CN102086810A - Maintenance method for prolonging service life of engine - Google Patents
Maintenance method for prolonging service life of engine Download PDFInfo
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- CN102086810A CN102086810A CN2010105525845A CN201010552584A CN102086810A CN 102086810 A CN102086810 A CN 102086810A CN 2010105525845 A CN2010105525845 A CN 2010105525845A CN 201010552584 A CN201010552584 A CN 201010552584A CN 102086810 A CN102086810 A CN 102086810A
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Abstract
The invention relates to a maintenance method for prolonging the service life of an engine, comprising the following step of: checking and matching gasoline, lubricating oil, a carburetor, a valve actuating mechanism, ignition time and engine parts so as to optimally exerting the performance of the engine. The invention has the advantage of easily eliminating the faults of parts working by matching with the engine, and the function of manyfold prolonging the service life of the maintained engine.
Description
Technical field
The quality of the parts service behaviour that combines with it when the present invention relates to the engine maintenance of motorcycle, thus the working life and the quality of maintenance rear engine improved, be to improve the motor method for maintaining in working life concretely.
Background technique
Motorcycle is because of work under bad environment, the engine speed height, the engine speed of motorcycle is generally all on 10000 right sides of turning left, exceed one times rotating speed than automobile, reach the speed of 70KM, motorcycle wants the 7000 right rotating speeds that turn left just can reach, and as long as automobile is 2000 right sides of turning left, add the maintenance frequency of motorcycle and all too late automobile of use rank of lubricant oil, high-revolving motorcycle own is made the matter worse especially.
Summary of the invention
The object of the present invention is to provide a kind of motor method for maintaining in working life that improves, have the fault of the parts of light eliminating and Engine Matching work, can also prolongation at double keep in repair the rear engine function in working life simultaneously.
The present invention realizes with following technological scheme: a kind of method for maintaining that improves motor working life comprises inspection and the coupling to gasoline, lubricant oil, Carburetor, distribution device, firing time and engine part, so that make the performance of motor perform to the best.
Of the present inventionly have a mind to effect and be, have the fault of the parts of light eliminating and Engine Matching work, can also prolongation at double keep in repair the rear engine function in working life simultaneously.
The accompanying drawing life-span
Fig. 1 is the light leak figure that checks piston ring.
Fig. 2 is piston ring Installation Considerations figure.
Embodiment
One, the understanding of gasoline;
The velocity of combustion of 90# is the fastest, and 93# takes second place, and 98# is the slowest; Otherwise antiknock quality then, and 98# is best, and 90# is the poorest, and present domestic 90# and 93# have accounted for sizable ratio.
The velocity of combustion of gasoline and antiknock quality are directly proportional with the compression ratio of motor, the label of the high more selection of compression ratio is just high more, what we keeped in repair is used car, there is not detection facility to reach the requirement of producer, but we will satisfy client's demand, and long, fuel-efficient, good dynamic property of life-span is so we are necessary suitably to reduce the compression ratio of motor, admittedly require to fill up thick 1 ~ 1.5 times of comparable former car in the cylinder, to adapt to requirement to the market fuel oil.
The motor of boring cylinder particularly, cylinder diameter strengthens, and discharge capacity increases, though increase and have only several milliliters, but the compression ratio of motor has but obviously changed, and the structure of the velocity of combustion of gasoline, the firing time of igniter both and motor has produced and departed from the too high formation pinking of compression ratio.
A lot of EFI cars are arranged now, equipped detonation sensor at the cylinder middle part, when it detects cylinder generation pinking, it will be revised and postpone firing time, be beneficial to protect motor.More in the top-of-the-range version, if fuel tank has added gasoline not up to standard, will add 97# originally, but you have but added 93# or 90#'s, the pinking number of times that CPU detects is too many, and CPU will order the motor can not high speed operation even stop working.
So 2 requirements are here arranged, first, boring cylinder car must thicken in the cylinder and fill up, strengthening super+50 cylinder also will increase by a paper washer below cylinder; The second, gasoline is just not low with regard to height.
Two, the selection of lubricant oil;
The OIL IN LUBRICATING OIL PRODUCTION producer of any brand does not have deceit practiced against consumers, and they print the credit rating and the Viscosity Index of this product on the label of each bottle lubricant oil.
The gasoline engine oil credit rating starts with S, and the diesel engine oil credit rating starts with C.Gasoline engine oil S beginning band letter as: SD, SE, SF, SG, SH, SJ, SL, highest level is the SM level at present, had better not use below the SF level.
The selection of viscosity, according to the weather conditions of locality, when assurance was enough lubricated, the low more engine drag of viscosity was more little.How is Viscosity Index distinguished? be as the criterion with SL5W/40, we do an analysis.S is expressed as the lubricant oil that petrol engine uses, and what L represented is the code name of high-level lubricant oil, if SF will be one bottle of plain oil.W is the English alphabet beginning in winter, represents to use winter lubricant oil.The numeral of W front is low more, and the ambient temperature of use is low more.40 expression summer lubricating oils, the ambient temperature of use is spent between ~ 40 degree 30, if 50, the ambient temperature of use is between 35 degree ~ 50 degree.
The full meaning of SL-5W40 is: high-level petrol engine uses lubricant oil, and the weather conditions of use are between subzero 30 degree are spent to above freezing 40.
The machine oil that a lot of SF40 are arranged in the market, its full meaning is: the plain oil of petrol engine use in summer.
Southern area is as the criterion with SG5W/30 with SG15W/40, northern area, as riding type car 2000KM, and foot plate bicycle 1500KM or three months, which arrives first is the drain period, changes at least 4 times in 1 year.Even you ran 500KM in three months and also will change it, because machine oil adds the motor the inside to, airborne moisture can absorb in the lubricant oil by the engine balance hole, destroys every index of lubricant oil.
Lubricant oil can not add too much the adding amount of lubricant oil simultaneously: the normal replacement cycle screws in oil scale and is as the criterion, up and down between the graduation line, not too much!
Machine oil the more endangers the more
1. the motor useful space is occupied, and running resistance increases;
2. the heat that produces of motor, because the useful space is occupied, it is overheated to cause, and power descends, and oil consumption is risen;
3. too much machine oil enters air-strainer with the air balance hole of motor, is brought into the firing chamber; Too much machine oil makes the scraper ring frizing decreased performance of piston ring simultaneously, scurries the firing chamber on the machine oil, causes burn oil;
4. too much machine oil enters the firing chamber, forms carbon distribution, and compression ratio is increased, and causes engine knock, shortens motor working life.
Three, the effect in engine balance hole;
The effect in engine balance hole is during with engine operation, and the negative-pressure gas that is produced is discharged motor by equalizing orifice, does not increase with the internal stress that guarantees motor; After the engine operation, increase along with temperature, in-engine gas produces and expands, if this moment, the engine balance hole had obstruction or half to stop up, just as our air compressor in inflation, the motor internal pressure is very big, and gas will together ooze out machine oil from the place of sealings such as the sealing gasket of motor, oil sealing, form leakage of oil.
Have again because the wearing and tearing in various degree of cylinder and piston ring during engine operation, are scurried crankcase under the inflammable mixture, inflammable mixture is discharged in the atmosphere by equalizing orifice, cause the gasoline waste, contaminated air.Can be incorporated into air-strainer to the intubate of equalizing orifice during maintenance, beat an eye on air-strainer, a dress little joint connects up the intubate of equalizing orifice, and the gas of scurrying can further be burnt, and saves a certain amount of gasoline, reduces atmospheric pollution.
Four, to the quick judgement of movable part quality;
Movable part serves as main as introducing with bearing and connecting rod mainly.During the dismounting engine part, we just must know the quality of a part, the quality of a part if we have no idea to judge rapidly, and will make the maintenance master worker or change part more increases cost, increases burden to the client; Changed part less, root problem does not solve client's complaint.
With the bearing is after the master dismantles, must not clean, and direct rotary bearing is if bearing has abnormal voice to change.
If it is the platform that can not produce noise that rocking arm and camshaft are not pulled normal wear, have only apparent in view rank, formation side just can produce abnormal voice, slight not pulling can produce noise;
If camshaft has the installation unidirectional stop valve, as the cam of GY6-125, one one-way valve is arranged in the right bearing inboard, if this valve damages, will make motor not have high speed or and scurry the abnormal phenomenon of similar igniting.When so camshaft is installed, can take down this valve, with the proper functioning that guarantees motor or later on this valve damage the unnecessary trouble of being brought.
Gap, the connecting rod left and right sides is big again, and it can not produce noise yet; But if some gaps are arranged up and down, noise occurs at once.The maintenance of connecting rod is down rotated position about 10 degree to crankshaft rotating to top dead center, and spur connecting rod this moment up and down, and gapped 100% produces noise, the relieved use in no gap.
Five, the correct installation of piston ring is to the influence of engine life;
The major function of piston ring has: sealing, heat conduction, frizing.
Most maintenance master worker only think piston ring just sealing prevent the burn oil effect, so the installation of piston ring is just its certain angle that staggers.I find much to keep in repair the master worker and simply piston ring 180 degree am staggered, opening of air inlet, and opening of exhaust is thought as long as opening is not overlapping just passable, can burn oil with regard to not leaking gas.
We know, machine oil is lubricated incessantly also will to dispel the heat, cleaning, sealing, anti-oxidant, wear-resisting six functions.I do not know whether everybody noted, behind the gasoline combustion, to produce the high temperature of nearly thousand degree in the firing chamber, and each position of the distribution of temperature has nothing in common with each other, temperature near outlet pipe is the highest, cylinder also is than higher near this side temperature of exhaust valve simultaneously, and piston ring and cylinder fit tightly together, and piston ring and cylinder form mutual conductive force.If this moment, the opened gap of piston ring is subtend exhaust valve direction just in time, because hot transfer principle, the temperature that makes gap-clearance of piston rings place is higher more than 20% than normal value, and will be seriously influenced the working life of piston ring.
The selection of piston ring, at first require us will have gained some understanding to the material of piston ring, if our minimum piston ring uses all unclear of what fabrication techniques, is the ring that we change secure? still recommend to us with the accessory boss? piston ring is from early stage spheroidal graphite cast iron, plate to the top layer iron, a series of technological innovations such as degree of depth nitrogenize, pottery infiltration.Spheroidal graphite cast iron generally all uses at second ring, and color is black color; The surface hardness that ring is ironed in plating is about 800 degree, and the surface hardness of nitrogenize ring is about 1200 degree, and the surface hardness of pottery infiltration ring is up to 2000 degree, and ceramic layer has self-lubricating function and high temperature resistant, and what the present performance of second ring was best is side pottery infiltration.
It is right that the material of piston ring is selected, and also will check the elasticity and the Ratio of the circumference of a circle to its diameter of piston ring.My the bad explanation of elasticity this respect, you can contrast in the middle of reality; Inspection as for Ratio of the circumference of a circle to its diameter, piston ring is packed in the cylinder sleeve, with piston ring is pushed cylinder 1/5 position, cylinder can not have greasy dirt before pushing, cylinder bottom towards light or daylight, whether that observes piston ring has light leak all around, if the light leak part surpasses more than 5%, even if material can not be used well again.
The installation of piston ring, at first the installation of piston is directive, have on the piston ' IN ' mark towards the intake valve direction, do not have ' IN ' mark, but ' arrow ' or ' EX ' mark arranged, ' arrow ' or ' EX ' points to exhaust valve.The opening of grommet is towards positive exhaust valve, the installation of two scraper rings is the center with the grommet, 20 degree mutually stagger, the installation of compression ring is outwardly markd, the apical ring that is of beating ' 1 ' mark is arranged, and the opening of twice compression ring all will be avoided wrist pin, is the center with the opening of grommet, the opening of three road rings 120 degree that stagger mutually, simultaneously the jump ring opening of wrist pin can not be overlapping with the opening of piston pin hole.
Six, how to alleviate the load of distribution device, prolong the working life of distribution device;
About how alleviating the load of distribution device, method has one, and very practical.Exactly inner valve spring is taken down, help reducing the wearing and tearing of the resistance of timing chain and cam, rocking arm, great help is arranged the working life that prolongs distribution device.70,100,110, GY6, CG125, GS125, CB125T, CA250 or the like can use on a large scale general vehicle picture:, and this method used more than the motorcycle at 2000, and low-speed dynamic is better, and noise is littler.
Seven, the valve clearance is to the influence of motor;
The adjusting of valve is a benchmark with cold car generally, reaches that the left and right sides is gapped does not have the gap up and down, and its gap is approximately at 0.03 ~ 0.05mm, with the motor of forms such as JH70, JH90, the cylinder 100,110 that crouches all within this scope.
The upright cylinder vehicle of Honda as: CG125, CM125, CB125T, CA250, its inlet and exhaust valve gap is all between 0.05 ~ 0.08mm.
GS, GN engine intake valve gap be at 0.08mm, emission valve clearance 0.10mm;
CH125 water cooled engine inlet and exhaust valve gap 0.10mm;
The inlet and exhaust valve gap of GY6-125 or GY6-150 is at 0.10mm ~ 0.12mm;
The inlet and exhaust valve gap of WH100T or WH125T foot plate bicycle is at 0.12mm ~ 0.14mm; It more than is present domestic representative vehicle.
Slight valve sound is arranged during idling, and the sound of opening the throttle disappears, the real genus normally.Noise has optimum and pernicious branch, must not the people for turning down, in order to avoid cylinder temperature is too high, cause cylinder upper inordinate wear and valve seat to burn.
To the motor of some high compression ratios, the valve clearance is less than normal little by little, all can cause difficult startup, easy flame-out, unstable idle speed.The GN125 motor of picture WH100-T, improvement.You can not be referred to this class fault it on the Carburetor fault, otherwise you can not repair forever.
Eight, firing time is to the influence of motor;
Most maintenance master worker lumps valve timing and ignition timing together, and valve timing is piston top dead center and corresponding cooperation of camshaft compression position line, generally is easier to understand.
And three requirements are arranged firing time at least: positive hour angle, transition angle, also have a high speed angle.The graduation line of magnetogenerator flywheel outer rim is promptly known.
Observe and to find by ignition timing light, (F1) graduation line is just aimed at the quiet mark of motor when in idling, when 3000 commentaries on classics are above, then the two perpendicular marks (11) of advance angle graduation line are aimed at the quiet mark of motor, then based between idling and the high speed (3000 rev/mins), along with the variation of throttle between this, positive hour angle (F1) graduation line changes between high speed angle (11) as for the transition angle, transition must steadily the jump type transition can not occur.
If graduation line only rests on the position of high speed angle (11), this phenomenon is breakneck to motor, and free wheel device often damages, piston knock, and motor load increases, carbon brush wearing and tearing aggravation.At cold car, storage battery is often felt undertension especially, and all of everything all are the misfortunes that igniter is invited in fact.What this also will remind a bit be, the performance of spark coil and rotor magnetic descend, and cause ignition energy to descend, with the refrigeration car bad car or starting time long, cause some unnecessary wearing and tearing to motor.According to statistics, vehicle more than 90%, the motor premature damage comprises storage battery, relay, motor, overdrive clutch, cylinder, connecting rod etc., be the difficulty of motor start or starting time long causing, particularly motor accounts for more than 70% of total wearing and tearing to running in an instant by static, so remind the maintenance master worker when service engine, certain attention checkpoint firearm, if former car is to exchange igniter, preferably be replaced with the direct current igniting, to guarantee low speed and ignition energy at a high speed.
Three angles of dc point firearm: low speed angle, transition angle, high speed angle must have, otherwise can not use.
Nine, the Carburetor working state is to the influence of motor.
The working state of Carburetor relates to the maintenance to Carburetor, must clean up Carburetor (from outside to inside) before the maintenance Carburetor, and the finding that can pull down is all pulled down.Check each metering-orifice of Carburetor: main jet, main foaming are managed, idling foams pipe, start upgrading valve, and mediation, guarantee that each metering-orifice is unblocked.
Whether main jet foaming pipe, idle metering jet foaming pipe, air or mixed gas adjusting screw have coating (gasoline gum), and it is clean to use self-control steel wire or steel disc that coating is removed in case of necessity, and the oil guiding hole in the middle of the idle metering jet must notice that removing is clean.
The adjustment of float: Carburetor is stood upside down about oblique 75 degree, toward pressing down, when unclamping finger, float must be returned to the extreme higher position to finger under the power of the top of float pin float, check the balanced line of float this moment, whether tilt upward a little slightly with the junction plane of the float chamber of Carburetor is parallel.
Carburetor also has important link------atmospheric equilibrium hole.If this hole is stopped up or half stop up, car is often indescribable flame-out, and your check circuit, oil circuit, compression are all very good, such one turns from side to side through you, and car can start again.Sometimes just flame-out about 1 kilometer, three liang of talentes bump one time sometimes, more exhausted is fine day not can, one to rainy day, fault occurred again, maintenance master worker check circuit, emat coil, electronics, spark coil, the result gets nothing.The vehicle that this fault occurs mainly concentrates on the plunger Carburetor, and Carburetor is inverted, and can see a hole, this hole links to each other with atmosphere, is beneficial to gasoline and flows into float chamber, could guarantee the proper functioning of motor,------atmospheric equilibrium hole of during cleaning, must not having forgotten mediation.
The simple test of Carburetor.Start after 3 minutes, firmly rock vehicle,
1, vehicle is flame-out at once, does not work for starting upgrading valve;
Vehicle is flame-out, but idling has reduction, then recovers normal again, and following several situation is then arranged, and 1, the wearing and tearing of main spindle; 2, main jet wearing and tearing; 3, micrometer adjusting screw is adjusted inaccuracy.Do we have a kind of simple method to test and regulate so? answer is sure, that is to say: no matter be the control air or the control mixed gas.
1, engine warming up 3 ~ 5 minutes,
If 2 unstable idles, it is not flame-out that idling is adjusted to motor,
3, regulate micrometer adjusting screw, no matter micrometer adjusting screw is to control in which way, as long as by till regulating micrometer adjusting screw and making engine speed rise to peak,
4, regulate the idling screw speed drop got off,
5, regulate micrometer adjusting screw again, see whether idling changes, once more motor is transferred to idling as ask the visitor in and get final product.
PLSCONFM before adjusting
1: the spark plug gap is in critical field, or than the big 0.1 ~ 0.2mm of standard clearance;
2: the valve clearance can not be tight slightly.
Claims (10)
1. a method for maintaining that improves motor working life comprises inspection and the coupling to gasoline, lubricant oil, Carburetor, distribution device, firing time and engine part, so that make the performance of motor perform to the best.
2. a kind of dimension the according to claim 1 improved the motor method for maintaining in working life, the velocity of combustion of described gasoline and antiknock quality are directly proportional with the compression ratio of motor, the label of the high more selection of compression ratio is just high more, what we keeped in repair is used car, there is not detection facility to reach the requirement of producer, but we will satisfy client's demand, long, fuel-efficient, good dynamic property of life-span, so we are necessary suitably to reduce the compression ratio of motor, admittedly require to fill up thick 1 ~ 1.5 times of comparable former car in the cylinder, to adapt to requirement to the market fuel oil;
So 2 requirements are here arranged, first, boring cylinder car must thicken in the cylinder and fill up, strengthening super+50 cylinder also will increase by a paper washer below cylinder; The second, gasoline is just not low with regard to height.
3. a kind of method for maintaining that improves service life of aeroengine according to claim 1; The described standard of changing oil is that southern area is as the criterion with SG5W/30 with SG15W/40, northern area; Such as riding type car 2000KM; Scooter 1500KM or three months; Which arrives first is the drain period; At least changed in 1 year 4 times; Even you ran 500KM in three months and also will change it; Because machine oil adds the engine the inside to; Airborne moisture can absorb in the lubricating oil by the engine balance hole; Destroy the indices of lubricating oil
Lubricant oil can not add too much the adding amount of lubricant oil simultaneously: the normal replacement cycle screws in oil scale and is as the criterion, up and down between the graduation line, not too much!
Machine oil the more endangers the more
1. the motor useful space is occupied, and running resistance increases;
2. the heat that produces of motor, because the useful space is occupied, it is overheated to cause, and power descends, and oil consumption is risen;
3. too much machine oil enters air-strainer with the air balance hole of motor, is brought into the firing chamber; Too much machine oil makes the scraper ring frizing decreased performance of piston ring simultaneously, scurries the firing chamber on the machine oil, causes burn oil;
4. too much machine oil enters the firing chamber, forms carbon distribution, and compression ratio is increased, and causes engine knock, shortens motor working life.
4. a kind of motor method for maintaining in working life that improves according to claim 1, the effect in described engine balance hole is during with engine operation, the negative-pressure gas that is produced is discharged motor by equalizing orifice, does not increase with the internal stress that guarantees motor; After the engine operation, increase along with temperature, in-engine gas produces and expands, if this moment, the engine balance hole had obstruction or half to stop up, just as our air compressor in inflation, the motor internal pressure is very big, and gas will together ooze out machine oil from the place of sealings such as the sealing gasket of motor, oil sealing, form leakage of oil
Have again because the wearing and tearing in various degree of cylinder and piston ring during engine operation, are scurried crankcase under the inflammable mixture, inflammable mixture is discharged in the atmosphere by equalizing orifice, cause the gasoline waste, contaminated air can be incorporated into air-strainer to the intubate of equalizing orifice during maintenance, on air-strainer, beat an eye, a dress little joint connects up the intubate of equalizing orifice, and the gas of scurrying can further be burnt, save a certain amount of gasoline, reduce atmospheric pollution.
5. a kind of motor method for maintaining in working life that improves according to claim 1, described quick judgement to the movable part quality:
Movable part serves as main the work with bearing and connecting rod mainly, during the dismounting engine part, we just must know the quality of a part, the quality of a part if we have no idea to judge rapidly, to make the maintenance master worker or change part more increases cost, increases burden to the client; Changed part less, root problem does not solve client's complaint,
With the bearing is after the master dismantles, must not clean, direct rotary bearing, if bearing has abnormal voice to change,
If it is the platform that can not produce noise that rocking arm and camshaft are not pulled normal wear, have only apparent in view rank, formation side just can produce abnormal voice, slight not pulling can produce noise;
If camshaft has the installation unidirectional stop valve, the cam of picture GY6-125, in the right bearing inboard one one-way valve is arranged, if this valve damages, to make motor not have high speed or and scurry the abnormal phenomenon of similar igniting, when so camshaft is installed, can take down this valve, with the proper functioning that guarantees motor or later on this valve damage the unnecessary trouble of being brought;
Gap, the connecting rod left and right sides is big again, and it can not produce noise yet; But if some gaps are arranged up and down, noise occurs at once, and the maintenance of connecting rod is down rotated position about 10 degree to crankshaft rotating to top dead center, and spur connecting rod this moment up and down, and gapped 100% produces noise, the relieved use in no gap.
6. a kind of motor method for maintaining in working life that improves according to claim 1, the correct installation of described piston ring is to the influence of engine life;
The major function of piston ring has: sealing, heat conduction, frizing,
Most maintenance master worker only thinks that piston ring just seals the burn oil effect that prevents, so the installation of piston ring is just its certain angle that staggers, I find much to keep in repair the master worker and simply piston ring 180 degree am staggered, opening of air inlet, opening of exhaust, think as long as opening is not overlapping just passable, can burn oil with regard to not leaking gas not;
We know, machine oil is lubricated incessantly also will to dispel the heat, cleaning, sealing, anti-oxidant, wear-resisting six functions, behind the gasoline combustion, to produce the high temperature of nearly thousand degree in the firing chamber, and each position of the distribution of temperature has nothing in common with each other, temperature near outlet pipe is the highest, cylinder also is than higher near this side temperature of exhaust valve simultaneously, piston ring and cylinder fit tightly together, piston ring and cylinder form mutual conductive force, if this moment, the opened gap of piston ring is subtend exhaust valve direction just in time, because hot transfer principle, the temperature that makes gap-clearance of piston rings place is higher more than 20% than normal value, to be seriously influenced the working life of piston ring, the installation of piston ring, at first the installation of piston is directive, have on the piston ' IN ' mark towards the intake valve direction, there is not ' IN ' mark, but ' arrow ' or ' EX ' mark is arranged, ' arrow ' or ' EX ' points to exhaust valve, the opening of grommet is towards positive exhaust valve, and the installation of two scraper rings is the center with the grommet, and 20 degree mutually stagger, the installation of compression ring is outwardly markd, the apical ring that is of beating ' 1 ' mark is arranged, and the opening of twice compression ring all will be avoided wrist pin, is the center with the opening of grommet, the opening of three road rings 120 degree that stagger mutually, simultaneously the jump ring opening of wrist pin can not be overlapping with the opening of piston pin hole;
The inspection of piston ring Ratio of the circumference of a circle to its diameter, piston ring is packed in the cylinder sleeve, with piston ring is pushed cylinder 1/5 position, cylinder can not have greasy dirt before pushing, cylinder bottom towards light or daylight, whether that observes piston ring has light leak all around, if the light leak part surpasses more than 5%, even if material can not be used well again.
7. a kind of motor method for maintaining in working life that improves according to claim 1, the described load that how to alleviate distribution device, the working life of prolongation distribution device;
Inner valve spring is taken down, be beneficial to the wearing and tearing of the resistance that reduces timing chain and cam, rocking arm, to great help is arranged the working life that prolongs distribution device, 70,100,110, GY6, CG125, GS125, CB125T, CA250 or the like can use on a large scale general vehicle picture:, and this method was used more than the motorcycle at 2000, low-speed dynamic is better, and noise is littler.
8. a kind of motor method for maintaining in working life that improves according to claim 1, described valve clearance is to the influence of motor;
The adjusting of valve is a benchmark with cold car generally, reaches that the left and right sides is gapped does not have the gap up and down, and its gap is approximately at 0.03 ~ 0.05mm, with the motor of forms such as JH70, JH90, the cylinder 100,110 that crouches all within this scope,
The upright cylinder vehicle of Honda as: CG125, CM125, CB125T, CA250, its inlet and exhaust valve gap is all between 0.05 ~ 0.08mm.
GS, GN engine intake valve gap be at 0.08mm, emission valve clearance 0.10mm;
CH125 water cooled engine inlet and exhaust valve gap 0.10mm;
The inlet and exhaust valve gap of GY6-125 or GY6-150 is at 0.10mm ~ 0.12mm;
The inlet and exhaust valve gap of WH100T or WH125T foot plate bicycle is at 0.12mm ~ 0.14mm; More than be present domestic representative vehicle,
Slight valve sound is arranged during idling, and the sound of opening the throttle disappears, and belongs to normally in fact, and noise has optimum and pernicious branch, must not the people for turning down, in order to avoid cylinder temperature is too high, cause cylinder upper inordinate wear and valve seat to burn,
To the motor of some high compression ratios, the valve clearance is less than normal little by little, all can cause difficult startup, easy flame-out, unstable idle speed, the GN125 motor of picture WH100-T, improvement, you can not be referred to this class fault it on the Carburetor fault, otherwise you can not repair forever.
9. a kind of motor method for maintaining in working life that improves according to claim 1, described firing time is to the influence of motor;
Three requirements are arranged at least: a positive hour angle firing time, a transition angle, also has a high speed angle, observe and to find by ignition timing light, (F1) graduation line is just aimed at the quiet mark of motor when in idling, when 3000 commentaries on classics are above, then the two perpendicular marks (11) of advance angle graduation line are aimed at the quiet mark of motor, as for the transition angle then based on idling and at a high speed between (3000 rev/mins), along with the variation of throttle between this, positive hour angle (F1) graduation line changes between high speed angle (11), transition must be steadily, the jump type transition can not appear
If graduation line only rests on the position of high speed angle (11), this phenomenon is breakneck to motor, free wheel device often damages, piston knock, and motor load increases, carbon brush wearing and tearing aggravation, at cold car, storage battery is often felt undertension especially, and all of everything all are the igniter problems in fact, have again, the performance of spark coil and rotor magnetic descend, and cause ignition energy to descend, with the refrigeration car bad car or starting time long, cause some unnecessary wearing and tearing to motor, according to statistics, the vehicle more than 90%, motor premature damage, comprise storage battery, relay, motor, overdrive clutch, cylinder, connecting rod etc., be the difficulty of motor start or starting time long causing, particularly motor by static to running in an instant, account for more than 70% of total wearing and tearing, so the master worker is when service engine in maintenance, certain attention checkpoint firearm if former car is to exchange igniter, preferably is replaced with the direct current igniting, to guarantee low speed and ignition energy at a high speed
Three angles of dc point firearm: low speed angle, transition angle, high speed angle must have, otherwise can not use.
10. a kind of motor method for maintaining in working life that improves according to claim 1, described Carburetor working state is to the influence of motor;
The working state of Carburetor relates to the maintenance to Carburetor, Carburetor must be cleaned up (from outside to inside) before the maintenance Carburetor, the finding that can pull down is all pulled down, check each metering-orifice of Carburetor: main jet, main foaming are managed, idling foams pipe, start upgrading valve, and mediation, guarantee that each metering-orifice is unblocked
Whether main jet foaming pipe, idle metering jet foaming pipe, air or mixed gas adjusting screw have coating (gasoline gum), and it is clean to use self-control steel wire or steel disc that coating is removed in case of necessity, and the oil guiding hole in the middle of the idle metering jet must notice that removing is clean,
The adjustment of float: Carburetor is stood upside down about oblique 75 degree, and finger toward pressing down, unclamps float when pointing, float must be returned to the extreme higher position under the power of the top of float pin, check the balanced line of float this moment, whether tilt upward a little slightly with the junction plane of the float chamber of Carburetor is parallel
Carburetor also has important link------atmospheric equilibrium hole, if this hole is stopped up or half obstruction, car is often indescribable flame-out, your check circuit, oil circuit, compress all very goodly, such one turn from side to side through you, car can start again, sometimes just flame-out about 1 kilometer, sometimes three liang of talentes bump one time, more exhausted is fine day not can, one to rainy day, fault occurred again, maintenance master worker check circuit, emat coil, electronics, spark coil, the result gets nothing, and the vehicle that this fault occurs mainly concentrates on the plunger Carburetor, Carburetor is inverted, can see a hole, this hole links to each other with atmosphere, is beneficial to gasoline and flows into float chamber, could guarantee the proper functioning of motor,------atmospheric equilibrium hole of during cleaning, must not having forgotten mediation
The simple test of Carburetor started after 3 minutes, firmly rocked vehicle,
1. vehicle is flame-out at once, does not work for starting upgrading valve;
2. vehicle is flame-out, but idling has reduction, then recovers normal again, and following several situation is then arranged, and 1, the wearing and tearing of main spindle; 2, main jet wearing and tearing; 3, micrometer adjusting screw is adjusted inaccuracy, do we have a kind of simple method to test and regulate so? answer is sure, that is to say: no matter be the control air or the control mixed gas,
1, engine warming up 3 ~ 5 minutes,
If 2 unstable idles, it is not flame-out that idling is adjusted to motor,
3, regulate micrometer adjusting screw, no matter micrometer adjusting screw is to control in which way, as long as by till regulating micrometer adjusting screw and making engine speed rise to peak,
4, regulate the idling screw speed drop got off,
5, regulate micrometer adjusting screw again, see whether idling changes, once more motor is transferred to idling as ask the visitor in and get final product,
PLSCONFM before adjusting
1: the spark plug gap is in critical field, or than the big 0.1 ~ 0.2mm of standard clearance;
2: the valve clearance can not be tight slightly.
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| CN105240069A (en) * | 2015-10-31 | 2016-01-13 | 中国嘉陵工业股份有限公司（集团） | Inlet and exhaust valve structure of motorcycle engine |
| CN105240082A (en) * | 2015-10-31 | 2016-01-13 | 中国嘉陵工业股份有限公司（集团） | Motorcycle engine |
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