TWM455667U - Air intake device with bypass pipeline - Google Patents

Description

Air intake device with bypass line

This creation relates to an air intake device with a bypass line, and more particularly to an air intake device for a locomotive engine with a bypass line.

In the engine design of the general speed Keda locomotive, the design of the intake line and the interaction between the engines are extremely important, for example, the engine is required to cut the intake line at slow or low speed. The smaller area and longer length can be beneficial to increase the gas flow rate in the intake line, and thus enhance the inertia effect and the pulsation effect, thereby improving the intake efficiency and increasing the engine torque. Conversely, when the engine is at a fast or high speed, the required intake pipe has a large cross-sectional area and a short length, which can reduce the flow resistance, thereby facilitating the improvement of the intake efficiency, thereby improving the combustion process and improving horsepower.

Generally, the design of the intake line of the engine of the skating locomotive can only fix the cross-sectional area and length of the intake line, and in order to meet the different high and low speed requirements of the engine, it is solid on the intake line. There is a throttle valve that uses the opening of the throttle valve to control the gas flow rate and the overall intake air volume. However, because the engine is at idle speed and the speed is low, when the gas flows through the throttle valve, the gas flow rate increases due to the small gap of the throttle valve, but when the intake manifold is enlarged, the gas flow rate decreases, and the gas The better atomization effect is not achieved when the fuel is mixed, which will make the engine unstable when it is burning at idle speed, which is not ideal.

In order to solve the problem of poor fuel atomization of the above engine at idle speed, it is known to use a bypass control system to improve fuel atomization and achieve the effect of lean and stable combustion of the engine idle speed. At the same time, the bypass control system can also be used to initiate air volume compensation or idle air volume compensation when the high ground pressure is low. However, this method currently connects the air outlet of the bypass control system to the intake pipe or the fuel injection nozzle to help fuel atomization, so as to further improve the stability of the engine when burning, reduce fuel consumption, and The atomization of the fuel is more complete, and the creator is actively inventing the spirit of creation, and after several research and experiments, the creation is completed.

The air intake device of the bypass pipeline is disposed between a cylinder head of an engine of an locomotive and an air cleaner, and includes: an intake pipe, a fuel injector, a bypass pipe, and a side Through the control valve. The intake pipe has a throttle valve, and the throttle valve defines an intake manifold and an intake main, respectively, and the intake manifold communicates with the cylinder head of the engine, and the intake main pipe is combined with the air. The filter is connected. The fuel injector group is disposed on an intake manifold adjacent to one of the intake ports of the cylinder head; the bypass pipe includes a bypass pipe inlet and a bypass pipe outlet, and the bypass pipe inlet communicates with the intake main pipe, and the bypass pipe The outlet is in communication with the intake port and within a predetermined distance from one of the intake valves of the cylinder head; the bypass control valve is disposed on the bypass pipe.

Since the bypass pipe outlet is located within a predetermined distance from the intake valve of one of the cylinder heads, the air introduced through the bypass pipe can be made to the cylinder by positioning the bypass pipe outlet position close to the intake valve of the cylinder head. Air in the head It becomes a disturbance and produces the effect of vortexing, thereby increasing the kinetic energy, distributing the atomized fuel more evenly, and burning the fuel faster, thereby improving the stability of the engine.

The predetermined distance between the outlet of the bypass pipe and the intake valve of the cylinder head may be 5 cm or less, preferably 5 cm, so that the airflow introduced by the bypass pipe can directly generate gas directly to the internal combustion chamber of the cylinder head. The effect is to form a swirling effect.

The creation may further include a control unit that can be used to control the bypass control valve and thereby control the intake flow of the bypass.

The above control unit can be integrated into one of the locomotive's Electronic Control Unit (ECU). Of course, the above control unit can also be a separate component, which can achieve the function of controlling the intake air flow of the bypass pipe.

The bypass control valve described above can be integrated into an electronic control unit (ECU) of the locomotive. Of course, the above-mentioned bypass control valve can also be a separate component, and the control unit controls its actuation.

The bypass control valve may be a normally open valve body, and the intake air flow rate of the bypass pipe may be changed by changing the size of the normally open valve body, or by using a stepping motor, a solenoid valve, or other equivalent structure. The components can all function to control the intake air flow of the bypass pipe.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of an air intake device according to a first preferred embodiment of the present invention. The present embodiment is an air intake device with a bypass pipeline, which is disposed on a cylinder head of an engine 1 of a locomotive. 11 with an air filter 50 The utility model comprises: an intake pipe 20, an injector 25, a bypass pipe 27, a bypass control valve 29, and a control unit 60.

As shown in FIG. 1, the intake pipe 20 is provided with a throttle valve 23, and the throttle valve 23 defines an intake manifold 22 and an intake manifold 21, and an intake manifold 22, respectively. The cylinder head 11 of the engine 1 is in communication with the intake main pipe 21 and communicates with the air cleaner 50. The cylinder head 11 of the engine 1 has an intake passage 12 and an exhaust passage 13, and the injector nozzle 25 is disposed on the intake manifold 22 adjacent to the intake passage 12 of the cylinder head 11, whereby the fuel is mixed with the air. Re-into the combustion chamber of the engine 1 ignites to generate power.

The bypass pipe 27 includes a bypass pipe inlet 271 and a bypass pipe outlet 272. The bypass pipe inlet 271 is in communication with the intake main pipe 21, and the bypass pipe outlet 272 is in communication with the intake passage 12 and is located away from the cylinder head. One of the intake valves 14 is within a predetermined distance, and in the present embodiment, the predetermined distance is 5 cm. In addition, the bypass control valve 29 is fixed to the bypass pipe 27 for controlling the intake air flow rate of the bypass pipe 27. As for the control unit 60, it is electrically connected to the control bypass pipe 27, and the control unit 60 can control the bypass control valve 29 and thus the intake air flow rate of the bypass pipe 27.

Thereby, in addition to the air required for the idle speed of the engine 1 in this embodiment, the air is completely or partially provided by the bypass pipe 27, directly guiding the air to the combustion chamber of the cylinder head 11, and by bypassing the control valve 29. The control unit 60 controls the amount of the intake air to improve the fuel atomization, and achieves the effect of the lean and stable combustion of the engine 1 at idle speed, and can also cause disturbance to the air in the combustion chamber of the cylinder head 11 to generate a swirling effect. Thereby, the kinetic energy of the engine 1 can be increased, or the atomized fuel in the combustion chamber can be distributed more evenly, so that the fuel burns faster, thereby improving the stability of the engine 1.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of the air intake device according to the second preferred embodiment of the present invention. The structure of the present embodiment is substantially the same as that of the first embodiment, and the difference is only that the first embodiment is next to the first embodiment. The control valve is integrated into the electronic control unit (ECU) 33 of the locomotive, and the bypass inlet 371 of the present embodiment is adjacent to the throttle valve 23.

In detail, as shown in FIG. 2, the intake pipe 30 of the present embodiment is provided with a throttle valve 23, and the throttle valve 23 defines an intake manifold 32 and an intake air for the intake pipe 30, respectively. The main pipe 31, the intake manifold 32 communicates with the cylinder head 11 of the engine 1, and the intake main pipe 31 communicates with the air cleaner 50. Further, the bypass pipe 37 includes a bypass pipe inlet 371 and a bypass pipe outlet 372. The bypass pipe inlet 371 is adjacent to the throttle valve 23 to communicate with the intake main pipe 31, and the bypass pipe outlet 372 is connected to the intake port. 12 is connected and within a predetermined distance from the intake valve 14 of the cylinder head 11, which is a predetermined distance of 5 cm in this embodiment. The electronic control unit (ECU) 33 of the locomotive controls the flow of intake air to the bypass line 37.

Thereby, the embodiment can also achieve the function of the first embodiment, that is, the air required for the engine 1 at idle can be completely or partially provided by the bypass pipe 37 to directly guide the air to the combustion of the cylinder head 11. The air intake amount can be controlled by the electronic control unit 33 of the locomotive to improve the fuel atomization, achieve the effect of the lean and stable combustion of the engine 1 idle speed, and disturb the air in the combustion chamber of the cylinder head 11 to generate The effect of the vortex, thereby increasing the kinetic energy of the engine 1, or making the atomized fuel distribution in the combustion chamber more uniform, so that the fuel burns faster, thereby improving the stability of the engine 1.

The above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

1‧‧‧ engine

11‧‧‧Cylinder head

12‧‧‧ Inlet

13‧‧‧Exhaust Road

14‧‧‧Intake valve

20‧‧‧Intake pipe

21‧‧‧Air intake supervisor

22‧‧‧Intake manifold

23‧‧‧ throttle valve

25‧‧‧Injector

27‧‧‧bypass

271‧‧‧ Bypass inlet

272‧‧‧ Bypass outlet

29‧‧‧Bypass control valve

30‧‧‧Intake pipe

31‧‧‧Air intake supervisor

32‧‧‧Intake manifold

33‧‧‧Electronic Control Unit

37‧‧‧bypass

371‧‧‧ Bypass inlet

372‧‧‧ Bypass outlet

50‧‧‧Air filter

60‧‧‧Control unit

1 is a schematic view of an air intake device according to a first preferred embodiment of the present invention.

Figure 2 is a schematic view of the air intake device of the second preferred embodiment of the present invention.

1‧‧‧ engine

11‧‧‧Cylinder head

12‧‧‧ Inlet

13‧‧‧Exhaust Road

14‧‧‧Intake valve

20‧‧‧Intake pipe

21‧‧‧Air intake supervisor

22‧‧‧Intake manifold

23‧‧‧ throttle valve

25‧‧‧Injector

27‧‧‧bypass

271‧‧‧ Bypass inlet

272‧‧‧ Bypass outlet

29‧‧‧Bypass control valve

50‧‧‧Air filter

60‧‧‧Control unit

Claims (8)

An air intake device with a bypass line is disposed between a cylinder head of an engine of an locomotive and an air cleaner, and includes: an intake pipe, the content of which is provided with a throttle valve, The throttle valve includes an intake manifold and an intake manifold, respectively, and the intake manifold is in communication with the cylinder head of the engine, and the intake manifold is in communication with the air cleaner; a fuel injection nozzle disposed on the intake manifold adjacent to one of the intake ports of the cylinder head; a bypass pipe including a bypass pipe inlet and a bypass pipe outlet, the bypass pipe inlet and the The intake main pipe is connected, the bypass pipe outlet is connected to the intake port and is within a predetermined distance from an intake valve of the cylinder head; and a bypass control valve is disposed on the bypass pipe. The air intake device with a bypass line according to claim 1, wherein the predetermined distance is 5 cm. The air intake device with a bypass line as described in claim 1 further includes a control unit for controlling the bypass control valve. An air intake device with a bypass line as described in claim 3, wherein the control unit is integrated in an electronic control unit of the locomotive. The air intake device with a bypass line according to claim 1, wherein the bypass control valve is integrated in an electronic control unit of the locomotive. The air intake device with a bypass line according to claim 1, wherein the bypass control valve is a solenoid valve. The air intake device with a bypass pipeline according to claim 1, wherein the bypass pipe control valve is a normally open valve body. The air intake device with a bypass line according to claim 1, wherein the bypass pipe inlet is adjacent to the throttle valve.