of the gas inlet section 511 communicates with the gas outlet section 512.

[0054] In the embodiment, the gas inlet section 511 is vertically arranged, and the gas outlet section 512 is transversely arranged. The gas in the first gas inlet passage 11 and the second gas inlet passage 12 is mixed with air therein and is also mixed with air at the gas outlet section 512, and does not overflow from the gas inlet section 511.

[0055] In one embodiment, the engine double gas inlet system further includes a gas housing 60 connected with the throttle body 10, and the gas housing 60 has a first gas cavity 61 and a second gas cavity 62 with openings downward. The end of the first gas passage 13 away from the first gas inlet passage 11 communicates with the first gas cavity 61; the end of the second gas passage 14 away from the second gas inlet passage 12 communicates with the second gas cavity 62. The first gas cavity 61 is externally connected with a first gas inlet pipe 63; and the second gas cavity 62 is externally connected with a second gas inlet pipe 64.

[0056] In the embodiment, the gas enters into the first gas cavity 61 and the second gas cavity 62 through the first gas inlet pipe 63 and the second gas inlet pipe 64 respectively, and then the gas enters into the first inlet channel 11 and the second inlet channel 12 from the first gas cavity 61 and the second gas cavity 62. The gas is accumulated in the first gas cavity 61 and the second gas cavity 62, so that the amount of gas entering into the first inlet channel 11 and the second inlet channel 12 is stable, which is convenient for the subsequent gas and air to be mixed uniformly, so that the engine runs smoothly.

[0057] In one embodiment, the driving mechanism 70 comprises a motor, the motor is connected with the throttle body 10, and an output end of the motor is connected with the rotating shaft 40. The motor can be a stepping motor.

[0058] In the specification of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail, so as not to obscure the understanding of the specification.

[0059] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not limit them; although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should be covered in the scope of the claims and the specification of the utility model.

Claims

1. An engine dual intake system characterized by, The engine double intake system comprises: a throttle body (10) having a first intake passage (11) and a second intake passage (12) arranged side by side; a first valve plate (20) arranged in the first intake passage (11) and having an end surface matching a cross section of the first intake passage (11); a second valve plate (30) arranged in the second intake passage (12) and having an end surface matching a cross section of the second intake passage (12); a rotating shaft (40) rotatably arranged on the throttle body and connected with the first valve plate (20) and the second valve plate (30) respectively; and a driving mechanism (70) for driving the rotating shaft (40) to rotate. The first intake passage (11) and the second intake passage (12) are respectively used for delivering mixed gas of fuel gas and air to two compression cylinders of an engine. The engine double intake system further comprises an air intake device; the first intake passage (11) and the second intake passage (12) each have an air intake end (111) and an air outlet end (112); the first valve plate (20) is arranged at the air outlet end (112) of the first intake passage (11); the second valve plate (30) is arranged at the air outlet end (112) of the second intake passage (12); the air intake device is used for inputting air to the air intake end (111) of the first intake passage (11) and the air intake end (111) of the second intake passage (12); the throttle body (10) further has a first fuel gas passage (13) and a second fuel gas passage (14); the first fuel gas passage (13) is in communication with the first intake passage (11); the second fuel gas passage (14) is in communication with the second intake passage (12); The air intake device comprises an air intake housing (50); the air intake housing (50) is connected with the throttle body (10); the air intake housing (50) has an air intake cavity (51) with two open ends; one end of the air intake cavity (51) is in communication with the first intake passage (11) and the second intake passage (12); The air intake cavity (51) comprises: an air intake section (511); and an air outlet section (512) in communication with the air intake section (511) and having an end away from the air intake section (511) in communication with the air intake end (111) of the first intake passage (11) and the air intake end (111) of the second intake passage (12); A cross section of the air outlet section (512) is larger than that of the air intake section (511). The lower end of the air intake section (511) is in communication with the air outlet section (512).

2. An engine dual intake system as claimed in claim 1, wherein, ​ 3. An engine dual induction system as claimed in claim 2, wherein Also include gas shell (60), the gas shell (60) is connected with the throttle body (10), the gas shell (60) has the first gas cavity (61) and second gas cavity (62) of opening downward;The first gas channel (13) is away from the first gas cavity (61) of one end of the first air inlet (11) with the first gas channel (13) is communicated;The second gas channel (14) is away from the second gas cavity (62) of one end of the second air inlet (12) with the second gas channel (14) is communicated;The first gas cavity (61) circumscribes the first gas inlet pipe (63);The second gas cavity (62) circumscribes the second gas inlet pipe (64).

4. An engine dual induction system as claimed in claim 3, wherein The drive mechanism (70) includes a motor;The motor is connected with the throttle body (10);The output end of the motor is connected with the rotating shaft (40).

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