TWM518660U - Intake device having bypass line - Google Patents

Description

Air intake device with bypass line

The present invention relates to an air intake device with a bypass pipeline, and more particularly to an air intake device with a bypass pipeline suitable for a locomotive engine.

In the engine design of a general locomotive, the design of the intake line and the interaction between the engines are extremely important. For example, when the engine is running at a slow speed or a low speed, the cross-sectional area of the intake line required is relatively high. Small and long, this can help to increase the gas flow rate in the intake line, and thus enhance the inertia and pulsation effects, thereby improving the intake efficiency and increasing the engine torque. Conversely, when the engine is running at a high speed or at a high speed, the required intake line has a large cross-sectional area and a short length, which can reduce the flow resistance, thereby facilitating the improvement of the intake efficiency and thereby improving the combustion process. Improve horsepower.

However, the design of the intake circuit of the general locomotive engine can only fix its cross-sectional area and length, so it can only meet one of the air intake requirements of low-speed operation or high-speed operation, and cannot meet the air intake efficiency requirement of the global speed. , the other speed of running performance can not be balanced.

In addition, in the engine design of a general motor vehicle such as a locomotive, in order to improve the combustion process of the engine to improve the combustion efficiency, in addition to focusing on uniformly mixing the engine intake air with the fuel injected from the injector, on the other hand, it is also trying to make the engine intake. Produces a rotating, rolling motion. That is to say, the design of the engine generally allows the intake air to have a swirling effect, thereby further reducing the fuel consumption and achieving a lean combustion with low pollution.

To control the flow field state of the intake structure at low load. The conventional technical means is to change the geometry of the intake enthalpy or use a variable air intake mechanism to generate vortex and roll motion to achieve a combustion improvement effect. However, if a stronger vortex and tumbling motion is required, the intake enthalpy area needs to be narrowed again, but the high load area will be inoperable. Therefore, in order to overcome the above problems, the intake system with the bypass line is used to make the flow field in the cylinder stronger and the combustion is faster.

Please refer to FIG. 1 for a schematic diagram of an air intake device of a bypass line of a locomotive engine. The air intake device having a bypass line is disposed on a cylinder head 11 and an air cleaner 35 of one of the engines of the locomotive. Between the air intake devices, there are: an intake pipe 30, an injector 25 and a bypass pipe 37.

As shown in FIG. 1 , the intake pipe 30 is provided with a throttle body 33. The throttle body 33 defines an intake manifold 32 and an intake manifold 31, and a throttle body 33, respectively. The content is provided with a throttle valve 23, the intake manifold 32 is in communication with the cylinder head 11 of the engine 1, and the intake main pipe 31 is in communication with the air cleaner 35. The cylinder head 11 of the engine 1 has an intake passage 12 and an exhaust passage 13, and the injector 25 is disposed on the intake manifold 32 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. Further, the bypass pipe 37 includes a bypass pipe inlet 371 and a bypass pipe outlet 372, the bypass pipe inlet 371 is in communication with the intake main pipe 31, and the bypass pipe outlet 372 is in communication with the intake pipe 12, and the distance The intake valve 14 of one of the cylinder heads 11 is within a predetermined distance.

This design can speed up the airflow of the intake air and improve the effect of the vortex to obtain rapid combustion of the thin oil to achieve low pollution. Since the bypass outlet 372 is located within the cylinder head 11, it is necessary to machine a bore in the cylinder head 11 to form a bypass passage. In mass production, not only the cylinder head 11 mold needs to be modified, but also the side air passage processing takes time. If the cylinder head 11 has two intake passages 12, the mold of the cylinder head 11 is more complicated and less likely to be processed, which is not ideal and there is room for improvement.

The reason for the creator is that, in the spirit of actively inventing and creating, he thought of a "passing device with a bypass line" that can solve the above problems, and finally completed the new type after research and experiment.

The main purpose of the present invention is to provide an air intake device with a bypass line. The design of the bypass passage of the intake connecting member can also make the disturbance of the intake air flow in the cylinder more intense and improve the vortex effect. It can make the thin oil burn quickly and achieve the effect of low pollution. It can eliminate the need to modify the cylinder head mold, and does not need to drill the cylinder head to form the bypass air passage. It can save time and labor when assembling. It can save overall assembly costs.

In order to achieve the above object, the air intake device of the bypass line is assembled between a cylinder head of one engine of an locomotive and an air cleaner, and includes: a throttle body and a bypass pipe. An intake manifold and an intake connection. Wherein, the throttle body is in communication with the air cleaner; the bypass pipe includes a bypass pipe inlet and a bypass pipe outlet, the bypass pipe inlet is in communication with the throttle body; and the intake manifold is connected to the throttle body; The intake connecting member is disposed between the cylinder head and the intake manifold, and the cylinder head is provided with at least one intake passage, and the intake connecting member comprises an intake inlet, an intake outlet and at least one bypass passage, and the intake inlet is The intake manifold is in communication, and the intake outlet is in communication with at least one intake passage, and the two ends of the at least one bypass passage are respectively in communication with the bypass conduit outlet and the intake outlet.

The at least one bypass passage extends obliquely through the intake connecting member such that the intake direction of the bypass passage faces the center of the intake port of the cylinder head.

The at least one inlet passage may be a two-inlet passage, and the at least one bypass passage may also be a two-pass passage, and the intake directions of the two bypass passages respectively face the center of the two intake passages.

The throttle body may be provided with an idle control pipeline, and the idle control pipeline includes an idle control pipeline inlet and an idle control pipeline outlet connected to the throttle body, and the idle control pipeline has a content An idle speed control valve controls the idle intake air volume of the idle speed control line.

The throttle body may be provided with two throttle plates, and the bypass inlet is located between the two throttle plates.

The air inlet connector may be fixed to the cylinder head or may be fixed to the intake manifold.

Please refer to FIG. 2 and FIG. 3 , which are respectively a schematic cross-sectional view and an exploded cross-sectional view of a preferred embodiment of the present invention. The air intake device with the bypass line of the embodiment is disposed between the cylinder head 41 of one of the engines 40 of the locomotive and an air cleaner 80. The air intake device includes: a throttle body 50 A bypass pipe 60, an intake manifold 65 and an intake connection 70 are provided.

As shown, the throttle body 50 is in communication with the air cleaner 80. An idle control line 55 is disposed in the throttle body 50, and the idle control line 55 includes an idle control line inlet 551 and an idle control line outlet 552 communicating with the throttle body 50, and the idle speed control The line 55 is provided with an idle speed control valve 553. In the present embodiment, the idle speed control valve 553 is a solenoid valve that controls the idle intake air amount of the idle speed control line 55. Further, two throttle plates 56, 57 are disposed in the throttle body 50.

The bypass pipe 60 includes a bypass pipe inlet 61 and a bypass pipe outlet 62. The bypass pipe inlet 61 communicates with the throttle body 50, and the bypass pipe inlet 61 is located between the two throttle plates 56, 57. In addition, the intake manifold 65 is in communication with the throttle body 50, and an intake nozzle 66 is disposed on the intake manifold 65 for injecting fuel.

The intake connecting member 70 is interposed between the cylinder head 41 and the intake manifold 65. The cylinder head 41 is provided with at least one intake passage 42. The intake connecting member 70 includes an intake inlet 71 and an intake outlet 72. At least one bypass passage 73, the intake inlet 71 is in communication with the intake manifold 65, the intake outlet 72 is in communication with the at least one intake passage 42, and the two ends of the at least one bypass passage 73 are respectively connected to the bypass conduit outlet 62 and the intake air. The intake port 72 of the member 70 is in communication. In the present embodiment, the cylinder head 41 is provided with an intake passage 42. Therefore, the intake connecting member 70 is also provided with a bypass passage 73, and the intake direction of the bypass passage 73 faces the center of the intake passage 42 respectively, and The bypass passage 73 extends obliquely through the wall thickness of the intake connecting member 70. In contrast, if the cylinder head 41 is provided with two intake ports, the intake connecting member is also provided with two bypass passages, and the intake directions of the two bypass passages are respectively directed toward the center of the two intake passages, and will be described. Further, in the present embodiment, the intake connecting member 70 is fixed to the cylinder head 41 by a screw lock member.

In this embodiment, the bypass passage 73 of the intake connecting member 70 can eliminate the need to modify the cylinder head 41 mold, and does not need to drill the cylinder head 41 to form a bypass air passage, which can save time and labor when assembling. This in turn saves overall assembly costs.

1‧‧‧ engine
11‧‧‧Cylinder head
12‧‧‧ Inlet
13‧‧‧Exhaust Road
14‧‧‧Intake valve
23‧‧‧ throttle valve
25‧‧‧Injector
30‧‧‧Intake pipe
31‧‧‧Air intake supervisor
32‧‧‧Intake manifold
33‧‧‧ throttle body
35‧‧‧Air filter
37‧‧‧bypass
371‧‧‧ Bypass inlet
372‧‧‧ Bypass outlet
40‧‧‧ Engine
41‧‧‧Cylinder head
42‧‧‧ Inlet
50‧‧‧ throttle body
55‧‧‧Idle speed control line
551‧‧‧Idle speed control line inlet
552‧‧‧Idle speed control line outlet
553‧‧‧Idle speed control valve
56‧‧‧ throttle valve
57‧‧‧ throttle valve
60‧‧‧bypass
61‧‧‧ Bypass inlet
62‧‧‧ Bypass outlet
65‧‧‧Intake manifold
66‧‧‧Injector
70‧‧‧Intake connection
71‧‧‧Intake inlet
72‧‧‧Air intake
73‧‧‧bypass
80‧‧‧Air filter

FIG. 1 is a schematic diagram of an air intake device of a bypass line of a conventional locomotive engine. 2 is a schematic cross-sectional view of a preferred embodiment of the present invention. 3 is a schematic cross-sectional view of a preferred embodiment of the present invention.

40‧‧‧ Engine

41‧‧‧Cylinder head

42‧‧‧ Inlet

50‧‧‧ throttle body

55‧‧‧Idle speed control line

551‧‧‧Idle speed control line inlet

552‧‧‧Idle speed control line outlet

553‧‧‧Idle speed control valve

56‧‧‧ throttle valve

57‧‧‧ throttle valve

60‧‧‧bypass

62‧‧‧ Bypass outlet

65‧‧‧Intake manifold

66‧‧‧Injector

70‧‧‧Intake connection

71‧‧‧Intake inlet

72‧‧‧Air intake

73‧‧‧bypass

Claims (6)

An air intake device with a bypass line is disposed between a cylinder head of one of the engines of a locomotive and an air cleaner, and includes: a throttle body connected to the air filter; The through pipe includes a bypass pipe inlet and a bypass pipe outlet, the bypass pipe inlet is in communication with the throttle body; an intake manifold is connected to the throttle body; and an intake connection member Between the cylinder head and the intake manifold, the cylinder head is provided with at least one intake port, the intake connection includes an intake inlet, an intake outlet and at least one bypass passage, the intake inlet and the inlet The intake manifold is in communication with the at least one intake passage, and the two ends of the at least one bypass passage are in communication with the bypass outlet and the intake outlet, respectively. The air intake device with a bypass line according to claim 1, wherein the at least one bypass channel extends obliquely through the air inlet connector. The air intake device with a bypass pipeline according to claim 1, wherein the at least one air inlet refers to two air intake passages, and the at least one bypass passage refers to two bypass passages, and the two bypass passages The intake direction is directed toward the center of the two intake ports, respectively. An air intake device with a bypass line according to claim 1, wherein the throttle body is provided with an idle control line including an idle control line connected to the throttle body The inlet and an idle control line outlet, the idle control line is provided with an idle speed control valve. The air intake device with a bypass line according to claim 1, wherein the throttle body is provided with two throttle plates, and the bypass pipe inlet is located between the two throttle plates . The air intake device with a bypass line according to claim 1, wherein the air intake connector is fixed to the cylinder head.