Double-cavity supply system with air entering from two ends

Abstract

The utility model provides a two-end gas inlet double-cavity supply system which comprises a body and two cavities arranged in the body, a throttle valve is arranged in each cavity, the body is provided with two fuel oil channels and two fuel gas channels, each cavity is correspondingly communicated with one fuel oil channel and one fuel gas channel, and the two cavities are communicated with the two fuel oil channels and the two fuel gas channels. A gas inlet upper cover is arranged at the upper end of the body, and two gas inlet pipes are symmetrically arranged on the two sides of the gas inlet upper cover and correspondingly communicated with the two gas channels respectively; each fuel gas channel comprises a fuel gas main channel and a fuel gas idling channel; the body is provided with an oil inlet elbow which is communicated with the two fuel oil channels; each fuel oil channel comprises a fuel oil main channel and a fuel oil idling channel. According to the fuel gas and fuel oil supply system, switching between fuel gas and fuel oil can be achieved through one supply system, convenience is improved, the gas supply hole and the transition hole are formed, the operation requirements of the fuel gas and the fuel oil during idling of an engine are met, and normal operation of the engine is guaranteed.

Description

Technical Field

[0001] The utility model relates to a supply system, in particular to a double-chamber supply system with two-end air intake. Background Art

[0002] In the prior art, sometimes two supply systems are required for an engine to switch between fuel and gas, which causes inconvenience. Moreover, in the prior art, when the engine is idling, since the throttle opening is small or even closed, the fuel or gas entering cannot meet the operation requirements, affecting the normal operation of the engine. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a double-chamber supply system with two-end air intake, which solves the inconvenience of using two supply systems to switch between fuel and gas in the prior art.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A double-chamber supply system with two-end air intake includes a body and two chambers arranged in the body. A throttle is arranged in each chamber. The body is provided with two fuel channels and two gas channels. Each chamber is correspondingly communicated with one of the fuel channels and one of the gas channels. An air intake upper cover is arranged at the upper end of the body. Two air inlet pipes are symmetrically arranged on both sides of the air intake upper cover and are respectively correspondingly communicated with the two gas channels. Each gas channel includes a main gas channel and an idling gas channel, wherein: one end of the main gas channel is communicated with the corresponding air inlet pipe, and the other end is communicated with the air inlet end of the corresponding throttle; one end of the idling gas channel is communicated with the main gas channel, and the other end is communicated with the air outlet end of the corresponding throttle through a plurality of air supplement holes. The body is provided with an oil inlet elbow, which is communicated with the two fuel channels. Each fuel channel includes a main fuel channel and an idling fuel channel, wherein: one end of the main fuel channel is communicated with the oil inlet elbow, and the other end is communicated with the air inlet end of the corresponding throttle; one end of the idling fuel channel is communicated with the main fuel channel, and the other end is communicated with the air outlet end of the corresponding throttle through a plurality of transition holes.

[0006] A choke valve is arranged on one side of each chamber different from the throttle.

[0007] A throttle stepping motor is installed on one side of the body to control the opening of the throttle through a throttle shaft component;

[0008] A choke valve stepping motor is installed on one side of the body to control the opening of the choke valve through a choke valve shaft component.

[0009] The main gas passage includes a gas metering orifice and a gas nozzle, wherein: one end of the gas metering orifice communicates with the intake pipe, and the other end communicates with the gas nozzle; the other end of the gas nozzle communicates with the chamber.

[0010] The main fuel passage is provided with a main fuel metering orifice, a foam tube and a fuel nozzle that are connected in sequence, wherein: the fuel inlet end of the main fuel metering orifice communicates with the inlet elbow; the foam tube is used for mixing fuel and air; the fuel outlet end of the fuel nozzle communicates with the chamber; the other end of the fuel idle speed passage is provided with a fuel idle speed metering orifice that communicates with the transition hole.

[0011] An air inlet pipe is provided on the body, including a first air inlet pipe and a second air inlet pipe, wherein: the first air inlet pipe communicates with the foam tube; the second air inlet pipe communicates with the fuel idle speed metering orifice.

[0012] The first air inlet pipe is provided with a first air metering orifice, and the second air inlet pipe is provided with a second air metering orifice.

[0013] The first air inlet pipe is arranged below the second air inlet pipe, and the first air inlet pipe is arranged to incline downward, and the second air inlet pipe is arranged horizontally.

[0014] The intake upper cover is of a butterfly structure.

[0015] From the above solutions, the advantages of the present utility model are as follows:

[0016] (1) An intake pipe and an inlet elbow with two ends for intake are simultaneously arranged on the body, and the switching between gas and fuel can be realized by using one supply system, which improves convenience. Moreover, by arranging the air supplement hole and the transition hole, the operating requirements of gas and fuel during engine idling are met, ensuring the normal operation of the engine.

[0017] (2) The opening degrees of the throttle valve and the choke valve are controlled by a stepper motor, making the opening degree adjustment more accurate, rapid and reliable.

[0018] (3) The fuel and air are mixed by using the foam tube and then supplied to the engine, which can effectively atomize the fuel and mix it with air, improving the combustion efficiency.

[0019] (4) The intake upper cover is designed into a butterfly structure, which improves the stability and strength while adding an artistic sense. Description of the Drawings

[0020] Figure 1 is a perspective view of the double-chamber supply system with double-end intake of the present utility model;

[0021] Figure 2 is Figure 1 the rear view of;

[0022] Figure 3 is the left view of Figure 1 ;

[0023] Figure 4 is the top view of Figure 1 ;

[0024] Figure 5 is the sectional view taken along line A-A in Figure 2 ;

[0025] Figure 6 is the sectional view taken along line B-B in Figure 4 ;

[0026] Figure 7 is the sectional view taken along line C-C in Figure 4 ;

[0027] Figure 8 is the sectional view taken along line D-D in Figure 2 ;

[0028] Figure 9 is the sectional view taken along line E-E in Figure 2 ;

[0029] Figure 10 is the perspective view of the throttle step motor 15;

[0030] Figure 11 is the perspective view of the choke step motor 16;

[0031] Figure 12 is the perspective view of the throttle shaft component 132;

[0032] Figure 13 is the perspective view of the choke shaft component 142;

[0033] Figure 14 is the perspective view of the intake upper cover 17;

[0034] Among them, the reference numerals:

[0035] 1 - dual - chamber supply system with dual - end intake;

[0036] 10 - body;

[0037] 100 - L chamber;

[0038] 101 - R chamber;

[0039] 11 - float chamber;

[0040] 12 - solenoid valve:

[0041] 13 - throttle;

[0042] 132 - throttle shaft component;

[0043] 14 - Choke

[0044] 142 - Choke shaft component

[0045] 15 - Throttle stepper motor

[0046] 16 - Choke stepper motor

[0047] 17 - Upper intake cover

[0048] 170 - L - chamber intake pipe

[0049] 171 - R - chamber intake pipe

[0050] 172 - L - chamber main gas passage

[0051] 173 - L - chamber idle gas passage

[0052] 174 - L - chamber air bleed hole

[0053] 175 - R - chamber main gas passage

[0054] 176 - R - chamber idle gas passage

[0055] 177 - R - chamber air bleed hole

[0056] 18 - Fuel inlet elbow

[0057] 180 - L - chamber main fuel passage

[0058] 181 - L - chamber idle fuel passage

[0059] 1811 - L - chamber transition hole

[0060] 182 - R - chamber main fuel passage

[0061] 183 - R - chamber idle fuel passage

[0062] 1831 - R - chamber transition hole

[0063] 19 - Air inlet pipe

[0064] 190 - First air inlet pipe

[0065] 191 - Second air inlet pipe Detailed implementation mode

[0066] The technical solution of the present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and efficacy of the present utility model, but it is not intended to limit the scope of protection of the appended claims of the present utility model.

[0067] References to "embodiment", "another embodiment", "this embodiment", etc. in the specification mean that the described embodiment may include certain features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. In addition, such expressions do not refer to the same embodiment. Further, when describing specific features, structures, or characteristics in combination with an embodiment, it has been shown that combining such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art, whether or not explicitly described.

[0068] Certain terms are used in the specification and subsequent claims to refer to specific components or parts. Those of ordinary skill in the art should understand that a technical user or manufacturer may use different nouns or terms to refer to the same component or part. The specification and claims do not use the difference in name as a way to distinguish components or parts, but rather use the difference in function of the components or parts as the criterion for distinction. The terms "comprising" and "including" mentioned throughout the specification and claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the term "connected" herein includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0069] It should be noted that in the description of the present utility model, the orientation or positional relationship or parameters indicated by terms such as "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description content, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0070] As Figures 1 to 14 shown, an embodiment of the present utility model provides a two-end intake double-chamber supply system 1, which includes a body 10, a float chamber 11, a solenoid valve 12, a throttle valve 13, a choke valve 14, a throttle stepping motor 15, and a choke valve stepping motor 16. Two chambers are provided in the body 10, specifically an L chamber 100 and an R chamber 101. An L chamber throttle valve 130 is provided in the L chamber 100, and an R chamber throttle valve 131 is provided in the R chamber 101.

[0071] In this embodiment, the body 10 is provided with two fuel channels and two gas channels. Each chamber is correspondingly connected to a fuel channel and a gas channel. An air intake upper cover 17 is arranged at the upper end of the body 10. Two air inlet pipes are symmetrically arranged on both sides of the air intake upper cover 170 and are respectively correspondingly connected to the two gas channels. Each gas channel includes a main gas channel and an idle gas channel, where: one end of the main gas channel is connected to the corresponding air inlet pipe, and the other end is connected to the air intake end of the corresponding throttle valve; one end of the idle gas channel is connected to the main gas channel, and the other end is connected to the air outlet end of the corresponding throttle valve through a plurality of air supplement holes.

[0072] Specifically, an air intake upper cover 17 with a butterfly structure is arranged at the upper end of the body 10. The two sides of the air intake upper cover 17 are symmetrically arranged as an L-chamber air inlet pipe 170 and an R-chamber air inlet pipe 171. The L-chamber air inlet pipe 170 is connected to the L-chamber 100 through an L-chamber gas channel, and the R-chamber air inlet pipe 171 is connected to the R-chamber 101 through an R-chamber gas channel. Wherein: the L-chamber gas channel includes an L-chamber main gas channel 172 and an L-chamber idle gas channel 173. The L-chamber main gas channel 172 includes an L-chamber gas metering orifice 1720 and an L-chamber gas nozzle 1721 connected in sequence. The L-chamber gas metering orifice 1720 controls the amount of gas entering the L-chamber main gas channel 172, and the gas is introduced into the L-chamber 100 through the L-chamber gas nozzle 1721; one end of the L-chamber idle gas channel 173 is connected to the L-chamber main gas channel 172 (not shown), and the other end is connected to the air outlet end of the L-chamber throttle valve 130 (not shown in the figure) through an L-chamber air supplement hole 174, which is used to provide sufficient gas to the engine in the idle state; the R-chamber gas channel includes an R-chamber main gas channel 175 and an R-chamber idle gas channel 176. The R-chamber main gas channel 175 includes an R-chamber gas metering orifice 1750 and an R-chamber gas nozzle 1751 connected in sequence. The R-chamber gas metering orifice 1750 controls the amount of gas entering the R-chamber main gas channel 175, and the gas is introduced into the R-chamber 101 through the R-chamber gas nozzle 1751; one end of the R-chamber idle gas channel 176 is connected to the R-chamber main gas channel 175 (not shown), and the other end is connected to the air outlet end of the R-chamber throttle valve 131 (not shown in the figure) through an R-chamber air supplement hole 177, which is used to provide sufficient gas to the engine in the idle state.

[0073] In this embodiment, the body 10 is provided with an oil inlet elbow 18, which is connected to both fuel channels. Each fuel channel includes a main fuel channel and an idle fuel channel, where: one end of the main fuel channel is connected to the oil inlet elbow 18, and the other end is connected to the air intake end of the corresponding throttle valve 13; one end of the idle fuel channel is connected to the main fuel channel, and the other end is connected to the air outlet end of the corresponding throttle valve 13 through a plurality of transition holes.

[0074] Specifically, the fuel passage includes an L - chamber fuel passage and an R - chamber fuel passage (not shown in the figure). The L - chamber fuel passage includes an L - chamber main fuel passage 180 and an L - chamber idle fuel passage 181. The L - chamber main fuel passage 180 is provided with an L - chamber main fuel orifice 1800, an L - chamber foam tube 1801, and an L - chamber fuel nozzle 1802 that are connected in sequence. The inlet end of the L - chamber main fuel orifice 1800 is connected to the inlet elbow 18. The L - chamber foam tube 1801 is used for the mixing of fuel and air. The outlet end of the L - chamber fuel nozzle 1802 is connected to the L - chamber 100. The L - chamber idle fuel passage 181 is provided with an L - chamber idle fuel orifice 1810 and is connected to the outlet end of the L - chamber throttle valve 130 (not shown in the figure) through a plurality of L - chamber transition holes 1811. The R - chamber fuel passage includes an R - chamber main fuel passage 182 and an R - chamber idle fuel passage 183. The R - chamber main fuel passage 182 is provided with an R - chamber main fuel orifice 1820, an R - chamber foam tube 1821, and an R - chamber fuel nozzle 1822 that are connected in sequence. The inlet end of the R - chamber main fuel orifice 1820 is connected to the inlet elbow 18. The R - chamber foam tube 1821 is used for the mixing of fuel and air. The outlet end of the R - chamber fuel nozzle 1822 is connected to the R - chamber 101. The R - chamber idle fuel passage 183 is provided with an R - chamber idle fuel orifice 1830 and is connected to the outlet end of the R - chamber throttle valve 131 (not shown in the figure) through a plurality of R - chamber transition holes 1831.

[0075] In this embodiment, a throttle stepping motor 15 is installed on one side of the body 10, and the opening degree of the throttle valve 13 is controlled through the throttle shaft component 132. Specifically, the L - chamber throttle valve 130 and the R - chamber throttle valve 131 are installed on the throttle shaft component 132. The first plug 150 of the throttle stepping motor 15 is inserted into the first groove 1320 of the throttle shaft component 132. The throttle stepping motor 15 controls the opening degrees of the L - chamber throttle valve 130 and the R - chamber throttle valve 131 by driving the throttle shaft component 132.

[0076] In this embodiment, a choke valve 14 is provided on the side of each chamber different from the throttle valve 13. Specifically, the choke valve 14 includes an L - chamber choke valve 140 and an R - chamber choke valve 141. The L - chamber choke valve 140 and the R - chamber choke valve 141 are connected to the throttle stepping motor 16 through the choke valve shaft component 142. The throttle stepping motor 16 is installed on one side of the body 10. The second plug 160 of the choke valve stepping motor 16 is inserted into the second groove 1420 of the choke valve shaft component 142. The choke valve stepping motor 16 controls the opening degrees of the L - chamber choke valve 140 and the R - chamber choke valve 141 by driving the choke valve shaft component 142.

[0077] In this embodiment, an air inlet pipe 19 is provided on the body 10. The air inlet pipe 19 includes a first air inlet pipe 190 and a second air inlet pipe 191, where: the first air inlet pipe 190 is communicated with a foam pipe (including an L - cavity foam pipe 1801 and an R - cavity foam pipe 1821); the second air inlet pipe 191 is communicated with a fuel idle jet (including an L - cavity fuel idle jet 1810 and an R - cavity fuel idle jet 1830). A first air jet 1900 is provided on the first air inlet pipe 190, and a second air jet 1910 is provided on the second air inlet pipe 191. The first air jet 1900 can control the air volume entering the first air inlet pipe 190, and the second air jet 1910 can control the air volume entering the second air inlet pipe 191.

[0078] The first air inlet pipe 190 is arranged below the second air inlet pipe 191, and the first air inlet pipe 190 is arranged obliquely downward, while the second air inlet pipe 191 is arranged horizontally.

[0079] Specifically, as Figure 2 and Figure 7 shown, the first air inlet pipe 190 includes an L - cavity first air inlet pipe 1901 and an R - cavity first air inlet pipe 1902. The L - cavity first air inlet pipe 1901 is arranged at the lower end of the L - cavity choke 140, and the R - cavity first air inlet pipe 1902 is arranged at the lower end of the R - cavity choke 141. The second air inlet pipe 191 includes an L - cavity second air inlet pipe 1911 and an R - cavity second air inlet pipe 1912. The L - cavity second air inlet pipe 1911 is arranged obliquely above the L - cavity choke 140, and the R - cavity second air inlet pipe 1912 is arranged obliquely above the R - cavity choke 141. The L - cavity first air inlet pipe 1901 is directly below the L - cavity second air inlet pipe 1911, and the R - cavity first air inlet pipe 1902 is directly below the R - cavity second air inlet pipe 1912.

[0080] Taking the example of introducing fuel and gas into the L - cavity 100 for use description below. The principle of introducing fuel and gas into the R - cavity 101 is the same as that of the L - cavity 100, so it will not be elaborated here.

[0081] When using fuel, the fuel is connected to the fuel inlet elbow 18, and the fuel flows into the float chamber 11. Then the solenoid valve 12 is connected to the battery to make the solenoid valve needle 120 contract, and the fuel flows into the L - cavity fuel main channel 180. After that: it passes through the L - cavity fuel main jet 1800, mixes with air in the L - cavity foam pipe 1801 to generate a mixed gas, and is sprayed into the intake end of the L - cavity throttle valve 130 in the L - cavity 100 by the L - cavity fuel injection pipe 1802. After controlling the opening of the L - cavity throttle valve 130 through the throttle stepper motor 15, it is sucked into the engine for combustion; or it flows through the L - cavity fuel main jet 1800 into the L - cavity fuel idle channel 181, passes through the L - cavity fuel idle jet 1810, mixes with air to generate a mixed gas, and is sprayed into the outlet end of the L - cavity throttle valve 130 through the L - cavity transition hole 1811, and is sucked into the engine for combustion.

[0082] When using gas, according to the requirements of the engine, LPG gas or NG gas is connected to the L - chamber intake pipe 170 on the intake upper cover 17. The gas is sprayed into the intake end of the L - chamber throttle valve 130 in the L - chamber 100 through the L - chamber gas metering orifice 1720 on the L - chamber gas main channel 172 via the L - chamber gas spray pipe 1721, and then the opening degree of the L - chamber throttle valve 130 is controlled by the throttle step motor 15 and is inhaled by the engine for combustion; or the gas in the L - chamber gas main channel 172 is shunted and sprayed into the outlet end of the L - chamber throttle valve 130 through the L - chamber gas idle - speed channel 173 and the L - chamber supplementary air holes 174 and then is inhaled by the engine for combustion.

[0083] To sum up, the utility model realizes the switching between gas and fuel by simultaneously arranging an intake pipe with two - end intakes and an intake oil elbow on the body, using a single supply system, which improves convenience. And by setting supplementary air holes and transition holes, it meets the operating requirements of gas and fuel when the engine is idling and ensures the normal operation of the engine; the opening degrees of the throttle valve and the choke valve are controlled by a step motor, making the opening - degree adjustment more accurate, rapid and reliable; the fuel and air are mixed by a foam pipe and then provided to the engine, which can effectively atomize the fuel and mix it with air to improve the combustion efficiency; the intake upper cover is designed in a butterfly - type structure, which improves stability and strength while adding an artistic sense.

[0084] The embodiments of the utility model have been described above in conjunction with the accompanying drawings. However, the utility model is not limited to the above - mentioned specific embodiments. The above - mentioned specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the utility model, those of ordinary skill in the art can also make many forms without departing from the purpose of the utility model and the scope protected by the claims, and all of them belong to the protection scope of the utility model.

Claims

1. A dual-chamber supply system with intake at both ends, comprising a body and two chambers arranged in the body. A throttle valve is arranged in each chamber. The body is provided with two fuel channels and two gas channels, and each chamber is correspondingly connected to one of the fuel channels and one of the gas channels. It is characterized in that: An intake upper cover is arranged at the upper end of the body, and two intake pipes are symmetrically arranged on both sides of the intake upper cover, correspondingly connected to the two gas channels respectively; Each gas channel includes a gas main channel and a gas idle channel, wherein: one end of the gas main channel is connected to the corresponding intake pipe, and the other end is connected to the intake end of the corresponding throttle valve; one end of the gas idle channel is connected to the gas main channel, and the other end is connected to the outlet end of the corresponding throttle valve through a plurality of air supplement holes; The body is provided with an oil inlet elbow pipe, which is connected to the two fuel channels; Each fuel channel includes a fuel main channel and a fuel idle channel, wherein: one end of the fuel main channel is connected to the oil inlet elbow pipe, and the other end is connected to the intake end of the corresponding throttle valve; one end of the fuel idle channel is connected to the fuel main channel, and the other end is connected to the outlet end of the corresponding throttle valve through a plurality of transition holes.

2. The dual-chamber supply system according to claim 1, wherein A choke valve is arranged on one side of each chamber different from the throttle valve.

3. The dual-chamber supply system according to claim 1 or 2, characterized in that, A throttle stepping motor is installed on one side of the body, and the opening degree of the throttle valve is controlled through a throttle shaft component.

4. The dual-chamber supply system according to claim 2, characterized in that, A choke valve stepping motor is installed on one side of the body, and the opening degree of the choke valve is controlled through a choke valve shaft component.

5. The dual-chamber supply system according to claim 1, wherein, The gas main channel includes a gas orifice and a gas nozzle, wherein: one end of the gas orifice is connected to the intake pipe, and the other end is connected to the gas nozzle; the other end of the gas nozzle is connected to the corresponding chamber.

6. The dual-chamber supply system according to claim 1, characterized in that The fuel main channel is provided with a fuel main orifice, a foam tube and a fuel nozzle connected in sequence, wherein: the inlet end of the fuel main orifice is connected to the oil inlet elbow pipe; the foam tube is used for mixing fuel and air; the outlet end of the fuel nozzle is connected to the corresponding chamber; The other end of the fuel idle channel is provided with a fuel idle orifice connected to the transition hole.

7. The dual-chamber supply system according to claim 6, wherein An air inlet pipe is arranged on the body, including a first air inlet pipe and a second air inlet pipe, wherein: The first air inlet pipe is connected to the foam tube; The second air inlet pipe is connected to the fuel idle orifice.

8. The dual-chamber supply system according to claim 7, wherein The first air inlet pipe is provided with a first air orifice, and the second air inlet pipe is provided with a second air orifice.

9. The dual-chamber supply system according to claim 7, wherein The first air inlet pipe is arranged below the second air inlet pipe, and the first air inlet pipe is inclined downward, and the second air inlet pipe is arranged horizontally.

10. The dual-chamber supply system according to claim 1, characterized in that, The intake upper cover is of a butterfly structure.

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