CN112280586B

CN112280586B - Fuel evaporation system

Info

Publication number: CN112280586B
Application number: CN202011032706.8A
Authority: CN
Inventors: 高剑; 高健峰; 王何阳; 严丁刘; 罗英哲; 于坤; 刘春宁; 毛成思; 李扬眉; 吴彦震; 马庶; 诸旻; 马明杰
Original assignee: Shanghai Chinaust Automotive Plastics Corp ltd
Current assignee: Shanghai Chinaust Automotive Plastics Corp ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2024-04-19
Anticipated expiration: 2040-09-27
Also published as: CN112280586A

Abstract

The application discloses a fuel evaporation system, which comprises an air inlet component, an oil inlet component, a gas-liquid separator, an introduction component and a circulation component, wherein the air inlet component forms an air inlet and an air inlet, the oil inlet component forms an oil inlet and an oil inlet, the oil inlet is used for being communicated with a fuel tank, the gas-liquid separator is provided with a bottom wall, a side wall and a top wall which are formed by extending upwards from the bottom wall, the inner side of the side wall, the inner side of the bottom wall and the bottom wall form a separation chamber, the introduction component comprises a flow guide pipe and a desorption pump, the flow guide pipe is provided with an introduction port and an introduction port, the desorption pump is communicated with the flow guide pipe, the flow guide pipe is provided with a first pipe part communicated with the inlet and a second pipe part communicated with the outlet, one end of the first pipe part is provided with the introduction port and the air inlet is simultaneously communicated with the air inlet and the oil inlet, and the circulation component comprises a venturi and a return pipe, the venturi is communicated with the first pipe part of the flow guide pipe and the separation chamber.

Description

Fuel evaporation system

Technical Field

The present disclosure relates to fuel vapor systems, and particularly to a fuel vapor system for a vehicle.

Background

With the improvement of living standard, the household sedan is gradually popularized in middle and small families. To meet the needs of users, existing automobile design factories are improving the performance of automobiles, especially the user experience and durability of automobiles.

This is not only the case for cars, but also for other types of fuel vehicles. During driving of a fuel-powered vehicle, a user may hear noise from a number of sources, such as vehicle tires and floor friction, friction between various components in the vehicle's engine, and the like. In addition, the circulation of oil and gas in the pipe in the oil and gas conduction system of the vehicle also generates loud noise.

Clearly, such a drawback is intolerable to the user. Furthermore, since the flow path in particular in the pipes is all along the direction in which the pipes extend, the direction in which the pipes extend is a thousand monster during the design of the vehicle, in particular in the hydrocarbon evaporation system of the vehicle.

The oil-gas evaporation system comprises an activated carbon tank, a valve body, an air inlet assembly and an oil inlet assembly. An active desorption pump is also included in the fuel vapor control (EVAP). After the oil-gas evaporation system works for a preset time, the whole oil-gas evaporation system is in a high-heat state (namely a heat engine state), some gaseous fuel oil is not ready to flow back, and the valve body is closed. After the vapor system is turned into a cool state (i.e., a chiller state) for a predetermined time, some of the droplets solidify on the inner wall of the tube and some of the droplets may enter the active desorption pump. The oil droplets solidified on the inner wall of the pipe not only obstruct the subsequent filling of the gas in the oil and gas evaporation system, resulting in an increase of noise. In a long-term manner, oil drops entering the active desorption pump not only can reduce the service life of the active desorption pump, but also can enable some lubricating oil and the like in the active desorption pump to be taken away by the oil drops, so that friction force among all parts in the active desorption pump is increased, larger noise is generated, the desorption pump stalls can be caused after long-term operation, an ECU (electronic control unit) alarm is caused, a fault code is displayed by a vehicle, and the desorption pump needs to be replaced.

More importantly, the fuel can be more fully utilized only when the oil vapor formed by the evaporation of the oil vapor system enters the combustion chamber of the internal combustion engine for combustion. Once excessive fuel oil enters the engine in the form of liquid oil for combustion, insufficient combustion of the fuel oil can be caused, so that not only can the fuel consumption of the internal combustion engine be increased, but also more waste gas can be generated, and the method is in conflict with the energy conservation and environmental protection advocated by the state at present.

Disclosure of Invention

It is an object of the present invention to provide a fuel vaporization system, wherein a gas-liquid separator is disposed in the fuel vaporization system, wherein the gas-liquid separator is capable of guiding the flow of gas in the fuel vaporization system to reduce noise generated by the fuel vaporization system.

It is another object of the present invention to provide a fuel vaporization system, wherein the gas-liquid separator of the fuel vaporization system can lengthen a path through which the fuel vaporization system gas flows, thereby being capable of retaining the oil vapor in the fuel vaporization system in a gaseous state in a thermo-mechanical state, thereby preventing the oil vapor from entering other parts and adhering to the inner wall of the pipe.

Another object of the present invention is to provide a fuel evaporation system, wherein the gas-liquid separator of the fuel evaporation system can avoid excessive oil gas entering the active desorption pump during the conversion process of the heat engine and the cold engine, so as to prolong the service life of the active desorption pump.

Another object of the present invention is to provide a fuel evaporation system, wherein the gas-liquid separator of the fuel evaporation system can realize separation of liquid and oil by centrifugation, so that waste of fuel can be avoided.

Another object of the present invention is to provide a fuel evaporation system, wherein the gas-liquid separator of the fuel evaporation system can achieve separation of liquid oil and can recover the separated liquid oil, thereby enabling to improve utilization efficiency of fuel.

Another object of the present invention is to provide a fuel vaporization system in which the gas-liquid separator of the fuel vaporization system is capable of causing gas to vibrate at high frequency inside the gas-liquid separator, so that oil droplets can be prevented from adhering to the gas-liquid separator.

To achieve at least one of the above objects of the invention, the present invention provides a fuel vaporization system, wherein the fuel vaporization system includes:

an air inlet assembly, wherein the air inlet assembly forms an air inlet and an air outlet, and the air inlet is used for communicating with the oxygen supply space;

An oil inlet assembly, wherein the oil inlet assembly forms an oil inlet and an oil delivery port, wherein the oil inlet is configured to communicate with a fuel tank;

a gas-liquid separator, wherein the gas-liquid separator has a bottom wall, a side wall extending upwardly from the bottom wall, and a top wall, wherein the inside of the side wall, the inside of the bottom wall, and the bottom wall form a separation chamber, wherein the gas-liquid separator further forms an inlet and an outlet in communication with the separation chamber;

An introduction assembly, wherein the introduction assembly comprises a draft tube and a desorption pump, wherein the draft tube has an introduction port and an exit port, wherein the desorption pump is communicated with the draft tube, wherein the draft tube has a first tube part communicated with the inlet port and a second tube part communicated with the exit port, wherein one end of the first tube part forms the introduction port, and the introduction port is simultaneously communicated with the air feed port and the oil feed port;

A circulation assembly, wherein the circulation assembly comprises a venturi and a return pipe, wherein the venturi is connected to a first pipe portion of the draft pipe, and the return pipe is connected to the separation chamber and the venturi, so as to introduce liquid oil falling into the separation chamber into the first pipe portion and again into the separation chamber from the inlet to evaporate into oil vapor.

According to an embodiment of the invention, the top wall is sealingly closed to the separation chamber, wherein the side wall is provided with at least the inlet and the outlet, wherein the inlet is provided oriented tangentially to the side wall provided with the inlet.

According to an embodiment of the invention, the vertical height of the outlet from the bottom wall is higher than the vertical height of the inlet from the bottom wall.

According to an embodiment of the present invention, the middle portion of the bottom wall extends upward to form an airflow baffle, wherein a liquid storage area is formed between an outer wall of the airflow baffle and an inner wall of the side wall and the bottom wall.

According to an embodiment of the invention, the top end of the air flow barrier is higher relative to the bottom wall than the inlet provided at the side wall is from the bottom wall.

According to an embodiment of the invention, at least one partition plate is provided at the bottom wall between the outer wall of the airflow barrier and the inner wall of the side wall.

According to an embodiment of the invention, the air flow barrier is implemented as a tube, the top wall is provided with a second flow guide tube, wherein one end of the second flow guide tube is communicated with the outlet, and wherein the other end of the second flow guide tube integrally extends into a channel of the tube-shaped air flow barrier and is communicated with the separation chamber.

According to an embodiment of the present invention, an inlet connector and an outlet connector are respectively disposed on the outer wall of the gas-liquid separator, one end of the inlet connector is connected to the inlet, the other end of the inlet connector is in sealing butt joint with the first pipe portion, and one end of the outlet connector forms the outlet and is connected to the second pipe portion.

According to an embodiment of the invention, the direction in which the inlet connection extends is implemented along a tangential direction of the side wall.

According to an embodiment of the present invention, at least one annular clamping edge is disposed on an outer wall of the inlet connector, so as to be clamped with the first pipe portion.

Further objects and advantages of the invention will become apparent from a consideration of the ensuing description.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 shows a schematic diagram of a fuel vaporization system according to the present invention.

Fig. 2 shows a perspective view of a gas-liquid separator of the fuel vaporization system according to the present invention.

FIG. 3 shows a cross-sectional view of one embodiment of a vapor-liquid separator of a fuel vaporization system according to the present invention.

Fig. 4 shows a cross-sectional view of a second embodiment of a gas-liquid separator of a fuel vaporization system according to the present invention.

Fig. 5 shows an exploded view of a second embodiment of a gas-liquid separator of the fuel vaporization system of the present invention.

Fig. 6 shows a schematic diagram of a variant of the first embodiment of the gas-liquid separator of the fuel evaporation system according to the invention.

Fig. 7 shows a schematic diagram of connection of a modified embodiment of the gas-liquid separator of the fuel evaporation system according to the first embodiment of the present invention to other structures.

Fig. 8 shows a schematic diagram of the circulation of oil vapor after the connection of the modified embodiment of the first embodiment of the gas-liquid separator of the fuel vaporization system according to the present invention with other structures.

Detailed Description

The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.

A fuel vaporization system according to a preferred embodiment of the present invention, which can be applied to a vehicle having a fuel engine for introducing fuel into the fuel engine of the vehicle, will be described in detail below with reference to fig. 1 to 8 of the accompanying drawings. It is worth mentioning that the fuel evaporation system can increase the gasification rate of fuel (the mass fraction ratio of oil vapor to liquid oil in unit volume entering the fuel engine), so that more fuel enters the fuel engine in the form of oil vapor, and thus the fuel introduced through the fuel evaporation system can be combusted more fully in the fuel engine. At the same time, exhaust gas formed by insufficient combustion of fuel is reduced.

Referring to fig. 1 to 3, in particular, the fuel vaporization system includes an intake assembly 10, an intake assembly 20, and an oil intake assembly 30, and a gas-liquid separator 40.

The air intake assembly 10 has an air intake 101 and an air bleed 102. The lead-in assembly 20 has an lead-in port 201 and an lead-out port 202. The oil intake assembly 30 has an oil intake 301 and an oil feed 302.

The intake assembly 10 includes at least one intake pipe 11, wherein the intake pipe 11 forms the intake port 101 and the air supply port 102, and the intake port 101 of the intake pipe 11 is communicated with an oxygen supply space, such as ambient air. Preferably, the intake assembly 10 further comprises a filter 12, wherein the filter 12 is connected to the intake port 101 and the oil inlet 301 of the intake pipe 11, so that both the intake oxygen and the oil vapor can be filtered by the filter 12. Preferably, the filter 12 is implemented as an activated carbon canister.

The introducing assembly 20 comprises a flow guiding pipe 21 and a desorption pump 22. The draft tube 21 forms the inlet 201 and the outlet 202. The inlet 201 of the draft tube 21 is connected to the air feed port 102 and the oil feed port 302. The outlet 202 is used to communicate with the combustion chamber of the fuel engine. Preferably, when the intake assembly 10 includes the filter 12, the inlet 201 of the draft tube 21 is communicated with the air supply port 102 and the oil supply port 302 through the filter 12. The desorption pump 22 is provided in the draft tube 21 to guide the oxygen and the oil vapor flowing in from the inlet 201 to the outlet 202 to the combustion chamber of the fuel engine.

The oil inlet assembly 30 includes at least one oil inlet pipe 31, one end of the oil inlet pipe 31 forms the oil inlet 301, and the other end forms the oil feed port 302. The oil feed assembly 30 further includes a fuel tank 32, and the oil inlet 301 of the oil feed pipe 31 is connected to the fuel tank 32.

It should be noted that the fuel inlet assembly 30 may further be provided with a carburetor on the fuel inlet pipe 31 to vaporize fuel discharged from the fuel tank 32 to form gaseous fuel vapor. The oil vapor and the oxygen introduced by the intake assembly 10 are fed into the combustion chamber of the fuel engine through the gas-liquid separator 40.

The gas-liquid separator 40 is provided in communication with the draft tube 21 of the introduction unit 20 and is located between the introduction port 201 and the desorption pump 22.

Specifically, the gas-liquid separator 40 forms a separation chamber 401, an inlet 402, and an outlet 403. The inlet 402 and the outlet 403 are in communication with the separation chamber 401. The draft tube 21 has a first tube portion 2101 in communication with the inlet 402 and a second tube portion 2102 in communication with the outlet 403.

Referring to fig. 2 and 3, the gas-liquid separator 40 has a bottom wall 41 and a side wall 42 formed to extend upward from the bottom wall 41. The inner side of the side wall 42 and the inner side of the bottom wall 41 form the separation chamber 401. The gas-liquid separator 40 further includes a top wall 43. The top wall 43 is sealingly closed to the separation chamber 401. It should be noted that the top wall 43 may be formed integrally with the bottom wall 41 and the side wall 42, or may be formed by a separate cover that sealingly covers the top of the side wall 42 of the gas-liquid separator 40, and the present invention is not limited in this respect.

It is worth mentioning that the inner side of the side wall 42 is embodied as a cylindrical surface. The inlet 402 is provided to the side wall 42, and the inlet 402 is provided to face a direction tangential to the side wall 42 where the inlet 402 is provided, wherein the first pipe portion 2101 communicates with the inlet 402 in a direction tangential to the side wall 42. That is, the first pipe portion 2101 is provided so as to be capable of introducing fluid into the separation chamber 401 from a direction tangential to the side wall 42.

By this arrangement, when the oil vapor in the first pipe portion 2101 is introduced into the separation chamber 401 through the inlet 402, the oil vapor is guided by the inner side of the side wall 42 and is able to flow around the inner side of the side wall 42, so that the oil vapor is prevented from directly colliding with the gas-liquid separator 40 to generate large noise, and dirt adhering to the inner side of the side wall 42 is washed away, thereby maintaining the side wall 42 with good flow conductivity. In addition, the liquid oil mixed in the oil vapor is collected in the separation chamber 401 by the gravity of the liquid oil, and the liquid oil collected in the separation chamber 410 can be volatilized again into a gas state by the high-frequency vibration of the liquid oil due to the annular movement of the oil vapor along the inner side of the side wall 42. By continuously circulating the above, the content of the liquid oil in the oil vapor flowing out from the outlet 403 is extremely small, so that the amount of the liquid oil entering the oil vapor can be reduced, and the vaporization rate of the fuel can be increased.

Further, since the oil vapor is introduced from the first pipe portion 2101 into the gas-liquid separator 40, the direction of flow thereof is changed to bypass in the separation chamber 401, so that the oil vapor is dispersed, and accordingly the wavelength of sound generation can be prolonged, and thus the loudness of noise generated during the flow of the oil vapor can be reduced.

Preferably, the vertical height of the outlet 403 from the bottom wall 41 is higher than the vertical height of the inlet 402 from the bottom wall 41. When the fuel evaporation system is in a heat engine state, liquid oil falls into the bottom wall 41 under the action of self gravity, and gaseous oil vapor diffuses to the outlet 403 and is led out from the outlet 202 by the desorption pump 22. In this way, the liquid oil in the oil vapor introduced into the fuel engine can be well separated to improve the efficiency of fuel combustion in the fuel engine.

In an embodiment of the present invention, the middle portion of the bottom wall 41 extends upward to form an air flow barrier 44, wherein a liquid storage area is formed between the outer wall of the air flow barrier 44 and the inner wall of the side wall 42 and the bottom wall 41. Preferably, the height of the baffle relative to the bottom wall 41 is higher than the height of the inlet 402 provided in the side wall 42. Thus, after the oil vapor flows into the separation chamber 401 from the inlet 402, more oil vapor bypasses along the inner side of the sidewall 42 due to being blocked by the air flow barrier 44 in the radial direction, thereby extending the path along which the oil vapor bypasses, so that more oil droplets in the oil vapor can be deposited in the liquid storage region by gravity.

Preferably, at least one partition plate 45 is provided at the bottom wall 41 between the outer wall of the air flow barrier 44 and the inner wall of the side wall 42, so as to avoid the liquid oil deposited excessively in the liquid storage area from splashing.

More preferably, the airflow shield 44 is implemented as a tube. It is further noted that the top wall 43 is provided with a second flow guiding tube, wherein one end of the second flow guiding tube is communicated with the outlet 403, and the other end of the second flow guiding tube integrally extends into the channel of the air flow baffle 44. In this way, the oil vapor introduced from the inlet 402, after bypassing along the side wall 42, is changed in flow direction by the air pressure, and then enters the second guide pipe from the vertical direction, before being guided out from the outlet 403. And more oil drops fall down to the liquid storage area under the action of gravity in the process of changing the flow direction of the oil vapor.

Preferably, in any of the above embodiments of the present invention, the outer wall of the gas-liquid separator 40 is provided with an inlet joint 47 and an outlet joint 48, respectively. The inlet fitting 47 is connected at one end to the inlet 402 and the other end of the inlet fitting 47 is sealingly engaged to the first tube portion 2101. One end of the outlet joint 48 is communicated with the outlet 403, and the other end of the outlet joint 48 is communicated with the second pipe portion 2102.

It is worth mentioning that the direction in which the inlet connection 47 extends is implemented along a tangential direction of the side wall 42.

The inlet fitting 47 and the outlet fitting 48 are sealingly engaged with the first tube portion 2101 and the second tube portion 2102, respectively.

The outer wall of the inlet connector 47 is provided with at least one annular clamping edge for clamping the first pipe portion 2101.

Referring to fig. 1, 2, 4 and 5, in another embodiment of the present invention, the gas-liquid separator 40 further comprises at least one layer of partition 49, wherein the layer of partition 49 is disposed in the separation chamber 401, wherein the vertical height of the layer of partition 49 from the bottom wall 41 is lower than the height of the outlet 403 from the bottom wall 41 and is greater than the height of the inlet 402 from the bottom wall 41. Accordingly, the separation chamber 401 will be divided by the layer partition 49 into a return chamber 4011 defined between the top of the layer partition 49 and the top wall 43 and a reservoir chamber 4012 defined between the bottom of the layer partition 49 and the bottom wall 41. At the same time, the return chamber 4011 is communicated with the outlet 403. The reservoir 4012 is in communication with the inlet 402.

The bottom wall of the layer partition 49 extends in the vertical direction into the reservoir 4012 to form a return pipe 491. A return hole 4901 is formed at the end of the return tube 491 in the reservoir 4012. At least one communication hole 4902 is formed in the layer separator 49, wherein the return hole 4901 and the communication hole 4902 are respectively communicated with the return chamber 4011 and the reservoir chamber 4012. The return hole 4901 is provided in the inflow path of the oil vapor flowing in from the inlet 402.

It should be noted that, since the return hole 4901 is disposed on the inflow path of the oil vapor flowing from the inlet 402, a venturi effect is formed at the return hole 4901 to form a negative pressure with a predetermined magnitude, so that the liquid oil in the return chamber 4011 is led into the liquid storage chamber 4012 under the action of the negative pressure, thereby avoiding that too much liquid oil is led out from the return chamber 4011 to the combustion chamber of the engine from the outlet 202. In this way, the vaporization rate of the fuel vaporization system can be improved.

With the above-described configuration, when the oil vapor flows into the liquid storage chamber 4012 from the inlet 402, the oil vapor moves circumferentially along the inner side of the side wall 42, and the hot oil vapor rises from the communication hole 4902 to the return chamber 4011 due to the upper and lower heat. And since the upward movement of the oil vapor is blocked by the layer partition 49, most of the oil vapor can flow only from the communication hole 4902 to the return chamber 4011. And a small amount of the liquid oil introduced into the return chamber 4011 returns to the liquid storage chamber 4012 through the return hole 4901 by gravity.

Further, the liquid oil mixed in the oil vapor flowing into the chamber 4011 falls down to the layer separator 49 again partially by gravity, and the liquid oil falling down to the layer separator 49 flows back to the liquid storage chamber 4012 through the backflow hole 4901. As the fuel evaporation system is continuously circulated, the liquid oil in the liquid storage chamber 4012 is vibrated at high frequency to gradually volatilize into oil vapor, and is again led out from the outlet 403 to the combustion chamber of the engine from the outlet 202 in the form of oil vapor.

It will be appreciated that since the oil vapor is introduced into the gas-liquid separator 40 to move circumferentially along the inner side of the sidewall 42 and then lifted up and down to the return chamber 4011, the direction of the oil vapor is changed, thereby increasing the efficiency of the oil vapor and liquid-liquid separation.

More preferably, the top of the layer separator 49 extends into the reflow chamber 4011 to form a boss 492, wherein a middle portion of the boss 492 forms a lift channel 49201 communicating with the reservoir chamber 4012 in a vertical direction, and wherein a sidewall of the boss 492 forms a through hole communicating with the lift channel 49201 to define the communication hole 4902. With this arrangement, the oil vapor entering the return chamber 4011 from the lift channel 49201 needs to change its flow direction again to be able to flow out from the outlet 403, so as to lengthen the path through which the oil vapor flows in the gas-liquid separator 40, so that the liquid oil in the oil vapor is sufficiently separated.

Since the liquid oil flowing back in the liquid storage chamber 4012 can vibrate with the high-frequency vibration generated by the oil vapor, the liquid oil in the liquid storage chamber 4012 can be quickly volatilized into the oil vapor so that the oil droplets can be quickly recycled.

Referring to fig. 1,2 and 6-8, in another embodiment of the present invention, the fuel vaporization system includes a circulation assembly 50. The circulation assembly 50 includes a venturi 51 and a return tube 52. The venturi 51 is connected to the first pipe portion 2101 of the draft pipe 21. The return pipe 52 is connected to the separation chamber 401 and the venturi 51.

Thus, when the oil vapor is guided from the draft tube 21 to the gas-liquid separator 40, the oil vapor passes through the venturi 51 and then enters the separation chamber 401 through the first tube portion 2101 of the draft tube 21.

Accordingly, the liquid oil deposited in the separation chamber 401 is guided back to the venturi 51 by the return pipe 52 due to the pressure difference. By such a long-time reciprocation cycle, the liquid oil mixed in the oil vapor can be separated by the gas-liquid separator 40 and re-evaporated into the oil vapor during the subsequent cycle.

From the above description, it will be understood by those skilled in the art that the gas-liquid separator 40 not only can achieve a good noise reduction effect, but also can well separate the liquid oil mixed in the oil vapor and cyclically gasify the mixed liquid oil into the oil vapor to improve the utilization efficiency of the fuel.

It will be appreciated by persons skilled in the art that the embodiments of the invention shown in the foregoing description are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. A fuel vaporization system, wherein the fuel vaporization system comprises:

2. The fuel vaporization system of claim 1 wherein the top wall is sealingly covered to the separation chamber, wherein the side wall provides the inlet and the outlet, wherein the inlet is oriented tangentially to the side wall provided with the inlet.

3. The fuel vaporization system of claim 1 or 2 wherein the outlet has a vertical height from the bottom wall that is greater than a vertical height of the inlet from the bottom wall.

4. A fuel vaporization system as claimed in claim 3 wherein a central portion of said bottom wall extends upwardly to form a gas flow barrier, and wherein a liquid storage area is defined between an outer wall of said gas flow barrier and an inner wall of said side wall and said bottom wall.

5. The fuel vaporization system of claim 4 wherein a top end of the airflow barrier is higher relative to the bottom wall than the inlet provided to the side wall is from the bottom wall.

6. The fuel vaporization system of claim 5 wherein at least one barrier is provided at the bottom wall between the outer wall of the airflow barrier and the inner wall of the side wall.

7. The fuel vaporization system of claim 6 wherein the airflow barrier is implemented as a tube and the top wall defines a second flow conduit, wherein one end of the second flow conduit communicates with the outlet and wherein the other end of the second flow conduit integrally extends into the passage of the tube-like airflow barrier and communicates with the separation chamber.

8. The fuel vaporization system of claim 1 wherein the outer wall of the gas-liquid separator is provided with an inlet fitting and an outlet fitting, respectively, the inlet fitting being connected at one end to the inlet and at the other end to the first tube section in sealed engagement, the outlet fitting being connected at one end to the second tube section and forming the outlet.

9. The fuel vaporization system of claim 8 wherein the direction in which the inlet fitting extends is implemented along a tangential direction of the sidewall.

10. The fuel vaporization system of claim 9 wherein the outer wall of the inlet fitting defines at least one annular lip for engaging the first tube portion.