CN110494643A - A kind of air induction system for sulky vehicle - Google Patents
A kind of air induction system for sulky vehicle Download PDFInfo
- Publication number
- CN110494643A CN110494643A CN201880024263.2A CN201880024263A CN110494643A CN 110494643 A CN110494643 A CN 110494643A CN 201880024263 A CN201880024263 A CN 201880024263A CN 110494643 A CN110494643 A CN 110494643A
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- Prior art keywords
- air inlet
- air
- port
- engine
- fuel injection
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- 230000006698 induction Effects 0.000 title description 10
- 239000000446 fuel Substances 0.000 claims abstract description 179
- 238000002347 injection Methods 0.000 claims abstract description 84
- 239000007924 injection Substances 0.000 claims abstract description 84
- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 238000007600 charging Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims description 36
- 238000005192 partition Methods 0.000 claims description 19
- 238000005452 bending Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims 2
- 239000012212 insulator Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 19
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 14
- 238000013461 design Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000004087 circulation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
- F02M35/108—Intake manifolds with primary and secondary intake passages
- F02M35/1085—Intake manifolds with primary and secondary intake passages the combustion chamber having multiple intake valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The cylinder head (204) of internal combustion engine (101) is included in two intake valves operated in swirl port (501) and tumble port (502), i.e. vortex air intake valve (308) and tumble flow intake valve.Charging is ejected into swirl port and tumble port respectively by fuel injection valve (301).Promote Mixed Zone (620) by the position of fuel injection valve, wherein injected fuel spray is ejected into Mixed Zone (620) towards swirl port and tumble port.The ratio of the cross-sectional width (E, F) of vertical distance (a) and at least one of two air inlet ports between injected fuel spray point (P) and the base portion (Y-Y) of port end is between 1.5 to 3.The present invention provides the charging entrances from swirl port and tumble port, to ensure enough charging distributions and avoid undesirable engine noise.
Description
Technical field
This theme relates generally to two-wheeled or three-wheel saddle-ride type vehicle.More specifically, this theme is related to one kind for two
The air inlet pipe of the induction system of wheeled vehicle.
Background technique
Gas handling system plays an important role in internal combustion (IC) engine, and influences driving performance, provide it is increased in
Number of passes and generate desired torque.Induction system includes pressurized fuel pump, fuel injection valve, ECU, throttle valve, air inlet pipe, sky
Air cleaner and the various sensors inputted to ECU offer.Fuel injection valve is directly inside I/C engine or in air inlet pipe
Portion introduces the fuel in the form of injected fuel spray, and the atomization which passes through small nozzle by fuel under high pressure is formed.
Gas handling system with fuel injection has many advantages, for example more cleans and completely burning, waste of fuel minimum, valve are clever
Sensitivity is higher, and prevents excessive fuel from entering I/C engine.Generally speaking, this improves I/C engine performance and has
Better cold start characteristics.The position of fuel injection valve and orientation are extremely important, because it is in improved burning, fuel injection valve
Accessibility and various inputs and the connectivity of fuel injection valve in terms of provide advantage.In general, in order to improve efficiency of combustion
And desired air-fuel mixture burns characteristic is obtained in I/C engine, I/C engine includes the gas with ingress port
Cylinder cap.In the sulky vehicle of the scooter-type vehicle such as with the head with two entrances port, the installation of fuel injection valve
It is a challenge with placement.However, due to there are two air inlet ports and fuel injection valve inject fuel into two into
Fuel injection valve is mounted in the setting of air induction system and is challenging by the waste of fuel during gas port.Have
The sulky vehicle of cylinder head with two entrances port has the attracting feature of increased mileage and fuel efficiency, improved
I/C engine performance is extremely important.
Summary of the invention
The present invention is devised in view of the foregoing.
Internal combustion engine includes cylinder head.Cylinder head includes two intake valves, i.e., grasps in swirl port and tumble port
The vortex air intake valve and tumble flow intake valve of work.Atmosphere from throttle body and the fuel difference by fuel injection valve injection
Into swirl port and tumble port.The short-circuiting percentage for forming Mixed Zone is convenient for the position of fuel injection valve, and wherein fuel sprays
Mist jet is into Mixed Zone towards swirl port and tumble port.For the ease of installing fuel injection valve, air inlet pipe is provided with
Injector region, the opening which has mounting flange and fuel injection valve is allowed to enter.The mixed zone of air inlet pipe
The size in domain be appropriately designed so that the vertical distance at the tip of partition wall of the end from air inlet pipe into Mixed Zone with
The ratio of the cross-sectional width of at least one.Two air inlet ports are between 1.5 to 3.
It is an object of the present invention to provide the charging entrances from swirl port and tumble port, to ensure enough dresses
Material is distributed and avoids undesirable engine noise.
Summary of the invention provided above explains essential characteristic of the invention, and does not limit the scope of the invention.Pass through
It is described below with reference to what attached drawing carried out, property of the invention and further feature will become clearer.
Detailed description of the invention
Detailed description is described in reference to the drawings.Identical feature and portion are referred to using identical appended drawing reference through attached drawing
Part.
Fig. 1 shows the left side view of the sulky vehicle of the embodiment using this theme.
Fig. 2 shows according to the amplification of the internal combustion engine with air induction system of one embodiment of this theme and
Right side view.
Fig. 3 shows the cross-sectional view of internal combustion engine and air inlet pipe according to the embodiment of this theme.
Fig. 4 shows the exploded view of the cylinder head of the embodiment according to this theme, air inlet pipe and fuel injection system.
Fig. 5 shows the front view of the cylinder head of the embodiment according to this theme.
Fig. 6 a shows the isometric view of the air inlet pipe of the embodiment according to this theme.
Fig. 6 b shows another isometric view of the air inlet pipe of the embodiment according to this theme.
Fig. 6 c shows the front view of the air inlet pipe of the embodiment according to this theme.
Fig. 7 shows the cross-sectional view with the air inlet pipe of fuel injection system of the embodiment according to this theme.
Specific embodiment
The various features and embodiment of present subject matter by from be described below it is described further below in it can be seen that.
According to one embodiment, internal combustion engine (IC) described herein is with four circulate operations.This I/C engine, which is mounted on, to stride
In formula sulky vehicle.It is contemplated that idea of the invention can be applied to other classes fallen within the spirit and scope of the present invention
The vehicle of type.The detailed of the composition of the other parts except the essential part for constituting this theme is omitted in place appropriate
Explanation.
Supplying optimal air and fuel mixture is vital for the appropriate burning in I/C engine.If mixed
Close object it is inappropriate (lean mixture or dense mixture), then will lead to burning it is improper, to influence I/C engine performance and lead
Exhaust gas discharge is caused to increase.It keeps air appropriate and fuel mixture ratio is vital, and grasped in real time based on I/C engine
Make the data variation supply ratio and rate significantly improves I/C engine performance.Gas handling system substantially can be two types
Type, i.e. fuel injection system and carburetor circuit.Fuel injection system is based on the certain parameters determined by various multiple sensors
Electronically spray and control air fuel mixture.Throttle valve of the carburetor based on rider's application by sulky vehicle is mechanically
Control air fuel mixture.In order to make I/C engine have stable driving performance, increased mileage number, improved power and
Torque, gas handling system and fuel injection system play an important role.
In general, gas handling system includes air cleaner, inlet channel, throttle body, fuel injection valve and air inlet pipe.It is empty
Air cleaner draw air and is filtered from atmosphere, then supplies air to components downstream.Air cleaner channel
Air circulation of the guidance from air cleaner crosses throttle body, which includes the literary mound by its throttling air
In manage and butterfly valve, to control the ingress rate of air based on the throttle valve control of rider.Throttling air passes through air inlet pipe
It is directed into multiple air inlet ports of I/C engine.Multiple air inlet ports form a part of the cylinder head of I/C engine, will
Air fuel mixture is directed to combustion chamber.The outlet of multiple air inlet ports is controlled by the intake valve of identical quantity, and intake valve is matched
It is set to and is operably connected to open and close to match I/C engine four circulations.Fuel injection valve is arranged so that throttling
It is injected fuel into the throttling air in air inlet pipe later.Fuel injection valve is directly in I/C engine or in air inlet pipe
Fuel is introduced in the form of injected fuel spray, the injected fuel spray form is formed by the small nozzle atomization fuel under high pressure.Combustion
Material injection valve may be mounted in throttle body or air inlet pipe.In the presence of determining I/C engine operating status and condition of riding
Various sensors, and electronic control unit (ECU) is based on these inputs and adjusts air fuel mixture.There are petrolift,
It is configured to pressurized fuel being supplied to fuel injector, allows to easily spray fuel.The pressure facilitates atomization and is firing
Expect that the fuel at injection valve tip, the fuel are sprayed as injected fuel spray.Shape is run by the I/C engine of different sensors measurement
State and the condition of riding are stored in the memory block of the ECU referred to as mapped.ECU is programmed with certain preset modes, and
Fuel delivery when value reaches certain amount, and how much fuel will be conveyed based on this tittle determination by ECU.Various sensors
It is throttle valve position sensor, idle running sensor, crankshaft-rotation sensor etc..
In general, in order to improve fuel efficiency and obtain effective combustion characteristics, air fuel mixture in the combustion chamber
The movement of entrance in the combustion chamber plays an important role, and combustion characteristics depend on air fuel mixture entrance type and
It is affected.The type of air fuel mixture entrance and direction depend on the profile and geometry of ingress port.It is expected that
The eddy motion of air fuel mixture is obtained in lower engine speed range, and is obtained at higher engine speeds
Obtain the tumble motion of air fuel mixture.Further it is expected that there is combined vortex to transport for the entrance movement of air fuel mixture
Dynamic and tumble motion, thus I/C engine can be in all engine speed ranges with the group of eddy motion and tumble motion
Close advantage.Single port can not achieve eddy motion and the tumble motion of air fuel mixture.Therefore, in the prior art
Know two air inlet port cylinder head for I/C engine, the different air inlet port of two of them is by auxiliary air fuel mixture
Eddy motion and tumble motion are carried out in each air inlet port.Port geometry (direction and curvature) determines air fuel
Mixture enters the direction of combustion chamber.Swirl port opening is located at the center of cylinder head bore and tumble port opening deviates cylinder
The center in hole, and a port is located on another.
There are many designed for air fuel mixture is supplied to tool, there are two air inlet port (swirl port and tumble flow ends
Mouthful) I/C engine gas handling system.Design as a kind of is related to being connected to two air inlet ports using by throttle body
Separated air inlet pipe.Air inlet pipe has partition wall, which is divided into two individual paths for the path of moving air, this
Can be steady to two air inlet port supplies and do not have the air and fuel stream of turbulent flow in two paths.In this respect, it also uses
Controlled burning rate concept.Controlled burning rate is a kind of deactivated concept in port, and wherein the Turbulent Kinetic of air fuel mixture is being fired
The orthochronous and position burnt in room generate, and quick and stable burning occurs, this makes to be much higher than 1.5 Lambda
Operation of the excess air than running engine.This provides low exhaust gas emission and good fuel economy.Two it is different into
Gas port, a swirl port and a tumble port are for obtaining controlled burning rate.Extraly, throttle body is used for port
It deactivates.Under fractional load and lower engine speed, tumble port disconnects and only activates swirl port.Further, since
The optimum position of spark plug can obtain performance and the indistinguishable lean burn of fuel economy.
Therefore, during part load operation, the butterfly valve in throttle body is designed to only air fuel be allowed to mix
Object is by a path in air inlet pipe, air fuel mixture is only supplied to swirl port.During full valve operation, permit
Perhaps air fuel mixture enters two paths.In this way it is possible to obtain effective within the scope of all throttle valve positions
Operation.However, realize fuel injection for obtain optimum air speed, to two paths of air inlet pipe provide injected fuel spray and
It is vital for additionally ensuring that fuel is sprayed as close to air inlet port, and the fuel injection in each air inlet port
Path should be such that wall wetting minimizes.Fuel injection system for this cylinder head is challenging, difficult to install, is close to
Property is poor and is difficult to accommodate it in existing vehicle layout.
In addition, in cylinder head of the tool there are three port (two air inlet ports and a gas outlet), usually using center
Spark plug.But under the conditions of partial throttling, air fuel mixture only from a port (swirl port) enter and therefore
Only burn in side, and there are after burnings in tumble port side.This can generate undesirable engine noise.Therefore,
In order to ensure enough chargings distribution, it would be desirable to allow some air fuel mixtures pass through tumble port.
Therefore, in order to implement fuel injection system in this sulky vehicle, various models are proposed in the art
Fuel injection valve installation part.In general, a solution is to provide two fuel injection valves to guide air fuel mixture
In the air inlet port different to two.It is this design have using additional fuel injection valve, increase mechanism complexity and
Using different ECU mappings come the shortcomings that controlling two fuel injection valves and increase the capacity of petrolift.Due to effectively to
Two air inlet ports provide the inherent defect of injected fuel spray, so it is tired for replacing two fuel injection valves with single fuel injection valve
Difficult.Vehicle layout limits so that in such as front caused by being limited due to the space in various Frame Designs and vehicle layout
Fixed and positioned fuel injection valve and throttle body are a challenging tasks in sulky vehicle described in paragraph.
Therefore, in order to avoid problem associated with the air inlet port of above-mentioned design, the invention discloses by removing
By the dividing wall of their separated sub-fractions and equipped with short-circuited region before valve in Fuel-air inlet channel itself
Induction pathway.In addition, Inlet Manifold Design is positioned to the fuel injection valve of injection fuel at receiving.This allows fuel proportionally straight
It connects and is ejected into each of two air inlet ports.In the inlet of each port, charging is effectively mixed and is generated uniformly
Charging distribution.Extraly, even if air fuel mixture also enters swirl port and tumble flow end during partial throttling operation
Mouthful.Therefore, it has dual function, i.e. starting burning as early as possible, and facilitates to reduce noise when using fuel injection.It is retouched
The invention stated is related to that fuel injection system is made to adapt to air inlet pipe in split type Inlet Manifold Design.Secondly, what other were individually flowed
Short circuit helps to supply enough fuel to tumble port, this is usually inoperable during partial throttling state.This is really
Almost uniform charging in cylinder is protected.In addition, which ensure that the burden flow near the spark plug tip end of center is sufficient.This is helped
In earlier, faster and more complete burning, to reduce the chance of pinking, and by allowing further igniting progress to help
It is thinner in making to burn.
Change by above-mentioned design, can advantage is obtained that, such as utilizes the improved performance of fuel injection system, In
Fuel wall wetting while spraying fuel in minimum air inlet port, improved I/C engine performance, better fuel efficiency
It is discharged with less exhaust gas.Extraly, the smallest layout is needed to change to accommodate fuel injection valve and throttle body.In addition,
The fuel pressure loss of fuel injection valve is minimum.In addition, fuel injection valve and throttle body are easier to safeguard and approach, and
It is mobile to allow easy tool, and can be close to connecting elements (such as fastener).In addition it is possible to use two kinds of combustion
Expect injection valve.In the present embodiment, single injected fuel spray is sprayed from fuel injection valve, the fuel injection valve is by the wall of cylinder head point
It opens.In another embodiment, double ejection-type fuel injection valves can be used, in different directions with two different angles
Spray fuel.
It will be described in further detail on the basis of the attached diagram the embodiment of this theme and all accompanyings and other excellent in the following paragraphs
Point.
Fig. 1 shows sulky vehicle according to an embodiment of the invention.The vehicle includes frame assembly, the frame set
Part is usually carrier frame, provides substantially open middle section and is got on the bus with allowing rider to stride.In general, frame assembly packet
Include head tube (102), supervisor (107) and a pair of of side pipe 109 (only showing one).Sulky vehicle is on longitudinal axis from front (F)
Extend to rear portion (R).Head tube (102) is arranged towards front (F).Supervisor (107) extends downwardly and rearwardly from head tube (102), shape
It strides partially (117) at flat level.The other end for being responsible for (107) is connected by bracket (not shown) and a pair of of side pipe (109)
It connects.Head tube (102) is configured to rotatably support steering tube (104) and is connected further to the front suspension system at lower end
(121).Grip support (not shown) is connected to the upper end of steering tube (102) and support handle component (106).Two are stretched
Contracting formula front suspension system 121 (only showing one) is attached to the bracket (not shown) in steering tube (104) lower part, front-wheel (119)
It is supported on the bracket.The top of front-wheel (119) is covered by the front mudguard (103) for being mounted on steering shaft (104) lower part.It is described
A pair of of side pipe (109) extends from the other end of supervisor, and is set in parallel in the two sides of vehicle-width direction.Each side
Pipe (109) includes to part of the framework (109a), this tilts and extend to part of the framework (109a) from supervisor (109), and
The rear portion of vehicle is gradually extended rearward in horizontal direction after certain length.Multiple transverse tube (not shown) are to select
Fixed interval is fixed between the pair of side pipe (109), to support vehicle accessory, including tool box (not shown), seat group
Part (108) and fuel tank assembly (not shown).
Seat (108) is supported on a pair of of side pipe (109), and rider can be sitting on the pair of side pipe (109).In general,
Tool box (not shown) is supported between the left end of a pair of of side pipe (109) and the front of right end, to be arranged under seat (108)
Side.Fuel tank assembly (not shown) is arranged between the rear portion of a pair of of side pipe (109).Front brake (not shown) and rear brake
(114) it is arranged on front-wheel (119) and rear-wheel (113).Rear-wheel (113) is by internal combustion (IC) engine (101) towards frame
Backside support, internal combustion (IC) engine (101) is horizontally swingably couple to two-wheeled by rear-suspension system (not shown)
The rear portion of the frame assembly of vehicle.When I/C engine is directly coupled to rear-wheel (113) by stepless transmission (CVT) system,
Driving is directly delivered to rear-wheel (113) by I/C engine.I/C engine includes CVT system, and the CVT system is along vehicle width side
To setting I/C engine (101) left side.
Fig. 2 shows the side views according to the rear portion of the sulky vehicle of the embodiment of this theme, show swingable twelve Earthly Branches
Support the I/C engine of a pair of of side pipe (109).In addition, Fig. 2 shows the skies that air fuel mixture is supplied to I/C engine
Gas induction system.The air induction system includes air cleaner (201), air cleaner channel (202), throttle body
(302), air inlet pipe (601) and fuel injection valve (301).Air cleaner (201) is located at the two wheeler above rear-wheel (113)
Rear portion (R) on, and the direction of air stream is from the rear portion of sulky vehicle to front.Throttle body (302) is advantageously
It is arranged and is being formed in the space below storage bin and above the crankcase of I/C engine (101).Air cleaner channel
(202) air cleaner (201) outlet is connected to throttle body (302).Whole device be assembled into be easy to assembling and
It is close to when disassembly, once because tool box is removed, it allows tool mobile to approach the clip fastened by screwdriver.Air inlet
It manages (204) and throttle body (302) is connected to cylinder head (not shown).Fuel injection valve (301) is suitably disposed at air inlet
It manages on (601), and this installation of fuel injection valve (201) is the importance of this theme.
Fig. 3 shows the cross-sectional view of I/C engine (101), it is shown that the main component of I/C engine (101), and represent
Show to property the fuel inlet of the fuel injection system of the embodiment according to this theme.I/C engine (101) includes cylinder block
(205), cylinder head (204) is arranged on cylinder block (205), forms combustion chamber (306) in junction.Air fuel mixture exists
Burning in combustion chamber (306), this moves back and forth piston (not shown) in cylinder block (205) and passes to mechanical energy
Rotatable crank axle (not shown), crank axle generate power due to slider crank mechanism.Cylinder head (204) include two into
Air valve, i.e., the vortex air intake valve (308) and tumble flow intake valve operated in swirl port (501) and tumble port (502) (do not show
Out).Valve is operated by the rocker arm (310) activated by camshaft (309).In general, vortex air intake valve (308) and tumble flow intake valve by
Single rocker actuation.Cam chain (not shown) is operably connected rotatable crank shaft (not shown) and camshaft (309), with
It is driven in cylinder head (204).It atmospheric air from throttle body (302) and is sprayed by fuel injection valve (301)
Fuel respectively enters swirl port (501) and tumble port (502).Cylinder head (204) further includes exhaust outlet (307), towards
The end of combustion chamber (306) is controlled by exhaust valve (not shown), and exhaust is guided out combustion chamber (306) by exhaust outlet (307)
To the silencer (111) for the outside for being connected to cylinder head (204).In an embodiment of the present invention, engine is transported with four circulations
Row, i.e. induction stroke, compression stroke, power stroke and exhaust stroke.The burning of air fuel mixture occurs in compression stroke
When terminating to start with power stroke.After being combusted, exhaust gas is generated, cylinder block (204) are discharged during exhaust stroke.
In the exemplary embodiment, throttle body (302) includes throttling valve chest (not shown), idle air control valve
(302b), throttle valve position sensor and throttle valve control system.The valve chest that throttles includes the shell with Venturi tube, literary mound
In pipe for flowing to the entrance atmospheric air of I/C engine (101) under stress.Butterfly valve (not shown) is arranged in Wen
The downstream of pipe can rotate about the axis.The rotation is controlled, can control towards first path (602) or first path (602)
With the air control of both the second path (603).Idle running air shut-off valve (302b) includes electric actuator and individual idling
Airflow circuit is used to control and maintain the idling conditions of I/C engine (101).Throttle valve position sensor is (exemplary
In embodiment, worked based on Hall effect principle) it is able to detect the real-time status of throttle valve position and passes the signal to control
Unit (not shown) processed.
Fig. 4 shows the exploded view of the cylinder head of the embodiment according to this theme, air inlet pipe and fuel injection system.Air inlet
Pipe (601) is placed on the cylinder head air inlet mounting surface (204a) of cylinder head (204).Felt pad (304) is placed on air inlet pipe
(601) between cylinder head air inlet mounting surface (204a).Felt pad (304) is used as flame trap, prevents flame and heat from burning
Room (306) is passed back to air inlet pipe (601).Air inlet pipe (601) includes port flange (608), with threaded hole (608a).Port
Flange (608) has the profile in assembling with the surface matching of cylinder head air inlet mounting surface (204a), and threaded hole
(608a) with fastener, corresponding spiral shell on felt pad (304) and cylinder head air inlet mounting surface (204a) wherein can be inserted
Pit matches.
Fig. 5 shows the side view of the cylinder head (204) of the embodiment according to this theme.Cylinder head (204) is included in face
Cylinder head air inlet mounting surface (204a) on the side at the top of sulky vehicle, surface can receive air inlet pipe (601).Cylinder
Covering (204) includes two air inlet ports, i.e. swirl port (501) and tumble port (502), controls air-fuel mixture
Flowing in combustion chamber (306), and its limited opening is in cylinder head air inlet mounting surface (204a).Tumble port (502) opening deviates
Swirl port (501) is open and swirl port (501) overthe openings is arranged in.Swirl port (501) is parallel to tumble port
(502) combustion chamber (306) are extended to.Swirl port (501) and tumble port (502), which are open, has elliptical shape, and combustion chamber
(306) outlet at is circular.The elliptical shape increases the surface area of port openings, to allow more air and fuel
Entrance, while occupying the smaller space on cylinder head air inlet mounting surface (204a).Swirl port (501) is designed to have and rolling
The profile of flow port (502) compare more deep camber profile, but swirl port (501) have incline towards the lower of valve axis
Gradient.
Fig. 6 a shows front isometric view, and Fig. 6 b shows side view isometric view, and Fig. 6 c shows front view, and schemes
7 show the cross-sectional view of the air inlet pipe (601) of embodiment according to the present invention.Short-circuit bag as described in the present invention is located at air inlet
In the bending part of pipe, so that the biggish fuel droplet generated due to centrifugal action is entered tumble port and makes vortex end
Mouthful flowing is than usual thinner and without bigger drop.This facilitates, the same of eddy generation campaign that charge in cylinder
When, reduce as fuel is sticked on cylinder wall and caused by waste of fuel and facilitate fuel through the oil-control ring on piston
Scrape oil sump.This short circuit cylinder can also reduce discharge, pinking, waste of fuel, the oil dilution of carbon monoxide and NOx.Though
Right tumble port stream (otherwise will not flow during partial throttling), which will carry, recalls fuel and completely burned to generate more preferably
Burning.It is suitable for air inlet pipe is straight situation.It will be not present in the I/C engine (101) with straight tracheae
Centrifugal action, but tumble flow movement also has a significant improvement at this.The short-circuit bag of generation is enough to allow to charge on a small quantity logical just
It crosses tumble port (502) and keeps during partial throttling state through swirl port (501).Due in combustion chamber (306)
It is interior to generate enough turbulent flows, therefore this helps to realize better low side torque and improves efficiency of combustion.
When charging enters combustion chamber (306) from the first path (602) of air inlet pipe (601), swirl port (501) is being filled
Eddy motion is generated in material.When charging enters combustion chamber (306) from the second path (603) of air inlet pipe (601), tumble port
(502) tumble motion is generated in charging.When wandering about as a refugee throttle opening main body (302) and entering air inlet pipe (601), from section
The air of stream valve body (302) is separated.Then, due to partition wall (604), air is maintained in separated stream, until it
In combustion chamber (306) (in addition to the isolated Mixed Zone (620) in the partition wall (604) on air inlet pipe (601) it
It mixes outside).During partial throttling condition, butterfly valve contact between partition wall (604) in throttle body (302) is true
Having protected does not have burden flow in the second path (603) of air inlet pipe (601).Partition wall (604) are increased beyond in throttle valve position
Later, allow to charge and enter the second path (603).This effectively ensures during partial throttling condition only swirl port
It (501) is operable, and two ports can operate during higher throttle valve position and complete throttle valve position.
Short-circuit bag provides bypass between the two streams, and flowing may be not exclusively mutually exclusive.Air inlet pipe and cylinder head into
Near the interface of gas mounting surface (204a), the port end (610) of air inlet pipe is provided with notch/channel on its partition wall.This permits
Perhaps it charges and is diverted to the second path (603) from first path (602), especially during the throttle operation of lower part.Spark plug (305)
It is mounted on cylinder head (204), so that the tip of spark plug is located at the center of combustion chamber (306).Otherwise, it is cut in no bypass
In the case where, it is necessary to it is offset up there are two spark plug in the side opposite with center.During the flow reduction conditions of lower part, charging passes through
Bottom vortex port (501) enters cylinder.Due to short-circuited region, same amount of charging enters also by tumble port (502).Come
It is easier to reach central spark plug than rotation charging from the burden flow of tumble port (502).Since air-fuel mixture is more equal
It is even, which ensure that burning start in advance, flame propagation faster, and burn it is more complete.In addition, this makes it possible to without quick-fried
Advance ignition timing in the case where shake and lean-burn, to have lower braking specific fuel consumption (BSFC) etc..
The short-circuiting percentage for forming Mixed Zone (620) is convenient for the position of fuel injection valve, and wherein injected fuel spray is injected into
Towards swirl port (501) and tumble port (502) in Mixed Zone (620).For the ease of installing fuel injection valve (301),
Air inlet pipe (601) is provided with injector region (605), and injector region (605) have mounting flange and allow fuel injection valve
(301) opening entered.The size of the Mixed Zone (620) of air inlet pipe (601) is appropriately designed so that from air inlet pipe (601)
End to the tip of the partition wall (604) in Mixed Zone (620) vertical distance (D) and two air inlet ports E and F
The ratio of the cross-sectional width of any one of (501 and 502) is between 1.5 to 3.
Fig. 3 and Fig. 7 is shown in the embodiment of this theme when fuel injector arrangement in air inlet pipe (601) with guidance
The fuel spray paths taken when fuel.In the layout of this engine, I/C engine inclination, so that its cylinder bore axis phase
Angle between 0 ° to 15 ° is tilted for horizontal plane.Swirl port (501) and tumble port (502) are towards the upper of sulky vehicle
Side.Air inlet pipe (601) is designed to be able to position and installs fuel injection valve (301), and is one of importance of this theme.
Fuel injection valve (301) is angularly installed at a predetermined angle (θ) with horizontal plane Y-Y, at swirl port (501) and tumble flow end
Fuel injection target is realized on mouth (502).In one embodiment, at fuel injection valve (301) and vehicle horizontal axis (Y-Y)
Predetermined angular (θ) between 75 ° to 88 ° is placed.Fuel injection valve (301) is single-fuel injector pilot fuel type, can be at an angle
Degree sprays injected fuel spray on direction.In one embodiment, spray angle and fuel tip are in the range of 8 ° to 15 °.
In addition, injector tip (P) is arranged at away from cylinder head air inlet mounting surface (204a) scheduled vertical distance (a),
So that vertical distance (a) between the tip and port end (608) of fuel injection valve (301) and two air inlet ports (501 and
Any one of 502) ratio of cross-sectional width E&F is between 2.5 to 3, and fuel injector axis (X-X) is outer
Prolong and does not intersect with partition wall (604).The ratio helps to direct fuel injection into port end (608), with effectively and with
Desired mode enters swirl port (501) and tumble port (502).The position that fuel injection valve is arranged on air inlet pipe (204)
It sets, so that fuel injection is optimised, so that fuel injection target is located on the sharp edges element (304a) of felt pad (304),
Fuel cone (606) and the fuel injection valve (301) wait enter swirl port (501) and tumble port (502) to be separated.
Fuel injection valve (301) is also mounted on the end of bending part (621) of air inlet pipe (601), so that soaking in the smallest wall
In the case where, the injected fuel spray traveling shortest distance reaches the outlet of swirl port (501) and tumble port (502).Air inlet pipe
(601) there is Nonlinear Bending profile and be divided into bending part (621) and straight line portion (622), and wherein bending part
Extend to the tip of fuel injection valve (301) from port end (608), and substantially straight line portion (622) is from fuel injection valve
(301) tip extends to throttle valve end (607).Air inlet pipe (601) has partition wall (604), and partition wall (604) is arranged to make
The width (B) of the first path (602) at throttle valve end (607) is obtained greater than the first path (602) at port end (608)
Width (A), and wherein the width (H) in the second path (603) at throttle valve end (607) be less than or equal in port
The width (G) in the second path (603) at (608) is held, wherein partition wall (604) is than the second path (603) more towards the first via
Diameter (602) biasing.
In view of above disclosure, many modifications and variations of this theme are possible.Therefore, it is wanted in the right of this theme
In the range of asking, the mode that the disclosure can be different from specific descriptions is practiced.
Claims (10)
1. a kind of internal combustion (IC) engine (101), internal combustion (IC) engine (101) include:
Cylinder head (204)；
The cylinder head (204) includes two air inlet ports (501,502) separated by cylinder partition wall (503), and described
Two air inlet ports (501,502) are configured to be directed to air fuel mixture in the I/C engine (101)；
Air cleaner (201) is arranged at the rear of the I/C engine (101)；
Gas handling system connects the air cleaner (201) and described two air inlet ports (501,502), the gas handling system
Include:
Throttle body (302) is configured to the air rate that control is sucked from the air cleaner (201)；Air cleaner
Channel (202) connects the air cleaner (201) and the throttle body (302)；
Air inlet pipe (601) is arranged in the downstream of the throttle body (302), the throttle body (302) is connected to institute
State two air inlet ports (501,502)；The air inlet pipe (601) has Nonlinear Bending profile, with throttle body end
(607) and port end (608)；The air inlet pipe (601) includes that the air inlet pipe (601) is divided into first path (602) and
The partition wall (604) in two paths (603)；And
The throttle body end (607) of the air inlet pipe (601) is connected to the throttle body (302), and described
The port end (608) of air inlet pipe (601) is connected to the cylinder head (204), thus described point of the air inlet pipe (601)
Next door (604) and the cylinder head partition wall (503) series connection, it is characterised in that:
The first path (602) and second path (603) are respectively to described two inlet ends on cylinder head (204)
Each of mouth (501 and 502) supply air fuel mixture, and the air inlet pipe (601) is by being arranged in partition wall
(604) at least one notch in is provided with Mixed Zone (620)；
The air inlet pipe (601) has the fuel injection valve being mounted on air inlet pipe (601) along fuel injector axis (X-X)
(301), the fuel injection valve (301) is configured to fuel being directed to described two air inlets by the Mixed Zone (620)
Port (501,502)；And
The fuel injection valve (301) is mounted so as between fuel injection point (P) and the base portion (Y-Y) of the port end
The ratio of the cross-sectional width (E, F) of at least one of vertical distance (a) and described two air inlet ports (501 and 502) exists
Between 1.5 to 3.
2. internal combustion (IC) engine (101) as described in claim 1, wherein the fuel injection valve (301) is mounted to make to fire
Material ejector axis (X-X) relative to port end base portion (Y-Y) at scheduled acute angle (θ), and the wherein fuel injection
Device axis (X-X) does not intersect with the partition wall (604).
3. internal combustion (IC) engine (101) as described in claim 1, wherein the first path (602) is in the throttle valve
The width (B) at (607) is held to be greater than the width (A) of the first path (602) at the port end (608), and wherein
Width (H) of second path (603) at the throttle valve end (607) is less than or equal to second path (603)
In the width (G) at port end (608), thus the partition wall (604) compared to second path (603) more towards
It is biased to the first path (602).
4. internal combustion (IC) engine (101) as claimed in claim 1 or 3, wherein the fuel injection valve (301) is oriented
The fuel injection angle within the scope of 8 ° to 15 ° for coming from the fuel injection valve (301) tip is provided.
5. internal combustion (IC) engine (101) as described in claim 1, wherein from the air inlet pipe in Mixed Zone (620)
(601) end is into the vertical distance (D) at the tip of the partition wall (604) and described two air inlet ports (501 and 502)
Any one cross-sectional width E or F ratio between 1.5 to 3.
6. internal combustion (IC) engine (101) as described in claim 1, wherein the air inlet pipe (601) has Nonlinear Bending
Profile and be divided into bending part (621) and straight line portion (622), and wherein the bending part part from the port end
(608) tip of the fuel injection valve (301) is extended to, and substantially straight line portion (622) is from the fuel injection valve
(301) the tip extends to the throttle valve end (607).
7. internal combustion (IC) engine (101) as described in claim 1, wherein felt pad (304) is arranged in the air inlet pipe
(601) between the cylinder head (204), the insulator pad (304) has element (304a), by fuel cone
(606) it is separated with the fuel injection valve (301) for entering two air inlet ports (501 and 502).
8. internal combustion (IC) engine (101) as described in claim 1, wherein described two air inlet ports include vortex air intake pipe
With charging air inlet pipe, air fuel mixture is directed to vortex air intake port, the charging air inlet pipe by the vortex air intake pipe
Air fuel mixture is directed to charging air inlet port.
9. internal combustion (IC) engine (101) as claimed in claim 2, wherein the predetermined acute angle (θ) is in 75 to 88 degree
Between.
10. the vehicle that one kind has internal combustion engine as described in claim 1 (101).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201741007383 | 2017-03-02 | ||
| IN201741007383 | 2017-03-02 | ||
| PCT/IB2018/051270 WO2018158698A1 (en) | 2017-03-02 | 2018-02-28 | An air induction system for a two wheeled vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110494643A true CN110494643A (en) | 2019-11-22 |
| CN110494643B CN110494643B (en) | 2021-10-29 |
Family
ID=63369867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880024263.2A Active CN110494643B (en) | 2017-03-02 | 2018-02-28 | Air induction system for two-wheeled vehicle |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110494643B (en) |
| BR (1) | BR112019018086A2 (en) |
| WO (1) | WO2018158698A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021192927A1 (en) * | 2020-03-26 | 2021-09-30 | 本田技研工業株式会社 | Intake device of internal combustion engine for saddle-type vehicle |
| WO2021191920A1 (en) * | 2020-03-26 | 2021-09-30 | Tvs Motor Company Limited | A power unit and an intake member thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0621402A1 (en) * | 1993-04-20 | 1994-10-26 | Hitachi, Ltd. | Apparatus and method of fuel injection and ignition of internal combustion engine |
| EP0953761A2 (en) * | 1998-04-27 | 1999-11-03 | Yamaha Hatsudoki Kabushiki Kaisha | Internal combustion engine with auxiliary intake passage |
| EP1103716A2 (en) * | 1992-08-31 | 2001-05-30 | Hitachi, Ltd. | Air intake arrangement for internal combustion engine |
| JP2001263173A (en) * | 2000-03-14 | 2001-09-26 | Avl List Gmbh | Four cycle engine |
| GB2376046B (en) * | 2001-05-30 | 2003-07-09 | Lotus Car | Light load operation of internal combustion engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4252670B2 (en) * | 1999-05-17 | 2009-04-08 | ヤマハ発動機株式会社 | Engine intake passage structure |
| JP6215807B2 (en) * | 2014-09-30 | 2017-10-18 | 本田技研工業株式会社 | Intake device for internal combustion engine |
-
2018
- 2018-02-28 WO PCT/IB2018/051270 patent/WO2018158698A1/en active Application Filing
- 2018-02-28 CN CN201880024263.2A patent/CN110494643B/en active Active
- 2018-02-28 BR BR112019018086-9A patent/BR112019018086A2/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1103716A2 (en) * | 1992-08-31 | 2001-05-30 | Hitachi, Ltd. | Air intake arrangement for internal combustion engine |
| EP0621402A1 (en) * | 1993-04-20 | 1994-10-26 | Hitachi, Ltd. | Apparatus and method of fuel injection and ignition of internal combustion engine |
| EP0953761A2 (en) * | 1998-04-27 | 1999-11-03 | Yamaha Hatsudoki Kabushiki Kaisha | Internal combustion engine with auxiliary intake passage |
| JP2001263173A (en) * | 2000-03-14 | 2001-09-26 | Avl List Gmbh | Four cycle engine |
| GB2376046B (en) * | 2001-05-30 | 2003-07-09 | Lotus Car | Light load operation of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| BR112019018086A2 (en) | 2020-03-24 |
| CN110494643B (en) | 2021-10-29 |
| WO2018158698A1 (en) | 2018-09-07 |
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