CN1143952C - Oil-pump device of internal combustion engine - Google Patents

Abstract

The invention is to provide an oil pump device for an internal combustion engine in which the fitting work or base plates is easy and also the working manhour of the fitting surfaces of the base plates can be reduced, and further by which the cooling efficiency of the internal combustion engine can be enhanced. In an internal combustion engine provided with an oil pump 140 in the crankcase on the opposite side of a belt-type continuously variable transmission 35, openings 130 of an area in such a degree that does not include the crankshaft 40 are formed on the oil pump 140 of the crankcase, and on the side parts in the vicinity thereof, and the openings 130 are covered with the base plates 131 of the oil pump 140 to constitute the oil pump 140.

Description

Oil-pump device of internal combustion engine

Technical field

Involved in the present invention is the oil pump device that disposes in the crankcase of the internal-combustion engine with Belt-type Adjustable-speed machine.

Background technique

In existing technology, on internal-combustion engine, equally with the Belt-type Adjustable-speed machine make the oil pump of live axle with bent axle with Belt-type Adjustable-speed machine, generally be configured in the crankcase of a relative side with the Belt-type Adjustable-speed machine.

The example of recording and narrating on the Japanese patent laid-open 4-81525 communique of this formation is shown in Fig. 7 to describe.

Fig. 7 is the right hand view that this 4 stroke IC engine 01 has saved alternator etc.Have in 4 stroke IC engines 01 by crankcase 02 cylinder block 03 that leans forward significantly, forwards highlights, connecting cylinder head 04 in its end.

Formed big round opening 05 on the side of right crankcase 02, the one-tenth substantially horizontal is disposed at the bent axle 05 in the crankcase 02 about including in this circle opening; Be formed with large-scale discoideus base plate 06 inaccessible firmly this circle opening 05 of the penetration hole that is passed by this bent axle 05, its outside is provided with alternator.

So just become outer structure by base plate 06 covering, built-in oil pump 08.Free rotary ground supporting the pump shaft 09 parallel with bent axle 05 below bent axle 05, the actuation gear 010 that is assemblied in bent axle 05 driven pump 08 work that is meshed with the driven gear 011 that is assemblied in pump shaft 09.

Work by this oil pump 08, to each local fuel feeding that needs, but the fuel feeding of valve actuation system in the middle of it is to be finished by the oil pipe 013 that extends out before the lower direction of cylinder block 03 by oil filter 012, and this oil pipe 013 its end connects cylinder head 04 and also is communicated with valve actuation chamber 014.

But, this great circle opening 05 that contains bent axle 05 that forms in crankcase 02 side by large-scale base plate 06 the structure of the built-in oil pump 08 of covering because base plate 06 is bigger, also on base plate 06, run through bent axle 05, so the dress of base plate 06, tear open all compare the difficulty, maintainability is bad.

In addition, owing to will cover big round opening 05 with large-scale base plate 06, circle opening 05 peripheral attachment face amount of finish is also big.

Also have, extend out and the flange of outside that is covered in the external rotor of alternator also can not fully form on its circumference because of the influence of large-scale base plate 06 from crankcase, blown by the cooling fan of the external rotor that is loaded on alternator and to decrease in the cooling of internal-combustion engine greatlyyer, the internal-combustion engine cooling effect is bad.

Summary of the invention

The present invention supervises in this, and its purpose is to make base plate that the oil-pump device of internal combustion engine of installing, reducing base plate attachment face amount of finish, provide the internal-combustion engine cooling effectiveness to be improved is provided.

For achieving the above object, the present invention is equipped with in the internal-combustion engine of oil pump in the crankcase of a relative side of Belt-type Adjustable-speed machine, the side part of the opening that passes at the bent axle of aforementioned crankcase is formed for installing the opening of oil pump, the base plate of oil pump is covered this opening and constitutes oil pump as lid, make the oil pump device of internal-combustion engine.

Because the oil pump in the crankcase of the opposite side of Belt-type Adjustable-speed machine and near the side part on formed and do not comprised the bent axle opening of the area of size like that, reduced than existing opening area, the base plate that covers this opening also reduces, and do not need to run through bent axle, so the base plate installation is extremely easy.

In addition, crankcase mouth diminishes, and the amount of finish of the attachment face that it is peripheral also reduces.

More be exactly, the flange of the outside of the external rotor of the covering alternator that extends out from crankcase can form influenced part than small circumference because of base plate diminishes, the cooling fan of having eliminated from the external rotor of being located at alternator blows toward the loss of the cooling air of internal-combustion engine, and the cooling effectiveness of internal-combustion engine might be improved.

Detect the pulse oscillator of the magnetic resistance (リ ラ Network one) on the external rotor of the alternator of being located at aforementioned crankshaft end, because of making the oil-pump device of internal combustion engine that the claim 1 that is based on the aforementioned base plate is recorded and narrated, owing to can fill up the part that the influence because of being subjected to base plate of said flange can not form to set pulse oscillator, utilized pulse oscillator that the cooling air loss is further reduced, the internal-combustion engine cooling effectiveness can be further enhanced.

Description of drawings

Fig. 1 is the motor-scooter type moped whole profile of one embodiment of the invention;

Fig. 2 is the II-II sectional drawing of Fig. 1 of this motor-scooter type moped internal-combustion engine

Fig. 3 is the III-III sectional drawing of Fig. 2;

Fig. 4 is the IV-IV sectional drawing of Fig. 3;

Fig. 5 is the right hand view that this internal-combustion engine takes off alternator and base plate;

Fig. 6 is the VI-VI sectional drawing of Fig. 5;

Fig. 7 is the right hand view that existing 4 stroke IC engines take off alternator etc.

Embodiment

Embodiment

Below borrow Fig. 1～Fig. 6 to be illustrated with regard to one embodiment of the invention.

Fig. 1 is motor-scooter type moped 1 the profile that the present invention's whole swing internal-combustion engine is housed.

Vehicular body front 2 links up with the base plate 4 of rear vehicle 3 by bottom, and the car body framework that constitutes body framing roughly by under manage 6 be responsible for 7 and constitute.

The following pipe that promptly extends out downwards from the steering head 5 of Vehicular body front 26 bends to level in the lower end, below by base plate 4 extends back, forming the pairing left and right person in charge 7 in its back-end links up mutually, and this person in charge 7 erects to oblique rear with linking department, and bends to level at the height of regulation and extend back.

Supporting fuel tank and container by this person in charge 7, its top disposes seat cushion 8.

In addition, on Vehicular body front 2, be provided with the handle 11 that is being propped up by steering head 5 pivots up, the below is extended with front fork, and axle is propping up front-wheel 13 in the lower end of front fork.

Be equipped with carriage 15 in the riser portions lower end of being responsible for 7, can freedom joltily link supporting by connecting rod 16 at this carriage 15 and wave assembly 17.

Waving on the assembly 17 single cylinder 4 stroke IC engines 3.So that cylinder block 32 is equipped on its front portion to the attitude that leans forward that slightly becomes level, the end of waving the suspension holdfast 18 that end forwards highlights under the part that is equivalent to crankcase of housing 31 from combination is linked to aforementioned link component 16 by pivot 19.

Constituted Belt-type Adjustable-speed machine 35 from this internal-combustion engine 30 toward rears, axle is propping up trailing wheel 21 on the reducing gear 38 that is provided with at its rear portion.

Between the upper end of this reducing gear 38 and the aforementioned person in charge's 7 upper end curved part, clamping posterior bumper 22.

On the top of waving assembly 17, disposing vaporizer 24 that is connected in the sucking pipe 23 that extends out from the top of the cylinder head 33 of internal-combustion engine 30 and the air-strainer 25 that is connected in this vaporizer 24.

On the other hand, wave on the prominent suspension holdfast of establishing 18 in housing 31 bottoms in combination, pivot is propping up master bracket 26, and is installing the cardinal extremity of the armshaft 28 that recoils at the recoil axle 27 that the transmission housing lid 36 from Belt-type Adjustable-speed machine 35 highlights; Be provided with recoil axle pedal 29 on the top of this recoil armshaft 28.

Vehicular body front 2 is covered with from front and back by front shroud 9a and back cover 9b, and left and right side is covered with by the preceding 9c of cover down; And the middle body of handle 11 is covered with by handle cover 9d.

Base plate 4 is covered with by side cover 9c, and rear vehicle 3 then is covered with from the left and right sides by end cover 10a and tail side cover 10b.

Fig. 2 will wave the sectional view that assembly 17 is decided what is right and what is wrong and launched along the II-II line of Fig. 1.

It is that housing 31L is made up on a left side separately and right combination housing 31R merges formation that housing 31 is waved in combination, right side combination housing 31R constitutes the car body of crankcase portion, and left side combination housing 31L then is made of the crankcase part 31a of front portion, middle drive shell body portion 31b, rear portion the decelerator body body portion 31c front and back along its length.

Left open face at left side combination housing 31L is covered with built-in Belt-type Adjustable-speed machine by transmission case cover 36; The right side open surface of rear reduction gear casing body 31c is covered with by reducer shell 37, built-in reducing gear 38.

In the so-called crankcase that 31a of crankcase portion and right combination housing 31R form, by left and right sides main bearing 41, but 41 free rotary ground supportings bent axle 40, and the right extension part in the extension part that its left and right horizontal direction extends out is provided with alternator 60; And the drive pulley 76 of cam chain driving sprocket wheel 55 and Belt-type Adjustable-speed machine 35 is being set on left extension part.

In the internal-combustion engine 30, the piston 42 that moves reciprocatingly in the cylinder barrel 44 of cylinder block 32 is coupled together by connecting rod 43 with the crankpin 40a of bent axle 40.

This 4 stroke IC engine 30, adopted OHC type valve system, in cowl hood 34, be provided with valve operation mechanism 50, in this valve operation mechanism 50, there is the cam chain 51 that carries out drive transmitting to be set up between camshaft 53 and the bent axle 40, set up cam chain chamber 52, this chamber is connected with the 31a of crankcase portion, cylinder block 32 and cylinder head 33 for this reason.

Promptly between the aforementioned driving sprocket wheel 55 that is being equipped with by movable sprocket 54 and on bent axle 40 that the left end of the camshaft 53 that points to the left and right horizontal direction is being equipped with, setting up the cam chain 51 in the break-through cam chain chamber 52.

On cylinder head 33, igniter plug 45 is housed from the firing chamber with cam chain chamber 52 relative side direction.

Valve operation mechanism 50 in cowl hood shown in Figure 3 34, owing to be in the big forward-lean state that makes the nearly level of cylinder, setting Aspirating valves 56 and outlet valve 57 up and down at camshaft 53, respectively can freedom on the pitman arm shaft 58,58 up and down joltily pivot propping up Rocker arm 59,59, rotation Rocker arm 59,59 by the cam of camshaft 53 shakes, and opens and closes at the moment Aspirating valves 56 and the outlet valve 57 of regulation.

Make up the alternator 60 of the right flank setting of housing 31R on the right side, on the end of the bent axle 30 that the central cylindrical part 31d from right side combination housing 31R highlights, installing external rotor 62 by alternator wheel hub 61, the side face edge is circumferentially disposing magnet 63 within it, and has the stator 64 that is twining stator coil 65 to be fixed on the central cylindrical part 31d in the inboard of magnet 63.

Right flank at external rotor 62 is installed with forced air-cooling fan 66, and the one side is covered with fan guard 67, is connected with this fan guard, also is provided with the big cover 68 of fan, around coating gas cylinder body 32 and cylinder head 33.

In addition, wave waving on the housing section 31a of housing 31 in combination, just separate with crankshaft room by main bearing 41 and formed aforementioned cam chain chamber 52, the left side wall of this cam chain chamber 52 still is the divider arms 71 of Belt-type Adjustable-speed unit room 70 and cam chain chamber 52, on this next door 71, formed circular penetration hole 71a, bent axle 40 runs through this large diameter flat circular penetration hole 71a cylindraceous, also be pressed into circular sealing component 72 in this penetration hole 71a, the hollow portion of this circular sealing component 72 is running through bent axle 40.

On the bent axle 40 between sealing member 72 and the main bearing 41, be equipped with aforementioned driving sprocket wheel 55, volume is hung aforementioned cam chain 51 on this driving sprocket wheel 55, by sealing component 72 Belt-type Adjustable-speed unit room 70 and cam chain chamber 52 watertights are separated, go in the Belt-type Adjustable-speed unit room 70 to prevent oil leakage.

On the bent axle 40 that extends out running through sealing component 72 drive pulley 76 can be set rotatably together.

Drive pulley 76 is made of fixed side half-pulley 77 and movable side half-pulley 78.Fixed side half-pulley 77 is fixed in the left part of bent axle 40 by wheel hub 79, and the movable side half-pulley 78 on its right side is fitted on the bent axle 40 in the chimeric mode of spline.This movable side half-pulley 78 together rotate with bent axle 40, face and can slide vertically with fixed side half-pulley 77 join from, 77,78 clampings of two half-pulley are rolled up and are hung V-shape belt 75.

Right side in movable side half-pulley 78, be provided with lobe plate 80 near the fixed position of aforementioned circular sealing component 72, can be incorporated at the slide block 80a of its outer circumference end setting among the 78a of slip boss portion of the lobe plate that the outer circumference end in movable side half-pulley 78 forms vertically with being free to slide.

The side of lobe plate 80 1 sides of movable side half-pulley 78 has formed the conical surface to lobe plate 80 lopsidedness, in this conical surface inboard, to place be the net weight roller 81 of lobe plate 80 clampings.

Thereby, increase along with bent axle 40 rotational speeies, be sandwiched in the net weight roller 81 of movable side belt halfbody 78 with 80 rotations of lobe plate, move to centrifugal direction by action of centrifugal force, movable side half-pulley 78 pushing net weight rollers 81 move and accept fixed side half-pulley 77 to left, and the V-shape belt 75 of 77,78 clampings of half-pulley is caught to move to centrifugal direction, increases and make its volume hang diameter.

Corresponding with this drive pulley 76, there is driven pulley 86 at the rear, and it is to be equipped with fixed side half-pulley 87 on the inner sleeve 89 that speed reducer input shaft 92 rotations of reducing gear 38 are being supported freely relatively; In the left side of this fixed side half-pulley 87, on the outer sleeve 90 that can support vertically on the inner sleeve 89, be equipped with movable side belt pulley car body 88 with being free to slide, constituted driven pulley 86 by this two half- pulley 87,88.

Aforementioned V-shape belt 75 in 87,88 clampings of two half-pulley.

Left side at speed reducer input shaft 92 and inner sleeve 89 is being provided with centrifugal clutch 91.Be delivered to the power of inner sleeve 89 by V-shape belt 75, be passed to speed reducer input shaft 92 along with rotating speed increases, centrifugal clutch engages.

The power that speed reducer 38 will be delivered on the speed reducer input shaft 92 is passed on the output shaft 94 by the gear meshing deceleration by jack shaft 93, and output shaft 94 makes trailing wheel 21 rotations by the axletree of trailing wheel 21.

On the hub portion of trailing wheel 21, be provided with drum brake 95, on drum brake axle 96, be equipped with the drum brake arm 97 that connects brake wire, by affecting of brake wire, shaking of drum brake arm 97 makes 96 rotations of drum brake axle and makes drum brake 95 actions.

Cover the transmission case cover 36 of belt stepless speed changer chamber 70 from the left side, covered centrifugal clutch 91, and more forward slightly in the central position is run through freely to rotate and supported aforementioned recoil spools 27 from the drive pulley 76 in the place ahead to the rear; Inner end at this recoil axle 27 is being equipped with spiral gear 100, is being pushed by Returnning spring 101.

Rotatable and can support the sliding axle 102 coaxial on the front interior of transmission case cover 36 with bent axle 40 with being free to slide vertically, on this sliding axle 102, formed driven helical gear 103, it is meshed with aforementioned driving spiral gear 100, simultaneously installing ratchet 104, and its integral body is being pushed to left by Returnning spring 105 at right-hand member.

On the wheel hub 79 of bent axle 40 1 sides, ratchet 104 has formed ratchet 79a relatively in addition, and both can be mutually near separating by the slip of sliding axle 102.

Thereby, one depresses recoil pedal 29, by recoil arm 28 recoil axle 27 elastic force that overcome Returnning spring 101 are rotated, rotate with the driving spiral gear 100 of recoil axle 27 one, rotate with its driven helical gear that is meshed 103 and sliding axle 102, simultaneously, the elastic force that overcomes Returnning spring 105 is to right-hand slip, ratchet 104 is meshed with the ratchet 79a of wheel hub 79 and orders about bent axle 40 and do mandatory rotation, internal-combustion engine 30 startings.

On the other hand, in internal-combustion engine, above the 31a of crankcase portion of left side combination housing 31L, setting starter motor 110, starter motor 110 shown in Fig. 4 has outer stator magnet 111, be enclosed in inner rotator coil 112 around, and the small gear 113 that inner rotator coil 112 is twining highlights to the left side, has formed gear 113a in the end of small gear 113.

Clamping jumps into gear mechanism 115 between 31a of crankcase portion and transmission case cover 36, make axle point to the left and right horizontal direction, be located between starter motor 110 and the drive pulley 76, on jumping into the input gear 116 on right side of gear mechanism 115, this is meshing the small gear 113a of starter motor 110, and the left side jumps into gear 117 and jumps out to left one, promptly is meshed with the starter ring generating gear 77a that forms on the outer periphery of fixed side half-pulley 77.

Thereby, starter motor 110 1 startings, the rotation of small gear 113 is delivered to the input gear 116 of jumping into gear mechanism 115, jumping into gear 117 jumps out from the left side, be meshed with the starter ring generating gear 77a of fixed side belt gear halfbody 77, make fixed side half-pulley 77 and bent axle 40 together rotate, internal-combustion engine 30 startings.

Stop as starter motor 110, jump into gear 117 and throw off at once with the engagement of the starter ring generating gear 77a that introduces.

Form and the fixed side half-pulley 77 of jumping into the starter ring generating gear 77a that gear 117 is meshed, the rubber but fan 118 that freezes is arranged on the side opposing backside surface (left surface) of itself and clamping V-shaped belt 75, and this fan is adhered thereto with the method for rubber sintering.Rotation cooling belt stepless speed changer 35 by cooling fan 118.

With reference to Fig. 1 and Fig. 2, on transmission case cover 36, at its anterior outstanding tubular suction lead 36a that formed; And, tiltedly vertically formed discharge conduit 36b along sidewall in the substantial middle position of fore-and-aft direction.The rear end that on aforementioned suction lead 36a, is connecting corrugated flexible hose 14, this corrugated flexible hose 14 forwards extends, and its front end is connected in from managing down on the outstanding expelling tube 6b that forms of 6 curved part.

At the height and position near steering head 5 of managing 6 down, outstanding formation sucks tube 6a, sucks tube 6a and is communicated with the inside of pipe 6 down with expelling tube 6b.

Thereby, in Belt-type Adjustable-speed unit room 70 because the rotation of bent axle 40,118 1 rotations of cooling net fan, air promptly sucks from managing 6 suction tube 6a down, by under manage 6 and enter corrugated flexible hose 14 from expelling tube 6b; By corrugated flexible hose 14, suck Belt-type Adjustable-speed unit room 70 from suction pipe 36a, discharge to the outside from discharge tube 36b 70 backs, cooling belt stepless speed changer chamber.

Like this, make up on the housing 31R as the right side of crankcase with a relative side at the left side combination housing 31L that constitutes Belt-type Adjustable-speed unit room 70, tab-likely become aforementioned such bent axle 40 to run through wherein central cylindrical part 31d to right-hand, in the place ahead of its following some inclination, formed round opening 130 along central cylindrical part 31d, this circle opening 130 is by closed its inner oil pump 140 of placing as the circular bottom plate 131 of lid member.

Fig. 5 is the right hand view behind alternator 60 and the base plate 131 of taking off of this internal-combustion engine 30.

Right combination housing 31R, 130 two openings of aforementioned central cylindrical part 31d and circle opening are arranged on its sidewall, concentric with bent axle 40, promptly with the outstanding with one heart external diameter that formed of central cylindrical part 31d than the bigger cylindric flange 132 of the external diameter of the external rotor 62 of aforementioned alternator 60, be provided with periphery wall 133 in its outside.

The below part of cylindric flange 132 is owing to aforementioned round opening 130 lacks a part; 133 of periphery walls bloat downwards because of circle opening 130.

Like this, circle opening 130 does not just comprise central cylindrical part 31d as the penetration hole of bent axle 40, and only mutually adjoining with this central authorities' cylindrical part, the radius size of its external diameter and periphery wall 133 about equally, for only covering its built-in oil pump 140 and near structure thereof.

Close the circular bottom plate 131 of round opening 130, as shown in Figure 6, the round opening 130 of packing into, the centre is clamping seal ring 134, and lip part 131a butts up against the periphery attachment face 130a of round opening 130, fixes it by screw 135 on the 130b of external genitalia and anus screw section.

In the outside of base plate 131, bloated wheel hub 131b has been installed, on this installation wheel hub 131b, fixing pulse oscillator 137.

Pulse oscillator 137 is inductor coil formula sensors, establishes to right-hand dashing forward at the outer circumferential face of the external rotor 62 that faces toward alternator, detects the magnetic resistance 138 that is provided with on the external rotor 62 and can learn crank position and rotary speed information.

The pulse oscillator of representing with double dot dash line on Fig. 5 137 is based in the indentation, there of cylindric flange 132 by circle opening 130 with it, has filled up the barbed portion of cylindric flange 132 just and can form wall.

Thereby, because the rotation of the forced air-cooling fan 66 that the right flank of the external rotor 62 of alternator 60 is provided with, will be from the central inhaled air of fan guard 67; Have no the ground of leakage importing central authorities at cylindric flange 132 and pulse oscillator 137 places, then, can improve its cooling effectiveness by cylinder block one side of the big cover 68 guiding internal-combustion engines 30 of fan.

In addition, have tubular projection 131c, pushing the driven gear 141 of inner oil pump 140 in the inner face central authorities of base plate 131.

On driven gear 141, integrally formed pump shaft 142, on the other hand, the actuation gear 143 that is being equipped with at bent axle 40 upper edge main bearings 41 is meshed with this driven gear 141, and the rotation of bent axle 40 is passed to pump shaft 142, drives oil pump 140.

As shown in Figure 6, the oil that is detained in the bottom of the 31a of crankcase portion through oil filter 147, by horizontal oil circuit t1, through roughly becoming vertical oil circuit t2, by the suction port 140a suction of oil pump 140, is discharged by exhaust port 140b more again, supplies with each lubricating fitting.

The oil pump 140 of above-mentioned this internal-combustion engine 30 like this, be disposed at the right side of Belt-type Adjustable-speed machine 35 relative sides and make up on the housing 31R, only corresponding to oil pump on this right side combination housing 31R and near and round opening 130 that form thereof, do not comprise bent axle 40, when existing phase diameter group is little, and the base plate 131 of closing this circle opening 130 also is the plectane of minor diameter.

Thereby when maintenance waited, dull and stereotyped 131 mounting or dismounting were very easy to, and maintainability can be improved.

In addition, because the internal diameter of circle opening 130 is little, the attachment face 130a machining period of the base plate 131 of its periphery reduces, and it is easy that whole processing becomes.

Moreover, because these circle opening 130 diameters diminish, and area diminishes, the breach that can not form cylindric flange 132 because of this circle opening 130 also diminishes, can reduce like this cooling air loss of being blown past internal-combustion engine by forced air-cooling fan 66, in addition in this internal-combustion engine, there is pulse oscillator 137 to fill up aforementioned notch part, cooling effectiveness is further improved.

Among the present invention, since oil pump on the crankcase of a relative side with the Belt-type Adjustable-speed machine and near on the side of part, formed the opening that does not contain the such big small size of bent axle, the existing opening of its open area ratio is little, the area of base plate that covers this opening is also little, and there is no need to run through bent axle, the installation of base plate with take off extremely easy, so its maintainability is good.

In addition, crankcase mouth diminishes, and its periphery attachment face machining period reduces, easy processing.

Moreover, the flange of the outside of the external rotor of the alternator that covering extends out from crankcase diminishes, base plate diminishes, the part that hindered by base plate also reduces, the loss of being blown the cooling air of past internal-combustion engine by the cooling fan on the external rotor of being located at alternator also reduces, and the cooling effectiveness of internal-combustion engine can be improved.

The pulse oscillator that detection is arranged at the magnetic resistance on the external rotor of the alternator on the crankshaft end is based on the base plate, can fill up the place that can not form with setting of pulse oscillator by the obstruction of said flange base plate, utilize pulse oscillator further to reduce the cooling windage loss, the internal-combustion engine cooling effectiveness is further improved.

Claims (2)

1. an oil-pump device of internal combustion engine has in the crankcase of the relative side of Belt-type Adjustable-speed machine in the internal-combustion engine of oil pump, it is characterized in that:

The side part of the opening that passes at the bent axle of aforementioned crankcase is formed for installing the opening of oil pump;

With the oil pump base plate serves as that lid is covered with above-mentioned opening, constitutes oil pump.

2. the oil-pump device of internal combustion engine of recording and narrating by claim 1 is characterized in that, dash forward on aforementioned base plate and establishing the pulse oscillator that detects magnetic resistance, and magnetic resistance is set on the external rotor of the alternator that is located at aforementioned crankshaft end.

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