CN104595071A - Air inlet system for naturally aspirated engine - Google Patents
Air inlet system for naturally aspirated engine Download PDFInfo
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- CN104595071A CN104595071A CN201410715050.8A CN201410715050A CN104595071A CN 104595071 A CN104595071 A CN 104595071A CN 201410715050 A CN201410715050 A CN 201410715050A CN 104595071 A CN104595071 A CN 104595071A
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- engine
- chamber
- air inlet
- connecting tube
- exhaust pipe
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- Characterised By The Charging Evacuation (AREA)
Abstract
The invention discloses an air inlet system for a naturally aspirated engine and belongs to the technical field of internal combustion engines. The system comprises an air inlet pipe of the engine, the engine, an exhaust pipe of the engine, a connecting pipe, an adjusting cavity, a movable plate, a spring and a control valve, wherein the movable plate is arranged in the adjusting cavity and is in sealed contact with the inner wall of the adjusting cavity, the movable plate is connected with the right wall of the adjusting cavity through a spring, one end of the second connecting pipe is communicated with the left wall of the adjusting cavity, the other end of the second connecting pipe is communicated with the exhaust pipe, between a catalyzing bag and a silencer, of the engine, and the control valve is arranged on a first connecting pipe. The volume of the air inlet pipe is large when the engine operates at a low speed and small when the engine operates at a high speed, and in other words, the volume of the air inlet pipe can be adjusted automatically. The system is reasonable in design, simple in structure and optimal in design.
Description
Technical field
The invention belongs to technical field of internal combustion engines, specifically, is a kind of naturally aspirated engine gas handling system that can realize the self-control of naturally aspirated engine suction tude volume.
Background technique
Present motor can be divided into naturally aspirated and supercharging type, and wherein supercharging type can be divided into again engine driven supercharging, turbosupercharging and up-to-date complex supercharge.Naturally aspirated does not have pressurized machine, and refer to that air arrives cylinder through air-strainer, closure, intake manifold merely, gasoline is injected directly in intake manifold by oil nozzle.For four cylinder engine, a piston makes a merit four strokes: descending (intake valve is opened, and there is pressure difference, and the mixed gas of air and fuel oil enters cylinder under the effect of pressure difference), up (IC Intake Valve Closes, compressed mixed gas, piston stroking upward is lighted a fire to during peak), it is descending again that (mixture combustion expands, promote piston externally to do work, outputting power), again up (exhaust valve is opened, exhaust).Naturally aspirated just refers in first stroke above, mixed gas carries out air-breathing by the pressure difference of self-assembling formation, and supercharging type just refers to first gas compression, improves pressure and the density of gas, when valve is opened time, the high pressure of depended on pressure difference and gas self is to increase air inflow, improves power.For naturally aspirated engine, variable intake manifold technology is comparatively general.Variable intake manifold, by changing the length of suction tude and sectional area, improves combustion efficiency, make motor when the slow-speed of revolution more steadily, moment of torsion is more sufficient, more smooth and easy during high rotating speed, power is more powerful.In ideal conditions, when speed operation, intake manifold volume is the bigger the better, and when high-speed working condition, intake manifold volume is the smaller the better, and like this at every speed, the charging efficiency of motor is all higher, and performance is all better.
Through existing literature search, find that number of patent application is 20142022823.6, name is called the patented technology of small displacement engine variable intake manifold, provides a kind of technology of exhaust pipe volume two-stage variable, but it can not suction tude volume reality continuous variable.
Summary of the invention
The present invention is directed to above-mentioned deficiency, a kind of naturally aspirated engine gas handling system is provided, the continuous variable of suction tude volume can be realized.
The present invention is achieved through the following technical solutions, the present invention includes engine air inlet tube, air filter, closure, motor, engine exhaust pipe, catalysis bag, baffler, first connecting tube, regulate chamber, shifting board, spring, second connecting tube, control valve, the air outlet of engine air inlet tube is connected with the intake duct of motor, and the air outlet of engine exhaust pipe is connected with the air outlet flue of motor, air filter, closure is arranged on engine air inlet tube successively, catalysis bag, baffler is arranged on engine exhaust pipe successively, adjustment chamber is rectangular structure, the cross section of shifting board is rectangular, shifting board is arranged in regulate in chamber and seal with the internal face in adjustment chamber and contacts, one end of first connecting tube is communicated with closure rear engine suction tude, the other end of the first connecting tube is communicated with regulating the right wall in chamber, shifting board is connected with regulating the right wall in chamber by spring, one end of second connecting tube is connected with regulating the left wall in chamber, the other end of the second connecting tube and catalysis bag, engine exhaust pipe between baffler is connected, and control valve is arranged on the first connecting tube.
The invention has the beneficial effects as follows: the present invention is reasonable in design, structure is simple, and suction tude volume can continuous variable, and motor is all better at every speed performance of operating condition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of A-A section in Fig. 1;
Label in accompanying drawing is respectively: 1, machine suction tude, and 2, air filter, 3, closure, 4, motor, 5, engine exhaust pipe, 6, catalysis bag, 7, baffler, the 8, first connecting tube, 9, regulate chamber, 10, shifting board, 11, spring, the 12, second connecting tube, 13, control valve.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
Embodiments of the invention as shown in Figure 1 to Figure 2, the present invention includes engine air inlet tube 1, air filter 2, closure 3, motor 4, engine exhaust pipe 5, catalysis bag 6, baffler 7, first connecting tube 8, regulate chamber 9, shifting board 10, spring 11, second connecting tube 12, control valve 13, the air outlet of engine air inlet tube 1 is connected with the intake duct of motor 4, and the air outlet of engine exhaust pipe 5 is connected with the air outlet flue of motor 4, air filter 2, closure 3 is arranged on engine air inlet tube 1 successively, catalysis bag 6, baffler 7 is arranged on engine exhaust pipe 5 successively, chamber 9 is regulated to be rectangular structure, the cross section of shifting board 10 is rectangular, shifting board 10 is arranged in regulate in chamber 9 and seal with the internal face in adjustment chamber 9 and contacts, one end of first connecting tube 8 is communicated with closure 3 rear engine suction tude 1, the other end of the first connecting tube 8 is communicated with regulating the right wall in chamber 9, shifting board 10 is connected with regulating the right wall in chamber 9 by spring 11, one end of second connecting tube 12 is connected with regulating the left wall in chamber 9, the other end of the second connecting tube 12 and catalysis bag 6, engine exhaust pipe 5 between baffler 7 is connected, and control valve 13 is arranged on the first connecting tube 8.
In implementation process of the present invention, shifting board 10 can move left and right in adjustment chamber 9.When motor runs at high-speed working condition, the pressure on the left of shifting board 10 is higher, and shifting board 10 moves right and Compress Spring 11, and the suction tude volume after closure 3 is less; When motor runs at speed operation, the pressure on the left of shifting board 10 is lower, is moved to the left at the elastic reaction lower shifting board 10 of spring 11, and the suction tude volume after closure 3 is larger.Therefore, the present invention can realize the continuous variable of suction tude volume.When the charging efficiency of motor does not need adjustment, or in certain operating mode in order to avoid air admittance regulation system and engine system resonate, then control valve 13 can be closed.
Claims (1)
1. a naturally aspirated engine gas handling system, comprise engine air inlet tube (1), air filter (2), closure (3), motor (4), engine exhaust pipe (5), catalysis bag (6), baffler (7), the air outlet of engine air inlet tube (1) is connected with the intake duct of motor (4), the air outlet of engine exhaust pipe (5) is connected with the air outlet flue of motor (4), air filter (2), closure (3) is arranged on engine air inlet tube (1) successively, catalysis bag (6), baffler (7) is arranged on engine exhaust pipe (5) successively, it is characterized in that, also comprise the first connecting tube (8), regulate chamber (9), shifting board (10), spring (11), second connecting tube (12), control valve (13), chamber (9) is regulated to be rectangular structure, the cross section of shifting board (10) is rectangular, shifting board (10) is arranged in regulate in chamber (9) and seal with the internal face of adjustment chamber (9) and contacts, one end of first connecting tube (8) is communicated with closure (3) rear engine suction tude (1), the other end of the first connecting tube (8) is communicated with regulating the right wall in chamber (9), shifting board (10) is connected with regulating the right wall in chamber (9) by spring (11), one end of second connecting tube (12) is connected with regulating the left wall in chamber (9), the other end of the second connecting tube (12) and catalysis bag (6), engine exhaust pipe (5) between baffler (7) is connected, control valve (13) is arranged on the first connecting tube (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715050.8A CN104595071A (en) | 2014-11-30 | 2014-11-30 | Air inlet system for naturally aspirated engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715050.8A CN104595071A (en) | 2014-11-30 | 2014-11-30 | Air inlet system for naturally aspirated engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104595071A true CN104595071A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410715050.8A Pending CN104595071A (en) | 2014-11-30 | 2014-11-30 | Air inlet system for naturally aspirated engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN104595071A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927429A (en) * | 2016-06-03 | 2016-09-07 | 辽宁工业大学 | Heat insulating device for engine compartment and passenger compartment of car |
| CN106089516A (en) * | 2016-05-31 | 2016-11-09 | 上海交通大学 | Motor head pipeline controlling organization |
-
2014
- 2014-11-30 CN CN201410715050.8A patent/CN104595071A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089516A (en) * | 2016-05-31 | 2016-11-09 | 上海交通大学 | Motor head pipeline controlling organization |
| CN105927429A (en) * | 2016-06-03 | 2016-09-07 | 辽宁工业大学 | Heat insulating device for engine compartment and passenger compartment of car |
| CN105927429B (en) * | 2016-06-03 | 2018-03-27 | 辽宁工业大学 | A kind of automobile engine nacelle and passenger compartment heat-proof device and heat-insulating method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |