CN104389704A - Visualized internal combustion engine air passage device - Google Patents
Visualized internal combustion engine air passage device Download PDFInfo
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- CN104389704A CN104389704A CN201410627878.8A CN201410627878A CN104389704A CN 104389704 A CN104389704 A CN 104389704A CN 201410627878 A CN201410627878 A CN 201410627878A CN 104389704 A CN104389704 A CN 104389704A
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- intake manifold
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- combustion engine
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Abstract
The invention mainly relates to a visualized internal combustion engine air passage device, and aims at conveniently studying the mixing effect of fuel or waste gas and air and the distribution uniformity of waste gas or combustible mixing gas of each manifold. The visualized internal combustion engine air passage device comprises a visualized air inlet main pipe, a visualized air inlet manifold and a manifold outlet flange, wherein the visualized air inlet main pipe and the visualized air inlet manifold are made of transparent materials. After the visualized internal combustion engine air passage device is used, in the air inlet process that the fuel sprays or the waste gas re-circulates and enters the main pipe to be mixed with the air, the fuel or the waste gas re-circulation and air mixing conditions can be recorded in a mode such as a photo taking or recording mode, the flowing and mixing conditions in the air passage are analyzed, and the mixing degree of the fuel, the waste gas and the air or the distribution uniformity of each manifold is studied.
Description
Technical field:
The present invention relates generally to the air inlet system be specially adapted on internal-combustion engine, relates to a kind of visual air passage of internal combustion engine device further.
Background technique:
In recent years, substitute fuel is widely applied on the engine, based on fuel physical property feature, part substitute fuel can directly and gasoline, diesel oil blending burn; And with the substitute fuel of gasoline, diesel oil blending by air flue nozzle spray patterns, inflammable mixture can not be mixed to form with air and enter cylinder combustion.The latter when not changing engine structure, air flue installs nozzle usually, and substitute fuel is sprayed into air flue.
Air flue nozzle is arranged on intake manifold or intake manifold usually.In manifold injection mode, the fuel injection amount of each manifold is easily consistent, and the substitute fuel inlet of each manifold of the more difficult control of intake manifold's spray regime.Each manifold substitute fuel inlet is inconsistent, and each cylinder combustion case of motor can be caused different, and each cylinder pressure gap is comparatively large, the mechanical shock of aggravation motor, and engine power exports and reduces simultaneously, and each cylinder discharge is inconsistent, and overall engine discharge raises.
Meanwhile, substitute fuel mixes with air after spraying in air flue.The uniformity of fuel and air mixing, has material impact to engine performance.Mixed Daqu is uneven, and the dense mixed zone of easy generating portion, causes deterioration of emission after in-cylinder combustion, and after comparatively weak mixture enters cylinder, causes engine power to export and decline.
Engine exhaust gas recirculating technique (EGR) effectively can reduce nitrogen oxide (NOx) discharge.Portion is imported intake manifold again, enters manifold with air-flow, is dispensed to each cylinder.Diesel engine intake house steward is generally side-mounted, and cause each manifold outlet place Pressure Drop different, mean velocity is different, and each cylinder enters air quantity and there are differences, and this also can cause the distributing uniformity of each cylinder waste gas there are differences.When waste gas distributes few, less to in-cylinder combustion function influence, NOx emission reduces not obvious.When waste gas distributes many, easily cause in-cylinder combustion incomplete, Power output reduces.
Therefore, need a kind of visual air passage of internal combustion engine device, by this process by take pictures or the mixing situation of mode to fuel or EGR and air such as video recording carries out record, or by technological means such as schlieren method or ion test the speed, analyze the flowing in air flue, mixing situation, research air flue fuel spraying mixing situation or waste gas mix situation and each manifold distributed uniform situation with air.
Summary of the invention:
The mixed effect to fuel and air conveniently and each manifold inflammable mixture distributing uniformity or waste gas and air mixed effect and each manifold waste gas distributing uniformity are studied, the invention provides a kind of visual air passage of internal combustion engine device, analyze the uniformity situation that the formational situation of inflammable mixture in air flue fuel spraying mixing situation and each manifold or waste gas distribute with the situation that mixes and each manifold waste gas of air.
Visual air passage of internal combustion engine device, comprising: visual intake manifold (14), visual intake manifold (17,18,19,20,21,22) and manifold outlet flange (15); The import of visual intake manifold is connected with engine air inlet tube, and the outlet of visual intake manifold is connected with engine cylinder cover suction port by manifold outlet flange; Described visual intake manifold and visual intake manifold are transparent material.
Length, the cross section parameters of described visual intake manifold are identical with intake manifold's parameter of actual test motor; Described visual intake manifold quantity, between spacing, sectional area parameter identical with the parameter of the intake manifold of actual test engine; Described visual intake manifold and visual intake manifold are high printing opacity acrylic material.
Preferably, also comprise: be positioned at the flowmeter mount inlet in each visual intake manifold, in order to install flowmeter, measure respective flow.
After using apparatus of the present invention, to spray or EGR enters in the intake process that house steward mixes with air at fuel, by to take pictures or the mixing situation of mode to fuel or EGR and air such as video recording carries out record, or by technological means such as schlieren method or ion test the speed, flowing in air flue, mixing situation are analyzed, the research degree of mixing of fuel, waste gas and air or the distributing uniformity of each manifold.
Accompanying drawing illustrates:
Fig. 1 is the embodiment of the present invention 1 assembly structure schematic diagram on the engine; In figure, 1 represents visual air flue, and 2 represent motor, and 3 represent outlet pipe, and 4 represent intake manifold, 5 represent oil sprayer, and 6 represent oily rail, and 7 represent injector controller, and 8 represent pressure-limit valve, and 9 represent filter cleaner, 10 represent oil pump, and 11 represent fuel tank, and 12 represent flowmeter, and 13 represent exhaust gas recirculation valve.
Fig. 2 is the structural representation of visual air flue 1 in dotted line frame in Fig. 1; In figure, 14 represent visual intake manifold, and 15 represent flange, and 16 represent flange through hole, and 17,18,19,20,21,22 represent visual manifold, and 23 represent flowmeter mount inlet.
Embodiment:
Embodiment 1:
Contrast Fig. 1 and Fig. 2, a kind of system of testing six cylinder engine airway parameters, comprising: visual air passage of internal combustion engine 1, motor 2, outlet pipe 3, intake manifold 4, oil sprayer 5, oil rail 6, injector controller 7, pressure-limit valve 8, filter cleaner 9, oil pump 10, fuel tank 11, flowmeter 12, exhaust gas recirculation valve 13, visual intake manifold 14, manifold outlet flange 15, flange through hole 16, visual intake manifold 17,18,19,20,21,22, flowmeter mount inlet 23.
Manifold outlet flange 15 is connected by flange through hole 16 with institute test engine suction port, is arranged on real engine by visual air passage of internal combustion engine device; Visual intake manifold 14 is connected with the suction tude of institute's test engine; Before the nozzle that fuel manifold sprays is in visualization device; Waste gas flows in intake manifold 4 through exhaust gas recirculation valve 13.
In fuel injection and gas inlet process, by to take pictures or the mixing situation of form to fuel and waste gas such as video recording carries out record, or by technological means such as schlieren method or ion test the speed, flowing in air flue, mixing situation are analyzed, research fuel or the degree of mixing of waste gas and air and the distributing uniformity of each manifold.
Embodiment 2:
In the present embodiment except following characteristics with embodiment 1: in described visual air passage of internal combustion engine device, intake manifold number is 4.
The various embodiments described above are the mode of execution that the present invention comparatively commonly uses; the high acrylic material thoroughly of visual airway device material selection in the various embodiments described above; but present embodiment is not restricted to the described embodiments; when not running counter to Spirit Essence of the present invention and principle; the change that other mode of execution makes, modification, substitute, combination, to simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. visual air passage of internal combustion engine device, is characterized in that, comprising: visual intake manifold (14), visual intake manifold (17,18,19,20,21,22) and manifold outlet flange (15); The import of visual intake manifold is connected with engine air inlet tube, and the outlet of visual intake manifold is connected with engine cylinder cover suction port by manifold outlet flange; Described visual intake manifold and visual intake manifold are transparent material.
2. visual air passage of internal combustion engine device according to claim 1, is characterized in that: length, the cross section parameters of described visual intake manifold are identical with intake manifold's parameter of actual test motor.
3. visual air passage of internal combustion engine device according to claim 1, is characterized in that: described visual intake manifold quantity, between spacing, sectional area parameter identical with the parameter of the intake manifold of actual test engine.
4. visual air passage of internal combustion engine device according to claim 1, is characterized in that: also comprise: be positioned at the flowmeter mount inlet in each visual intake manifold, in order to install flowmeter, measures respective flow.
5., according to Claims 1-4 visual air passage of internal combustion engine device described in any one, it is characterized in that: described visual intake manifold and visual intake manifold are high printing opacity acrylic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410627878.8A CN104389704A (en) | 2014-11-10 | 2014-11-10 | Visualized internal combustion engine air passage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410627878.8A CN104389704A (en) | 2014-11-10 | 2014-11-10 | Visualized internal combustion engine air passage device |
Publications (1)
| Publication Number | Publication Date |
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| CN104389704A true CN104389704A (en) | 2015-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410627878.8A Pending CN104389704A (en) | 2014-11-10 | 2014-11-10 | Visualized internal combustion engine air passage device |
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| CN (1) | CN104389704A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606365A (en) * | 2015-12-16 | 2016-05-25 | 中国船舶重工集团公司第七一一研究所 | Engine airway testing method |
| CN106050441A (en) * | 2016-06-21 | 2016-10-26 | 北京工业大学 | Engine inlet gas fuel injection visualization test device and test method |
| CN112012856A (en) * | 2020-03-05 | 2020-12-01 | 广西玉柴机器股份有限公司 | Air inlet pipeline structure capable of remarkably improving air inlet consistency of engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606365A (en) * | 2015-12-16 | 2016-05-25 | 中国船舶重工集团公司第七一一研究所 | Engine airway testing method |
| CN106050441A (en) * | 2016-06-21 | 2016-10-26 | 北京工业大学 | Engine inlet gas fuel injection visualization test device and test method |
| CN112012856A (en) * | 2020-03-05 | 2020-12-01 | 广西玉柴机器股份有限公司 | Air inlet pipeline structure capable of remarkably improving air inlet consistency of engine |
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Application publication date: 20150304 |
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