CN102086810B - Maintenance method for prolonging service life of engine - Google Patents
Maintenance method for prolonging service life of engine Download PDFInfo
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- CN102086810B CN102086810B CN 201010552584 CN201010552584A CN102086810B CN 102086810 B CN102086810 B CN 102086810B CN 201010552584 CN201010552584 CN 201010552584 CN 201010552584 A CN201010552584 A CN 201010552584A CN 102086810 B CN102086810 B CN 102086810B
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- 238000012423 maintenance Methods 0.000 title claims abstract description 19
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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 component working performance that combines with it when the present invention relates to the engine maintenance of motorcycle, thus working life and the quality of maintenance rear engine improved, be the method for maintaining that improves service life of aeroengine concretely.
Background technique
Motorcycle is because of work under bad environment, engine speed is high, 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 use rank of the maintenance frequency of motorcycle and lubricant oil all not as good as automobile, high-revolving motorcycle itself is made the matter worse especially.
Summary of the invention
The object of the present invention is to provide a kind of method for maintaining that improves service life of aeroengine, 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 service life of aeroengine comprises inspection and the coupling to gasoline, lubricant oil, Carburetor, distribution device, firing time and engine part, in order to 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 higher selection of compression ratio is just higher, 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 the requirement to the market fuel oil.
The motor of boring cylinder particularly, cylinder diameter strengthens, and discharge capacity increases, although increase and only have 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 electric jet vehicles 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, originally will add 97#, 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 for up not for down.
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 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 lower engine drag of viscosity was less.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 lower, and the ambient temperature of use is lower.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, such 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 the indices 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 hydraulic performance decline of piston ring simultaneously, alters 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 service life of aeroengine.
Three, the effect in engine balance hole;
The effect in engine balance hole is during with engine operation, and the negative-pressure gas that produces 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 γ-ray emission expands, if this moment, the engine balance hole had obstruction or half to stop up, just as we the inflation air compressor, the motor internal pressure is very large, and gas will together ooze out machine oil from the place of the sealings such as the sealing gasket of motor, oil sealing, form leakage of oil.
Have again because the in various degree wearing and tearing of cylinder and piston ring during engine operation, channel to 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 at air-strainer, a dress little joint connects up the intubate of equalizing orifice, and the gas of altering 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 mainly take bearing and connecting rod as main as introduction.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 less part, root problem does not solve client's complaint.
, must not clean after main dismounting take bearing, 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, only have 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, in the right bearing inboard one one-way valve is arranged, if this valve damages, will make motor alter the abnormal phenomenon of similar igniting without high speed or.When so camshaft is installed, can take down this valve, with the normal operation that guarantees motor or later on this valve damage the unnecessary trouble of being brought.
Gap, the connecting rod left and right sides is large 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 up and down connecting rod this moment, and gapped 100% produces noise, the relieved use of gapless.
Five, the correct installation of piston ring is on the impact 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 incessantly lubricated 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 is different, temperature near outlet pipe is the highest, cylinder also is 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? or 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 the 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 the second ring was best is side pottery infiltration.
It is right that the material of piston ring is selected, and also will check 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, push front cylinder greasy dirt can not be arranged, 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 centered by 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, centered by the opening of grommet, the opening of three road rings 120 degree that mutually stagger, simultaneously the jump ring opening of wrist pin can not with the superposition of end gap 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, be conducive to reduce the wearing and tearing of the resistance of 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 etc. can use on a large scale general vehicle picture:, and the method used more than the motorcycle at 2000, and low-speed dynamic is better, and noise is less.
Seven, the valve clearance is on the impact of motor;
The adjusting of valve is generally take cold car as benchmark, reaches the gapped up and down gapless in the left and right sides, and its gap is approximately at 0.03 ~ 0.05mm, with the motor of JH70, JH90, sleeping cylinder 100, the forms such as 110 all within this scope.
The vertical 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 minute, 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 on the impact of motor;
Most maintenance master worker lumps valve timing and ignition timing together, and valve timing is the piston top dead center cooperation corresponding with 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 namely known.
Observe and to find by ignition timing light, (F1) graduation line is just aimed at the quiet mark of motor when in idling, 3000 when turning 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 is to changing 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, the carbon brush abrasion aggravation.At cold car, storage battery is often felt undertension especially, and 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%, motor damages too early, 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 direct-current ignitor: low speed angle, transition angle, high speed angle must have, otherwise can not use.
Nine, the Carburetor working state is on the impact 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 tube, idling foaming tube, startup upgrading valve, and dredging guarantee that each metering-orifice is unblocked.
Whether main jet foaming tube, idle metering jet foaming tube, air or mixed gas are regulated screw coating (gasoline gum), with self-control steel wire or steel disc coating is removed totally in case of necessity, and the oil guiding hole in the middle of the idle metering jet must be noted removing 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 slightly tilt upward a little with the junction plane of the float chamber of Carburetor is parallel.
Carburetor also has very 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 piston 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, the normal operation of guarantee motor, during cleaning, must not forget dredging------atmospheric equilibrium hole.
The simple test of Carburetor.Start after 3 minutes, firmly rock vehicle,
1, vehicle is at once flame-out, does not work for starting upgrading valve;
Vehicle is flame-out, but idling has reduction, then recovers again normal, 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 idle screw rotating speed lowered,
5, regulate again micrometer adjusting screw, see whether idling changes, again 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 large 0.1 ~ 0.2mm of standard clearance;
2: the valve clearance can not be tight slightly.
Claims (3)
1. method for maintaining that improves service life of aeroengine, its operating procedure is as follows:
The first step, boring cylinder car must be thickeied in the cylinder and fill up, and also will increase by a paper washer below cylinder for strengthening the cylinder that surpasses 0.5mm, to reduce the compression ratio of motor, reduces pinking;
Second step is incorporated into air-strainer to the intubate in engine balance hole during maintenance, beats an eye at air-strainer, a dress little joint connects up the intubate of equalizing orifice, and the gas of altering can further be burnt, save a certain amount of gasoline, reduce atmospheric pollution;
In the 3rd step, camshaft has the installation unidirectional stop valve, directly this valve is taken down, with the normal operation that guarantees motor or later on this valve damage the unnecessary trouble of being brought;
In the 4th step, the maintenance of connecting rod is down rotated position about 10 degree to crankshaft rotating to top dead center, and spur up and down connecting rod this moment, if gappedly must change the relieved use of gapless;
The 5th step, for 70,100,110, GY6, CG125, GS125, CB125T, CA250 motor, 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, low-speed dynamic is better, and noise is less;
In the 6th step, the adjusting of valve is all take cold car as benchmark, at maintenance JH70, JH90, sleeping cylinder 100,110 motor, reaches the gapped up and down gapless in the left and right sides, and its gap is at 0.03 ~ 0.05mm; The vertical cylinder vehicle of Honda: 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;
The 7th step, when service engine, certain attention checkpoint firearm, if former car is to exchange igniter, then be replaced with direct-current ignitor, to guarantee low speed and ignition energy at a high speed, 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, 3000 when turning above, then the two perpendicular marks ' 11 ' of advance angle graduation line are aimed at the quiet mark of motor, 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 is to changing between the high speed angle ' 11 ' as for the transition angle, transition must be steadily, the jump type transition can not occur, if graduation line only rests on the position at high speed angle ' 11 ', then change with positive hour angle, the transition angle, the direct-current ignitor of three angles in high speed angle;
The 8th step, the working state of Carburetor relates to the maintenance to Carburetor, must clean up Carburetor 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 tube, the idling foaming tube, start upgrading valve, and dredging, guarantee that each metering-orifice is unblocked, check the main jet foaming tube, the idle metering jet foaming tube, whether air or mixed gas are regulated screw coating, with steel wire or steel disc coating is removed totally, the oil guiding hole in the middle of the idle metering jet must be noted removing clean, during cleaning, certain dredging atmospheric equilibrium hole
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 slightly tilt upward a little with the junction plane of the float chamber of Carburetor is parallel
Carburetor is tested, and ato unit firmly rocked vehicle after 3 minutes,
If vehicle is at once flame-out, do not work for starting upgrading valve;
If vehicle is flame-out, but idling has reduction, then recover again normal, following several situation is then arranged, 1, the wearing and tearing of main spindle; 2, main jet wearing and tearing; 3, micrometer adjusting screw is adjusted inaccuracy, needs further regulate Carburetor, 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 idle screw rotating speed lowered,
5, regulate again micrometer adjusting screw, see whether idling changes, again 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 large 0.1 ~ 0.2mm of standard clearance;
2: the valve clearance can not be tight slightly.
2. a kind of method for maintaining that improves service life of aeroengine according to claim 1, it is for 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, pushing front cylinder can not have greasy dirt, and whether the cylinder bottom towards light or daylight, is had light leak around the observation piston ring, the light leak part can not surpass 5%, otherwise can not use.
3. a kind of method for maintaining that improves service life of aeroengine according to claim 1, to the quick judgement of movable part quality:, clean after main dismounting take bearing, direct rotary bearing is if bearing has abnormal voice to change; If it is can not produce noise that rocking arm and camshaft are not pulled normal wear, only have apparent in view rank, formation side just can produce abnormal voice, slight not pulling can produce noise.
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| CN 201010552584 CN102086810B (en) | 2010-11-21 | 2010-11-21 | Maintenance method for prolonging service life of engine |
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| CN 201010552584 CN102086810B (en) | 2010-11-21 | 2010-11-21 | Maintenance method for prolonging service life of engine |
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| CN102086810B true CN102086810B (en) | 2013-03-13 |
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| CN105240082A (en) * | 2015-10-31 | 2016-01-13 | 中国嘉陵工业股份有限公司（集团） | Motorcycle engine |
| 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 |
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| CN1405441A (en) * | 2001-08-06 | 2003-03-26 | 瓦特西拉瑞士股份有限公司 | Piston ring |
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| CN1249412C (en) * | 2000-12-01 | 2006-04-05 | 大发工业株式会社 | System for evaluating abnormal sound, sound recorder and apparatus for evaluating abnormal sound |
| JP3725066B2 (en) * | 2001-11-29 | 2005-12-07 | 本田技研工業株式会社 | Car undercarriage maintenance work cart |
| JP4528305B2 (en) * | 2003-11-12 | 2010-08-18 | ドナルドソン カンパニー，インコーポレイティド | Air filter with slide mount for filter element |
| US8168066B2 (en) * | 2006-08-08 | 2012-05-01 | Cummins Filtration Ip, Inc. | Quick-drain filter |
| CN101498257B (en) * | 2008-09-26 | 2011-01-12 | 庄景阳 | Fuel saving maintenance method for carburettor |
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| CN1405441A (en) * | 2001-08-06 | 2003-03-26 | 瓦特西拉瑞士股份有限公司 | Piston ring |
| CN200952430Y (en) * | 2006-05-01 | 2007-09-26 | 绵阳新晨动力机械有限公司 | An environment-friendly gasoline engine |
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