TW524764B - Engine for backbone type motorcycle - Google Patents

Abstract

In a backbone type motorcycle, space between the cylinder head and the backbone will be enlarged to thereby reduce the bending of the air intake system as far as possible with the aim of reducing the intake air resistance. In a motorcycle in which an engine main unit 20 of an engine E to be suspended from a backbone 2 inclining downward toward the rear from a head pipe 1 is constructed by a crankcase 21 for supporting a crankshaft 28; a cylinder block 22 which is arranged such that an axis Ab of a cylinder bore 22a inclines at a small gradient Α upwardly toward the front; and a cylinder head 23 to be connected to the front end of the cylinder block 22, and in which in space 66 between the cylinder head 23 and the backbone 2, there is disposed an air intake system 70, the cylinder block 22 is arranged such that the axis Ab of the cylinder bore 22a offsets S downward with respect to the axis Ac of the crankshaft 28.

Description

[Detailed description of the invention] [Technical field to which the invention belongs] The present invention relates to the support of the crank shaft M square protruding, the axis of the cylinder hole toward the tight C box, and from this crank box to the cylinder block; and, is joined to this cylinder The head of the car body frame is tilted up and arranged on the cylinder head of the car body frame, and the head of the cylinder is formed by J = J; in this way, the engine body of the engine is formed, and the engine is tilted and extended below the cylinder ^ The spine-type two-wheeled locomotive of the air intake system is equipped with an improvement of the engine by arranging the space between the rear surfaces. '' In particular, the two-wheeled locomotive [Known Technology] Such a two-wheeled locomotive is known, for example, in Gazette No. 249028. The word is not in Japanese Patent Laid-Open No. 2000- [Problems to be Solved by the Invention] i bone 1 = Avoid :: Mouth: The head tube tilts backwards and backwards, and the advantages of getting on and off the vehicle are also avoided ::::::! =, To make it easy for the driver to place the axis of the cylinder bore toward the front of the cylinder block = 出 e, so that the starter valve mechanism in the cylinder head can be pushed to the crank case side on the one hand, and on the other hand in the steam red head The space that can flow down naturally. It is possible to ensure that the intake system is set at a low fuel cost. Since the output force of the intake bow I engine is to be reduced as much as possible, it is required to expand the steam ridge II = and reduce the intake air f. The purpose of the present invention is to Provide unnecessary transformation == space.谀 The front of the axis of the eight cylinder bore

524764 V. Description of the invention (2) __ 2 degrees, that is, the engine can meet the above requirements. [Means for Solving the Problem] of the Moon Type Two-Wheeled Locomotive In order to achieve the above-mentioned object, the present invention is to support the crank; and since then, the crank case of the two-wheeled crank case of the cylinder bore is arranged obliquely. ; &Amp; is joined to the front of the main body upwards; this constitutes the engine main body of the engine suspended from the body frame of the car; the front of the J diagonally-extending spine, the second is inclined downwards between the rear The axis of the ridge two or two cylinder heads of the air intake system of the engine and the back cylinder bore are downwards to the axis of the crankshaft. * In a locomotive, according to the characteristics of item 1, the cylinder block and the cylinder block are also equipped with a cylinder block. . The oblique energy of the axis of the cylinder bore can hinder the expansion of the cylinder head and ridge. On the one hand, the 4 = handle box is displaced downwards. The bending and reduction of the air intake system in the space is reduced. When the engine's wheel output function and low fuel cost. Milk resistance, you can seek to increase the maximum pressure of the expansion of the cylinder bore axis to the crankshaft engine's expansion process, in order to reduce the force of gravity, The resistance of the piston to the friction of the piston, / ^ side thrust of the piston function. Τ, impedance can also seek to improve low fuel costs. In addition to the feature of the first aspect of the present invention, the camshaft ㈣㈣ steam for starting is in ^ = The cylinder head is equipped with the cylinder head, so it is the second feature.) According to the second feature, the steam red head becomes an opposite displacement, and the cylinder head handle can be enlarged. May be more space in the month, there can be more 524764 V. Description of the invention (3) _ Effectively seek to reduce the impedance of the g force. With the angle of the air intake system in this space and reduce the intake air, the invention reduces The Chu side of the crank box is more In addition to the feature of item 2 of the item, it is approximately on the crank sleeve before the crankshaft =; the moving motor is formed immediately above this-starter motor and the number of suspension wheels of the hanger. The spine is based on the characteristics of item 3 of this item, which is 4 and the third item. The motor moves with the * door that is relatively wide between the spines. On the one hand, the suspension hub is made of a crank case. The surface can be set on the crank. In addition, the front is less affected by the shadow of the engine's vibration; the weight of the engine = nearby locations, which can reduce the transmission of bone vibration, more = two. Therefore, the suspension hub can be reduced to the ridge. Comfort when riding. The input shaft and wheels of the speed machine are specially covered, so that the input shaft equipped with the crank case is arranged parallel to the self-crank shaft, and at the same time, its fourth feature The upper position of the shaft and the output shaft, so as to be special according to this item 4, to make the crank case small can shorten the distance between the crank shaft and the output shaft, and because of the aforementioned county ... Miniaturization. Therefore, with :: f occupying the crankshaft The position directly above the body must be offset from the upper position of the crank shaft and wheel output shaft of the input shaft: on the car: if it is out, you can go back to 2 crank box = part of the upper wall facing the upper part [implementation of the invention Form] /, the interference of the dog-out part and the suspension hub. The supervising embodiment of the present invention will be described below. On the H day, K is attached to illustrate the invention-

524764

Broadcast: Shows the first embodiment of the present invention, FIG. 1 is a side view of the spine type, and FIG. 2 is a view along the line of ": view, and FIG. 3 is a sectional view taken along line 3-3 of FIG. 2 FIG. 5 is a large diagram and FIG. 5 shows a second embodiment of the present invention, corresponding to FIG. 3 and FIG. The first embodiment of the present invention. In Figs. 1 and 3, the body frame F of the two-wheeled locomotive M is a head pipe 1 formed by welding; and the head pipe 1 is welded with a steel pipe spine 2 extending obliquely downward and extending downward; and, the rear end of the spine 2 is welded The rear frame is 3; On the foreman? A front fork 5 which is pivotally supported with a shaft front wheel 4 f. At the rear end of the rear frame 3, the middle frame 7 extending downward is welded, and the axles supporting the rear wheel 4f and the rear 6 are pivotally supported via the pivot 8. And then 6 and: to the back buffer 9. Further, on the rear frame 3, the storage box 10 and the fuel tank i 丨, which are mounted on the front and rear by Anmu = Valley helmets, are provided with an openable and closable seat portion 12 on the upper portion. A single-cylinder engine e is suspended from the spine 2. The engine e and the spine 2 are covered with a body cover 13 in common, and a front end portion of the body cover 13 is connected to a pair of leg stoppers 4 and 14 which protrude to the left and right outer sides. As shown in FIG. 2 to FIG. 4, in the single-cylinder engine e, the engine body 20 is composed of a 'crank box 2 1; and a cylinder block 2 2 protruding forward by this crank box 2 1; and' The cylinder head 2 3 which is joined by the front end of this cylinder block 2 2 is thus constituted. On the crank case 21, there is an upper suspension hub 24 on the upper surface, and a pair of upper and lower rear suspension hubs 25 and 25 are integrally formed on the rear surface.

524764

The suspension wheel hub 24 is provided with the spine 2 protruding downwards, the front part of the middle part, and the two rear parts of the suspension wheel valleys 25 and 25. The crankcase 21 is fixed by bolts on the middle frame 7, and the axis containing the spine 2 Straight face? Left: The left and right box halves 21a and 21b are composed of two boxes 21a and 21b, and the crank shaft 28 disposed in the horizontal direction is supported by a pair of left and right bearings 27 and 27. On this crankshaft 28, the vertical surface connected to the single cylinder hole 22a of the cylinder block 22 via the connection% 30 is located at the aforementioned vertical surface of the cylinder block 22 at the axis Ab of the cylinder hole 22a. Above p, it is arranged so as to incline with a small slope α that faces upward. In the cylinder head 23, a combustion chamber 31 adjacent to the top surface of the piston 29 is formed; and, the intake air connected to the combustion chamber 31 above the cylinder head 23 is opened; and, the combustion chamber 31 connected to the combustion chamber 31 is opened below the cylinder head 23; Exhaust port μ · Because of this, there is an intake and exhaust valve 34; 35 which can open and close the intake and exhaust ports 32 and 33. Further, the starter valve mechanism 36 for opening and closing the intake and exhaust valves 3 4, 35 is provided in the starter valve chamber 37 of the cylinder head 23. The starter valve 36 is a cylinder head 2 3 which is parallel to the crank shaft 2 8 in the middle of the intake and exhaust valves 34 and 35 and is supported by a pair of left and right bearings 3 9 and 3 9. 8; and 'the intake rocker arm 40 supported by the cylinder head 2 3 which is linked with the camshaft 3 8 and the intake valve 3 4; and, between the cam shaft 3 8 and the exhaust valve 35 The exhaust rocker arm 4 丨 supported by the linked cylinder heads 23 and 3; and the valve springs 4 2 and 4 3 which energize the respective closing directions of the intake and exhaust widths 3 4 and 3 5 are configured as described above.

524764 V. Description of the invention (6) "------ First, it is connected to the crank shaft 28 through the timing transmission 61. The second: the special movement device 61 is fixed to the driving sprocket 62 of the crank shaft 28 adjacent to the bearing side supporting the left side of the crank shaft 28; and the driven sprocket 63 fixed by the cam & And, constituted by two sprocket wheels 62 and 63, and an endless timing chain 64; which can be transmitted to the camshaft 38 by a reduction ratio of 1 / rotation of the crank shaft 28. The timing chain 64 is formed on the timing chain path 65 on a side wall of the cylinder block 22. The eight-cylinder block 22 is arranged so that the axis Ab of the cylinder hole 22a is offset from the axis AC of the crank shaft 28 only by a distance s downward, and the cylinder head 23 is arranged so that the axis Am of the camshaft 38 is only Offset to the distance S below the axis Ab of the cylinder hole 22a. By this two-stage deflection, the cylinder head 23 can maintain the inclined state of the cylinder hole 22a on the one hand, and can displace the crank case 21 1 on the other two steps, which can effectively expand the cylinder head 23 and the spine. 2 spaces 66. In Figs. 1 and 3 again, the intake system 70 of the engine E is arranged in the space 66. The intake pipe 71 constituting a part of this intake system 70 is connected to the communication inlet 32; the K cylinder head 23 is above. The air inlet pipe 71 extends upward from the cylinder head 23 and then bends forward along the lower surface of the spine 2, and its end, that is, the upstream end is connected to the side-ventilation gasifier 72. The filter 73 is connected to its air inlet. In this way, the intake system 70 is configured. Then, by disposing the air intake system 70, since the space between the cylinder head 23 and the spine 2 is expanded as described above, the curvature radius of the curved portion of the intake pipe 71 can be greatly set, and as a result, the radius of curvature can be reduced. The intake resistance in the intake pipe 71 increases the engine output, which can further improve the fuel economy.

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524764 V. Description of the invention (8) The vibration transmission ’can improve the comfort during riding. In 02 and FIG. 3, in the crank case 21, you are welcome to enter the shaft 86 and output ":; speed 9 95 is supported by the crank case 21. These input and output shafts 86 and 87 are constituted by a plurality of speed change gear trains 88i to 88η. The driving force of the crank is transmitted to the input shaft 86 through the clutch 89, the primary reduction gear train 90, and the variable speed clutch = 91, and then the input shaft 86 is transmitted to the output shaft 87 through a selected speed gear train. It is then transmitted to the rear wheels 4r via a chain transmission 92 arranged outside the crank case and driven. In the above-mentioned transmission 85, the output shaft 87 and the crank shaft 28 are disposed substantially on the same horizontal plane, and the input shaft 86 is disposed at an offset position above the crank shaft 28 and the wheel output shaft 87 to the two shafts 28, 87. Middle position. In addition, above the input shaft 86, a transmission cylinder 93 with selectable gear trains 88i to 88n is provided. In this way, the distance between the crank shaft 28 and the output shaft 87 can be shortened, and the crank case 21 can be miniaturized, further The miniaturization of the engine e can be achieved. In addition, since the front suspension hub 24 occupies a position substantially directly above the crank shaft 28, as the crank shaft 28 and the output shaft 87 of the wheel input shaft 86 are deviated, even if the input shaft 86 must be positively adjusted In the case where a part of the upper wall of the upper crank case 21 bulges upward, the interference between the bulged portion and the above-mentioned upper suspension hub 24 can also be avoided. Next, a second embodiment of the present invention shown in FIG. 5 will be described. This second embodiment is formed on the cylinder block 22 and the cylinder head 2 3 of the engine E.

524764 V. Description of the invention (9) Water jacket 96. Only the axis Ab of the cylinder bore 22a of the cylinder block 22 is offset from the axis Ac of the crank shaft 28 by a distance S downward. That is, the axis of the camshaft 38

Am is arranged on the axis Ab of the cylinder hole 22a. The upper suspension hub 24 is integrally formed on the upper wall of the cylinder block 22. In the intake system 70, instead of the gasifier 72 of the previous embodiment, a throttle body 172 may be provided. A fuel injection valve 7 capable of injecting fuel is installed in the intake pipe 71 toward the outlet of the intake port 32. 4. The input shaft 86 and the wheel output shaft 87 of the transmission 85 are arranged on the same level as the crank shaft 28. The other structures are substantially the same as those of the previous embodiment. In FIG. 5, parts corresponding to the previous embodiments are given the same reference numerals, and the descriptions are omitted as long as they do not depart from the gist of the present invention. The present invention is not limited to The above embodiments can be modified in various designs. [Effects of the invention] According to and, the head is inclined obliquely; for example, the tilting cylinder head of the special line of the extended space axis line and the steam cylinder configuration of the crank case as described above constitute the engine that is installed by the spine. Crankshaft sign, cylinder tilt, forward k-block between the spine; Suspension of the intake car from the engine to the block and steam 1 feature to support the crankcase of the crankshaft; protrusion, cylinder bore The axis of the cylinder is tilted forward and upward, and the cylinder connected to the front end of the cylinder block tilts the engine body downward from the head pipe of the car body frame. In the spine type two-wheeled locomotive interposed between the cylinder head and the aforementioned back surface, The cylinder block ^ is placed in an offset position below the cylinder block. According to the first cylinder head, the shaft that holds the cylinder hole can be displaced downward to the crank case, which can be enlarged and compressed. Therefore, it can be reduced in the space. On the other hand,

———---- V. Description of the invention (10) -_____ The air system bends and reduces the resistance of the intake air. However, the fuel cost is low ... The lead of the steam red hole: the power output of the wheel. The side thrust that acts on the deflection of the axis of the crankshaft reduces the piston's deflection. The force can reduce the piston and improve the fuel economy. According to the second embodiment of the present invention, the frictional resistance of the steam cylinder can be further shifted. According to the second aspect of the present invention, the steam red head = the axis is aligned with the axis of the steam rice hole, and the cylinder head can be enlarged: The stage is effective to reduce the space allocated in this moon, and it can have more resistance. According to the third feature of the present invention, the bending of the air intake system of 2 and 3 and the reduction of the intake air are: ^: The first or second feature is beyond the crank * on the front side of the crankshaft. The starter motor is mounted on the curved part, and the crank case and the spine are compared on the upper side of the crank case immediately above the suspension formed by the aforementioned spine hanger. The caster can be installed on the crank case. It can reduce the impact of the engine vibration _ 2 near the center of gravity of the engine to the vibration transmission of the spine by the hanging hub, and thus can reduce the aforementioned suspension feeling. In addition to improving the comfort during riding, according to the input of the fan-changing machine equipped with the fourth special crankcase of the present invention, in addition to the third feature, because it is configured, at the same time, it is turned into ==== The wheels of the wheels are positioned parallel to the crank shaft, which can shorten the distance between the sleeve and the wheel ψ, which is higher than the crank shaft and the output shaft.

\\ 312 \ 2d-code \ 91-02 \ 90130191.ptd Page 14 524764 V. Description of the invention (11) The miniaturization of the handle box can further reduce the size of the engine. In addition, since the suspension hub occupies a position directly above the crank shaft, as the upper side of the crank shaft and the output shaft of the input shaft are deviated, the upper wall of the crank case directly above the input shaft must be In the case of the part protruding upward, the interference of the protruding part and the aforementioned suspension hub can also be avoided. [Description of component number] 1 head tube 2 spine 3 rear frame 4f front wheel 4r rear wheel 5 front fork 6 rear fork 7 middle bracket 8 pivot 9 rear bumper 10 storage box 11 fuel tank 12 seat 13 body cover 14 Leg block 15 Front bracket 20 Engine body 21 Crank case

C: \ 2D-C0DE \ 91-02 \ 90130191.ptd Page 15 524764 V. Description of the invention (12) 21a Left side box half 21b Right side box half 22 Cylinder block 22a Cylinder hole 23 Cylinder head 24 Upper suspension hub 25 Rear suspension hub 26 Bolts 2Ί, 2Ί, bearing 28 Crankshaft 29 Piston 30 Connecting rod 31 Combustion chamber 32 Intake port 33 Exhaust port 34 Intake valve 35 Exhaust valve 36 Starter valve mechanism 37 Starter valve chamber 38 Camshaft 39 ^ 39, bearing 40 intake rocker 41 exhaust rocker 42, 43 valve spring 1 1 ΙΙΙίΕ C: \ 2D-C0DE \ 91-02 \ 90130191.ptd page 16 524764 V. Description of the invention (13) 61 Timing Transmission 62 Drive sprocket 63 Driven sprocket 64 Timed chain 65 Timed chain passage 66 Space 70 Intake system 71 Intake pipe 72 Vaporizer 73 Air filter 74 Material injection valve 75 Generator 76 Rotor 77 Starting gear 78 One-way clutch 79 Reduction gear train 80 Starter motor 81 Exhaust pipe 85 Transmission 86 Input shaft 87 Output shaft 88 i ~ 88η Variable speed gear train 89 Centrifugal clutch 90 deceleration gear

C: \ 2D-CODE \ 91-02 \ 90130191.ptd Page 17 524764 V. Description of the invention (14) 91 Speed change clutch 92 Chain transmission device 93 Speed change cylinder 94, 94 '~ 95 95, 96 Water jacket 172 is fluid F Body frame E Engine M Two-wheeled locomotive P Vertical planes S, S, Offset Ab The axis of the cylinder bore Ac The axis of the crankshaft Am The axis of the camshaft a Small gradient bearing

C: \ 2D-CQDE \ 91-02 \ 90130191.ptd Page 18 524764 Brief description of drawings Figure 1 shows a side view of a spine-type two-wheeled locomotive according to a first embodiment of the present invention. FIG. 2 is an enlarged top view of a longitudinal section of the engine taken along line 2-2 of FIG. 1. FIG. Fig. 3 is a sectional view taken along the line 3-3 in Fig. 2. Fig. 4 is a sectional view taken along the line 4-4 in Fig. 2. FIG. 5 shows a second embodiment of the present invention and is a cross-sectional view corresponding to FIG. 3.

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Claims (1)

524764 6. Scope of patent application 1. An engine of a spine type two-wheeled locomotive to support a crank case (21) of a crank shaft (28); and, from this, the crank case (2 1) protrudes forward, and the cylinder bore (2 2a) The cylinder block (2 2) arranged so that the axis line (Ab) is inclined upward and forward; and, the cylinder head joined to the front end of the cylinder block (2 2); The head body (1) of the body frame (F), the engine body (20) of the ridge ^ of the engine (E), which extends obliquely downwards and backwards, and the space (66) between the cylinder head (23) and the above-mentioned engine. ) In the 2% of the bone type of the intake system (70) equipped with the engine (E), which is characterized by the cylinder? The axis line (Ab) of the crankshaft (28) is offset from the axis line (Ac) of the crank shaft (28), and the cylinder block (22) is arranged in an offset position (S). 2. If the engine of the spine type two-wheeled locomotive according to item 丨 of the patent application scope, wherein the shaft of the camshaft (3 8) for the starter valve supported by the cylinder head (2 3), (Am) is the cylinder bore The axis (Ab) of (22a) is offset (s,) downward to arrange the cylinder head (2 3). For example, if the engine of a spine-type two-wheeled locomotive of item 1 or 2 of the patent application scope, the front-mounted dagger starter motor (80) is formed on the crank shaft (28) and the handle box (21). The suspension hub (24) of the aforementioned spine (2) is thus completed. Φ 4 · 1 t Γ The engine of the spine-type two-wheeled locomotive of the third item in the center of Lili is centered to be assembled in Qu Hong μ r ^ each of the eight output shafts (87) and the 7-speed transmission (85 The wheel man's shaft (86) and the shaft (86) are arranged in parallel with the curved shaft (28), and at the same time, the input of the shaft phase (28) and the output shaft (87) thus formed are above, Page 20