WO2011135948A1 - 2サイクルエンジンの掃気通路構造 - Google Patents
2サイクルエンジンの掃気通路構造 Download PDFInfo
- Publication number
- WO2011135948A1 WO2011135948A1 PCT/JP2011/056870 JP2011056870W WO2011135948A1 WO 2011135948 A1 WO2011135948 A1 WO 2011135948A1 JP 2011056870 W JP2011056870 W JP 2011056870W WO 2011135948 A1 WO2011135948 A1 WO 2011135948A1
- Authority
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- WIPO (PCT)
- Prior art keywords
- crankcase
- lid member
- scavenging passage
- scavenging
- wall surface
- Prior art date
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Classifications
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- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/02—Engines characterised by using fresh charge for scavenging cylinders using unidirectional scavenging
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- 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
- F02F1/004—Cylinder liners
-
- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
-
- 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
- F02F1/002—Integrally formed cylinders and cylinder heads
-
- 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
- F02F1/18—Other cylinders
- F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
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- 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
- F02F7/00—Casings, e.g. crankcases or frames
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0002—Cylinder arrangements
- F02F7/0004—Crankcases of one-cylinder engines
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0021—Construction
- F02F7/0036—Casings for two-stroke engines with scavenging conduits
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- 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
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Definitions
- the present invention relates to a scavenging passage structure for a two-cycle engine in which a scavenging passage that communicates a scavenging port provided in a cylinder and a crank chamber inside the crankcase is formed through a clamping surface between the cylinder and the crankcase. Is.
- the scavenging passage that opens in the crank chamber formed in the crankcase reaches the tightening surface between the crankcase and the cylinder through a smooth curved path inside the crankcase and penetrates the scavenging passage. And it is connected to the scavenging port provided in the cylinder.
- FIG. 8 is an exploded perspective view of a crankcase and a cylinder of a conventional two-cycle engine.
- 9 is a cross-sectional view taken along the line FF in FIG. 8, which is a cross-sectional view perpendicular to the crankshaft of the crankcase of the conventional two-cycle engine
- FIG. 10 is a view taken in the direction of arrows GG in FIG. It is a top view of a crankcase.
- FIG. 11 is a cross-sectional view in the HH direction in FIG.
- reference numeral 101 denotes a cylinder, and a combustion chamber is formed in the cylinder 101.
- a piston 130 that reciprocates in the cylinder 101 and a crankshaft 108 for converting the reciprocating motion of the piston 130 into a rotational force are provided.
- crankcase 102 is a crankcase, and a crank chamber 106 is formed inside the crankcase 102.
- Reference numeral 140 denotes a scavenging port provided so as to face two of the side surfaces of the cylinder 101, and only one of them is shown in FIG.
- Each of the scavenging ports 140 is connected to the crank chamber 106 via a scavenging passage 104b in the cylinder 101, a scavenging passage 104a provided in a curved shape in the walls on both sides of the crankcase 102, and a pair of scavenging passage inlets 104c. Communicated with.
- 118 is an air passage for supplying the leading air, and is connected in the middle of the scavenging passage 104b so that the leading air from the air cleaner is supplied to the scavenging port 140 through the air passage 118 and the scavenging passage 104b.
- an air passage for supplying leading air is formed in the upper passage 132 a inside the insulator 132.
- the air passage is connected in the middle of the scavenging passage 104b, and the leading air is supplied to the scavenging port 140 through the air passage 118 and the scavenging passage 104b.
- an air-fuel mixture passage for supplying air-fuel mixture into the crank chamber 106 is formed in the lower passage 132b inside the insulator 132.
- the mixture passage communicates with the inside of the cylinder 101 via the intake port 142.
- the crankcase 102 includes a front crankcase 102 a and a rear crankcase 102 b that are divided front and rear by a front and rear dividing surface 125 that is perpendicular to the crankshaft center 180.
- the front crankcase 102a and the rear crankcase 102b are integrated by being tightened by a plurality of bolts using bolt holes 126 after the crankshaft 108 and the like are incorporated therein.
- 103 is a smooth cylinder mounting surface formed on the upper part of the crankcase 102, and the lower surface 103 'of the cylinder 101 is in contact with the cylinder mounting surface 103 and fixed by a plurality of bolts 114.
- the scavenging passage 104a and the scavenging passage inlet 104c are formed symmetrically with respect to the front and rear dividing surfaces 125, respectively.
- the upper end of the scavenging passage 104 a opens to the cylinder mounting surface 103.
- Reference numeral 110 denotes a guide member, which is inserted from the opening of the cylinder mounting surface 103.
- the upper surface forms a part of the cylinder mounting surface 103, and a passage surface that is smoothly connected to the scavenging passage 104a is formed.
- the guide member 110 is fixed to the crankcase 102 by, for example, providing protrusions on the upper surface and the side portions, and forming grooves in the crankcase 102 and fitting the protrusions in the grooves. .
- the air-fuel mixture from the crank chamber 106 formed in the crankcase 102 is smoothly curved via the scavenging passage inlet 104c.
- a guide member 110 having a passage surface formed on the scavenging passage is introduced into a scavenging passage 104a partially configured to flow through the scavenging passage 104a formed in a smooth curved path and formed in the cylinder.
- the gas flows through 104 b and is supplied to the scavenging port 140.
- the air-fuel mixture is supplied to the scavenging port 140 as a smooth and strong flow through the scavenging passage 104a formed in a smooth curved path having a right angle and no bending, without causing a flow loss such as a decrease in flow velocity. It will be.
- FIG. 8 A conventional scavenging passage structure of a two-cycle engine using the guide member described with reference to FIGS. 8 to 11 is disclosed in Patent Document 1.
- FIG. 8 A conventional scavenging passage structure of a two-cycle engine using the guide member described with reference to FIGS. 8 to 11 is disclosed in Patent Document 1.
- the front crankcase 102a and the rear crankcase 102b are provided.
- a slide mold for forming a scavenging passage is required.
- a slide mold that is slidable in the direction of the cylinder mounting surface 103 is inserted into a portion that forms the scavenging passage 104a to perform mold casting, and then the slide mold is slid in the direction of the cylinder mounting surface 103. Extract and die.
- the scavenging passage 104a is formed by inserting and fixing the guide member 110 into a part of the portion where the slide mold is present. That is, the overall mold cost is increased due to the presence of the slide mold.
- the use of the slide mold increases the number of steps for forming the scavenging passage of the two-cycle engine and increases the cost for forming the scavenging passage.
- the present invention eliminates the manufacturing cost caused by using a slide mold, so that a scavenging port and a crankcase provided in the cylinder can be used without using a slide mold. It is an object of the present invention to provide a scavenging passage structure for a two-cycle engine capable of forming a scavenging passage communicating with an internal crank chamber.
- a scavenging passage that communicates a scavenging port provided in a cylinder and a crank chamber formed inside the crankcase is provided, and the scavenging passage is connected to the cylinder and the crankcase.
- the scavenging passage structure of the two-cycle engine formed through the fastening surface of the crankcase the scavenging passage structure has a lid member attached in contact with the inner wall surface of the crankcase inside the crankcase, A groove portion constituting a part of the scavenging passage connected to the crank chamber and the upper surface of the crankcase is provided on a contact surface with the lid member.
- the groove portion may be provided to be recessed in the inner wall surface of the crankcase, and the lid member may be attached in contact with the inner wall surface of the crankcase by closing the opening of the groove portion.
- the groove portion may be provided to be recessed in the lid member, and the lid member may be attached in contact with the inner wall surface of the crankcase while closing the open portion of the groove portion.
- the groove is provided in a recessed manner on both the inner wall surface of the crankcase and the lid member
- the lid member includes a groove portion provided on the inner wall surface of the crankcase and a groove portion provided on the lid member, respectively. It is good that it is attached in contact with the crankcase so that the open parts of the two face each other. As a result, the manufacturing cost can be reduced by eliminating the need for a slide mold, and the attachment position of the lid member to the crankcase is determined by the position of the groove provided in each of the crankcase and the lid member. Positioning of the attachment position of the member to the crankcase is facilitated.
- the lid member may be fitted between the inner wall surfaces facing each other of the crankcase and the attachment position is positioned, and the lid member is attached to the inner wall surface.
- a scavenging passage structure for a two-cycle engine capable of forming a scavenging passage that communicates a scavenging port provided in a cylinder with a crank chamber inside a crankcase without using a sliding mold. It can be provided, and the production cost generated by using the slide mold can be reduced.
- FIG. 2 is a configuration diagram in a direction perpendicular to a crankshaft showing a scavenging passage structure of a two-cycle engine according to the first embodiment.
- FIG. 3 is a cross-sectional view perpendicular to the crankshaft center of the crankcase in which the scavenging passage of the two-cycle engine according to the first embodiment is formed.
- FIG. 3 is an AA arrow view in FIG. 2.
- FIG. 4 is a cross-sectional view in the BB direction in FIG. 3. It is a perspective view of the rear crankcase 2b.
- FIG. 6 is a schematic view around a scavenging passage according to a second embodiment.
- FIG. 6 is a schematic view around a scavenging passage according to a third embodiment.
- FIG. 10 is a GG direction arrow view in FIG. 9.
- FIG. 11 is a cross-sectional view in the HH direction in FIG. 10.
- (Embodiment 1) 1 is a cross-sectional view perpendicular to the crankshaft of a crankcase and a cylinder of a two-cycle engine according to Embodiment 1 of the present invention.
- 2 is a cross-sectional view perpendicular to the crankshaft center of the crankcase in which the scavenging passage of the two-cycle engine according to Embodiment 1 of the present invention is formed, and corresponds to the CC cross-sectional view in FIG. 3 is a view taken in the direction of arrows AA in FIG. 2, and FIG. 4 is a sectional view in the direction BB in FIG.
- the crankcase 2 includes a front crankcase 2a and a rear crankcase 2b which are divided front and rear by a front and rear dividing surface 25 perpendicular to the crankshaft 80.
- the front crankcase 2a and the rear crankcase 2b After the shaft 8 or the like is assembled, it is tightened and integrated with a plurality of bolts 26.
- FIG. 5 is a perspective view of the rear crankcase 2b
- FIG. 3 is a DD cross-sectional view in FIG.
- reference numeral 1 denotes an engine, which is configured as described below.
- Reference numeral 12 denotes a cylinder, and the crankcase 2 and the cylinder 12 are tightened via a gasket with a plurality of bolts 14 on the cylinder mounting surface 3 on the upper surface of the crankcase 2 and the lower surface 3 ′ of the cylinder, which are the respective tightening surfaces. It has been.
- Reference numeral 16 denotes an exhaust port opened on the side of the cylinder 12, which is connected to the exhaust passage.
- a scavenging passage 4 b formed in the cylinder 12 is connected to the scavenging port 40.
- Reference numeral 4 c denotes a scavenging passage inlet that opens into the crank chamber 6 formed in the crankcase 2.
- a scavenging passage 4a provided in the crankcase 2 is formed by a smooth curved path and passes through the tightening surfaces 3 and 3 'between the crankcase 2 and the cylinder 12, thereby scavenging the inside of the cylinder 12.
- the passage 4b and the scavenging passage inlet 4c are connected. With this configuration, the scavenging port 40 communicates with the crank chamber 6 through the scavenging passage 4b, the scavenging passage 4a, and the scavenging passage inlet 4c.
- Reference numeral 18 denotes an air passage for leading air supply, which is connected in the middle of the scavenging passage 4b so that the leading air from an air cleaner (not shown) is supplied to the scavenging port 40 through the air passage 18 and the scavenging passage 4b. It has become.
- the scavenging passage 4a in the crankcase 2 is formed as follows. As shown in FIG. 3, the crankcase 2 is provided with a groove 21 recessed in the direction of the crankshaft 80 on the contact surface with the lid member 22. The groove 21 is open toward the inside of the crankcase 2, and the portion other than the open side is formed by a smooth curved path so as to form the scavenging passage 4a.
- a lid member 22 is attached to the open side of the groove 21 provided in the crankcase 2 so as to contact the inner wall surface 2c of the crankcase 2.
- the lid member 22 closes the open side of the groove 21 and is attached in contact with the inner wall surface of the crankcase 2 and is fixed to the crankcase 2 by a fixing member 23 such as a bolt.
- crankcase 2 is formed with two opposing inner wall surfaces 2d at both ends of the inner wall surface 2c provided with the groove 21, and the lid member 22 is fitted between the two inner wall surfaces 2d. By fitting the lid member 22 between the two inner wall surfaces 2d facing each other, the mounting position of the lid member 22 is determined.
- the air-fuel mixture from the crank chamber 6 formed in the crankcase 2 is smoothly curved via the scavenging passage inlet 4c. Is introduced into the scavenging passage 4a, and flows through the scavenging passage 4a and the scavenging passage 4b to be supplied to the scavenging port 40. Accordingly, the air-fuel mixture is supplied to the scavenging port 9 as a smooth and strong flow through the scavenging passage 4a formed in a smooth curved path having no right-angled bending or the like without causing a flow loss such as a decrease in flow velocity. It will be.
- the scavenging passage 4 a in the crankcase 2 is configured by the groove 21 provided on the contact surface 2 c with the lid member 22 of the crankcase 2 and the lid member 22. Therefore, the rear crankcase 2b performs mold casting using a mold in which the groove portion 21 is formed, and then closes the lid portion 22 from the front / rear dividing surface 25 side to the open side of the groove 21 to thereby form the rear crankcase. It can manufacture by making it contact with the inner wall face 2c of 2b, and fixing with the volt
- the front crankcase 2a is manufactured in the same manner as the rear crankcase 2b, and then the front crankcase 2a and the rear crankcase 2b are tightened and integrated with a bolt 26 to complete the crankcase 2.
- the lid member 22 a part of the space inside the crankcase 2 is filled with the lid member 22. If the space inside the crankcase 2 is extremely large, a reduction in the compression ratio of the crankcase 2 occurs. However, the reduction in the compression ratio can be prevented by providing the cover member 22.
- FIG. 6 is a top view of the vicinity of the scavenging passage provided in the crankcase according to the second embodiment, and corresponds to an enlarged view of the E portion shown in FIG. 3 in the first embodiment.
- the second embodiment is the same as the first embodiment described with reference to FIGS. 1 to 5 except for the configuration of the scavenging passage 4a.
- the crankcase 2 is not provided with a groove, but is provided with a groove 21a that is recessed in the direction of the crankshaft 80 on the contact surface of the lid member 22 with the inner wall surface of the crankcase.
- the groove 21a is open on the surface facing the inner wall surface 2c of the crankcase 2 in contact with the lid member 22, and the portion other than the open side is formed with a smooth curve so as to form the scavenging passage 4a. ing.
- the open side of the groove 21 a provided in the lid member 22 is attached in contact with the inner wall surface of the crankcase 2.
- the lid member 22 closes the open side of the groove 21a, is attached in contact with the inner wall surface of the crankcase 2, is positioned by a fixing member such as a bolt, and is fixed to the inner wall surface 2c of the crankcase 2. .
- the groove 21 a can be provided in the lid member 22 instead of the crankcase 2.
- the manufacturing cost can be reduced because the slide mold is not required as in the first embodiment, and the mold used for manufacturing the crankcase can be simplified.
- FIG. 7 is a top view of the periphery of the scavenging passage provided in the crankcase according to the third embodiment, and corresponds to an enlarged view of the A portion shown in FIG. 3 in the first embodiment.
- the third embodiment is the same as the first embodiment described with reference to FIGS. 1 to 5 except for the configuration of the scavenging passage 4a.
- grooves 21b and 21c that are recessed in the direction of the crankshaft 80 are provided on both the contact surface of the crankcase 2 with the lid member 22 and the contact surface of the lid member 22 with the inner wall surface of the crankcase. It has been.
- the inner wall surface 2c of the crankcase 2 which is a contact surface with the lid member 22 is opened. Further, the contact surface of the lid member 22 with the crankcase 2 is opened in the groove 21c.
- the scavenging passage 4a having a smooth curve is formed by the grooves 21b and 21c.
- the groove 21b and the groove 21c are provided in the crankcase 2 and the lid member 22, respectively.
- the lid member 22 is attached to the inner wall surface of the crankcase 2, is positioned by a fixing member such as a bolt, and is fixed to the crankcase 2.
- the manufacturing cost can be reduced by eliminating the need for the slide mold as in the first embodiment, and the attachment position of the lid member 21b to the crankcase 2 is determined by the positions of the grooves 21b and 21c. Therefore, positioning of the attachment position of the lid member 22 to the crankcase 2 is facilitated.
- It can be used as a scavenging passage structure for a two-cycle engine that can form a scavenging passage that communicates a scavenging port provided in the cylinder with a crank chamber inside the crankcase without using a sliding mold.
Abstract
Description
また、前記スライド金型を使用することで、2サイクルエンジンの掃気通路を形成するための工程が増えるとともに、掃気通路の形成にかかるコストが高くなるという課題がある。
これにより、蓋部材には溝部を設ける必要がなく、蓋部材が汎用性のあるものとなる。そのため、蓋部材の不良時などの交換を安価に行うことができる。
これによりスライド金型が不要であることによる製造コストの低減が実現できるとともに、クランクケースに溝部を設けないのでクランクケースを製造する際に使用する金型の形態を単純なものにすることができる。
これにより、スライド金型が不要であることによる製造コストの低減が実現できるとともに、蓋部材のクランクケースへの取り付け位置がクランクケース及び蓋部材それぞれに設けた溝部の位置によって決定されるため、蓋部材のクランクケースへの取り付け位置の位置決めが容易になる。
これにより、簡単に且つ間違いなく蓋部材とクランクケースとの位置決めを行うことができ、確実に掃気通路を形成させることができる。
図1は本発明の実施形態1に係る2サイクルエンジンのクランクケース及びシリンダのクランク軸心に直角方向の断面図である。また、図2は本発明の実施形態1に係る2サイクルエンジンの掃気通路が形成されるクランクケースのクランク軸心に直角方向の断面図であって図3におけるC-C断面図に相当する。図3は図2におけるA-A方向矢視図、図4は図3におけるB-B方向断面図である。
従って、スライド金型を使用する必要がないため、スライド金型の制作費が不要となる。よって、2サイクルエンジンの掃気通路を構成するために必要な製作コストを削減することができる。
図6は実施形態2に係るクランクケースに設けられる掃気通路周辺の上面図であり、実施形態2における、実施形態1で図3に示したE部の拡大図に相当する部分である。実施形態2においては、掃気通路4aの構成以外は図1~図5を用いて説明した実施形態1と同じである。
実施形態2においては、クランクケース2には溝部が設けられておらず、蓋部材22のクランクケース内壁面との接触面にクランク軸心80方向に凹設された溝21aが設けられている。溝21aは、蓋部材22と接触するクランクケース2の内壁面2cと対向する面側が開放されており、その開放側以外の部分は、掃気通路4aを形成するように滑らかな曲線にて形成されている。
これにより実施形態1と同様にスライド金型が不要であることによる製造コストの低減が実現できるとともに、クランクケースを製造する際に使用する金型の形態を単純なものにすることができる。
図7は実施形態3に係るクランクケースに設けられる掃気通路周辺の上面図であり、実施形態3における、実施形態1で図3に示したA部の拡大図に相当する部分である。実施形態3においては、掃気通路4aの構成以外は図1~図5を用いて説明した実施形態1と同じである。
実施形態3においては、クランクケース2の蓋部材22との接触面及び蓋部材22のクランクケース内壁面との接触面の両方に、クランク軸心80方向に凹設された溝21b、21cが設けられている。溝21bは、蓋部材22との接触面であるクランクケース2の内壁面2cが開放されている。また、溝21cは、蓋部材22のクランクケース2との接触面が開放されている。溝21bと溝21cとのそれぞれの開放側を対向させてクランクケース2の内壁面と蓋部材22とを接触して取り付けることで、溝21bと溝21cにより滑らかな曲線の掃気通路4aが形成されるように、溝21b及び溝21cはそれぞれクランクケース2、蓋部材22に設けられている。
蓋部材22は、クランクケース2の内壁面に取り付けられ、ボルトなどの固定部材で位置決めされてクランクケース2に固定されている。
これにより、実施形態1と同様にスライド金型が不要であることによる製造コストの低減が実現できることに加えて、蓋部材21bのクランクケース2への取り付け位置が溝部21b、21cの位置によって決定されるため、蓋部材22のクランクケース2への取り付け位置の位置決めが容易になる。
Claims (5)
- シリンダに設けられた掃気ポートとクランクケース内部に形成されたクランク室とを連通する掃気通路を備え、該掃気通路が前記シリンダとクランクケースとの締付面を貫通して形成されている2サイクルエンジンの掃気通路構造において、
前記クランクケース内部で、クランクケース内壁面に接触して取り付けられる蓋部材を有し、
前記クランクケース内壁面と前記蓋部材との接触面に前記クランク室とクランクケース上面に繋がる前記掃気通路の一部を構成する溝部を設けたことを特徴とする2サイクルエンジンの掃気通路構造。 - 前記溝部は、前記クランクケース内壁面に凹設されて設けられ、
前記蓋部材は、前記溝部の開放部を塞いで、前記クランクケース内壁面に接触して取り付けられていることを特徴とする請求項1記載の2サイクルエンジンの掃気通路構造。 - 前記溝部は、前記蓋部材に凹設されて設けられ、
前記蓋部材は、前記溝部の開放部を塞いで、前記クランクケース内壁面に接触して取り付けられていることを特徴とする請求項1記載の2サイクルエンジンの掃気通路構造。 - 前記溝部は、前記クランクケース内壁面と前記蓋部材の両方に、それぞれ凹設されて設けられ、
前記蓋部材は、前記クランクケース内壁面に設けた溝部と前記蓋部材に設けた溝部それぞれの開放部が対向するように、前記クランクケース内壁面に接触して取り付けられていることを特徴とする請求項1記載の2サイクルエンジンの掃気通路構造。 - 前記蓋部材は、前記クランクケースの対向する内壁面間に嵌合されて取付位置の位置決めがなされて、前記内壁面に取り付けられていることを特徴とする請求項1~4何れかに記載の2サイクルエンジンの掃気通路構造。
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JP2012512718A JP5337298B2 (ja) | 2010-04-27 | 2011-03-23 | 2サイクルエンジンの掃気通路構造 |
US13/581,896 US8800509B2 (en) | 2010-04-27 | 2011-03-23 | Scavenging passage structure for two-stroke engine |
EP11774732.9A EP2565434B1 (en) | 2010-04-27 | 2011-03-23 | Scavenging path structure for two-stroke engine |
KR1020127022735A KR101365287B1 (ko) | 2010-04-27 | 2011-03-23 | 2행정 사이클 엔진의 소기 통로 구조 |
CN201180011695.8A CN102792000B (zh) | 2010-04-27 | 2011-03-23 | 二冲程发动机的扫气通路构造 |
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EP3715599B1 (de) * | 2019-03-25 | 2022-02-23 | Andreas Stihl AG & Co. KG | Zweitaktmotor |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0431602B2 (ja) | 1987-07-31 | 1992-05-27 | ||
JP2002332846A (ja) * | 2001-05-08 | 2002-11-22 | Ishikawajima Shibaura Mach Co Ltd | 層状掃気2サイクルエンジン |
JP2007146770A (ja) * | 2005-11-29 | 2007-06-14 | Kawasaki Heavy Ind Ltd | 2サイクルエンジン |
JP2007285219A (ja) * | 2006-04-18 | 2007-11-01 | Zenoah:Kk | 2サイクルエンジン |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4294201A (en) | 1979-02-05 | 1981-10-13 | Swartz Robert V | Internal combustion engines |
JPS5872614A (ja) * | 1981-10-23 | 1983-04-30 | Nippon Clean Engine Res | 内燃機関の点火・燃焼方式 |
JPH0431602A (ja) | 1990-05-25 | 1992-02-03 | Toshiba Corp | 低圧内部車室ドレン排出穴の補修方法 |
DE4225369A1 (de) | 1992-07-31 | 1994-02-03 | Bosch Gmbh Robert | Gaswechselverfahren an Zweitaktbrennkraftmaschinen |
KR0152173B1 (ko) | 1992-10-29 | 1998-10-15 | 나까토미 히로타카 | 시클로헥사놀유도체 이것을 함유하는 냉감제 및 냉감성조성물 및 이 유도체의 제조방법 및 그 중간체 |
US5625427A (en) | 1993-12-15 | 1997-04-29 | Corning Incorporated | Ophthalmic lens |
JPH0988617A (ja) * | 1995-09-18 | 1997-03-31 | Yamaha Motor Co Ltd | 2サイクルエンジン |
US5524578A (en) * | 1995-09-29 | 1996-06-11 | Outboard Marine Corporation | Two-cycle engine having improved idle relief |
TW286289B (en) | 1996-02-16 | 1996-09-21 | Sheu Yih Lian | Manufacturing method for rollers utillized in sports goods and having multicolors |
JP3703924B2 (ja) * | 1996-11-22 | 2005-10-05 | 株式会社共立 | 2サイクル内燃エンジン |
US5992358A (en) * | 1997-03-17 | 1999-11-30 | Yamaha Hatsudoki Kabushiki Kaisha | Scavenge system for two cycle engines |
JP3583632B2 (ja) * | 1998-12-15 | 2004-11-04 | タナカ工業株式会社 | 2サイクルエンジン |
US6257179B1 (en) | 1999-04-28 | 2001-07-10 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
CN100507228C (zh) | 2003-09-25 | 2009-07-01 | 哈斯科瓦那股份公司 | 二冲程发动机 |
JP4573762B2 (ja) * | 2005-11-30 | 2010-11-04 | 本田技研工業株式会社 | 内燃機関の潤滑装置 |
JP5024230B2 (ja) | 2008-08-12 | 2012-09-12 | 日立工機株式会社 | 層状掃気2サイクルエンジン及び2サイクルエンジン工具 |
BRPI0918054B1 (pt) * | 2008-09-24 | 2020-11-10 | Makita Corporation | motor de dois tempos com depuração estratificada |
-
2011
- 2011-03-23 WO PCT/JP2011/056870 patent/WO2011135948A1/ja active Application Filing
- 2011-03-23 EP EP11774732.9A patent/EP2565434B1/en active Active
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0431602B2 (ja) | 1987-07-31 | 1992-05-27 | ||
JP2002332846A (ja) * | 2001-05-08 | 2002-11-22 | Ishikawajima Shibaura Mach Co Ltd | 層状掃気2サイクルエンジン |
JP2007146770A (ja) * | 2005-11-29 | 2007-06-14 | Kawasaki Heavy Ind Ltd | 2サイクルエンジン |
JP2007285219A (ja) * | 2006-04-18 | 2007-11-01 | Zenoah:Kk | 2サイクルエンジン |
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KR101365287B1 (ko) | 2014-02-19 |
TWI431192B (zh) | 2014-03-21 |
US8800509B2 (en) | 2014-08-12 |
JPWO2011135948A1 (ja) | 2013-07-18 |
EP2565434A4 (en) | 2015-02-11 |
EP2565434A1 (en) | 2013-03-06 |
CN102792000A (zh) | 2012-11-21 |
KR20120118057A (ko) | 2012-10-25 |
TW201207227A (en) | 2012-02-16 |
US20120325191A1 (en) | 2012-12-27 |
CN102792000B (zh) | 2014-11-26 |
JP5337298B2 (ja) | 2013-11-06 |
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