WO2004033883A1 - 狭角v型エンジン - Google Patents
狭角v型エンジン Download PDFInfo
- Publication number
- WO2004033883A1 WO2004033883A1 PCT/JP2003/012892 JP0312892W WO2004033883A1 WO 2004033883 A1 WO2004033883 A1 WO 2004033883A1 JP 0312892 W JP0312892 W JP 0312892W WO 2004033883 A1 WO2004033883 A1 WO 2004033883A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- angle
- engine
- narrow
- banks
- intake
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
- F02B75/221—Multi-cylinder engines with cylinders in V, fan, or star arrangement with cylinder banks in narrow V-arrangement, having a single cylinder head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
Definitions
- the present invention relates to a V-type engine, and particularly to a narrow-angle V-type engine having a small puncture angle.
- the puncture angle of the V-type engine is determined according to the number of cylinders, and is often set to 90 degrees for a 4-cylinder V-type engine and to 120 degrees for a 6-cylinder V-type engine.
- Japanese Patent Application Laid-Open Publication No. Hei 10-110980 issued by the Japan Patent Office in 1989 proposes an engine with a narrow bank angle set at 30 degrees.
- the purpose of the present invention is to arrange the intake port and the exhaust port on one side of the engine respectively. By stopping the engine, the height of the engine is reduced and the conversion efficiency of the exhaust is increased. In addition, the gas flow in the left and right banks is almost the same to achieve even combustion.
- a V-type engine having a plurality of cylinders arranged alternately in two banks, a combustion chamber provided for each cylinder, an intake port connecting the combustion chamber to an intake manifold, and a combustion chamber An exhaust port connecting the chamber to the exhaust manifold is provided, so that the intake ports of the two banks all pass through one puncture, and the exhaust ports of the two punctures all pass through the other puncture
- the angle between the two punctures is set to 8 degrees or less.
- the intake ports of the two banks are combined into one puncture to reduce the height of the engine, and the exhaust ports of the two banks are combined with the other puncture to increase the catalyst conversion efficiency. Since the bank angle is set to 8 degrees or less, the tambou-no-ré ratio can be equalized between the two punctures (see Fig. 9). It is possible to realize combustion without fuel. 'The embodiments of the present invention and the advantages of the present invention will be described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a configuration diagram of a narrow-angle V-type engine according to the present invention.
- FIG. 2 is a diagram for explaining the offset of the biston pins.
- FIG. 3 is a diagram for explaining the structure of the intake side of the engine.
- FIG. 4 is a diagram for explaining the structure of the exhaust side of the engine.
- FIG. 5 is a diagram for explaining the structure of the exhaust side of the engine.
- FIG. 6 is a diagram for explaining valve timing of intake pulp.
- FIG. 7 is a view for explaining a cam mechanism of the engine.
- FIG. 8 is a view for explaining a cam mechanism of the engine.
- FIG. 9 is a diagram showing a relationship between a puncture angle and a tumble ratio.
- FIG. 10 is a diagram for explaining the shape of the g. Description of the preferred embodiment
- the engine is viewed from the front and the left bank is on the left and the right bank is on the right.
- FIG. 1 and 2 show the configuration of a V-type four-cylinder engine according to the present invention.
- a plurality of cylinders 2 each opening on the upper surface of the cylinder block are formed in a row in the longitudinal direction of the engine; in each direction, a piston 4 slides in each cylinder 2. It has been installed as much as possible.
- the piston 3 is swingably connected to the upper end of the connecting rod 4 via a piston pin 5, and the lower part of the connecting rod 4 is connected to a crankshaft 6 via a crankpin.
- the reciprocating motion of the piston 3 is converted into rotation by the crankshaft 6 and transmitted to the drive wheels via a transmission, a final reduction gear, and a drive shaft (not shown).
- the connecting rod 4 and the crankshaft 6 are not the position where the center line of the cylinder in the left bank and the center line of the cylinder in the right bank intersect, but the position where the center line intersects, as seen from the front of the engine. ⁇ . At a position O offset h above the engine. The reason why the crankshaft 6 is set upward as described above is to suppress the height of the engine.
- the piston 3 and the connecting rod 4 are not on the center axis of the cylinder 2 and piston 3 but in the radial direction (cylinder) of the cylinder 2 and piston 3 from the center axis of cylinder 2 and piston 3. 2 and the direction perpendicular to the center axis of the piston 3) and are connected to the center of the engine at an offset of t.
- the offset amount t is set to, for example, about 5% of the cylinder diameter.
- the piston 3 has its crown surface parallel to the upper surface of the cylinder block 1, and the skirt portion closer to the outside of the cylinder block 1 (hereinafter referred to as the thrust side) has cylinders 2 and 3 as compared to the skirt portion closer to the engine center.
- Biston 3 is elongated in the axial direction.
- the top surface of the piston 3 is made parallel to the top surface of the cylinder block 1. This is to achieve rapid combustion.
- the crown surface of the piston 3 flat with the upper surface of the cylinder block 1, the directional component of the flame speed that spreads like a flame can be increased.
- the compression ratio can be increased by making the combustion chamber compact.
- the skirt on the thrust side reduces the thrust because the position of the piston pin 5 is offset, and when the piston 3 slides, a momentum is exerted around the piston 5 and the piston 3 tilts. Therefore, the length of the skirt on the thrust side of the piston 3 is made longer to support the piston 3 and to stabilize the posture of the piston 3 during the reciprocating motion. Further, since the side force acting on the inner wall of the cylinder is increased by offsetting the crankshaft 6 upward, the area of the scart portion is increased to reduce the surface pressure. .Elongating the skirt is also effective in reducing the sound of the piston 3 (slap sound). Note that only the skirt part of the thrust-toe rule is extended, and the inner skirt part remains the same. Therefore, even when the biston 3 descends and reaches the bottom dead center, the rotation of the biston 3 and the counterweight is performed. Do not interfere.
- Cylinder 2 consists of a left punctured cylinder and a right bank cylinder from the front of the engine.
- the cylinders are alternately arranged in a zigzag pattern so that they are not arranged consecutively in the same puncture, and alternately in the left and right banks so that there are no cylinders at the same distance from the front end of the engine. Be placed.
- the angle 0 (hereinafter, puncture angle) formed by the center line of the left puncture cylinder and the center line of the right puncture cylinder when the engine is viewed from the front is reduced to 8 degrees or less (preferably 8 degrees). Set. The reason why the temperature is set to 8 degrees or less is to make the tumble ratio substantially equal between the left and right punctures to realize stable combustion, and this point will be described in detail later.
- a single cylinder head 10 is connected to the upper surface of the cylinder block 1.
- the reason why the left and right banks can be made into one cylinder head is that the bank angle is small.By sharing the cylinder head between the left and right banks, the rigidity of the engine can be kept high. it can.
- a concave portion 11 that forms a part of the combustion chamber is formed.
- An intake port 20 and an exhaust port 30 are opened in the turning part 11, and an ignition gap of the ignition plug 7 protrudes.
- the left puncture combustion chamber is provided with an intake valve 21 L and an exhaust valve 31 L to cut off communication with the intake port 20 and exhaust port 30.
- Left bank exhaust valve 31 L is left camshaft 40
- left puncture intake valve 21 L and right bank exhaust valve 31 R is center camshaft 41
- right bank intake valve 21 R is right cam.
- Each of the shafts 42 is driven to open and close.
- the intake port 20 is connected via an intake manifold 50 to a box-shaped collector 60 into which fresh air is introduced, and the exhaust port 30 is shown via an exhaust manifold 70 Not connected to the exhaust pipe.
- the pipe length of the intake manifold 50 is changed according to the length of the intake port 20 so that the left and right punctured intake ports 20 are formed. It compensates for the difference in length. That is, the intake manifold 50 connected to the intake port 20 of the right bank, which is shorter than that of the left puncture, is extended to the inside of the collector 60. The distance from 0 to the intake manifold opening is made equal.
- the closing timing of the intake valve may be varied between the left and right banks to compensate for the difference in the length of the intake ports 20 between the left and right banks. If the timing of closing the intake valve for the left puncture where the ⁇ ⁇ intake port 20 is longer than the right puncture is delayed from the right bank, the volumetric efficiency can be made equal between the left and right punctures.
- the length of the branch of the exhaust manifold 70 is changed according to the length of the exhaust port 3 ⁇ , so that the left and right Exhaust port 30 different length! / ⁇ is compensated.
- the bending of the exhaust manifold 70 is increased and the length of the branch is increased, so that all the combustion chambers are separated from the combustion chamber.
- the length of the pipe from the exhaust port 30 to the collecting section 71 of the exhaust manifold 70 is set equal.
- injectors 80R and 80L for injecting fuel are provided on the P side and the air side, and the injectors 80R and 80L are mounted at left and right punctures. Is different. That is, a portion of the intake port 20 communicating with the combustion chamber of the left bank is provided with a fuel injector 80 L for injecting fuel into the air supplied to the combustion chamber of the left puncture, and the intake manifold 5 is provided. ⁇ The part that communicates with the combustion chamber of the right bank is a fuel injector for injecting fuel into the air supplied to the combustion chamber of the right puncture. 8 ORs are provided.
- the reason why the injector mounting position is changed between the left puncture and the right bank is that the fuel injection position (the position of the injector 80R and 80L injection ports) is used for all the combustion chambers in the left puncture and the right bank. This is to equalize the mixture state of the air-fuel mixture and reduce the output due to uneven mixing of the air-fuel mixture and uneven distribution of fuel and air. Drops can be avoided.
- the exhaust gas can be collected while hot and flow to the exhaust pipe, keeping the temperature of the exhaust gas flowing into the catalyst high and keeping the temperature of the catalyst high. Conversion efficiency can be improved. As a result, the warm-up force s of the exhaust catalyst immediately after the start of the engine is promoted, and the exhaust gas purification efficiency in a cold state can be improved. Further, since the lengths from the combustion chamber to the collecting portion 71 of the exhaust manifold 70 are equalized, a decrease in exhaust efficiency can be further reduced.
- the cylinder head 10 rotatably supports three camshafts 40, 41, and 42.
- the cam gears 43, 4 , 45 are provided.
- the intake valves 21 R, 21 L and the exhaust pulp 31 R, 31 L are driven by cam surfaces formed on the outer circumference of these three camshafts.
- the bank angle By reducing the bank angle to 8 degrees or less, the distance between the cylinders in the left and right banks is reduced, the cylinder head 10 can be united by the left and right punctures, and the intake valve 2 1 in the left bank
- the camshaft driving the L and the camshaft driving the right punctured exhaust pulp 31R can be shared. Therefore, in the engine according to the present invention, the number of camshafts can be reduced to three in spite of the DOHC type V engine.
- the cam gears 4 3, 4 4, 4 5 are gears of the same diameter, the cam gear 4 3 and the cam gear 4 4 mesh, and the cam gear 4 4 and the cam gear 4 5 And are intertwined.
- the cam gear 44 of the central camshaft 41 meshes with the idler gear 47 that rotates integrally with the force spring 46.
- This idle gear 47 also has the same diameter as the cam gears 43, 44, 45.
- a chain is hung between the cam sprocket 46 and a crank sprocket (not shown) that rotates integrally with the crankshaft 6, and the rotation of the crankshaft 6 causes the crank sprocket and the cam sprocket to rotate. It is transmitted to cam gears 43, 44, 45 via 46, and the camshafts 40, 41, 42 are rotationally driven as indicated by arrows in the figure.
- the cam sprocket 46 rotates at half the speed of the crank sprocket.
- the cam drive mechanism can be made compact, and the number of parts can be reduced.
- the chain drive is used here between the crank sprocket and the cam sprocket 46, the drive during this period may be a gear drive.
- FIG. 9 shows the relationship between the bank angle and the tumble ratio.
- the tumble ratio is the ratio between the average speed of the intake air and the speed of the tumble flow, and it is necessary to equalize the tumble ratios of the left and right banks in order to achieve unbiased combustion.
- the intake port and the air port are grouped on one side of the engine.
- the intake flow angle of one bank (the tangent to the center line of the intake port just before the valve seat and the cylinder center line) Angle) increases, and the vertical gas flow generated in the cylinder is hindered, causing a difference in the tumble ratio between the left and right banks, resulting in uneven combustion. Also, as the inflow angle increases, the intake resistance also increases.
- the bank angle by setting the bank angle to 8 degrees or less, the ratio of the vertical vortex generated by flowing into the cylinder 2 from each intake valve, that is, the tumble ratio, is changed to the left and right puncture. And make the left and right banks burn Can be equalized.
- the combustion interval is shifted in the left and right banks by an amount corresponding to the bank angle.
- the puncture angle is set to 8 degrees or less.
- the crankshaft 6 can be a single plane. That is, as shown in (a) and (b) of Fig. 10, the crankpins for cylinders 1 and 4 are in phase, respectively, and the crankpins for cylinders 2 and 3 are 180 ° each. It is in phase and all crank pins can be located in one plane. If the crankshaft 6 can be made a single plane, the manufacture of the crankshaft 6 becomes easy, and the cost can be reduced.
- the two-cylinder engine is alternately combined so that the two combustion intervals are substantially equal.
- each of the two-cylinder engines is balanced by the primary vibration, and there is no problem in terms of vibration even if these are combined, so it can be said that the above-mentioned engine also has no problem in vibration.
- the above-described embodiment is a four-cylinder V-type engine.
- the present invention can be applied to a V-type engine having a different number of cylinders such as a six-cylinder cylinder and eight cylinders.
- the number of cylinders is not limited to an even number and may be an odd number.
- two of the above 4-cylinder V-type engines are combined in parallel, and an 8-cylinder W-type It can also be an engine.
- the present invention can be applied to a narrow-angle V-type engine having a small bank angle, and can reduce the height of the engine and reduce the size of the engine while increasing the air conversion efficiency and the engine combustion efficiency. Useful.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03754032A EP1553280B1 (en) | 2002-10-11 | 2003-10-08 | Narrow-angle v-type engine |
DE60313992T DE60313992T2 (de) | 2002-10-11 | 2003-10-08 | Spitzwinkliger v-motor |
US10/529,944 US7219632B2 (en) | 2002-10-11 | 2003-10-08 | Narrow angle V-type engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002298686A JP2004132296A (ja) | 2002-10-11 | 2002-10-11 | 狭角v型エンジン |
JP2002-298686 | 2002-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004033883A1 true WO2004033883A1 (ja) | 2004-04-22 |
Family
ID=32089319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/012892 WO2004033883A1 (ja) | 2002-10-11 | 2003-10-08 | 狭角v型エンジン |
Country Status (9)
Country | Link |
---|---|
US (1) | US7219632B2 (ja) |
EP (1) | EP1553280B1 (ja) |
JP (1) | JP2004132296A (ja) |
KR (1) | KR100734983B1 (ja) |
CN (1) | CN100549386C (ja) |
DE (1) | DE60313992T2 (ja) |
MY (1) | MY135645A (ja) |
TW (1) | TW200405923A (ja) |
WO (1) | WO2004033883A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006026960A1 (de) * | 2004-09-05 | 2006-03-16 | Clemens Neese | Kraftrad mit kompakter verbrennungskraftmaschine |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7367294B2 (en) * | 2006-03-14 | 2008-05-06 | Gm Global Technology Operations, Inc. | Cylinder head with integral tuned exhaust manifold |
JP2007285168A (ja) * | 2006-04-14 | 2007-11-01 | Toyota Motor Corp | 内燃機関のシリンダヘッド構造 |
DE102006048108A1 (de) * | 2006-10-11 | 2008-04-30 | Audi Ag | V-Motor |
JP4810490B2 (ja) * | 2007-03-30 | 2011-11-09 | 本田技研工業株式会社 | 車両用v型エンジン |
US7966986B2 (en) * | 2007-04-13 | 2011-06-28 | Hyspan Precision Products, Inc. | Cylinder head |
US8905801B1 (en) | 2007-12-31 | 2014-12-09 | Brp Us Inc. | Marine outboard motor |
CA2798449C (en) * | 2010-05-26 | 2018-10-30 | Horex Gmbh | Motorcycle having a compact internal combustion engine |
DE102016117253B4 (de) | 2016-09-14 | 2018-04-19 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Nockenwellenanordnung für Brennkraftmaschinen mit VR-Zylinderanordnung |
CN113153507B (zh) * | 2020-07-15 | 2022-04-22 | 长城汽车股份有限公司 | 集成排气歧管及具有其的发动机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62228645A (ja) * | 1986-03-29 | 1987-10-07 | Mazda Motor Corp | V型エンジン |
JPS63143332A (ja) * | 1986-12-05 | 1988-06-15 | Honda Motor Co Ltd | 多気筒型内燃機関 |
JPH09250408A (ja) * | 1996-03-14 | 1997-09-22 | Toyota Motor Corp | 内燃機関の吸気装置における吸気管配設構造 |
JP2001200728A (ja) * | 2000-12-18 | 2001-07-27 | Honda Motor Co Ltd | バーチカルエンジン |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1531430A (en) * | 1919-03-26 | 1925-03-31 | Mrs Maud V Wrentmore | Internal-combustion engine |
US3626815A (en) | 1970-05-25 | 1971-12-14 | American Motors Corp | Piston |
DE2740173A1 (de) * | 1977-09-07 | 1979-03-08 | Volkswagenwerk Ag | Brennkraftmaschine in v-bauweise |
DE2836833A1 (de) * | 1978-08-23 | 1980-04-10 | Volkswagenwerk Ag | Brennkraftmaschine mit in zwei reihen angeordneten zylindern |
JPS61218718A (ja) * | 1985-03-22 | 1986-09-29 | Mazda Motor Corp | エンジンの吸気系構造 |
FR2618183B1 (fr) * | 1987-07-17 | 1989-12-22 | Peugeot | Culasse pour un moteur en v ferme. |
FR2618851B1 (fr) * | 1987-07-30 | 1992-07-10 | Peugeot | Culasse pour un moteur en v ferme ayant un seul arbre a cames |
JPH10121980A (ja) | 1996-10-24 | 1998-05-12 | Aichi Mach Ind Co Ltd | V型6気筒エンジン |
-
2002
- 2002-10-11 JP JP2002298686A patent/JP2004132296A/ja active Pending
-
2003
- 2003-08-12 CN CNB031277659A patent/CN100549386C/zh not_active Expired - Fee Related
- 2003-10-07 TW TW092127770A patent/TW200405923A/zh not_active IP Right Cessation
- 2003-10-08 KR KR1020057006042A patent/KR100734983B1/ko not_active IP Right Cessation
- 2003-10-08 DE DE60313992T patent/DE60313992T2/de not_active Expired - Lifetime
- 2003-10-08 EP EP03754032A patent/EP1553280B1/en not_active Expired - Fee Related
- 2003-10-08 WO PCT/JP2003/012892 patent/WO2004033883A1/ja active IP Right Grant
- 2003-10-08 US US10/529,944 patent/US7219632B2/en not_active Expired - Fee Related
- 2003-10-11 MY MYPI20033885A patent/MY135645A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62228645A (ja) * | 1986-03-29 | 1987-10-07 | Mazda Motor Corp | V型エンジン |
JPS63143332A (ja) * | 1986-12-05 | 1988-06-15 | Honda Motor Co Ltd | 多気筒型内燃機関 |
JPH09250408A (ja) * | 1996-03-14 | 1997-09-22 | Toyota Motor Corp | 内燃機関の吸気装置における吸気管配設構造 |
JP2001200728A (ja) * | 2000-12-18 | 2001-07-27 | Honda Motor Co Ltd | バーチカルエンジン |
Non-Patent Citations (1)
Title |
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See also references of EP1553280A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006026960A1 (de) * | 2004-09-05 | 2006-03-16 | Clemens Neese | Kraftrad mit kompakter verbrennungskraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
KR20050055753A (ko) | 2005-06-13 |
TWI301172B (ja) | 2008-09-21 |
US7219632B2 (en) | 2007-05-22 |
EP1553280A4 (en) | 2005-10-19 |
DE60313992T2 (de) | 2007-09-20 |
TW200405923A (en) | 2004-04-16 |
CN1488846A (zh) | 2004-04-14 |
KR100734983B1 (ko) | 2007-07-06 |
DE60313992D1 (de) | 2007-07-05 |
EP1553280B1 (en) | 2007-05-23 |
JP2004132296A (ja) | 2004-04-30 |
EP1553280A1 (en) | 2005-07-13 |
CN100549386C (zh) | 2009-10-14 |
US20060011153A1 (en) | 2006-01-19 |
MY135645A (en) | 2008-05-30 |
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