CN205297791U - Air inlet device with bypass pipeline - Google Patents

Abstract

The utility model discloses an air inlet device with bypass pipeline, its group locate between the cylinder head and an air cleaner of an engine of a locomotive, include: a throttle body, a bypass pipe, admit air a manifold and the connecting piece that admits air. Wherein, throttle body and air cleaner intercommunication, the bypass pipe has bypass pipe entry and bypass pipe export, bypass pipe entry and throttle body intercommunication, manifold and throttle body intercommunication admit air, the connecting piece clamp that admits air is located the cylinder head and is admitted air between the manifold, and the cylinder head is equipped with an at least intake duct, and the connecting piece that admits air has admit air entry, admit air an export and a by -pass, the admit air entry and the manifold intercommunication that admits air, admit air export and intake duct intercommunication, two ends of by -pass respectively with the bypass pipe export and the export intercommunication that admits air. Through the independent component of the connecting piece that admits air, can not need modify the cylinder head mould, do not need countercylinder head processing drilling yet, can form the bypass air flue, the province's manpower that can save time during the equipment operation, and then can save whole assembly costs.

Description

The air intake installation of tool bypass line

Technical field

This utility model is about a kind of air intake installation having bypass line, the air intake installation of espespecially a kind of tool bypass line suitable in locomotive engine.

Background technology

In the engine design of general locomotive, cooperating between the design of its air inlet pipeline and engine is particularly important, such as, engine is when microrunning or title slow-speed of revolution operating, the sectional area of its required air inlet pipeline is less, length is longer, so can be conducive to improving the gas flow rate in air inlet pipeline, and therefore strengthen effect of inertia and pulsation effect, and then promote intake efficiency, increase engine torque. Otherwise, engine is in fast turn-around or when claiming high rotation speed operation, and the sectional area of its required air inlet pipeline is relatively big, length is shorter, so can reduce flow resistance, thus is conducive to the lifting of intake efficiency, and then improves combustion process, promotes horsepower.

But, the design of general its air inlet pipeline of locomotive engine is only capable of all fixing to its sectional area and length, thus it is only capable of meeting slow-speed of revolution operating or high rotation speed operation one of which air inlet demand, and the intake efficiency requirement of universe rotating speed cannot be coordinated, cause the behavior in service of another kind of rotating speed to take into account.

In addition, in the engine design of general motor vehicles such as locomotive, in order to improve engine combustion process to improve efficiency of combustion, except fuel oil Homogeneous phase mixing engine air admittance and atomizer sprayed emphatically, also try on the other hand allow engine air admittance produce rotation, rolling movement. That is, generally make air inlet can produce vortex effect in the design of engine, therefore make engine further reduce oil consumption, reach oligosaprobic lean burn.

For controlling engine when low-load, the flow field state of air intake structure. Existing technological means adopts the geometry changing air inlet port or uses variable air inlet mechanism, produces the motion of vortex and rolling, reaches the effect that burning improves.But to higher vortex and rolling movement, then need the narrow contracting again of air inlet port area, but will cause that high-load region cannot operate. So for overcome above-mentioned problem, make hence with the gas handling system of tool bypass line that Flow field is more powerful makes burning more rapid.

Refer to the air intake installation schematic diagram of the existing locomotive engine tool bypass line of Fig. 1, this air intake installation with bypass line is arranged between a cylinder head 11 and an air filter 35 of an engine 1 of a locomotive, and air intake installation includes: air inlet pipe 30, atomizer 25 and a bypass line 37.

As shown in Figure 1, air inlet pipe 30 content is provided with a throttle valve body 33, air inlet pipe 30 is defined an inlet manifold 32 and air inlet supervisor 31 by throttle valve body 33 respectively, throttle valve body 33 content is provided with a choke valve 23, inlet manifold 32 also connects with the cylinder head 11 of engine 1, and air inlet supervisor 31 also connects with air filter 35. The cylinder head 11 of engine 1 has air intake duct 12 and an exhaust duct 13, and atomizer 25 is then positioned adjacent in the inlet manifold 32 of the air intake duct 12 of cylinder head 11, and therefore, fuel oil mixes with air in the combustor entering back into engine 1 lights generation power. Again, bypass pipe 37 includes bypass line entrance 371 and bypass line outlet 372, and bypass pipe entrance 371 is to be responsible for 31 with air inlet to connect, and bypass pipe outlet 372 then connects with air intake duct 12, and in intake valve 14 1 preset distance of distance cylinder head 11.

Though this kind of design can make the air velocity of air inlet accelerate, and improves the effect of vortex, to obtain thin oil deflagrate, reach low stain. So being positioned at cylinder head 11 because its bypass pipe exports 372, it must process boring to form airway on one side in cylinder head 11. When volume production, not only need amendment cylinder head 11 mould and bypass air flue processing time consuming. If cylinder head 11 has two air intake ducts 12, the mould of cylinder head 11 is more complicated, also more difficult processing.

Utility model content

This utility model provides a kind of air intake installation having bypass line, for solving the problems referred to above of prior art, being designed by the by-pass of air inlet connector, making equally, the disturbance of charge air flow in cylinder is more strong, improve vortex effect, thin oil deflagrate can be made, reach in effect situation of low stain, amendment cylinder head mould can not be needed, do not need cylinder head processing boring yet, can forming bypass air flue, can save time during assembling operation human-saving, and then can save overall package cost.

The air intake installation of tool bypass line of the present utility model is mounted between a cylinder head and an air filter of an engine of a locomotive, including: a throttle valve body, bypass line, an inlet manifold and an air inlet connector. Wherein, throttle valve body connects with air filter; Bypass pipe includes bypass line entrance and bypass line outlet, and bypass pipe entrance connects with throttle valve body; Inlet manifold connects with throttle valve body; Air inlet connector is located between cylinder head and inlet manifold, cylinder head is provided with at least one air intake duct, air inlet connector includes an air inlet, a gas entry outlet and at least one by-pass, air inlet connects with inlet manifold, gas entry outlet connects with at least one air intake duct, and two ends of this at least one by-pass connect with bypass pipe outlet and gas entry outlet respectively.

Above-mentioned at least one by-pass is oblique runs through air inlet connector, so that the airintake direction of this by-pass is towards the air inlet passage center of cylinder head.

Above-mentioned at least one air intake duct can be two air intake ducts, and this at least one by-pass is alternatively two by-passes, and the airintake direction of this two by-pass is then respectively facing the center of two air intake ducts.

An idle speed control pipeline can be installed with in above-mentioned throttle valve body, idle speed control pipeline includes the idle speed control line entry and the idle speed control tube outlet that connect with throttle valve body, this idle speed control pipeline content are provided with an IAC, can control the idle speed air admission amount of this idle speed control pipeline.

Two throttle valve plates can be provided with in above-mentioned throttle valve body, and this bypass pipe entrance is between this two throttle valve plate.

Above-mentioned air inlet connector can be fixedly arranged on this cylinder head, it is possible to is fixedly arranged on inlet manifold.

Air intake installation according to tool bypass line of the present utility model, designed by the by-pass of air inlet connector, making equally, the disturbance of charge air flow in cylinder is more strong, improves vortex effect, can make thin oil deflagrate, reach in effect situation of low stain, amendment cylinder head mould can not be needed, also do not need, to cylinder head processing boring, bypass air flue to be formed, can be saved time during assembling operation human-saving, and then can save overall package cost.

Accompanying drawing explanation

The air intake installation schematic diagram of the existing locomotive engine tool bypass line of Fig. 1 system.

The combination cross-sectional schematic of Fig. 2 system this utility model one preferred embodiment.

The decomposition cross-sectional schematic of Fig. 3 system this utility model one preferred embodiment.

[symbol description]

1 engine 11 cylinder head

12 air intake duct 13 exhaust ducts

14 intake valve 23 choke valves

25 atomizer 30 air inlet pipe

32 inlet manifold are responsible in 31 air inlets

33 throttle valve body 35 air filters

37 bypass pipe 371 bypass pipe entrances

372 bypass pipes export 40 engines

41 cylinder head 42 air intake ducts

50 throttle valve body 55 idle speed control pipelines

551 idle speed control line entry 552 idle speed control tube outlet

553 IAC 56 throttle valve plates

57 throttle valve plate 60 bypass pipes

61 bypass pipe entrance 62 bypass pipe outlets

65 inlet manifold 66 atomizers

70 air inlet connector 71 air inlet

72 gas entry outlet 73 by-passes

80 air filters

Detailed description of the invention

Understand for the ease of persons skilled in the art and realize this utility model, describing embodiment of the present utility model in conjunction with accompanying drawing.

Refer to Fig. 2 and Fig. 3, its respectively this utility model one preferred embodiment combination cross-sectional schematic and decompose cross-sectional schematic. The air intake installation of the tool bypass line of the present embodiment is mounted between a cylinder head 41 and an air filter 80 of an engine 40 of a locomotive, and this air intake installation includes: a throttle valve body 50, bypass line 60, inlet manifold 65 and an air inlet connector 70.

As it can be seen, throttle valve body 50 connects with this air filter 80. In throttle valve body 50, group is provided with an idle speed control pipeline 55, and idle speed control pipeline 55 includes idle speed control line entry 551 and the idle speed control tube outlet 552 connected with throttle valve body 50, and this idle speed control pipeline 55 content is provided with an IAC 553. In the present embodiment, IAC 553 is an electromagnetic valve, can control the idle speed air admission amount of this idle speed control pipeline 55. Additionally, also group is provided with two throttle valve plates 56,57 in throttle valve body 50.

Bypass pipe 60 includes bypass line entrance 61 and bypass line outlet 62, and bypass pipe entrance 61 connects with throttle valve body 50, and bypass pipe entrance 61 is positioned between this two throttle valve plate 56,57. Additionally, inlet manifold 65 connects with throttle valve body 50, and on inlet manifold 65, group is provided with an atomizer 66, in order to spray fuel oil.

Air inlet connector 70 is located between cylinder head 41 and inlet manifold 65, cylinder head 41 is provided with at least one air intake duct 42, air inlet connector 70 includes air inlet 71, gas entry outlet 72 and an at least one by-pass 73, air inlet 71 connects with inlet manifold 65, gas entry outlet 72 connects with at least one air intake duct 42, and two ends of this at least one by-pass 73 connect with the gas entry outlet 72 of bypass pipe outlet 62 and air inlet connector 70 respectively. In the present embodiment, this cylinder head 41 is provided with an air intake duct 42, and therefore, air inlet connector 70 is also provided with bypass channel 73, the airintake direction of this by-pass 73 is respectively facing the center of this air intake duct 42 and the oblique wall thickness running through this air inlet connector 70 in this by-pass 73. Relatively, if cylinder head 41 is provided with two air intake ducts, then air inlet connector also can be provided with two by-passes, and the airintake direction of this two by-pass is respectively facing the center of this two air intake duct, and gives explanation. Additionally, in the present embodiment, air inlet connector 70 is fixedly arranged on cylinder head 41 by spiral lock.

The present embodiment by-pass 73 by air inlet connector 70, can not need amendment cylinder head 41 mould, does not also need, to cylinder head 41 processing boring, to form bypass air flue, and can save time during assembling operation human-saving, and then can save overall package cost.

Although depicting this utility model by embodiment, but skilled addressee will appreciate that, when without departing from spirit of the present utility model and essence, so that it may making this utility model have many deformation and change, scope of the present utility model is limited to the appended claims.

Claims (6)

1. the air intake installation having bypass line, it is characterised in that described air intake installation is mounted between a cylinder head and an air filter of an engine of a locomotive, including:

One throttle valve body, connects with this air filter;

Bypass line, exports including bypass line entrance and bypass line, and this bypass pipe entrance connects with this throttle valve body;

One inlet manifold, connects with this throttle valve body; And

One air inlet connector, it is located between this cylinder head and this inlet manifold, this cylinder head is provided with at least one air intake duct, this air inlet connector includes an air inlet, a gas entry outlet and at least one by-pass, this air inlet connects with this inlet manifold, this gas entry outlet connects with this at least one air intake duct, and two ends of this at least one by-pass connect with the outlet of this bypass pipe and this gas entry outlet respectively.

2. the air intake installation having bypass line as claimed in claim 1, it is characterised in that this at least one by-pass is oblique runs through this air inlet connector.

3. the air intake installation having bypass line as claimed in claim 1, it is characterised in that this at least one air inlet Dow Jones index two air intake duct, this by-pass, at least one bypass Dow Jones index two, the airintake direction of this two by-pass is respectively facing the center of this two air intake duct.

4. the air intake installation having bypass line as claimed in claim 1, it is characterized in that, an idle speed control pipeline it is provided with in this throttle valve body, it includes the idle speed control line entry and the idle speed control tube outlet that connect with this throttle valve body, and this idle speed control pipeline content is provided with an IAC.

5. the air intake installation having bypass line as claimed in claim 1, it is characterised in that this throttle valve body is interior and is provided with two throttle valve plates, and this bypass pipe entrance is between this two throttle valve plate.

6. the air intake installation having bypass line as claimed in claim 1, it is characterised in that this air inlet connector is fixedly arranged on this cylinder head.