KR20030067217A - Intake apparatus of engine - Google Patents

Abstract

PURPOSE: An intake apparatus is provided to achieve a high engine output by permitting a large amount of air to flow into the engine through the use of the air of the vehicle. CONSTITUTION: An intake apparatus comprises a plurality of air ducts(20,30,40,50) each of which has an end connected to an intake port of a cylinder of an engine and the other end exposed toward the front portion of the vehicle through an external air inlet hole(92) formed at a bonnet of the engine; and throttle bodies(25,35,45,55) mounted on the front ends of the air ducts and open toward the front in such a manner that the throttle bodies receive the air of the vehicle. The throttle bodies are mounted with shutters(26,36,46,56) which rotate in such a manner that the shutters adjust air flow by being interlocked with the operation of the accelerator.

Description

Intake apparatus of engine for driving wind intake

The present invention relates to an intake structure of an engine for driving wind inflow, and more particularly, it is possible to introduce a large amount of intake air into the engine using the running wind of a vehicle without having a complicated charging device such as a turbocharger. It is possible to achieve a high output and high response of the engine, and the structure is related to the intake system structure of the engine for the inflow of running wind is simple and the engine weight is reduced.

The engine of the vehicle is powered by the explosive power generated in the process of mixing the fuel and the air in the air at the proper ratio in the mixing chamber. The types of engines are gasoline engine, diesel engine, It is divided into gas engine and the like.

The above-described engines have advantages and disadvantages depending on the fuel supply device that is differently formed according to the fuel used, and also the output of the engine, the price of the fuel, exhaust and noise problems, and the convenience of operation. In consideration of these advantages and disadvantages, gasoline engines are mainly mounted on passenger vehicles, diesel engines are mounted on commercial vehicles, and gas engines are generally mounted on small commercial vehicles.

As described above, although the type and shape of the engine and the output thereof are different according to the type of vehicle, research and development are being actively conducted to obtain the maximum output with the same displacement. As part of this, in recent engines, various sensors and electronic controllers are attached to improve driving conditions and output power. In addition, in the case of a gasoline engine, a plurality of valves are installed in one cylinder, or a turbocharger or a supercharger, which was conventionally applied only to a diesel engine, is applied.

In particular, in the case of an engine mounted on a racing car for enjoying the highest speed, it is common that the engine is modified by a qualified technician to win various competitions.

However, in the intake system applied to the conventional engine, as shown in FIG. 8, the air duct 12 is connected to one side of the surge tank 11 formed in a rectangular cylinder shape, and the surge tank 11 is provided. There was no significant deviation from the shape in which the intake manifold 13 was connected to the lower side of the. For reference, an inlet side of the air duct 12 is connected to an air cleaner (not shown) for filtering foreign substances in the atmosphere, and a fuel injector 14 for injecting fuel is provided on one side of the intake manifold 13. Formed.

When the driver presses the accelerator pedal for acceleration in the intake system configured as described above, the response is transmitted to the accelerator cable, the shutter of the throttle body is opened, and the air in the atmosphere is released by the negative pressure of the combustion chamber. Is sucked into the surge tank, and the air introduced into the surge tank 11 is distributed and supplied through the manifold connected to the intake port of each cylinder, that is, the intake manifold 13.

Therefore, when the driver presses the accelerator pedal, the air in the atmosphere is introduced into the surge tank through the air cleaner and the air duct by the combustion chamber negative pressure, and then distributed through the intake manifold. And in the case of racing vehicles that require high power there was a problem that does not meet the needs of the driver. In order to increase the engine output and acceleration as described above, a large amount of intake is required. In the related art, the turbine and the blower are rotated by using the flow energy of the exhaust gas to pressurize the air to improve high output and acceleration. Is complicated and increases the weight of the vehicle, and in particular, the turbocharger causes exhaust resistance, so there is a limit in the application of the engine of the racing vehicle.

Therefore, the present invention has been made to solve the above problems, it is possible to introduce a large amount of intake air into the engine using the running wind of the vehicle without having to provide a complicated charging device such as a turbocharger to increase the engine power And it is an object to provide an intake machine structure of the engine can achieve a high response, the structure is simple and the engine weight is reduced.

The present invention as a means for achieving the above object,

In the intake system which introduces combustion air into the engine,

A plurality of air ducts, one end of which is connected to an intake port of each cylinder of the engine, the other end of which is exposed toward the front of the vehicle through an external air introduction hole formed in the bonnet of the engine;

A throttle body mounted to the front of the plurality of air ducts in an open shape to receive the driving wind of the vehicle, the throttle body having a shutter configured to rotate and open / close to adjust an air intake amount in association with a driver's accelerator pedal; Characterized in that configured to include.

1 is a block diagram of an intake machine formed by the present invention.

2 is a schematic perspective view of an intake machine formed by the present invention;

Figure 3 is a front view of the intake machine according to the present invention.

Figure 4 is a rear view of the intake machine according to the present invention.

Figure 5 is a side view of the intake machine according to the present invention.

Figure 6 is a partial cross-sectional plan view of the intake machine according to the present invention.

Figure 7 is an operating state of the present invention in the air duct open state.

8 is a view for explaining a conventional technology.

※ Explanation of code for main part of drawing

100: intake 20, 30, 40, 50: air duct

21,31,41,51: Upper pipe 22,32,42,52: Lower pipe

23,33,43,53: taper pipe 25,35,45,55: throttle body

26,36,46,56: Shutters 27,37,47,57: Switchgear

60: surge tank 70: air filter

72: Link 73: Fuel Injector

74: auxiliary fuel injector 75,76: delivery pipe

82: lower flange 90: bonnet

Hereinafter, with reference to the accompanying drawings, preferred embodiments according to the configuration and operation of the present invention will be described in detail.

1 is a configuration diagram of an intake machine formed by the present invention, FIG. 2 is a schematic perspective view of an intake machine formed by the present invention, FIG. 3 is a front view of the intake machine according to the present invention, and FIG. 5 is a side view of the intake machine according to the present invention, FIG. 6 is a partial cross-sectional view of the intake machine according to the present invention, and FIG. 7 is the present invention with the air duct open. The operation state of.

Reference numeral 100 shown in the drawing indicates an intake machine formed by the present invention, the intake machine 100 is a plurality of air ducts 20, 30, 40, 50 connected to each cylinder of the engine ) Is a combination.

One end of the air ducts 20, 30, 40, 50 is connected to the intake port of each cylinder, and the other end is connected to the front of the vehicle through the external air introduction hole 92 provided in the bonnet 90 of the engine. To be exposed.

And the front end of each of the air ducts 20, 30, 40, 50, the throttle body (25, 35, 45) for adjusting the intake amount of the running wind by the driver's accelerator pedal operation, respectively ( 55) is mounted. In particular, the shutters 26, 36, 46, 56 formed at the center of the throttle bodies 25, 34, 45, 55 are the shutters described above when the driver operates the accelerator pedal. Each of the opening and closing devices 27, 37, 47, 57 is preferably connected by a separate link 72 so that the (26) 36, 46, 56 can be operated uniformly.

And the air ducts 20, 30, 40, 50 are composed of one piece of curved tubes or the upper tube 21, 31, 41, 51 and lower tube 22, 32 ( 42 and 52 and then form a surge tank 60 having a volume to allow the respective air ducts 20, 30, 40, 50 to communicate with each other at the boundary where the upper and lower pipes are connected. In addition, the surge tank 60 is formed of a box capable of accommodating the ends of the upper pipes therein, and the standard for dividing the air ducts 20, 30, 40, 50 into two parts is large. do. That is, the air ducts 20, 30, 40, 50 and the upper pipes (21) (31) (41) (51) for introducing air from the outside based on the surge tank (60) It consists of lower tubes 22, 32, 42 and 52 for distributing and supplying air to each cylinder of the engine.

The upper tubes 21, 31, 41, 51 are throttle bodies 25, 35, 45 having upper and lower ends, respectively, with upper and lower flanges 81 and lower flanges 82, with predetermined intervals maintained. 55 and the flange 86 of the surge tank 60, the lower pipes 22, 32, 42, 52, the upper ends thereof are connected to the lower surface of the surge tank 60, The lower ends are provided with a plate-shaped mounting portion 83 for fastening to the intake port side of the engine.

In this way, a hole is drilled at regular intervals in the lower flange 82, which is a plate member, and the upper pipes 21, 31, 41, 51 are inserted into the holes, and welded to seal the connection, and the lower flange ( When the 82 is in close contact with the flange 86 of the surge tank 60, the lower flange 82 becomes an upper wall surface of the surge tank 60 formed into a box, and the lower flange 82 is a surge tank ( 60 is fastened so that it can be disassembled and assembled with the flange 86 and the bolt 84 formed on the top. In the process of fastening the bundles of the upper tubes 21, 31, 41, 51 and the bundles of the lower tubes 22, 32, 42, 52, the lower flange 82 and the surge tank ( It is preferable that a gasket 85 is provided between the flanges 86 of 60 to maintain hermeticity.

On the other hand, the diameter of the pipe constituting the upper pipe 21, 31, 41, 51 is the diameter of the pipe constituting the lower pipe 22, 32, 42, 52 to intake more air It is preferable to form larger. In this case, the suction air passing through the large diameter upper tubes 21, 31, 41 and 51 passes through the surge tank 60 and the lower diameter tubes 22, 32 and 42 (smaller diameter). In order to reduce the resistance that may be generated during the flow into the 52) to the lower side of the lower flange 82 to extend the upper pipe (21) (31) (41) (51) by a predetermined section It is preferable to form taper pipes 23, 33, 43, 53. In particular, the beginning of the tapered pipes 23, 33, 43, 53 is equal to the diameter of the upper pipe, and the distal end is preferably the diameter of the lower pipe, so that the diameter is gradually reduced. Do. The end portions of the tapered pipes 23, 33, 43, 53 are preferably formed to be located close to the inner lower wall of the surge tank 60. The proper interval is about 3 to 7 mm. Do. Due to this gap, the air introduced from the upper tubes 21, 31, 41, and 51 can reach the surge tank 60 and diffuse into the entire volume of the surge tank 60.

A fuel injector 73 for injecting fuel is mounted in the middle of the lower pipes 22, 32, 42, and 52 of the air ducts 20, 30, 40, 50. The top of one fuel injector 73 is connected to the delivery pipes 75.

In addition, an auxiliary fuel injector 74 is formed inside the surge tank 60 to increase the fuel injection amount, if necessary, when a large amount of running wind is introduced through the air duct at high speed of the vehicle. The supplementary fuel injector 74 is configured to compensate for when the injection amount does not reach the air introduction amount, so that the driver can selectively operate it. That is, when the driver requires a large output while driving, the auxiliary fuel injector 74 can be operated by operating a switch provided separately in the driver's seat. In particular, although the auxiliary fuel injector 74 is formed in only two positions in the embodiment of the present invention connected to a separate delivery pipe 76, it may be formed in more positions in some cases.

And the front end of the throttle body (25, 35, 45, 55) is equipped with an air filter 70 for filtering foreign matter contained in the running wind is sucked. That is, in the case of the intake system 100 according to the present invention, instead of deleting the air cleaner formed in the conventional intake system, the size of the air filter 70 is increased to remove foreign substances included in the driving wind. . In particular, the air filter 70 is preferably formed detachable so as to be exchangeable.

For reference, although not described in the configuration and drawings of the present invention, the intake machine 100 may be equipped with various sensors for identifying the operating state of the engine.

Referring to the operation of the present invention configured as described above are as follows.

First, in the process of mounting the engine equipped with the intake machine 100 configured as described above in the engine room of the vehicle, the upper ends of the air ducts 20, 30, 40, 50 are formed of the bonnet 90. The outside air introduction hole 92 is exposed to the outside so as to receive the driving wind in a straight line toward the front of the vehicle.

Therefore, when the driver presses the accelerator pedal to start the engine, the actuator 27, 37, 47, 57 connected to the accelerator cable 77 are rotated uniformly by the link 72 so that the throttle body 25 ( As the shutters 26, 36, 46, 56 of the 35, 45, and 55 are opened, the atmospheric pressure above the bonnet 90 is transmitted to the negative pressure of the engine so that the air duct 20, 30 40 and 50 are supplied to the combustion chamber. At this time, the foreign matter contained in the atmosphere flowing into the throttle body (25) (35) (45) 55 is air filter 70 mounted in front of the throttle body (25) (35) (45) (55). It is filtered by.

When the vehicle is running, the shutters 26, 36, 46 (of the throttle bodies 25, 35, 45, 55, which are opened forward by the driving wind generated by the speed at which the vehicle runs) ( 56, a larger amount of air is sucked in. In particular, the driving wind is more advantageous in high-speed driving as the strength is increased in proportion to the running speed of the vehicle, as described above, the feature of the present invention is the supercharging of the intake air without a separate turbocharger, such as a turbocharger Is in that it is possible.

In addition, when the driver desires a larger output, the driver may operate to supply sufficient fuel through the auxiliary fuel injector 74. Then, fuel is injected not only through the fuel injector 73 but also through the auxiliary fuel injector 74. As shown in the drawing, the nozzle part of the auxiliary fuel injector 74 is formed close to the inner wall surface of the surge tank 60 so that the nozzle When the fuel passes through the portion, the fuel spreads over the entire volume of the surge tank 60 and flows into each of the lower pipes 22, 32, 42, and 52.

The upper pipes 21, 31, 41 and 51 are formed by the tapered pipes 23, 33, 43 and 53 of the air ducts 20, 30, 40 and 50 described above. The driving wind flowing strongly through is naturally induced to the lower pipes 22, 32, 42 and 52 without hitting the inner wall of the surge tank 60, and the driving wind flowing from the remaining air ducts is not an intake stroke. Since the intake stroke is introduced through the surge tank 60 to the lower observation, the volume efficiency is increased.

On the other hand, as described above, although a plurality of throttle bodies 25, 35, 45, 55 are formed, the shutters 26, 36, 46, 56 are uniformly opened by the link 72 so that the The phenomenon that the driving wind is supplied to the cylinder or blocked is prevented.

In particular, the present invention has a greater effect when applied to an engine for automobiles that frequently perform high-speed driving and instantaneous acceleration.

The present invention configured as described above is formed such that one end of the plurality of air ducts protrude out of the bonnet so that sufficient running wind can be introduced into the air duct connected to the intake port of the engine, and if necessary, through the auxiliary fuel injector Since a large amount of fuel is formed to be injected, there is a greater effect when applied to a racing vehicle that frequently has high power or instantaneous rapid acceleration.

Claims (10)

In the intake system which introduces combustion air into the engine, One end is connected to the intake port of each cylinder of the engine, the other end is a plurality of air ducts 20, 30, 40 exposed to the front of the vehicle through the outside air inlet 92 formed in the bonnet 90 of the engine 50; The front end of the plurality of air ducts (20, 30, 40, 50) is mounted in an open shape to receive the driving wind of the vehicle, and adjusts the air intake in conjunction with the driver's operation of the accelerator pedal. A throttle body (25) (35) (45) (55) having shutters (26) (36) (46) (56) which are rotatable and open to operate; Intake system structure of the engine for driving wind inlet, characterized in that configured to include. The method of claim 1, The air ducts 20, 30, 40, 50 are composed of upper tubes 21, 31, 41, 51 and lower tubes 22, 32, 42, 52. The connection part between the upper and lower pipes is a driving wind, characterized in that the surge tank 60 of the box is connected to each air duct 20, 30, 40, 50 is connected so as to communicate with each other Engine intake structure for inflow. The method of claim 1, The shutters 26, 36, 46, and 56 formed inside the respective throttle bodies 25, 35, 45, 55 may be opened and closed uniformly by the driver's accelerator pedal operation. An intake system structure of an engine for driving wind inflow, characterized in that the switchgear (27) (37) (47) (57) is connected by a link (72). The method of claim 2, The air ducts 20, 30, 40, 50 are the diameter of the upper tube 21, 31, 41, 51 is the diameter of the lower tube 22, 32, 42, 52 The taper pipes 23, 33, 43, 53, which are formed to be larger but have an upper tube extended in a predetermined section to the inside of the surge tank 60, are provided in the lower pipes 22, 32, 42. Intake system structure of the engine for driving wind inlet, characterized in that extending to the top of the 52). The method of claim 1, The air intake system structure of the engine for driving wind inflow, characterized in that the front of the throttle body (25) (35) (45) (55) is respectively equipped with an air filter (70) for filtering foreign substances in the atmosphere to be sucked in. . The method of claim 1, The fuel injector 73 for fuel injection is mounted in the middle of the lower pipes 22, 32, 42 and 52 of the air ducts 20, 30, 40 and 50. Engine intake structure for inflow of air. The method of claim 6, An auxiliary fuel injector (74) is formed inside the surge tank (60) to increase the fuel injection amount. The method of claim 7, wherein The auxiliary fuel injector 74 is an intake system structure of the engine for driving wind inflow, characterized in that configured to enable the driver to selectively operate. The method of claim 2, The flange 86 of the upper portion of the surge tank 60 and the lower flange 82 of the upper pipes 21, 31, 41, and 51 are fastened by bolts 84 so that the lower flange 82 is surged. Intake system structure of the engine for driving wind inflow, characterized in that to form the upper surface of the tank (60). The method of claim 9, An intake system structure of an engine for driving wind inflow, characterized in that a gasket (85) is interposed between the lower flange (82) and the upper surface of the surge tank (60) for airtightness.