CN106032769A - Diesel engine double air inlet device and diesel engine and vehicle using same - Google Patents
Diesel engine double air inlet device and diesel engine and vehicle using same Download PDFInfo
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- CN106032769A CN106032769A CN201510111635.3A CN201510111635A CN106032769A CN 106032769 A CN106032769 A CN 106032769A CN 201510111635 A CN201510111635 A CN 201510111635A CN 106032769 A CN106032769 A CN 106032769A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention relates to a diesel engine double air inlet device and a diesel engine and a vehicle using the device. The device comprises a centrifugal fan arranged in a housing. The centrifugal fan is driven by an existing driving device on one side. The side wall of the hosing is provided with an air inlet. The top end of the housing is provided with an air filter casing. The rear side of the air filter casing is connected with an air inlet pipe. A separating plate arranged in the air filter casing divides an air inlet inner cavity into a left cavity and a right cavity. The lower end of the left cavity is provided with an air inlet communicated with the external. The lower end of the right cavity is provided with a venthole communicated with a high-pressure cavity in the housing. The left cavity and the right are respectively communicated with the air inlet pipe on the rear side. When the diesel engine operates in high load, while not increasing generation of nitric oxide, concentration of burnable carbon monoxide, hydrocarbon, and particles is reduced. When the diesel engine operates in low load, an excess air coefficient of the diesel engine in low load is reduced, and content of nitric oxide generated in a burning process is reduced.
Description
Technical field
The present invention relates to a kind of diesel engine double air intake installation, method of work and use the diesel engine of this device, automobile, under middle-low load, discharging the oxynitride content in waste gas for reducing diesel engine and automobile.
Background technology
nullDiesel engine is due to the high feature of the diesel oil phosphorus content that used，Air capacity required in combustion is more compared with gasoline engine，It is commonly used mechanical supercharger on the most existing diesel engine、The air inlet boosting devices such as turbocharger，Excess air coefficient is improve after using pressurizer，Diesel oil is more abundant at gas in-cylinder combustion，Yet with air after using pressurizer relative to diesel oil excess and the feature of diesel engine high-pressure contracting ratio，Compare gasoline engine in combustion and produce more oxynitride，Particularly when in diesel engine, low speed or middle-low load run，Owing to spraying into the diesel oil amount in cylinder, to compare high load capacity duty less，Under supercharger effect, enter the air in cylinder compare the excess higher (i.e. excess air coefficient is far above high load capacity duty) of diesel oil，After burning, in its waste gas, the content of oxynitride is the highest，Thus it is necessary to technological means to reduce the content of diesel engine oxynitride when middle-low load works in waste gas，Diesel engine is made to meet higher exhaust emissions environmental protection standard.
Summary of the invention
The technical problem to be solved is to provide the double air intake installation of a kind of diesel engine, reduces diesel engine content of oxynitride in waste gas when middle-low load runs.
In order to solve above-mentioned technical problem, the present invention provides a kind of diesel engine double air intake installation, comprising: the centrifugal fan being provided with in housing, centrifugal fan is driven by the driving means of side, the sidewall of housing is provided with the air inlet matched with centrifugal fan, the top of housing is provided with air filter cover, the rear side of air filter cover connects air inlet pipe, the inner chamber of air filter cover is divided into left chamber and right chamber by the dividing plate being provided with in air filter cover, left chamber communicates with the external world, right chamber communicates with the high pressure chest in housing, and left and right chamber is connected with the air inlet pipe of rear side respectively.
It is provided with air filtering core in air filter cover, air filtering core is suitable to the inner chamber isolation of the inner chamber of air filter cover with air inlet pipe, bulkhead seal is matched with on the leading flank of air filtering core, the air entering left chamber is suitable to by entering air inlet pipe after being positioned at the part on the left of dividing plate on air filtering core, and the air entering right chamber is suitable to by entering air inlet pipe after being positioned at the part on the right side of dividing plate on air filtering core；The lower end in left chamber is provided with the air inlet communicated with the external world, and the lower end in right chamber is provided with the passage communicated with the high pressure chest in housing.
The downside of air inlet pipe is provided with air chamber, and one end of air chamber connects with right chamber, and the other end of air chamber connects with the high pressure chest in housing below.
The rear side of the high pressure chest in housing is provided with pressure-air guide cylinder lid and the cooling air channel of cylinder block.
Described driving means is the motor of scalable rotating speed, crankshaft of diesel engine or the exhaust gas turbine being located in exhaustor.
The present invention also provides for the method for work of the double air intake installation of a kind of above-mentioned diesel engine: when diesel engine works, motor works and drives centrifugal fan to rotate, air enters in housing from air inlet, and the pressure-air after compression is entered right chamber by the high pressure chest in housing, subsequently in air inlet pipe；Meanwhile, extraneous atmospheric air enters left chamber through air inlet, mix with the pressure-air entered in air inlet pipe subsequently in air inlet pipe, eventually enters into that cylinder of diesel engine is interior and diesel oil mixed combustion.
After pressure-air enters right chamber, by being positioned at the part on the right side of dividing plate on air filtering core and entering after filtering in air inlet pipe, after atmospheric air enters left chamber, by being positioned at the part on the left of dividing plate on air filtering core and entering after filtering in air inlet pipe.
A part of pressure-air after compression is entered air chamber by the high pressure chest of housing, then enters right intracavity from air chamber；Meanwhile, another part pressure-air flows to cylinder head and cylinder block after high pressure chest enters cooling air channel, cools down both.
The present invention also provides for a kind of diesel engine, which employs the double air intake installation of above-mentioned diesel engine.
The present invention also provides for a kind of automobile, which employs above-mentioned diesel engine.
Relative to prior art, what the present invention had has the technical effect that
(1) when diesel engine works at middle-low load, atmospheric air enters air inlet pipe through left chamber, thus dilution enters the pressure-air in air inlet pipe via right chamber, and air pressure in air inlet pipe is reduced, enter the air total amount in air inlet pipe in making the unit interval to reduce, reduce the diesel engine excess air coefficient when underload, reduce the content of the nitrogen oxides produced in combustion process；Additionally, when diesel engine high load capacity works, diesel engine required air quantity increases, atmospheric air is in left chamber enters air inlet pipe, and pressure-air, in right chamber enters air inlet pipe, compares the diesel engine not using air inlet boosting device, add the air inlet total amount in the unit interval, improve excess air coefficient within the required range, while not increasing formation of nitrogen oxides, reduce carbon monoxide, hydrocarbons and the concentration of granule in the tail gas after burning.
(2) entering in air filter cover air after air filtering core filters, eliminate the particulate matters such as dust in air, make the air of entrance be purified, additionally air filtering core can hinder the pressure-air in air inlet pipe to reflux to the left chamber of normal pressure.
(3) pressure-air in the high pressure chest of case top can be converged by the air chamber on the downside of air inlet pipe, and due to the volume of air chamber, to compare housing less, makes the air pressure converging at the air in air chamber raise further, promotes the pressurized effect of centrifugal fan.
(4) the cooled air channel of pressure-air flows to cylinder head and cylinder block, can strengthen the cooling effect of diesel engine, the air capacity during beneficially reduction flows into air inlet pipe simultaneously, thus the content of the oxynitride in waste gas when beneficially reducing diesel engine underload.
(5) relative to existing mechanical supercharger or exhaust-driven turbo-charger exhaust-gas turbo charger, the motor of scalable rotating speed can regulate the rotating speed of centrifugal fan in real time according to the load of diesel engine, thus regulate the air pressure of pressure-air and the pressure-air amount pumping in air inlet pipe in the unit interval, diesel engine excess air coefficient and air inlet pipe internal gas pressure under different load are maintained in required scope, prevent from further raising owing to excess air coefficient and air inlet pipe internal gas pressure exceed oxynitride content in the waste gas that required scope causes.
Accompanying drawing explanation
In order to understand the innovative principle of the explanation present invention and compared to the technical advantage of existing product, below by way of accompanying drawing by the possible embodiment of the limiting examples explanation of applying described principle.In the drawings:
Fig. 1 is the front view of the double air intake installation of diesel engine of the present invention；
Fig. 2 is that the A-A of the double air intake installation of diesel engine of the present invention is to sectional view；
Fig. 3 is the cutaway view Amplified image of the air filter cover of the present invention.
Detailed description of the invention
Embodiment 1
As Figure 1-3, the double air intake installation of the diesel engine of the present invention includes: housing 1, air filter cover 2, air inlet 3, centrifugal fan 4, motor 5, cooling air channel 6, left chamber 7, air chamber 8, right chamber 9, air inlet 10, air filtering core 11, dividing plate 12, nut 13, air inlet pipe 14, passage 15, screw rod 16, pressing plate 17
nullThe rear wall of the housing 1 of hollow is provided with motor 5，The rotor of motor 5 front portion connects centrifugal fan 4，Centrifugal fan 4 is located in housing 1，Just offer air inlet 3 on housing 1 front side wall of centrifugal fan 4，The top inner chamber of housing 1 is centrifugal fan 4 high pressure chest that pressure-air is assembled and outwards pumped when rotating，Housing 1 on rear side of high pressure chest is provided with the cooling air channel 6 directing the air to cylinder head and cylinder block，The top of housing 1 is provided with air filter cover 2，The rear portion of air filter cover 2 is provided with air inlet pipe 14，The air filtering core 11 of annular it is provided with in air filter cover 2，Air filtering core 11 is by nut 13、Screw rod 16 and pressing plate 17 are fixed in the air filter cover 2 on front side of air inlet pipe 14，The inner chamber of air filter cover 2 is separated with air inlet pipe 14 by air filtering core 11 with pressing plate 17，Air enters air inlet pipe 14 in air filter cover 2 must flow through air filtering core 11，Dividing plate 12 in air filter cover 2 seals and is pressed on the leading flank of air filtering core 11 and the inner chamber of air filter cover is divided into left chamber 7 and right chamber 9，The air filter cover 2 of lower end, left chamber 7 is provided with the air inlet 10 communicated with the external world，Left chamber 7 is common pressure chamber，The rear wall of the air filter cover 2 of bottom, right chamber 9 is provided with passage 15，This passage 15 is connected with the air chamber 8 being provided with on the downside of air inlet pipe 14，Air chamber 8 connects with the top inner chamber (i.e. high pressure chest) of described housing 1，Left、The air in right chamber is during all coming together in the air inlet pipe 14 on rear side of air filter cover 2 after air filtering core 11.
The work process of the double air intake installation of the diesel engine of the present invention includes:
A, when diesel engine works, motor 5 works and drives centrifugal fan 4 to rotate, air enters in housing 1 from air inlet 3, air compression rear portion pressure-air is by the top inner chamber of housing 1, flow to cylinder head and it is cooled down by cylinder block through cooling air channel 6, another part air enters right chamber 9 through top inner chamber and the air chamber 8 of housing 1, and the air of high pressure is by being positioned at the part on the right side of dividing plate and entering after filtering in air inlet pipe 14 on air filtering core 11；
B, meanwhile, extraneous atmospheric air is in air inlet 10 enters left chamber 7, atmospheric air mixes with the pressure-air entering air inlet pipe 14 in step a by being positioned at the part on the left of dividing plate entering after filtering in air inlet pipe 14 on air filtering core 11, finally enters that cylinder is interior and diesel oil mixed combustion.
Use the diesel engine of above-mentioned pair of air intake installation, when diesel engine works at middle-low load, atmospheric air enters air inlet pipe 14 through left chamber 7, thus dilution enters the pressure-air in air inlet pipe 14 via right chamber 9, and the air pressure in air inlet pipe 14 is reduced, make the unit interval enter the air total amount in air inlet pipe to reduce, compare the intake method pumping into air only with supercharger, reduce the air inflow in the unit interval, diesel engine excess air coefficient when middle-low load is reduced, thus reduces the amount of the oxynitride produced in combustion process；Additionally, compare the intake method pumping into air only with supercharger, air pressure in air inlet pipe 14 is lower, and then reduce the air pressure in cylinder, so that the air pressure in cylinder reduces during burning, owing to the generation amount of oxynitride is directly proportional to the air pressure in cylinder during burning, therefore the reduction of manifold air pressure causes the decline of oxynitride discharge amount.
When diesel engine works at high load capacity, diesel engine required air quantity increases, atmospheric air is while left chamber 7 enters air inlet pipe 14, centrifugal fan 4 is by after compressed for more air one-tenth pressure-air, enter in air inlet pipe 14 through right chamber 9, compare the diesel engine not using air inlet boosting device, add the air inlet total amount in the unit interval, improve excess air coefficient within the required range, while not increasing formation of nitrogen oxides, reduce carbon monoxide, hydrocarbons and the concentration of granule in the tail gas after burning.
The pressure-air of the atmospheric air of left intracavity and right intracavity is joined in air inlet pipe 14 respectively through after air filtering core 11, owing to atmospheric air exists air inlet inertia when flowing into air inlet pipe 14, it is possible to prevent to enter the pressure-air in air inlet pipe 14 and flows out back through air filtering core 11 and from left chamber 7, air inlet 10.
Further, since centrifugal fan 4 is driven by motor 5, when diesel engine works at middle-low load, can reduce motor 5 rotating speed, reduce centrifugal fan 4 pump gas efficiency, thus reduce its within the unit interval in air inlet pipe 14 amount of pumped air；When diesel engine works at high load capacity, improve motor 5 rotating speed, improve centrifugal fan 4 pump gas efficiency, thus increase its within the unit interval in air inlet pipe 14 amount of pumped air.
Embodiment 2
The present embodiment is relative in place of the difference of embodiment 1: centrifugal fan 4 is driven by the bent axle of the diesel engine installing above-mentioned pair of air intake installation, and bent axle drives centrifugal fan 4 to rotate by pulley drive or chaindriven mode.
Embodiment 3
The present embodiment is in place of the difference relative to embodiment 1: be provided with exhaust gas turbine in the exhaustor of the diesel engine being provided with double air intake installation, this exhaust gas turbine is in transmission connection with described centrifugal fan 4, when diesel engine works, exhaust gas turbine rotates under pressure at expulsion effect, and this exhaust gas turbine drives centrifugal fan 4 to rotate.
Obviously, above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And these spirit belonging to the present invention are extended out obvious change or variation still in protection scope of the present invention among.
Claims (10)
1. the double air intake installation of diesel engine, it is characterized in that including: the centrifugal fan (4) being provided with in housing (1), centrifugal fan (4) is driven by the driving means of side, the sidewall of housing (1) is provided with the air inlet (3) matched with centrifugal fan (4), the top of housing (1) is provided with air filter cover (2), the rear side of air filter cover (2) connects air inlet pipe (14), the inner chamber of air filter cover (2) is divided into left chamber (7) and right chamber (9) by the dividing plate (12) being provided with in air filter cover (2), left chamber (7) communicates with the external world, right chamber (9) communicates with the high pressure chest in housing (1), left, right chamber is connected with the air inlet pipe (14) of rear side respectively.
The double air intake installation of diesel engine the most according to claim 1, it is characterized in that: in air filter cover (2), be provided with air filtering core (11), air filtering core (11) is suitable to the inner chamber isolation of the inner chamber of air filter cover (2) with air inlet pipe (14), dividing plate (12) seals and is matched with on the leading flank of air filtering core (11), the air entering left chamber (7) is suitable to by entering air inlet pipe (14) after being positioned at the part on the left of dividing plate on air filtering core (11), the air entering right chamber (7) is suitable to by entering air inlet pipe (14) after being positioned at the part on the right side of dividing plate on air filtering core (11)；
The lower end in left chamber (7) is provided with the air inlet (10) communicated with the external world, and the lower end of right chamber (9) is provided with the passage (15) communicated with the high pressure chest in housing (1).
The double air intake installation of diesel engine the most according to claim 2, it is characterized in that: the downside of air inlet pipe (14) is provided with air chamber (8), one end of air chamber (8) connects with right chamber (9), and the other end of air chamber (8) connects with the high pressure chest in housing (1) below.
The double air intake installation of diesel engine the most according to claim 3, it is characterised in that: the rear side of the high pressure chest in housing (1) is provided with the cooling air channel (6) of pressure-air guide cylinder lid and cylinder block.
The double air intake installation of diesel engine the most according to claim 4, it is characterised in that: described driving means is the motor (5) of scalable rotating speed, crankshaft of diesel engine or the exhaust gas turbine being located in exhaustor.
6. according to the method for work of the double air intake installation of the diesel engine one of claim 1-5 Suo Shu, it is characterised in that:
When diesel engine works, motor (5) works and drives centrifugal fan (4) to rotate, air enters in housing (1) from air inlet (3), and the pressure-air after compression is entered right chamber (9) by the high pressure chest in housing (1), subsequently in air inlet pipe (14)；Meanwhile, extraneous atmospheric air enters left chamber (7) through air inlet (10), mix with the pressure-air entered in air inlet pipe (14) subsequently in air inlet pipe (14), eventually enters into that cylinder of diesel engine is interior and diesel oil mixed combustion.
The method of work of the double air intake installation of diesel engine the most according to claim 6, it is characterized in that: pressure-air enter right chamber (9) afterwards, by being positioned at the part on the right side of dividing plate on air filtering core (11) and entering in air inlet pipe (14) after filtering, atmospheric air enter left chamber (7) afterwards, by being positioned at the part on the left of dividing plate on air filtering core (11) and entering after filtering in air inlet pipe (14).
The method of work of the double air intake installation of diesel engine the most according to claim 7, it is characterised in that: a part of pressure-air after compression is entered air chamber (8) by the high pressure chest of housing (1), then enters in right chamber (9) from air chamber (8)；Meanwhile, another part pressure-air flows to cylinder head and cylinder block after high pressure chest enters cooling air channel (6), cools down both.
9. a diesel engine, it is characterised in that: this diesel engine have employed the double air intake installation of the described diesel engine of one of claim 1-5.
10. an automobile, it is characterised in that: this automobile have employed the diesel engine described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111635.3A CN106032769A (en) | 2015-03-13 | 2015-03-13 | Diesel engine double air inlet device and diesel engine and vehicle using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111635.3A CN106032769A (en) | 2015-03-13 | 2015-03-13 | Diesel engine double air inlet device and diesel engine and vehicle using same |
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| CN106032769A true CN106032769A (en) | 2016-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510111635.3A Pending CN106032769A (en) | 2015-03-13 | 2015-03-13 | Diesel engine double air inlet device and diesel engine and vehicle using same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061000A (en) * | 2017-06-06 | 2017-08-18 | 无锡华源凯马发动机有限公司 | Micro- supercharging device of Miniature direct connection formula gasoline engine generator |
| CN109372630A (en) * | 2018-12-17 | 2019-02-22 | 江苏常发农业装备股份有限公司 | The air-cooled single cylinder engine of plenum |
| CN113386867A (en) * | 2021-07-16 | 2021-09-14 | 赛格威科技有限公司 | All-terrain vehicle |
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| DE2442151A1 (en) * | 1974-09-03 | 1976-03-11 | Porsche Ag | Air cooled turbocharged I.C. engine - uses relief discharge of turbocharger for air cooling of engine |
| CN202628330U (en) * | 2012-04-06 | 2012-12-26 | 山推工程机械股份有限公司 | V-shaped engine channel with double air filter inlets |
| CN103912420A (en) * | 2014-04-15 | 2014-07-09 | 广东嘉纳仕科技实业有限公司 | Novel supercharging intake pipe of double-bushing structure |
| CN103953478A (en) * | 2014-04-15 | 2014-07-30 | 广东嘉纳仕科技实业有限公司 | Novel two-channel pressurized air charging pipe |
| CN204827650U (en) * | 2015-03-13 | 2015-12-02 | 常州科普动力机械有限公司 | Two air inlet unit of diesel engine and adoption device's diesel engine, car |
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2015
- 2015-03-13 CN CN201510111635.3A patent/CN106032769A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2442151A1 (en) * | 1974-09-03 | 1976-03-11 | Porsche Ag | Air cooled turbocharged I.C. engine - uses relief discharge of turbocharger for air cooling of engine |
| CN202628330U (en) * | 2012-04-06 | 2012-12-26 | 山推工程机械股份有限公司 | V-shaped engine channel with double air filter inlets |
| CN103912420A (en) * | 2014-04-15 | 2014-07-09 | 广东嘉纳仕科技实业有限公司 | Novel supercharging intake pipe of double-bushing structure |
| CN103953478A (en) * | 2014-04-15 | 2014-07-30 | 广东嘉纳仕科技实业有限公司 | Novel two-channel pressurized air charging pipe |
| CN204827650U (en) * | 2015-03-13 | 2015-12-02 | 常州科普动力机械有限公司 | Two air inlet unit of diesel engine and adoption device's diesel engine, car |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061000A (en) * | 2017-06-06 | 2017-08-18 | 无锡华源凯马发动机有限公司 | Micro- supercharging device of Miniature direct connection formula gasoline engine generator |
| CN109372630A (en) * | 2018-12-17 | 2019-02-22 | 江苏常发农业装备股份有限公司 | The air-cooled single cylinder engine of plenum |
| CN113386867A (en) * | 2021-07-16 | 2021-09-14 | 赛格威科技有限公司 | All-terrain vehicle |
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Application publication date: 20161019 |