TWI324660B - Internal combustion engine for vehicle - Google Patents

Description

1324660 97/month 2 tampering (more) replacement page IX. Description of the Invention: The present invention relates to a vehicle internal combustion engine having a cylinder mounted in a manner having a substantially horizontal axis And an intake valve and an exhaust valve and two plugs mounted on a cylinder head. [Prior Art] In a related vehicle internal combustion engine, an air jacket (cooling air passage) is mounted on a cylinder head to mainly cool the periphery of the plug hole (for example, see Patent Document 1). [Patent Document 1] JP-A No. 2004-13 8053 However, in the case where each cylinder of the related internal combustion engine has a pair of spark plugs in order to achieve enhanced output and reduced fuel consumption by increasing combustion efficiency, it is necessary to fully consider The cooling capacity of the cylinder block determines the layout of the air jacket, intake and exhaust valves, and each plug. In view of the foregoing, an object of the present invention is to provide an internal combustion engine for a vehicle including a cylinder block mounted substantially horizontally, and an intake valve and an exhaust valve mounted on a cylinder head and Two plugs, and which exhibit an improved cooling effect by a gas jacket mounted on the cylinder head. SUMMARY OF THE INVENTION In order to solve the above objects and advantages, the present invention uses the following method. That is, there is provided a vehicle internal combustion engine according to the present invention, wherein a cylinder block (for example, the cylinder blocks 22 and 122 in the case of the embodiment) has a cylinder head (for example, the cylinder head in the exemplary embodiment) 24 and 124), the cylinder head attachment 117697-990122.doc 324660 leap/day repair (more) positive replacement page has two plugs (for example, plugs 64 and 65 in the exemplary embodiment) and has - A valve (eg, intake valve 49 in the illustrative embodiment) and an exhaust valve (eg, exhaust valve 5〇 in the exemplary embodiment), one of which is used to cool the plug hole (eg, an exemplary implementation) An air jacket (for example, a gas jacket 69 in the exemplary embodiment) around the plug holes 66 and 67) is mounted on the cylinder head; the air jacket has a self-driving air inlet (for example, exemplary The traveling wind introduction port 75) in the embodiment starts and leads to an L-shaped main passage of an exhaust vent (for example, one of the vents in the exemplary embodiment); and, respectively, the one of the plugs is close to The wind is introduced into the air inlet, and the other plug is installed close to the air outlet. Preferably, the exhaust valve of the cylinder head is installed side by side with the traveling air introduction port. Preferably, the vehicle internal combustion engine further has: an air deflector (for example, the first air deflector 78 in the exemplary embodiment) integrated with the cylinder head for guiding the traveling wind into the traveling wind introduction port . Preferably, the air outlet of the air jacket opens into a portion of the side of the cylinder head. Preferably, a flap (e.g., central flap 77 in the exemplary embodiment) is mounted adjacent one of the central portions of the gas jacket. Preferably, the exhaust vent is a main culvert of 0. η 罟 exhaust, and the vehicle internal combustion engine has a secondary vent adjacent to the intake valve (example >, the second row in the exemplary embodiment Tuyere 76a) »

Preferably, the cylinder block is mounted with its axis-correcting N-axis (e.g., axis C in the illustrative embodiment) generally parallel to the ground. According to the present invention, two plugs can have a squatter on the first cylinder head, and the circumference of the two plug holes and a smoldering to the outer wall can be a single gas sleeve 117697-990122 .doc

In order to effectively cool down the side-by-side installation of the siphon m exhaust valve and the driving wind-driven population, the opening area of the driving wind introduction port can be enlarged, and the air intake can be further improved by introducing a gas jacket = a large amount of driving wind. The cooling of the plug and the gas cap is made into 2 red caps and - the wind deflector of the driving wind is formed in a body-like manner, and the month can be introduced by the wind to the wind. The mouth is used to improve the cooling efficiency, and when it is refilled, a is cast by aluminum and its similar cylinder head and the air deflector are integrated to extinguish the small square... The number of parts to be used, resulting in a reduction in the cost of production. In the case where one of the air outlets of the air jacket opens toward the side of the gas red cover, the hot air from the air outlet does not fill the vehicle body, but is discharged outside the vehicle. In the case where the airfoil is installed at the position of the central portion of the sin near the air jacket, the driving wind can be guided to the airfoil, thereby effectively passing the L-shaped internal work chamber of the air jacket 'two plugs and cylinders The cooling effect on the cover is further improved.忖Μ The gas surrounding the intake valve can also be cooled in the case where the exhaust vent is a main sergeant window η η from ± to be exhausted and the vehicle internal combustion engine further has - adjacent to the secondary vent of the intake valve. The surplus is installed in the cylinder block with the axis being substantially parallel to the ground; "lower's air-cooled internal combustion engine--the air-sleeve can be filled with the air to improve Cooling efficiency. [Embodiment] A preferred embodiment of the present invention will now be explained with reference to the accompanying drawings. Unless otherwise 117697-990I22.doc -9- 丄 is 4660 ··················································· The same direction. In addition,

In the figure ten, respectively, the arrow FR captures the front side of the vehicle; the arrow + strikes ± L

4t j^LH means not the left hand side of the vehicle; and the arrow UP does not lie on the upper side of the vehicle. In the machine bicycle (vehicle) shown in Fig. 可, the front teeth 5 on the left and right sides of the wheel 4 are pivotally mounted on the vehicle body in such a manner that they can be controlled via the steering rod 6 The top tube 3 on the front end portion of the frame 2 is attached to the upper portion of the steering rod 6. The body frame 2 is of a so-called backbone type having an oblique extension from the lower rear side of the top tube (four). The main pipe 8, and the space between the jacking pipe 3 and the seat for making it easy for the passenger to ride on the upper side. The left and right insert plates (7) are engaged with the main pipe 8 ^ rear end portion, and the rear wheel u is supported by the wire shaft. The rocker arm _ front end portion is pivotally pivoted to each of the left and right pivot plates 1 。. The rear portion of the main pipe 8 is engaged with the front end portions of the left and right seat frames 13 extending obliquely toward the upper rear side, and left And the right rear cushions are respectively installed between the front and rear central portions of the left and right seat frames 13 and the rear heel portions of the left and right arms of the rocker arm 12. Seats for the driver and the rear seat passengers to ride 9 Mounted on the upper side of the left and right seat frames 13. In addition, reference numeral 15 indicates the driver The pedal, and reference numeral 16 indicates the pedal of the rear seat passenger. An engine (internal combustion engine) for the mechanical bicycle 1 as a prime mover 2 is worn on the inside (lower inner) of the lower central portion of the body frame 2. The engine 2 is an air-cooled single-cylinder engine with a crankshaft along the vehicle width direction (left and right directions) and includes a front end portion of the crankcase 21 protruding to the cylinder block 22 at the front of the vehicle. The engine 20 is mounted on On the body frame 2, and the crankcase 21 is 117697-990122.doc -10- 1324660

??year/month; repair) is replacing page I

The top and bottom of the rear side are supported on the left and right pivot plates 10 and the upper portion of the crankcase 21 is supported by the engine hanger 8a on the central portion before and after the main pipe 8. For the cylinder head 24 at the end (front end) of the cylinder 22, the downstream side of the throttle valve body 26 is connected to the upper side of the cylinder head 24, and at the same time, one of the base ends of one exhaust pipe 27' is connected to the cylinder head. 24 under the side. And one of the throttle bodies 26 is upstream connected to an air cleaner case 26a which is supported on the lower front portion of the main pipe 8. Referring to Fig. 2, the end of the exhaust pipe 27 is bent from the lower portion of the cylinder head and extends to the front such that the lower left side of the cylinder block 22 extends almost obliquely parallel thereto. Subsequently, the exhaust pipe 27 is bent from the lower portion of the crankcase 21 toward the center near the vehicle width direction, and finally connected to the front end portion (base end portion) of the muffler 27a 'the muffler 27 & is located after the engine 20 At the office. A catalytic converter 28 having an exhaust gas purifying function (hereinafter sometimes simply referred to as a catalyst) is mounted on the left-hand side from the exhaust pipe 27 to the cylinder block 22 by tilting downward φ (for reference, see Fig. 5) ^Muffler 27a The base end portion between the rear end of the engine 20 and the front end of the rear wheel u extends further or further in the right hand direction than the rear wheel U, and then extends toward the rear portion such that it is in the extension and the rear wheel u partially overlaps (if viewed from the side) 'by forming a substantially L shape (if viewed from the top). - the torque from the engine 20 is output via a clutch and the actuator 31 housed in the crankcase 21 (described with reference to Figure 4) to the drive sprocket 32 on the left hand side of the portion behind the crankcase n, and The drive sprocket 34 on the left-hand side of the rear wheel η is transmitted from the drive sprocket 32 via the active link 。. 117697-990122.doc 1324660

The front portion of the body frame 2, the gas red body 22 of the engine 20, the throttle body 26, the air cleaner case 26a and the like are covered with a front exterior cover 35 made of a synthetic resin material. The front outer cover 35 also serves as a leg sill for protecting the driver's legs from the strong wind pressure in the front region. Similarly, the rear portion of the body frame 2 is also covered with a rear outer cover 36 made of a synthetic resin material: a left outer cover, together with left and right seat frames 13 - a support # seat 9. Inside the portion of the rear portion of the frame (4), there is a glove box 37 mounted under the seat 9. Further, a fuel tank 38 supported on the front portion of the left and right seat frames 13 is attached to the lower front side of one of the glove boxes 37. As shown in Fig. 3, the cylinder block 22 of the engine 20 has an axis c substantially parallel to the ground (specifically, the front portion is slightly upward), and the self-curvature = front end portion of the axle box 21 forward (travel of the vehicle) Direction)). Further, the cylinder block 22 is attached to the crank case as one of the main members. The cylinder main body 23 of the front end portion, the cylinder head 24 attached to the front end portion of the cylinder main body 23, and a top cover attached to the front end portion of the cylinder head 24 are provided. In the following description, the forward and reverse directions parallel to the axis 〇 (cylinder axis) in the cylinder block 22 will be used interchangeably with the forward and reverse directions of the cylinder, and orthogonal to the axis C and The downward direction will be used interchangeably with the upward and downward directions of the cylinder. Referring to Fig. 4, the inside of the cylinder main body 23 has a cylinder inner diameter 39 formed along the axis c, and a piston 40 is reciprocally fitted in the cylinder inner diameter 90. A small end portion of one of the connecting rods 41 is rockably coupled to the piston 40 via piston pins in the left and right directions, and a large end portion of one of the connecting rods 41 is via the left M7697-990J22.doc -12· 1324660 ____ 5W/month The repair (more) replacement page.. and the crank lock in the right direction are rotatably coupled to a crank shaft 42. The crankshaft 42' pivots the crank pin via left and right crank arms between the left and right axes in the lateral direction. The clutch - 29 is mounted coaxially on the right end portion of the crankshaft 42, and one of the crankshafts 42 is torqued (depending on its rotational speed) via the centrifugation

The slave singer 29 is transferred to the _th_gear gear 43<}the first drive gear μ is coaxially mounted on the right shaft portion of the crankshaft 42 and meshes with the first driven gear, the first driven gear 44 is mounted coaxially on the right shaft portion of a spindle 45 behind the crankshaft 42. The main shaft 45 is mounted behind the crankshaft 42 to be parallel to the left and right axles of the crankshaft 42. A plurality of disc clutches 3 are coaxially mounted on the right side of the main shaft 45 to control or suppress a power transmission of a driver's operation and input to the first via a multi-disc clutch 3 The torque of a driven gear 44 is transmitted to the main shaft 45. The main shaft 45 and a countershaft mounted in parallel on the rear side thereof privately support a transmission gear set 47 (shown in Fig. 4 as a pair of transmission gears that mesh with each other). The main shaft 45 field shaft 46 and the transmission gear set 47 constitute the main structure of a transmission 31. Under the operation of the driver, the main shaft and countershafts 45 and 46 gradually change the gear ratio of one of the transmission gear sets 47 via a changing unit (not shown). The left end portion of the counter shaft 46 protrudes outside the crank axle box 21 and the drive sprocket "attaches" to the counter shaft 46. The cylinder head 24 together with the piston 40 disposed at the top dead center by closing the front end opening of one of the cylinder inner diameters 39 Forming a so-called single-slope roof-shaped combustion chamber. In the embodiment, the bow is a HC 2 valve, and an opening 49 on the side of the combustion chamber and an opening of an exhaust valve 50 are respectively formed. One of the combustion chambers 117697-990122.doc -13-do/month>>«repair, more) replacement page: each of the two inclined upper sides of the constituting portion 48 It is not opened or closed by the intake valve 51 and an exhaust valve 52. Each of the gas (10) and the exhaust (10) is used to connect the gas chamber: the throttle body installation on the upper portion of the milk red cover 24 The portion 53, or the passage of the exhaust gas mounting portion 54 of the gas chamber and the lower portion of the cylinder head 24, extends obliquely forward from the opening to the side opening to be substantially orthogonal to the inclined upper side 4 upward. Or downwardly f-curved until it reaches the throttle body mounting portion 53 or the exhaust pipe mounting portion 54. Throttle valve body mounting portion 53 and the exhaust pipe mounting portion 54 form a plane almost orthogonal to the upward and downward directions of the cylinder, and when one of the insulator or the exhaust pipe of the throttle body 26 is in contact with the flange for planar contact connection. One of each of the valves 51 and 52 extends obliquely forwardly orthogonally to the inclined upper side and passes through the inner walls of the intake valves 49 and 5G to thereby pass the front end portion of the intake rocker arm 55 or the exhaust rocker arm 66. Inserted into its front end. The other end portions of the rocker arms 55 and 56 are slidably contacted at two cam portions formed on a single camshaft %, respectively, and each of the valves 51 and 52 driven by the cam shaft 57 reciprocates along the rod thereof to Thereby, the opening on the side of the combustion chamber at ports 49 and 5 is opened and closed. The rods of the valves 51 and 52, the rocker arms 55 and 56, the cam shaft 57 and the like are supported on the inner side of the front portion of the cylinder head 24, and are housed in a valve system chamber 'the valve system chamber is preceded by the cylinder head 24 A portion and a cup-shaped top cover 25 for closure are formed. A driven sprocket 58 is coaxially fixed to the left end portion of the cam shaft 57, and an annular cam chain 60 is wound around the driven sprocket 58 and the drive sprocket 59. The 117697-990122.doc -14· active The sprocket 59 is coaxially fixed to the left end portion of the crankshaft 42. Thus, the cam shaft 57 rotates in engagement with the crank shaft 42 in the same direction to open and close the valves 51 and 52. Further, a generator (not shown) is coaxially mounted on the left end portion of the crankshaft 42. Referring to Fig. 5, a plurality of cooling fins 6U and 61b are integrally formed on the periphery of the cylinder block. In detail, the plurality of lateral cooling fins 6ia are disposed at substantially right angles to the cylinder axis c on the right side of the cylinder main body 23 and the cylinder head 24, and the plurality of longitudinal cooling fins 61a and the cylinder main body 23 are upward and downward. . The upper cylinder axis C is arranged substantially in parallel. The cam chain chamber 62 of the one-nano cam chain 60 is formed inside the left-hand side of the cylinder block 22. The cam chain chamber 62 acts not only as a return passage for the oil from the cylinder head 24 to enter the crankcase, but also serves as its detecting unit. To this end, the cam link to 62 includes an oil temperature debt sensor for detecting the temperature of the oil. The oil temperature 63 may be disposed on the left side of the lower portion of the cylinder main body 23, or near the crank axle housing 21 (see Fig. 8 for reference), so as to be insertedly engaged from the left side of the cylinder main body n. Further, reference numeral 60a in the drawings indicates a cam chain tensioner that supplies a finger tension to the cam chain 60. Further, the catalyst cartridge is placed at a lower portion of the cam chain chamber 62 (on the left side inclined downward from the cylinder block 22). Referring broadly to FIG. 6, by suppressing the left-to-right width, the cam chain chamber 62 is an integral inner wall portion 62a of the inner wall of the gas body 23 and the left side of the gas red cap 24, and the inner wall of the _ + ggg μ helium gas is An outer wall portion 62b having a U-shaped 1 yellow cross section surrounds the 1; the cross-section surrounds an outer portion of the upper inner wall portion 73 which is connected from the inner wall °P knife 62 & The cooling fins are not 117697-990122.doc 1324660. The year/month repair (more) replacement page is provided to the outer wall portion 62b of the cam chain chamber 62 (the left side of the cylinder block 22) because the combustion heat from the cylinder inner diameter 39 is not directly It is delivered to the outer wall portion 62b. As depicted in Figures 6 and 7, engine 20 has a pair of spark plugs to achieve an increased output and reduced fuel consumption by increasing fuel consumption performance. A first spark plug 64 is attached obliquely from the lower portion of the front portion to the lower portion of the cylinder head 24, and a second spark plug 65 is attached to the left side of the cylinder head 24 obliquely from the front right side. To this end, a first plug hole 66 and a second plug hole 67 are drilled into the lower portion and the left side of the cylinder head 24, respectively, so that each plug and "into the roof portion 48. In detail, plugs 64 and 65 By means of its corresponding plug holes 6 6 and 6 7 , it is screwed into the internally threaded hole formed in the roof forming portion 48 and fixed to the cylinder head 24 while the front end electrode unit is located in the combustion chamber. Viewed axially (indicated by the arrow relative to the cylinder axis C), the first plug 64 is disposed obliquely with respect to the longitudinal direction of the cylinder in a plane substantially orthogonal to the transverse direction, and its central axis is substantially parallel to the intake valve And the direction in which the exhaust valve 50 extends (substantially parallel to the longitudinal direction). Meanwhile, if viewed from the direction of the cylinder, the second plug 65 is obliquely disposed with respect to a lateral direction in a plane substantially orthogonal to the longitudinal direction of the cylinder, and The central axis thereof is substantially orthogonal to the direction in which the intake valve 49 and the exhaust valve 50 extend (substantially parallel to the lateral direction). In other words, if viewed from the cylinder axis direction, each of the plugs and "forms a substantially L-shape. . The first plug 64 is disposed offset such that its central axis is disposed further to the left than the cylinder axis C, and the second plug 65 is disposed offset such that its central axis is placed higher than the cylinder axis c The valve 49 has a portion formed on the upper portion of the roof constituting portion 48 or a shape 117697-990122.doc -16-do/month 9 repair (more) positive replacement page. :: more on the left side than the cylinder axis C The combustion chamber side is open, and from the combustion: the side opening extends almost upward (specifically, a little to the right) straight" to the throttle body mounting portion 53 located directly above the cylinder axis C at 8:7" The exhaust valve 5G has a combustion chamber side opening formed at a lower portion of the roof forming portion 48 or formed at a position closer to the right side than the cylinder axis c, and the fire is opened to the side opening almost downward (specifically, to the right side) Tilt 2 a little) until it reaches the exhaust pipe located at the right side of the cylinder axis C. P knife 54. Because the exhaust pipe mounting portion 54 is offset on the right cymbal, it is used for dismantling Dividing or attaching the working space of the first plug 64. The exhaust valve 50 has - capable of being based on exhaust gas The oxygen concentration is used to set an exhaust gas sensor (oxygen concentration sensor) that absorbs the target air-fuel ratio of the air. The exhaust gas sensor 68 uses a gate (catalyst) made of platinum and is detected by the unit. The arrangement is placed inside the exhaust valve 50 of the cylinder head 24. Thus, the gate is easily heated to a specified operating temperature, and the detection sensitivity is increased during the heating operation (during cold operation). The right side is fitted to the right side of the lower portion of the cylinder head 24 (the right side of the exhaust valve 50). The exhaust gas sensor 68 and the first plug 64 (left side) are disposed on opposite sides of each other with respect to the exhaust valve 50 on the cylinder head 24. Upper, and the second plug 65 is disposed on the same side (right side) as the exhaust gas sensor 68. Further, the exhaust gas sensor 68 is located away from the central axis C in such a manner that its center draw line is substantially parallel to the lateral direction. Further, that is, 'the exhaust gas sensor 68 is substantially at right angles to the first plug 64 when viewed from the axial direction of the cylinder, but is substantially parallel to the second plug 65. In order to effectively cool the gas subjected to a large heat load Red cover 24 (Special 117697-990122.doc

Plug and the perimeter of 67) Engine 2. There is a gas jacket (cooling air passage), the air jacket 69 can make the cylinder head 2 a portion of the cooling air (flowing wind) ring. The air jacket 69 feeds the communication between the plug hole 66 and the plug hole 67. = the roof portion 48 on the rear side and the space below the system room 曰 $ space, thereby omitting - the intake valve constituting portion 71 and the constituting portion 72, the cam inner chamber portion - the upper inner wall portion & : the locking bolt is inserted through the portion 74, and the crankcase 21 and the second air jacket 69 allow the cooling air (the traveling wind) to smoothly pass through the plug holes 66 and 67, and cool the air (driving) The wind) was even introduced, and the cylinder head was 24, so the cooling efficiency of the lid was improved. The air jacket 69 was built in the following manner, with two air deflectors 78 and 79 (will:: rear) The operation of the description), the periphery of the taxi hole 66 which is opened downward from the lower portion of the cylinder head 24 is used as the traveling wind guide population 75, and the second plug hole 67 which is open from the side of the gas red cover 24 in the right-hand direction. The periphery is used as a driving wind (hereinafter (4) - main exhaust vent) 76. In other words, if viewed from the cylinder axis two directions Then, the main passage of the traveling wind in the air jacket 69 is bent into a substantially l-shaped shape starting from the wind introduction port 75 and leading to the main exhaust port ^. Further, the 'secondary exhaust port 76a is mounted on the upper portion of the cylinder head 24. The intake valve': is located at both sides of the knife 71 so as to discharge upward part of the traveling wind from the traveling air introduction port 75. The flow of the wind inside the air jacket 69 is indicated by a broken arrow in Fig. 6. The lamp, the wind introduction port 75 (the first plug hole 66) is formed between the exhaust valve constituting portion 72 and the lock bolt insertion passage portion 74 on the lower left side, and the main exhaust port 76 (second guest: 丨, one The base hole δ7) is formed on the upper right side of the locking bolt insertion 117697-990122.doc -18- listening year/month p曰 repair (Chu) positive replacement page = part f 74 and the lower right side of the locking bolt inserted through Between the portions 74. The right is viewed from the cylinder axis direction, the width of the traveling wind introduction port 75 is relatively narrow compared to the main exhaust air 76, and the first plug 64 is formed to be able to be inserted into the exhaust valve 冓 into the P blade 72 and The locking bolt is inserted through the part for 7 minutes. The exhaust valve is composed of 72 (exhaust valve 50) and the name of the dam is 7A 7 J仃The inlet 75 and the first plug 64 are arranged side by side substantially laterally on the cylinder head 24, and the first plug 64 and the traveling air introduction port 75 are disposed in the exhaust gas sensor 68 with respect to the exhaust valve forming portion 72 (exhaust valve 5). On the opposite side, in the air jacket 69. If there is a central fin 77 transversely transverse to the cylinder axis c, viewed from the cylinder axis direction, the central vane 77 has a longitudinal wall placed on the air jacket 69. In detail, the center flap 77 is disposed between the central portion of the L-shaped air jacket 69 and the intake valve forming portion 71 and the exhaust valve forming the rasp 72, and the left end portion thereof is inclined downward (toward the traveling) Wind introduction port 75 side). With this central flap 77, the hurricane introduced into the air jacket 69 from the moving wind introduction port is smoothly guided to the main exhaust vent % while increasing its contact area 'and divided to pass through the plugs 64 and 65, respectively. The periphery, resulting in an improvement in the cooling efficiency on the gas cap 24. As illustrated in Figures 8 and 9, a first air deflector 78 is mounted on the lower portion (road side) of the cylinder head 24 to guide the traveling wind (indicated by a dashed arrow in Fig. 8) to the air jacket 69. The traveling wind introduction port 75 (the first plug hole 66). The first air deflector 78 is separated from the traveling air introduction port 75 by a pair of flat-shaped main bodies 78a' substantially parallel to the lateral direction and a pair corresponding to the two end portions of the branch and the wind deflector main body 78& The foot 78b is constructed. If viewed from the direction of the gas red axis, the first air deflector 78 forms an upwardly open substantially U-shaped longitudinal row 117697-990122.doc • 19-1324660 57 years/month > $曰修(more) positive replacement page= Wind path. The rear side of the body core is inclined upward so that the wind traveling along the passage flow portion is guided upward toward the (four) wind. The first t-window 78 is, for example, molded into the lower portion of the cylinder head 24 by in-situ molding. In the rear portion (downstream side) of the first air deflector 78, there is an oil temperature sensor 'and a downward facing wall called the wind screen standing upright in front of the oil temperature sensor 63. The supporting wall 8 has a plate shape which is formed at a right angle and is integrated into the lower portion of the cylinder head ^ by, for example, a bonding die. The stop wall 8〇 also reduces unnecessary contact between the oil temperature sensor 63 and an obstacle from the surface of the road. At the same time, the second air deflector 79 is mounted on the lower portion (road side) of the top cover (four) to guide the hurricane into the first air deflector 78. The second air deflector 79 is composed of a flat-shaped main body 79a which is separated downward from a lower portion of the top cover 25, substantially parallel to the lateral direction, and a pair of legs for supporting the two end portions of the wind deflector main body. . If viewed from the direction of the axis of the gas, the second type travels longitudinally in the wind path. The end of the second air deflector 79 is placed near the front end of the top cover 25. Its main task is to maintain a hurricane that has contacted the front end of the top cymbal 25 and then carry it to the rear portion and eventually into the first wind deflector 79. The second air deflector 79 is integrated into the lower portion of the top cover 25 by, for example, die casting. As illustrated in Figures 3 and 5, the catalyst converter is constructed by accommodating a honeycomb structure (individually) having an attached catalyst (such as '#) in a cylindrical tank. The diameter of the exhaust pipe 27. At the offset position on the lower left side of the inclined portion of the gas rainbow body 22, the catalyst converter ^117697-990122.doc •20·10,000 years/month ΈΪ修(more) is replacing the page: · aged and partially exhausted The tube 27 is mounted coaxially. Thus, when the catalyst 28 is heated to a predetermined temperature for accelerating the reaction, exhaust gas from one of the engines 2 is sufficiently purified as it passes through the catalytic converter 28. The catalyst 28 is placed obliquely on the left side from the lower portion of the cylinder block 22, i.e., under the cam chain chamber 62, so that heat from the hot catalyst 28 is not directly transferred to the inner wall of the cylinder. • Further, since the catalyst 28 is disposed offset on the left side of the traveling air introduction port 75 of the air jacket 69, the heat of the catalyst 28 is less likely to intrude into the air jacket. ^ As explained so far, the engine 2 of this embodiment. The cylinder block 22 is mounted with its axis C substantially parallel to the ground; the first plug 64 and the first plug 65 are mounted above the cylinder head, and the cylinder head has an intake air in the corresponding cylinder block 22. a door 49 and an exhaust valve 5; a gas jacket 69 is mounted on the gas red cap 24 for cooling the periphery of each of the plug holes 66 and 67, wherein the corresponding air jacket 69 has a self-winding introduction port 75 The L-shaped main passage leading to the main exhaust vent 76; and 'respectively, the first plug is mounted on the traveling wind/introduction port 75 and the second plug 65 is mounted on the main exhaust vent 76. - According to the above structure, the two plugs 64 and 65 can be efficiently mounted to the single cylinder head 24: and at the same time, the periphery of the two plug holes 66, 67 and the outer wall of the combustion chamber can be cooled very efficiently by a single air jacket 69. . / In addition, in the H-generator 2G, the exhaust valve 5' of the cylinder head 24 is installed side by side and the 'sliding door population 75' is made such that the exhaust valve 5 () can be sufficiently cooled by the traveling wind introduced into the air jacket 69. The cooling efficiency in the cylinder block 22 is further improved. Further, in the engine 2G, the cylinder head 24 and the first wind deflector 78 for guiding the traveling wind toward the traveling wind introduction port 75 are formed in a unitary manner so that 117697-990122.doc -21 -?year/month >:^Repair (more) the replacement page improves the cooling efficiency by appropriately guiding the traveling wind to the row 21, the driving inlet 75, and at the same time, through the aluminum casting and the 1 turn of the gossip The integration of the cylinder head 24 with the first air deflector 75 reduces the number of parts to be used, resulting in a cost reduction with respect to the product. In addition, in the engine 20, the air outlets of the air jackets, and the main air outlets 76 of the Fen 9 are opened toward the side of the cylinder head 24, so that the hot air from the water outlet vent 76 does not fill the vehicle body, but is discharged outside the engine. At 20, the 'central flap 77 is mounted at a position near the central portion of the air jacket μ' so that the hurricane can be guided to the center flap 77 and more efficiently through the L-shaped inner door of the air jacket 69. The second room 'further improves the cooling efficiency of the two plugs 64, 65 and the cylinder head 24. A second embodiment of the present invention will now be explained with reference to Figs. Compared with the engine of the first embodiment, the engine of the present embodiment (the main difference of the inner boring machine is that the exhaust valve 50 extends obliquely toward the upper right side as viewed from the direction of the gas red axis. The components of the same embodiment are denoted by the same reference numerals 'and thus the explanation of the components will be omitted hereinafter. In one cylinder head 124 of a cylinder block 122, the exhaust valve 5 has a roof formed a lower portion of the portion 48 is formed on the combustion chamber side opening at a right side of the cylinder axis C, and is inclined downward from the combustion chamber side opening to the right side, and obliquely extends to the lower right side until it reaches an exhaust gas The pipe mounting portion 54 is opened obliquely toward the lower right side even from the right side of the cylinder axis C. Thus, a relatively large lateral width for the traveling wind introduction port 75 is ensured, which is a traveling wind Introducing port 75 117697-990122.doc •22·βyear/month repair (more) replacement page • Can also be used as a work space for splitting or attaching a first plug 64, and inside the gas jacket 69 • < pure wind Increased flow, thereby Cooling efficiency on the good cylinder head 24. Right (for example) viewed from the cylinder axis direction, an exhaust gas sensor 安装 is mounted on the exhaust valve 50' in such a manner that it is almost at right angles to the direction in which the row of apertures 5〇 extend. Or inserted obliquely from the upper right side. Further, as in the first real exhaust gas sensor 68, its central axis may be substantially parallel to the lateral direction, and the wearer may be installed. In this case, the exhaust gas sensor 68 may be installed.

Cheng Zhongfu 0 41-X. liA • The sub-additional ease is just right adjacent to the gas red body 22. The present invention is not limited to the above embodiment, but may be a D〇hc engine having two camshafts for use in dike, 隹々rr, and exhaust, and the moon b is sufficient for the camshaft without using a shaker. The arm directly drives a valve of a direct push type engine with a plurality of intake valves and/or exhaust valves, a multi-cylinder bow engine or a water-cooled engine.

The invention has been described in terms of a number of embodiments, but such embodiments are only "not 14". Therefore, many alternatives and modifications will be apparent to those skilled in the art. The foregoing description is intended to be in the spirit of the scope of the appended claims and all such variations and variations including various vehicle accessories (such as scooters). According to the present invention, S plugs can be effectively installed in a single The gas is covered by the iris, and the periphery of the two plug holes and one of the two plug holes are burned to cool very effectively. U is preceded by a nipple. [Illustration of the drawings] FIG. 1 is a view of a first embodiment according to the present invention. The left hand of the bicycle U7697-990l22.doc -23- — The repair (more) replacement page side view Figure 2 is a top view of the display machine test. The engine and exhaust pipe layout of the motorcycle is shown in Figure 3 Right hand side view of the engine and exhaust camp s. Figure 4 is a cross-sectional view of the engine. Figure 5 is orthogonal to the engine. "Cross section of the axis of the axis of the cylinder body is orthogonal to the engine. + cross section of the wearing surface of the axis of the rolling cylinder 图 Figure 7 is corresponding to Figure 3 The phase of the right hand of the 丰4, 丨4, which explains the layout of the spark plug of the engine. Fig. 8 is an illustration, 1 in white, and the cylinder of the engine is viewed from the left hand side. Figure 9 is the gas red cover of the engine. Figure 10 is a cross-sectional view corresponding to the cross-section of Figure 6, illustrating a second embodiment of the present invention. Figure 11 is a right-handed Boeing 31 J 对应 corresponding to Figure 7. A side view showing the engine of this embodiment. [Explanation of main components] 1 Machine bicycle (vehicle) 20 ' 120 engine (internal combustion engine) 22, 122 Cylinder block 24, 124 Air cap 39 Air red inner diameter 48 Roof structure Section 117697-990122.doc •24· 1324660 y/month^a repair (more) replacement page 49 intake valve 50 exhaust valve 53 throttle body mounting portion 54 exhaust pipe mounting portion 61a cooling fin 62 cam Chain chamber 62b outer wall portion 64 first plug (plug) 65 second plug (plug) 66 first plug hole (plug hole) 67 second plug hole (plug hole) 68 exhaust gas sensor 69 gas sleeve 71 intake valve Part 72 Exhaust valve constituting portion 73 Upper inner wall portion 74 is passed 75 minutes traveling wind introducing port main exhaust port 76 (exhaust port) 77 central fin (fin) of the first air guide plate 78 (of the deflector) C axis-25-76a secondary air vents 117697-990122.doc

Claims (1)

1324660 lion / Yuecheng repair (10) for the mussel I I, the scope of application for patents: 1. A vehicle internal combustion engine 'one of them 褒 栌 人 人 r 、 、 、 、 、 、 、 包含 包含 包含 包含 包含 包含 包含 包含 包含 包含 包含 包含 包含 包含a cylinder head and a cylinder head of an exhaust valve, wherein the cylinder head is provided with a gas jacket for cooling the periphery of the plug hole, and the air sleeve has an L shape starting from a driving air introduction port and leading to a row of air outlets The main passage; and one of the plugs, such as the Hai, is installed near the wind inlet, and the other plug is installed near the exhaust vent. The cylinder head is provided with an air guiding plate, and the air guiding plate is formed to include a body 2 that is separated from the traveling air introduction opening and is substantially parallel to the lateral direction, and is configured to support the lateral ends of the air guiding plate body. a pair of feet; and if viewed from the cylinder axis direction, the wind deflector forms a generally U-shaped longitudinal traveling wind passage that opens upward. 2. The internal combustion engine for a vehicle according to Item 1, wherein the wind deflector body is inclined rearward. 3. The internal combustion engine for a vehicle according to claim 1 or 2, No, /7 v v v 4. A vehicle internal combustion engine, one of which has two plugs and has an intake valve and an exhaust valve. a cylinder head, a gas jacket around the hole; the inlet is installed, and the other one of the cylinder heads is provided with a cooling plug, and the one of the plugs is installed close to the exhaust air outlet; A series of bases are arranged side by side in the lateral direction and are arranged in the above-mentioned plugs and upper 117697-990122.doc year/month, and the daily repair (It) is replacing the page. An exhaust gas sensor is disposed on the opposite side of the exhaust valve. 5. A cylinder block for a vehicle includes a cylinder head to which two plugs are attached and has an intake valve and an exhaust valve, wherein the cylinder head is provided with an air jacket for cooling a periphery of the plug hole; One of the plugs is mounted adjacent to the travel air intake port, and the other plug is mounted adjacent to the exhaust vent; the exhaust valve and the travel wind inlet and one of the plugs are laterally Arranging side by side; an exhaust pipe extending below the 5x cylinder head is provided with a catalyst converter; and a cam is disposed on a side opposite to the one of the travel wind inlet and the plug The chain converter; The catalyst converter is provided to be offset from the traveling wind introduction port toward the cam chain chamber side. 6. A vehicle internal combustion engine, wherein the gas red body comprises a cylinder head to which two plugs are attached and has an intake valve and an exhaust valve, wherein the cylinder head is provided with a gas jacket for cooling the periphery of the plug hole, · 5 nautical plugs are installed close to the driving air inlet, and the other plug is installed close to the vent; ^The rest of the wind 51 population is formed in the exhaust valve component and the gas rainbow-side lower part The cylinder locking bolts are inserted between the passing portions, and the exhaust vents are formed between the upper portion of the cylinder and the lower portion of the cylinder locking bolt insertion passage portion. The vehicle internal combustion engine according to any one of items 1 to 6, 117697-990l22.doc 1324660, wherein the air outlet of the air jacket opens a 〇8 in a portion of the side of the cylinder head. A vehicle internal combustion engine according to any one of the preceding claims, wherein a fin is mounted adjacent to a central portion of the air jacket. 9. The vehicle internal combustion engine according to any one of claims 1 to 6, wherein the exhaust vent is a main vent; and the vehicular internal combustion engine further comprises a venting vent adjacent to the intake. 10. The vehicular internal combustion engine of any one of claims 1 to 6, wherein the cylinder system is mounted with its axis substantially parallel to the ground. 117697-990122.doc 1324660 Bamboo Year/Month" Day•More) Replacement Page I VII. Designation of Representative Representatives (1) The representative representative of the case is: (6). (2) A brief description of the component symbols of this representative map·· 20 engine (internal combustion engine) 22 3 cylinder block 24 cylinder block 39 cylinder inner diameter 48 roof component 49 intake valve 50 exhaust valve 53 throttle body mounting portion 54 exhaust pipe mounting portion 61a cooling fin 62 cam chain chamber 62b Outer wall portion 64 first plug (plug) 65 second plug (plug) 66 first plug hole (plug hole) 67 second plug hole (plug hole) 68 exhaust gas sensor 69 gas sleeve 71 intake valve block portion 72 row Valve constituting part 73 Upper inner wall part 117697-990122.doc 1324660 No year/month; ^Day repair (3⁄4疋 replacement page 74 Passing part 75 Traveling wind introduction port 76 Main exhaust vent (air vent) 76a Secondary vent 77 Central wing Sheet (sheet) 78 First air deflector (wind deflector) C Axis 8. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: (none) J17697-990122.doc