CN1082609C - Oil supply device of two-stroke-cycle engine for vehicle - Google Patents
Oil supply device of two-stroke-cycle engine for vehicle Download PDFInfo
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- CN1082609C CN1082609C CN97121383A CN97121383A CN1082609C CN 1082609 C CN1082609 C CN 1082609C CN 97121383 A CN97121383 A CN 97121383A CN 97121383 A CN97121383 A CN 97121383A CN 1082609 C CN1082609 C CN 1082609C
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- discharge capacity
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- lubricant oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Control Of Transmission Device (AREA)
- General Details Of Gearings (AREA)
Abstract
An oil supply device of a two-stroke-cycle engine with a discharge inhibiting type automatic transmission for a scooter-type vehicle comprises an oil pump driven by a driving power of a two-stroke-cycle engine provided with an automatic transmission and operated so that a basic quantity of discharge increases in proportion to an engine speed, a discharge inhibiting unit which sets an inhibited quantity of discharge by reducing the basic quantity of discharge at a prescribed ratio, and a control unit for determining a substantial quantity of discharge in response to the engine speed by minutely switching over between the basic quantity of discharge and the inhibited quantity of discharge through continuous ON/OFF operation of the discharge inhibiting unit. The control unit includes an operation unit for operating an engine speed increasing ratio from an engine speed increment per unit time and a unit for executing a rapid acceleration oil supply control to control the discharge inhibiting unit so as to switch over the substantial quantity of discharge to the basic quantity of discharge when the engine speed increasing ratio is over a set value representing a rapid acceleration of the vehicle.
Description
The present invention relates to the oil feeding device of a kind of two journeys, in particular for the oil feeding device with the two-cycle engine of an automatic transmission of vehicle towards motor.
Have automatic transmission and be contained in vehicle usually, the two-cycle engine on the light motorcycle of a kind of compactness as shown in Figure 9 has the oil feeding device of lubricant oil supply type independently.This independent lubricant oil supply type oil feeding device can offer one air-fuel oil mixture passage (as a Carburetor) gradually with the lubricant oil that is stored in the lubricating oil tank, makes it mix the also inside of lubricating engine with this air-fuel oil mixture mutually with an appropriate ratio.
This oil feeding device has a lubricating pump, and this pump is discharged the lubricant oil in the motor one side lubricating oil tank.As for this lubricating pump, adopt the lubricating pump of a kind of rotating speed and the proportional type of discharge capacity, precedent ground increases this pump delivery Q along with the increase of the speed of a motor vehicle (engine speed N), shown in curve A among Fig. 7.It is the required maximum flow of each engine speed region that this output characteristics (curve A) is set at when the vehicle accelerator standard-sized sheet quickens.Here used " engine speed " its meaning is equivalent to " engine revolution number of times ".
But in service at the practical stability of vehicle, the required lubricant oil discharge capacity of motor is square curvilinerar figure shown in the curve B among a Fig. 7.Therefore, when using a kind of like this oil feeding device that only has a rotating speed and a proportional type lubricating pump of discharge capacity, the corresponding a certain amount of lubricant oil in zone is by overfeeding in steady running and between curve A and curve B, and this will cause increasing or shortcoming the white cigarette is emitted in exhaust such as lubricating oil consumption.
Therefore, developed the disproportionate type oil feeding device of a kind of rotating speed and discharge capacity, this device control one lubricant oil pump delivery makes it not only corresponding with engine speed N but also corresponding with the aperture of carburetor throttle.In this oil feeding device, lubricating pump links to each other with Carburetor so that the lubricant oil pump delivery increases along with the increase of carburetor throttle opening.Whether this oil feeding device can be discerned vehicle and quicken, thus by make the lubricant oil output characteristics carry out eliminating according to curve B above-mentioned unfavorable.
But,, therefore just must provide many cable elements, as conjunction cable, to finish the synchronization regulation of lubricating pump and Carburetor owing to lubricating pump must be linked to each other with Carburetor.This very loaded down with trivial details adjusting causes number of components and installation step sharply to increase, thereby makes the cost of production of vehicle increase.
In order to obtain the performance that a kind of approaching aforementioned rotating speed and the disproportionate type oil feeding device of discharge capacity are had with a kind of simple structure, can also adopt a kind of discharge capacity inhibition type oil feeding device, control the lubricant oil pump delivery by the output restraining device is set as an electromagnetic coil (solenoid valve) in it in a rotating speed and the proportional type lubricating pump of discharge capacity.
This output inhibition type oil feeding device has lubricant oil output characteristics shown in Figure 8.More particularly, after output restraining device (solenoid valve) was " closed ", a basic discharge capacity C1 was set, and after this output restraining device is " unpacked ", suppressed discharge capacity C2 and was set.This basic discharge capacity C1 is set at maximum aequum (corresponding with the curve A among Fig. 7) when throttle wide quickens, suppressing discharge capacity C2 is to reduce to increase and the resulting result of basic discharge capacity C1 of proportional increase with engine speed with a certain ratio.
By the switching manipulation (operation control device) that the output restraining device continues, basic discharge capacity C1 with suppress discharge capacity C2 conversion back and forth apace, thereby determined one with the actual displacement C3 of engine speed N coupling.According to this technology, can make actual displacement C3 near the required lubricants capacity B of motor in the vehicle stabilization running.
Although it is corresponding with the throttle opening of Carburetor to realize exporting control, but, this output inhibition type oil feeding device can overcome under the high load as the lubricant oil shortage in quickening fast, thereby avoid this deficiency, maximum demand for lubricating oil amount (curve A) when actual displacement C3 is set at the throttle wide operation and a certain intermediate value between the demand for lubricating oil amount (curve B) in the steady running.
The lubricants capacity of supplying with shows slightly excessively, therefore, emits white cigarette to consider that this is not disadvantageous from lubrication oil consumption and exhaust.But, for a two-cycle engine that has an automatic transmission, when quickening fast,, be arranged in fact usually near the engine speed of sending Maximum Torque-the highest output because quicken transshipment area if the excessive lubricant oil discharge capacity that reduces is easy to take place pull-cylinder phenomena.Therefore for the purpose of safety inevitably can luxus consumption lubricant oil.
Also can adopt a kind of output inhibition type oil feeding device simultaneously in addition, this closure position of installing inherent Carburetor is provided with a throttle opening sniffer as a sensor, to make output control corresponding with throttle opening (acceleration) (for example, disclosed a kind of oil feeding device among the Japanese patent laid-open 5-202723) by constantly surveying a throttle opening signal.But if equipment throttle opening sniffer, necessary linking route will cause one than the complicated apparatus structure and cost is increased.
An object of the present invention is basic deficiency and the defective that above-mentioned prior art ran into of eliminating, and provide a kind of oil feeding device that is used in the two-cycle engine on the vehicle, this device can prevent the oversupply of lubricant oil in the vehicle stabilization running, there is not wasting phenomena, and can in quickening fast, prevents the generation of pull-cylinder phenomena by the lubricant oil that q.s is provided.
According to the present invention by a kind of two-cycle engine that is used for is provided, the oil feeding device of the two-cycle engine that has an output inhibition type automatic transmission on vehicle such as the light motorcycle can reach this purpose and other purpose, and this oil feeding device comprises:
A lubricating pump, this pump has the drive force of the two-cycle engine of an automatic transmission by one, and handled so that a basic discharge capacity with the proportional increase of the increase face of engine speed;
The output restraining device, this device is set an inhibition discharge capacity by reduce basic discharge capacity with a requirement ratio; And
Control gear, this device are used for persistent switch operation by the output restraining device makes discharge capacity decide one and the corresponding actual displacement of engine speed in basic discharge capacity with suppressing between the discharge capacity constantly conversion back and forth,
This control gear comprises that an engine speed increasing amount that is used in the time per unit calculates the arithmetic unit of an engine speed increment rate, and is used to carry out one and quickens lubricant oil supply control fast and represent vehicle actual displacement to be transformed into during the setting value of acceleration the device of basic discharge capacity fast with control output restraining device so that surpass one in the engine speed increment rate.
Above, speech " engine speed " is identical with " engine revolution number of times " implication.
In most preferred embodiment, quicken the lubricant oil supply fast and be controlled at one and carry out in the engine speed range the engine speed of inlet from the engine speed before the transmission speed of automatic transmission to the high speed rotating district.Provide simultaneously and carried out the maximum control time of quickening lubricant oil supply control fast.
According to structure described above, (in stable the acceleration) output restraining device is by switching manipulation continuously in the steady running of vehicle, by reducing to decide an actual displacement with the basic discharge capacity of the corresponding lubricating pump of engine speed, thereby realize not have the lubricant oil supply of waste, and therefore face has prevented the oversupply of lubricant oil.
When vehicle quickened fast, the rotating speed increment rate of motor increased suddenly under the effect of the kickdown of automatic transmission etc.In this case, when the value of this increment rate is represented the setting value of the quick acceleration of vehicle above one, quicken lubricant oil supply control fast and begin to start, export restraining device and handled so that the actual displacement of lubricating pump is transformed into basic discharge capacity (maximum pump discharge).The lubricant oil of required q.s was provided for motor when motor quickened fast, had therefore prevented the generation of engine scuffing phenomenon.
Have again, according to the present invention, after quickening lubricant oil supply control beginning fast, when engine speed is reduced to the following time of engine speed that enters before the high velocity, quickening lubricant oil supply control fast ends at once, the lubricant oil pump delivery turns back to actual displacement again, and discharge capacity still remains on the generation of the situation of basic discharge capacity though this is with regard to having been avoided quickening to end, thereby has prevented the oversupply of lubricant oil.
After quick acceleration lubricant oil supply control beginning, in case surpassing, engine speed enters high rotating speed district rotating speed before, quicken lubricant oil supply control fast and promptly come to an end, the lubricant oil pump delivery turns back to actual displacement from basic discharge capacity.Since at this point, therefore the actual displacement of lubricating pump can provide the lubricant oil that conforms with the high speed rotating aequum constantly near basic discharge capacity.
Have again, according to the present invention, when engine speed before engine speed maintains transmission speed Ns and a certain value between the high velocity, as when repeating slowly to quicken, the supply of acceleration lubricant oil is ended after being controlled at maximum control time interval fast, and the lubricant oil pump delivery returns actual displacement from basic discharge capacity.As a result, the discharge capacity of lubricant oil never remains on basic discharge capacity (maximum pump discharge) except that quickening fast, thereby has prevented the lubricant oil oversupply.
From below in conjunction with more clearly understanding characteristic of the present invention and further feature the description of accompanying drawing.
In these accompanying drawings:
Fig. 1 is the left view of the two-cycle engine with an automatic transmission that is used for of oil feeding device of the present invention;
Fig. 2 is the schematic representation of the brief configuration and the lubricating pump brief configuration of oil feeding device;
Fig. 3 is the sectional view of lubricating pump, and its interior solenoid valve is in closed condition;
Fig. 4 is the sectional view of lubricating pump, and its interior solenoid valve is in open mode;
Fig. 5 A illustrates the chart that concerns between engine speed N and vehicle speed V, and Fig. 5 B illustrates the chart that concerns between engine speed N and lubricant oil delivery volume Q;
Fig. 6 is a flow chart of explaining the embodiment of the invention;
Fig. 7 illustrates the chart that concerns between engine speed and related domain lubricating pump discharge capacity commonly used;
Fig. 8 is the chart that the lubricant oil output characteristics of a discharge capacity inhibition type oil feeding device commonly used is shown; And
Fig. 9 is the side view of the typical light motorcycle that is applicable to of the present invention.
Describe one embodiment of the present of invention below with reference to accompanying drawings, Fig. 1 is the left view of the two-cycle engine that has an automatic transmission that is applicable to of oil feeding device of the present invention in these accompanying drawings.This motor 1 is especially applicable on a Lightweight Vehicles, and vehicle as shown in Figure 9, this vehicle itself are a kind of vehicles of known type, has a V-shape belt speed changer usually.
Two-cycle engine 1 is as a motor that is used for the compact type vehicle, to be contained in usually on the light motorcycle, its interior motor matrix 2 is fixed on front end, as shown in the figure, its part, and an automatic transmission 3 that is connected to motor matrix 2 left sides extends back.A trailing wheel 4 of this light motorcycle directly supports on the rear portion of automatic transmission 3.This automatic transmission 3 comprises a V-shape belt and a belt pulley (not shown), and it has a kind of like this structure, and it can change the power of motor matrix 2 and pass to trailing wheel 4 smoothly under each rotating speed.
Be provided with 5, one air-strainer 6 of a Carburetor at the top of motor matrix 2 and be contained in its rear portion.Be provided with a lubricating pump 7 near the Carburetor 5, this lubricating pump 7 is the proportional types of rotating speed and discharge capacity, and is directly driven by motor matrix 2, and the amount of the lubricant oil that this lubricating pump 7 is discharged increases with the increase of engine speed proportionally.A solenoid valve 8 is contained in its top.A lubricant oil delivery hose 9 is connected from lubricating pump 7 extensions and with Carburetor 5, and its path is provided with a safety check 10 that prevents that lubricant oil from flowing backwards.
Fig. 2 shows an oil feeding device 11 of the present invention, and this device 11 comprises lubricating pump 7.This oil feeding device 11 is independent lubricant oil supply types.Offer as the Carburetor 5 of one air-fuel oil mixture passage bit by bit by lubricating pump 7 and make itself and air-fuel oil mixture and the inside of mixing to come lubricating engine matrix 2 with a proper proportion mutually by being stored in lubricant oil in the lubricating oil tank (not shown).This oil feeding device 11 is still exported the inhibition type simultaneously, has the output restraining device of the discharge capacity that is used to control lubricating pump 7.
Except lubricating pump 7, this oil feeding device 11 comprises that also is contained on the lubricating pump 7 solenoid valve 8 as the output restraining device, control gear can detecting engine rotate (rotating speed) as a micro computer 12, one a rotation sensor 13 and the battery 14 as power supply.Micro computer 12 build in one be used to light a fire or CDI (capacitive discharge ignition) system of other similar work in.Rotation sensor 13 is surveyed the amounts of rotation of flywheel magnetoelectricity device 15 and the result that will survey imports micro computer 12, and this device 15 is directly connected to, on the bent axle as a motor matrix 2.Battery 14 is as the power supply of whole light motorcycle.
Lubricating pump 7 is provided with one and sucks path 16 and a discharge path 17, is provided with a rotating shaft 18 that is directly driven rotation by motor matrix 2 in the middle.This rotating shaft 18 is provided with a guiding valve 19, packs in the rotating shaft 18 along with this guiding valve 19 of rotation of rotating shaft 18 will suck lubricant oil in the path 16, and the lubricant oil of these loadings is discharged to discharge path 17 1 sides.
This oil feeding device 11 is provided with a bypass channel 21, this bypass channel 21 then becomes the U-shaped bending and links to each other with suction passage 16 from a part of side extending of rotating shaft 18, and this device 11 also is provided with a return flow line 22 and links to each other with discharge path 17 from bypass channel 21.The intermediate portion of bypass channel 21 is provided with bypass valve 23 and safety check 24 that is opened and closed by a solenoid valve 8, also is provided with a safety check 25 in return flow line 22.The valve opening pressure of this safety check 25 is set in a certain value higher than the cracking pressure of safety check 24.
When 2 work of motor matrix, the rotating shaft 18 of lubricating pump 7 is driven the rotation of doing as shown in Fig. 3 and 4, and when the part of guiding valve 19 was faced suction path 16, the lubricant oil that sucks in the path 16 entered rotating shaft 18 under the suction effect of guiding valve 19.When this part of guiding valve 19 during over against discharge path 17, a part of lubricant oil in the rotating shaft 18 are discharged into discharge path 17 under the release movement of guiding valve 19.After this, further rotate and this part of guiding valve 19 during over against bypass channel 21 when rotating shaft 18, residual lubricant oil are released to bypass channel 21 in the rotating shaft 18.
Since bypass valve 23 is closed when solenoid valve 8 disconnects as shown in Figure 3, the flow of lubricant that is released into bypass channel 21 from rotating shaft 18 flows into discharge path 17 through safety check 25 and return flow line 22.Therefore the flow of lubrication that sucks lubricating pump 7 is not discharged with being reduced, and at this point, discharge capacity becomes basic discharge capacity C1 (=measure big discharge capacity), and is as shown in Fig. 5 and Fig. 8, as described below.This basic discharge capacity C1 increases with the increase of engine speed N proportionally.
After solenoid valve 8 was connected, as shown in Figure 4, bypass valve 23 was opened, and leaked into the lubricant oil of bypass channel 21 from rotating shaft 18, through safety check 24 and bypass valve 23, was back to and sucked path 16.Therefore basic discharge capacity C1 is reduced by certain ratio, and its discharge capacity becomes and suppress discharge capacity C2, as shown in Figure 5 and Figure 8.Solenoid valve 8 conduct output restraining devices were used to reduce basic discharge capacity C1 and set an inhibition discharge capacity C2 this moment.
Fig. 5 A shows the relation between engine speed N and vehicle velocity V, and Fig. 5 B shows the relation between engine speed N and lubricant oil discharge capacity Q.In Fig. 5 A, curve X representative begins the stable acceleration carried out, the rapid acceleration that curve Y representative begins from low rotation speed area from zero starting point in stable the acceleration.Curve " low " and " height " expression engine speed N and respectively in the low-speed mode and the vehicle velocity V in the fast mode of automatic transmission 3 and be set in relation between the transmission speed of Ns.
In Fig. 5 B, curve C 1 (solenoid valve disconnection) and C2 (solenoid valve connection) represent the basic discharge capacity of lubricating pump 7 respectively and suppress discharge capacity, and curve B is represented two-cycle engine 1 required lubricants capacity in the steady running (the stable acceleration) of light motorcycle.
In the steady running (the curve X among Fig. 5 A) of light motorcycle, the solenoid valve 8 that the micro computer 12 of oil feeding device 11 is handled lubricating pump 7 by switch continuously make discharge capacity basic discharge capacity C1 with suppress to change rapidly between the discharge capacity C2, thereby determined one to conform with the required actual displacement C3 of engine speed N.Because this actual displacement C3 is near the demand for lubricating oil amount B in the steady running (the stable acceleration), so not waste of the lubricant oil of supplying with, thereby prevented the excessive supply of lubricant oil.
Establishment has one to quicken lubricant oil supply control program fast in micro computer 12.The lubricant oil that will offer motor matrix 2 by the basic discharge capacity C1 that makes actual displacement C3 be converted to lubricating pump 7 in the time of should quickening fast lubricant oil supply and be controlled at the quick acceleration of light motorcycle is set in maximum flow.
The quick engine speed range that quickens lubricant oil supply control of implementation comprises the engine speed from the engine speed N1 before the transmission speed Ns of automatic transmission 3 to the engine speed N2 that enters high-speed region.Also set one simultaneously and carried out the maximum control time T that quickens lubricant oil supply control fast.
To this control mode sequentially be described by certain step below.At first, in the stable acceleration of light motorcycle, shown in curve X among Fig. 5 A, if quicken fast at the P point, engine speed N will raise suddenly under the kickdown effect of automatic transmission 3 so.This trend correspondingly can be more remarkable when the throttle opening of Carburetor 5 is big.
As a result, just the moment of the engine speed N1 before engine speed reaches the transmission speed Ns of automatic transmission 3, micro computer 12 calculates engine speed increment rate dn/dt from time per unit dt intrinsic motivation incremental speed dn.This calculated value is quickened and imports in advance the setting value of this micro computer 12 fast compares with representative.When setting value that this calculated value quickens fast greater than representative, the solenoid valve 8 of always being handled (work control) by switch disconnects.
Subsequently, the discharge capacity of the S place lubricating pump 7 in Fig. 5 B is transformed into basic discharge capacity C1 from actual displacement C3.This basic discharge capacity C1 is light motorcycle throttle wide required maximum lubricants capacity when quickening.Therefore the lubricant oil of q.s is provided for two-cycle engine 1, thereby prevents the generation of piston scraping phenomenon.
When this acceleration further continues and after engine speed N played value N2, quickens lubricant oil supply control fast and finish (the some E in Fig. 5 B), the discharge capacity of lubricating pump 7 is got back to actual displacement C3 from basic discharge capacity C1 again.Because the actual displacement C3 of lubricating pump 7 puts its basic discharge capacity C1 no better than at this, be sustained so can satisfy the lubricated oil supplying of high speed rotating aequum.
During a certain value after engine speed N is reduced to rotational speed N 1 before the rotational speed N 2, quicken control break fast, the discharge capacity of lubricating pump 7 is got back to actual displacement C3 again.Therefore, whether in case quicken to end, the lubricant oil discharge capacity just can not remain on basic discharge capacity (maximum pump discharge) C1, thereby has prevented the excessive supply of lubricant oil.
Have again, carry out the maximum control time T that quickens lubricant oil supply control fast owing to set, therefore, when between the engine speed N value of maintaining N1 and N2, for example when repeating slowly to quicken, quicken to be controlled at the interval termination afterwards of maximum control time T fast, the discharge capacity of lubricating pump 7 is transformed into actual displacement C3 from basic discharge capacity C1 again.As a result, as not implementing quick acceleration, the discharge capacity of lubricant oil just never remains on basic discharge capacity C1 (maximum pump discharge), thereby has prevented the excessive supply of lubricant oil.
Now, quicken lubricant oil supply control fast with reference to flow chart description shown in Figure 6, each step is by symbol S1, S2 in this flow chart ... representative.
When this when beginning control, in step S1, read engine speed N earlier, afterwards, in step 2, debate not whether exceedance N1 of this engine speed N.When the result of step 2 was "Yes", program forwarded step 3 to, at this step calculation engine rotating speed increment rate dn/dt.In step 4, debate not other this engine speed increment rate dn/dt and whether surpass a setting value of acceleration fast of represent light motorcycle.When step S4 result was "Yes", program advanced to step S5, started in this step and quickened lubricant oil supply control fast.This moment, solenoid valve 8 is opened, and the discharge capacity of lubricating pump 7 is transformed into basic discharge capacity C1 from actual displacement C3.
After quickening lubricant oil supply control beginning fast, in step S6, debate other practical engine speeds N and whether setting between engine speed N1 and the N2.For example, when the speed of a motor vehicle of light motorcycle is quickening fast that lubricant oil supply control starts that the back increases and during engine speed N exceedance N2, maybe when quickening before engine speed N reaches rotational speed N 2, to end and to be reduced to a certain value that is lower than rotational speed N 1, the result of step S6 is a "No", and program is carried out step S8 to finish quick acceleration lubricant oil supply control.Under the situation, solenoid valve 8 is opened as shown in the figure, and the discharge capacity of lubricating pump 7 turns back to actual displacement C3 from basic discharge capacity C1.
Remain on when repeating slowly to quicken under the situation between N1 and the N2 step S6 "Yes" of will obtaining a result, program execution in step S7, so the maximum control time T of opening entry quickening fast lubricant oil supply control beginning back and engine speed N.In the time of the record end of maximum control time T, quicken lubricant oil supply control fast and ended that (step 8), solenoid valve 8 open so that the discharge capacity of lubricating pump 7 turns back to actual displacement C3 from basic discharge capacity C1.
Programming is that when the result of aforementioned step S2 and S4 was "No", program was returned step S1.Behind the execution in step S8, control sequence turns back to starting point again, and begins each step of repetition from step S1.
When this light motorcycle quickened fast, as implied above, the discharge capacity of lubricating pump 7 was transformed into basic discharge capacity C1, and this discharge capacity C1 is the maximum aequum of two-cycle engine 1, thereby the lubricant oil of q.s is provided.Therefore can prevent that two-cycle engine from quickening fast pull-cylinder phenomena taking place.
In the steady motion (the stable acceleration) of light motorcycle, the discharge capacity of lubricating pump 7 is set at and meets the required actual displacement C3 of two-cycle engine 1 rotation.Therefore the lubricant oil of appropriate amount can be provided to two-cycle engine 1.And can prevent that oversupply causes such as lubricant oil lubrication oil consumption from increasing and disadvantages such as white cigarette are emitted in exhaust.
Have, after quick acceleration finished or ended, the discharge capacity of lubricating pump 7 was returned actual displacement C3 from basic discharge capacity C1 at once again.Except quickening fast, never there is unnecessary lubricant oil to offer two-cycle engine 1, therefore can avoid the oversupply of lubricant oil.
In the oil feeding device 11 of present embodiment, when implementing to quicken lubricant oil supply control fast,, thereby make the discharge capacity of lubricating pump 7 be transformed into basic discharge capacity C1 from actual displacement C3 as the closed electromagnetic valve of the output restraining device of lubricating pump 7.But the present invention is not limited to this plants structure, can also make actual displacement C3 be transformed into (approaching) basic discharge capacity C1 through the correction stage of a solenoid valve 8 switching manipulations.
The bypass valve 23 of lubricating pump 7 can also be made simultaneously and can make discharge capacity after solenoid valve is opened by closed position, be transformed into basic discharge capacity C1 from actual displacement C3.And the output restraining device is not limited to solenoid valve 8, can also adopt device other any electricity or machinery.
As mentioned above, be used for of the present invention oil feeding device of a two-cycle engine in particular for the two-cycle engine that has an automatic transmission of vehicle, the control gear that is used to handle the output restraining device of lubricating pump is equipped with a program that is used for quickening fast control lubricant oil supply control, this program calculates engine speed increment rate dn/dt from time per unit dt intrinsic motivation incremental speed dn, and when this engine speed increment rate dn/dt that calculates surpassed the setting value of the quick acceleration of a sign vehicle, the output restraining device of lubricating pump is handled with the actual displacement C3 with lubricating pump was converted to basic discharge capacity C1.
According to this kind structure, the lubricant oil discharge capacity of lubricating pump in vehicle stabilization running (the stable acceleration), be set at one with the corresponding actual displacement C3 of engine speed N, therefore both economical lubricant oil is provided for motor, thereby can avoid the excessive supply of lubricant oil.On the other hand, the lubricant oil discharge capacity of lubricating pump is set at a basic discharge capacity C1 when vehicle quickens fast, and this basic discharge capacity is the required maximum pump discharge of motor.Therefore can provide the lubricant oil of q.s to prevent engine scuffing.Have again, will not link to each other with closure by lubricating pump, thereby reach a kind of very layout of compact oil feeding device.
At the oil feeding device of the present invention of the two-cycle engine that has an automatic transmission that is used for vehicle, the engine rotation scope of implementing aforementioned quick acceleration lubricant oil supply control comprises from the engine speed N1 before the transmission speed Ns of automatic transmission to engine rotation the engine speed N2 that enters after the high velocity.
After quick acceleration finishes or ended, quicken lubricant oil supply control fast and also end fast, and the lubricant oil pump delivery turns back to actual displacement from basic discharge capacity again.Except in quickening fast, the lubricant oil discharge capacity remains on basic discharge capacity (maximum pump discharge) never, thereby has avoided supplying too much lubricant oil.
Have, in the oil feeding device of the present invention on the two-cycle engine that has an automatic transmission of vehicle, the maximum control time T that implements acceleration lubricant oil supply control fast is set again.When repeatedly slowly quickening to make engine speed remain between rotational speed N 1 and the N2, supply is ended after being controlled at maximum control time T immediately as quick acceleration lubricant oil, and the lubricant oil pump delivery is transformed into actual displacement C3 from basic discharge capacity C1.As a result, except in quickening fast, the discharge capacity of lubricant oil always never remains on basic discharge capacity (maximum pump discharge), thereby has avoided the oversupply of lubricant oil.
It should be noted that the embodiment who the invention is not restricted to describe, under the prerequisite of not leaving appended claim book scope, can make other various modifications and become change.
Claims (2)
1. oil feeding device that is used for the two-cycle engine of vehicle, it comprises:
One by a lubricating pump of drive force that is provided with the two-cycle engine of an output inhibition type automatic transmission, and this pump is handled so that a basic discharge capacity increases with the increase of engine speed proportionally;
The output restraining device, this device is set an inhibition discharge capacity by reduce basic discharge capacity with a predetermined ratio; And
By described output restraining device continuously switching manipulation make discharge capacity basic discharge capacity with suppress between discharge capacity the control gear that conversion continuously comes the corresponding actual displacement of definite and engine speed;
Wherein said control gear comprises and is used for calculating the arithmetic unit of an engine speed increment rate from time per unit intrinsic motivation rotating speed increasing amount, and is used to carry out one and quickens lubricant oil supply control fast and make the lubricant oil pump delivery surpass one in the engine speed increment rate with control output restraining device represent a vehicle to be transformed into the device of described basic discharge capacity fast during the setting value of acceleration from described actual displacement;
The supply of described quick acceleration lubricant oil is controlled at a engine speed before the transmission speed of the set described automatic transmission of described motor and carries out in the engine speed range of the engine speed of ingress, high speed rotating district:
And provide one to carry out the maximum control time of quickening lubricant oil supply control fast.
2. oil feeding device as claimed in claim 1 is characterized in that: described vehicle is a kind of light motorcycle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP331191/96 | 1996-12-11 | ||
| JP33119196A JP3368778B2 (en) | 1996-12-11 | 1996-12-11 | Oil supply device for two-stroke engine with automatic transmission for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1184883A CN1184883A (en) | 1998-06-17 |
| CN1082609C true CN1082609C (en) | 2002-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97121383A Expired - Fee Related CN1082609C (en) | 1996-12-11 | 1997-09-20 | Oil supply device of two-stroke-cycle engine for vehicle |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP3368778B2 (en) |
| KR (1) | KR100301871B1 (en) |
| CN (1) | CN1082609C (en) |
| ES (1) | ES2147096B1 (en) |
| IT (1) | IT1295393B1 (en) |
| TW (1) | TW397895B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100878056B1 (en) * | 2007-09-28 | 2009-01-12 | 박주철 | 2 cycle engine of gasoline or engine oil decouple supply system |
| DE102010055387A1 (en) * | 2010-12-21 | 2012-06-21 | Solo Kleinmotoren Gmbh | Method and device for separate lubrication of an internal combustion engine |
| JP6109485B2 (en) * | 2012-03-16 | 2017-04-05 | 三菱重工業株式会社 | Cylinder lubrication device |
| DE102015105331B4 (en) * | 2015-04-08 | 2023-02-16 | Ujet S.A. | Electric Scooter |
| US20190211815A1 (en) * | 2018-01-08 | 2019-07-11 | Ge Oil & Gas Compression Systems, Llc | Bypass system for regulating lubrication of reciprocating machines |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0508486A1 (en) * | 1991-04-12 | 1992-10-14 | Yamaha Hatsudoki Kabushiki Kaisha | Method for lubricating a two-cycle internal combustion engine and lubricating oil supplying system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1331547C (en) * | 1988-08-01 | 1994-08-23 | Yukihiro Matsumoto | Valve operating system for internal combustion engine |
| BR9206175A (en) * | 1991-06-21 | 1995-11-14 | Orbital Eng Pty | Process and apparatus for measuring oil in a two-stroke internal combustion engine |
| US5339776A (en) * | 1993-08-30 | 1994-08-23 | Chrysler Corporation | Lubrication system with an oil bypass valve |
| GB2286017A (en) * | 1994-01-21 | 1995-08-02 | Concentric Pumps Ltd | Improvements relating to pumps |
| WO1995026461A1 (en) * | 1994-03-29 | 1995-10-05 | Orbital Engine Company (Australia) Pty. Limited | Pump control system |
-
1996
- 1996-12-11 JP JP33119196A patent/JP3368778B2/en not_active Expired - Fee Related
-
1997
- 1997-09-09 TW TW086113005A patent/TW397895B/en not_active IP Right Cessation
- 1997-09-19 ES ES009701971A patent/ES2147096B1/en not_active Expired - Fee Related
- 1997-09-19 KR KR1019970047828A patent/KR100301871B1/en not_active IP Right Cessation
- 1997-09-19 IT IT97RM000565A patent/IT1295393B1/en active IP Right Grant
- 1997-09-20 CN CN97121383A patent/CN1082609C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0508486A1 (en) * | 1991-04-12 | 1992-10-14 | Yamaha Hatsudoki Kabushiki Kaisha | Method for lubricating a two-cycle internal combustion engine and lubricating oil supplying system |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2147096B1 (en) | 2001-03-01 |
| CN1184883A (en) | 1998-06-17 |
| IT1295393B1 (en) | 1999-05-12 |
| KR100301871B1 (en) | 2001-11-22 |
| ITRM970565A1 (en) | 1999-03-19 |
| ES2147096A1 (en) | 2000-08-16 |
| KR19980063469A (en) | 1998-10-07 |
| JPH10169425A (en) | 1998-06-23 |
| JP3368778B2 (en) | 2003-01-20 |
| TW397895B (en) | 2000-07-11 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |