JP3129574B2 - Lubricating oil supply device for two-cycle engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil supply system for a two-stroke engine, and more particularly, to an intermittent or lubricating system capable of supplying an appropriate amount of lubricating oil in accordance with an ever-changing operation state. The improvement of refueling methods.

[0002]

2. Description of the Related Art A two-stroke engine sometimes employs a lubricating oil supply system of a type in which lubricating oil is intermittently supplied to lubricated parts such as a piston sliding surface and a crank journal. In this method, the amount of oil supply is determined by the amount of oil supplied from the lubricating oil supply system and the oil supply interval. Generally, the oil supply amount is set to be larger as the load is larger, and the oil supply interval is set to be shorter as the engine rotation speed is higher.
However, this method has a problem in that white smoke is generated in a high-load, low-rotation region where a large amount of oil is fed at one time and a long oil feeding interval is long. On the other hand, if the amount of lubrication per operation is reduced to solve this problem, it is necessary to make the lubrication interval extremely short in order to secure the required lubrication amount in a high load and high speed range. There is a problem that it is difficult to follow the system.

[0003] In order to solve the above problem, the present applicant has
Lubrication in which the oil supply interval per operation is fixed to the minimum value in the normal operation range and the oil supply interval is variable, and in the high load and high speed range, the oil supply interval is fixed to the minimum value and the oil supply amount is variable. An apparatus has been proposed (see JP-A-2-204608).

[0004]

However, in the lubricating oil supply apparatus according to the above proposal, if the operating state changes between oil feedings, the change cannot be followed, so that the lubricating oil supply amount is not sufficient. Is likely to occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and is capable of supplying an appropriate amount of lubricating oil corresponding to the operating condition even when the operating condition changes every moment. As a result, it is an object of the present invention to provide a lubricating oil supply device for a two-stroke engine that can reduce lubricating oil consumption and reduce white smoke discharged from an exhaust pipe.

[0006]

According to the first aspect of the present invention, a lubricating oil is intermittently supplied to an engine by a lubricating oil supply system.
In the lubricating oil supply device for a cycle engine, a consumption calculating means for estimating and calculating the instantaneous lubricating oil consumption in the lubricated portion from the engine rotational speed and the load, and the instantaneous unit consumption calculated by the calculating means. An accumulating means for accumulating the oil; and an oil supply control means for performing a next lubricating oil supply when the accumulated consumption by the accumulating means reaches the oil supply amount per one time in the lubricating oil supply system. And

According to a second aspect of the present invention, the oil supply amount and the oil supply interval of the lubricating oil supply system are made variable, and the consumption calculating means, the integrating means, and the previous supply (at the start, end, or The relationship between the elapsed time from the intermediate time and the above-mentioned integrated consumption amount may be determined by the relationship between the oil supply amount of the lubricating oil supply system and the oil supply interval. It is characterized by having a refueling control means for performing the next lubricating oil supply at the time of reaching. Claim 3
Is characterized in that the lubricating oil supply system is of a direct lubrication type.

[0008]

According to the lubricating oil supply device of the present invention, the lubricating oil consumption changing every moment is calculated and integrated.
According to the invention, when the integrated consumption reaches the oil supply amount per lubrication oil supply system, and in the invention according to claim 2, the relationship between the elapsed time from the previous oil supply and the integrated consumption is determined. Since the next lubricating oil supply is performed each time a predetermined lubricating boundary line is reached, an appropriate amount of lubricating oil can be supplied to the lubricated portion without excess or deficiency, and the amount of lubricating oil consumption can be reduced. .

According to the third aspect of the present invention, the method of integrating the instantaneous consumption is applied to the case of a direct lubrication system. Therefore, the required amount of lubricating oil calculated with high accuracy can be surely and without waste. In this respect, the lubricating oil supply amount can be minimized. By the way, in the case of the indirect oil supply system that supplies the lubricating oil to the intake passage, even if the required supply amount is calculated with high accuracy, the lubricating oil may adhere to the intake passage etc. Although the supply is not possible and the effect is slightly reduced, such a problem does not occur in the case of the direct refueling system.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 and 3 are diagrams for explaining a lubricating oil supply device for a two-cycle diesel engine according to an embodiment (first embodiment) of the first aspect of the present invention. FIG. 1 is a schematic configuration diagram thereof, and FIG. FIG. 3 is a flowchart for explaining the refueling timing.

In FIG. 1, reference numeral 1 denotes a three-cylinder, two-cycle diesel engine, which comprises a crankcase 2, a cylinder block 3, and a cylinder head 4 which are stacked and fastened to each other, and a piston 5 disposed in the cylinder block 3 is connected to a connecting rod 6 by a connecting rod. The fuel injection valve 8 is connected to a crankshaft 7 disposed in the crankcase 2 and a fuel injection valve 8 is disposed in the cylinder head 4. A transmission 10 is connected to one end of the crankshaft 7 via a clutch 9. Reference numeral 11 denotes a rotation speed sensor that detects the engine rotation speed.

The engine 1 is provided with a lubricating oil supply device 12, which has a lubricating oil supply system 13 and a control device 14. The lubricating oil supply system 13 includes distribution type first and second lubricating oil pumps 15 and 16.
Is connected to the lubricating oil tank 17 via the introduction passage 20, and the discharge side of the first lubricating oil pump 15
The discharge side of the second lubricating oil pump 16 is connected to three journal bearings of the crankshaft 7 via the supply passages 18 by three second bearings.
The structure is such that the three piston sliding surfaces are connected to each other via the supply passage 19. A part of the lubricating oil supplied to the journal bearing part is guided to the large end of the connecting rod 6 through the crankshaft, and a part of the lubricating oil supplied to the piston sliding surface is atomized. It is scattered and guided to the small end of the connecting rod 6.

Here, the first and second lubricating oil pumps 15,
Reference numeral 16 denotes a pulse motor, for example, which is driven to rotate independently of the rotation of the engine, and the discharge (oiling) amount and discharge time interval in one cycle are variable. In this embodiment, the discharge amount in one cycle is Pq, It is fixed at Pr, and the ejection time intervals Tq and Tr are variably controlled by a method described later.

The control device 14 comprises a consumption calculating means 14.
a, an integrating means 14b, and a refueling control means 14c. Based on the engine speed signal a from the speed sensor 11, the load signal b from the accelerator opening sensor (not shown), and the engine running time integrated signal c, the consumption calculating means 14a performs running-in or running-in operation. The lubricating oil amount (unit required amount) q required per one revolution of the engine on the crank journal side and the lubrication required per one revolution of the engine on the piston sliding surface side based on whether the operation is completed and under the operating state. The oil amount (unit required amount) r is estimated and calculated. The load signal b can be obtained from the fuel injection amount from the fuel injection valve, the intake air amount, the throttle valve opening, or the like.

Here, the calculation of the unit required amount is performed by, for example, using a three-dimensional map of engine speed-load-lubricating oil required amount.
It is built in separately for the crank journal side and for the piston sliding surface side, and is performed by searching each of these maps or by using respective preset arithmetic expressions. In this case, the unit demands q and r are set to be larger as the load and the rotation speed increase. The r / q ratio s is set such that s in the high load region is smaller than s in the low load region.

In calculating the unit required amount q, different maps or arithmetic expressions are used during the running-in operation of the engine and after the running-in operation is completed. The reason for using this separate map is that while lubrication of the engine requires a relatively large amount of lubricating oil during running-in, the amount of lubricating oil required after running-in is significantly reduced This is because the total consumption of lubricating oil can be greatly reduced by employing the separate maps and the like.

The completion of the running-in operation can be determined by employing the following various methods. In this case, the completion of the break-in operation can be more accurately determined by employing a combination of the respective determination methods. For example, the engine speed, the engine operation time, the number of times the lubricating oil pump is discharged, the traveling distance, the number of times of brake operation, the number of times of clutch operation, the number of times the side stand is used, the fuel consumption, and the integrated value of the amount of lubricating oil consumption are set to predetermined reference values. It is determined that the break-in operation has been completed at the point in time when it exceeded. In addition, in addition to the method of directly integrating the lubricating oil flow rate, the lubricating oil consumption can be calculated by the number of times the level limit switch of the lubricating oil tank is continuously operated.

During the running-in operation, the progressing stage of the running-in operation may be determined, and a separate map may be adopted in accordance with the running-up stage of the running-in operation. More precise control.

The accumulating means 14b accumulates the calculated instantaneous required unit quantities q and r to obtain an integrated required amount Q (=
Σq) and R (= Σr). The lubrication control means 14c sets the respective pumps at the time when the integrated required lubricating oil amounts Q and R reach the discharge amounts Pq and Pr in one cycle of the first and second lubricating oil pumps 15 and 16, respectively. 15,16
Drive signals A and B are output to the pulse motors.

Next, the operation (including the control operation and the operation of each unit) of the apparatus of this embodiment will be described with reference to the flowchart shown in FIG. Since the same operation is performed on both the crank journal side and the piston sliding surface side,
Here, for convenience of explanation, only the crank journal side will be described. When the ignition key is turned on, initial settings are made in step S1 of FIG. 2, such as setting Σq (the integrated amount of lubricating oil calculated in step S8) to zero. Next, in step S2, the first lubricating oil pump 15 is driven,
The lubricating oil is delivered to the journal bearing portion of the crankshaft 7 once or several times. Next, in step S3, the engine is started.

Next, in step S 4, the control waits for the input of the engine speed signal 11 from the engine speed sensor 11 and the input of the load signal b from the throttle sensor. If the signals a and b are input, the process proceeds to step S5. In step S5, the consumption calculation means 14a obtains the engine speed and load from these input signals. Next, in step S6, a break-in operation completion determination is made. Various methods can be used to determine the completion of the running-in operation as described above.
In this embodiment, the determination is made based on whether or not the integrated value of the engine operation time exceeds 100 hours. If the integrated value is less than 100 hours, it is determined that the running-in operation is being performed, and the process proceeds to step S7
In step (1), a pre-break-in map is searched to find the required amount of lubricating oil according to the engine speed-load on the crank journal based on the engine speed and load. If the integrated value exceeds 100 hours, the lubricating oil demand is obtained by searching the post-run-in map in step S8.

In step S9, the map search retrieves the required amount of lubricating oil per unit rotation of the engine to be fed to the crank journal side (unit required amount).
qN _{- n} (n = 1, 2, 3,...) is obtained. Here, since it is the first time, q _1-n is calculated. Next, step S10
Then, q _Nn is integrated for each revolution of the engine. As a result, as shown in FIGS. 3A and 3B, the required amount q that changes every moment according to the operating state of the engine is calculated and integrated.

Next, in step S 11, the integrated required amount Q (= Σq _Nn ) obtained by integrating the unit required amount q _Nn is set to U
_The value obtained by adding _N (the required carry-over amount for the next time calculated in step S11 described later) is compared with the discharge amount Pq of the first lubricating oil pump 15 in one cycle. Here, N = 1 and U ₁ = 0. In step S11, Q
+ If U _N does not reach the discharge amount Pq becomes No judgment in step S11 the program returns to step S4,
Steps S4 to S11 are repeatedly performed. Also when Q + U _N exceeds or it reaches the discharge amount Pq, is Yes judgment in step S11,
The program moves to step S12. Step S1
In step 2, a drive signal is output to the first lubricating oil pump 15 (see FIG. 3A), whereby lubricating oil is supplied to the crank journal.

Next, in step S 13,
Q (= Σq_Nn) To U_NAnd the discharge amount P
The value obtained by subtracting q is U_{N + 1}(Requested amount for next time)
Good. Next, in step S14, N is incremented by N
+1. Thereafter, the program returns to step S4. By such processing, U in FIG._TwoAnd U_ThreeNo
U, U_NIf> 0, this U_NIs the next mileage required
Σq_NnIs added to For example, U_TwoIs Σq _2-nJoin
Calculated, U_ThreeIs Σq_3-nIs added to This allows luck
Proper amount of lubricating oil to be supplied according to the running state
Can be.

Here, in the low-load and low-speed range, since the unit required amounts q and r are set small, the time required to reach the discharge amounts Pq and Pr of the first and second lubricating oil pumps 15 and 16 is obtained. (See Tq in FIG. 3A) becomes longer, and the oil supply interval becomes longer. In the high-load and high-speed range, since the unit required amount is set large, the discharge amount Pq,
The time required to reach Pr is shortened, and the oil supply interval is shortened.

As described above, in the present embodiment, the required amount q that changes every moment according to the operating state of the engine is calculated and integrated, and when the integrated value Q reaches the discharge amount per one time Pq, Since the oil is supplied, an appropriate amount of lubricating oil can be supplied to the lubricated portion without excess or deficiency, the amount of lubricating oil consumed can be reduced, and as a result, the economy can be improved and the amount of white smoke can be reduced.
Further, in the present embodiment, when the required amount q is obtained, a separate map is searched depending on whether the engine is running in or after completion, so that the fuel consumption particularly after completion of the running-in operation can be significantly reduced. .

Further, in the present embodiment, since the lubricating oil is directly supplied to the lubricated portion, the lubricating oil can be reliably supplied by avoiding the problem that the lubricating oil adheres to the wall of the intake passage.
The required minimum supply amount can be obtained, and the lubricating oil consumption can be reduced from this point as well.

FIGS. 1 and 4 to 6 are views for explaining a lubricating oil supply apparatus for a two-sile engine according to an embodiment (second embodiment) of the second aspect of the present invention, and FIG. 1 is a schematic configuration. FIG. 4 is a flowchart, FIG. 5 (a), FIG. 6 (a).
Is a characteristic diagram showing a refueling boundary line, FIG. 5 (b), FIG.
(B) is a characteristic diagram showing a relationship between an oiling interval and an oiling amount.

Although the schematic configuration of the second embodiment is basically the same as that of the first embodiment, the refueling control means 14c has a function different from that of the first embodiment as described below. That is,
FIG. 5 (a) or FIG. 6 (a) shows a characteristic line indicating the relationship between the elapsed time T from the previous oil supply start, the end, or an intermediate time and the oil supply amount X per pump. When the oil supply boundary line A or B shown is reached, a control signal for feeding the amount of lubricating oil shown in the figure is output to the first and second lubricating oil pumps 15 and 16. That is, in the present embodiment, the oil supply interval and the oil supply amount are variably controlled.

FIG. 5A is a control map diagram in a low-load / low-speed range. In this case, an elapsed time T from the previous time is shown.
Is longer than the shortest time Tmin, and the integrated required amount Q is larger than the minimum oil supply amount Xmin. For example, as shown in FIG. 5B, when the accumulated request amount Q reaches Xmin when the elapsed time T reaches Ta, Tb, or Tmin,
Feed Xmin. If the accumulated demand Q exceeds Xmin before the elapsed time reaches Tmin, it indicates that Xd is fed when Tmin has been reached. Note that Xmax, Tma
x reaches Xmax before Tmin or Tma before Xmin.
It is set to never reach x. here,
The control map shown in FIG. 5A is suitable for setting the oiling interval as short as possible. Based on the point C in the figure, if the integrated request amount becomes smaller than Xmin, the oiling interval is set to b, b. a, and if it exceeds Xmin, increase the oil feed rate.

FIG. 6A is a control map diagram in a high-load / high-speed range. In this case, when the elapsed time T reaches the maximum time Tmax, or when the integrated demand Q becomes the maximum oil supply Xmax. Refuel when reached. For example, FIG.
As shown in (2), if the elapsed time T reaches the longest time Tmax before the accumulated required amount Q reaches the maximum oil supply amount Xmax, Xe is supplied at that time. The elapsed time T is the longest time T
If the accumulated required amount Q reaches the maximum oil supply amount Xmax before reaching the maximum, Xmax is supplied at that time. Here, FIG.
The control map of (a) is suitable for setting the oiling interval as long as possible. Based on the point g in the figure, if the integrated demand increases further than Xmin, the oiling interval is shortened. If it decreases, reduce the oil supply. The control map shown in FIG. 5A may be used even in a high-load / high-speed range.

The operation of the second embodiment will be described with reference to the flowchart of FIG. When the program starts, the control device 14 reads the engine speed and load, determines whether the running-in operation is completed or after completion, and searches either the pre-run-in map or the post-run-in map, as in the first embodiment. The unit request amount is calculated and integrated (steps S1 to S6), and the elapsed time T is calculated from the engine speed and integrated (step S1).
7).

Next, the control area determination map is set to either FIG. 5 (a) or FIG. 6 (a) according to the engine speed and the load.
Then, it is determined whether or not the refueling boundary line A or B has been reached based on the accumulated demand Q. If the line has not been reached, the process returns to step S1. If the line has been reached, the required oil supply amount X at that time is determined, and the first and second lubricating oil pumps 15, 16 are determined.
To output a driving signal to perform an oil feeding operation. After this,
The integrated consumption amount Q is reset to zero, or the oil supply amount is subtracted from the integrated value (steps S8 to S11).

The operation of the second embodiment will be described in more detail with reference to FIGS. 5, 6, and 7 to 11. FIG.
8 is a detailed diagram of the flowchart of the second embodiment, FIG. 9 is a conceptual diagram of the flowchart, FIG. 10 is a diagram for explaining refueling timing (a diagram corresponding to FIG. 5), and FIG. FIG. 7 (a diagram corresponding to FIG. 6). Since the same operation is performed on both the crank journal side and the piston sliding surface side, only the crank journal side will be described here for convenience of description.

When the ignition key is turned on,
In step S1 in FIG. 7, initial settings such as setting Σq (the required amount of lubricating oil integrated in step S16) to zero are made. Next, at step S2, a water temperature is detected by a water temperature sensor (not shown). Next, in step S3, a water temperature-oil feed amount map is searched, and in step S4, the total oil feed amount P before the engine is started is determined.

Next, in step S5, the maximum oil supply amount Pqmax per cycle of the first lubricating oil pump 15 is compared with the total oil supply amount P. If the total oil supply amount P is equal to or exceeds Pqmax, the process proceeds to step S6, and Pqmax + α is entered as the value of the total oil supply amount P. This means that the oil pump 15 is driven a plurality of times according to the value of the total oil supply amount P. In addition, the total oil supply amount P is Pqma
If it is smaller than x, the process proceeds to step S7, and Pqvari (the value of P at that time, that is, a variable) is entered as the value of the total oil supply amount P.

Next, in step S8, the first lubricating oil pump 15 is driven, and lubrication is performed to the crank journal portion based on the oil amount value P obtained in step S7.

Next, in step S9, the engine is started. Here, the start of the engine means that the starter motor is turned off, that is, the starter motor may be driven in any of the steps up to step S9.

Next, in step S10 (FIG. 8), the control waits for the input of the rotation signal a and the load signal b. When these signals are input, the process proceeds to step S11, and the engine speed and load are calculated (see 50 to 53 in FIG. 9).

In steps S12 to S14, it is determined whether the running-in operation is being performed or after completion, and the required oil amount Q (c
c / hour) is retrieved from the pre-break-in map or the post-break-in map, and in step S15, N
Lubricating oil demand per unit rotation of engine (unit demand) q _Nn (mm ³ / cycle) (n = 1, 2,
3,) (see 54, 55a, 55b, 56 in FIG. 9). Here, since it is the first time, q _1-n is calculated.
Next, in step S16, q _Nn
Are integrated to obtain an integrated required amount Σq _Nn (see 58 in FIG. 9).

In step S 17, the engine rotation cycle is integrated to calculate T = 60 · 積 算 (1 / engine rotation speed) (see 57 in FIG. 9). Next, in step S18, it is determined whether or not the refueling boundary line has been reached based on the time T and the integrated required amount Σq _Nn (see 60 in FIG. 9). That is, the control map is shown in FIG.
Is determined to have reached the Xmax ≧ Σq _Nn ≧ Xmin and lubrication boundary line when the Tmax ≧ T ≧ Tmin ... (1 ) If set (a), the addition was set to a control map in FIGS. 6 (a) In this case, it is determined that the condition has been reached when Σq _Nn ≧ Xmax or T ≧ Tmax (2). If it is determined that the refueling boundary line has been reached, the program proceeds to step S19 to determine the required refueling amount X, and then proceeds to step S20 to determine the first refueling amount X.
The lubricating oil pump 15 is driven to supply oil (61 to 61 in FIG. 9).
63). On the other hand, if the time has not reached at step S18, the program returns to step S10, and repeats the processing of steps S10 to S17.

Looking at this in the case of FIG. 10, it can be seen that the first to third refueling timings are performed when the above equation (1) is satisfied. In the case of FIG. 11, the first and second refueling timings are as described in (2) above.
It can be seen that it is performed when the expression is satisfied.

Next, in step S21, N is incremented and the process returns to step S10. In the examples of FIGS. 5 and 6, the times Tmax, Tmin
Although the case where the oil supply amounts Xmax and Xmin are constant is shown, the application of the present invention is not limited to this. For example, when the oil supply amount X can be represented by a function of time T, that is, when X = f (T) It may be. FIG. 12 shows an example in which this function f (T) is a linear function of T. In this case, if the determination formula is given by X ≧ AT + B, the oil is fed when the fuel supply boundary line X in FIG. 12 is reached.

As described above, in the second embodiment, the characteristic is obtained by calculating the consumption q that changes every moment according to the operating state of the engine, integrating the calculated consumption q, and plotting the integrated value Q and the elapsed time T. Oil is fed when the line reaches the boundary line A at low speed / low load or at the boundary line B at high speed / high load. An amount of lubricating oil can be supplied to the lubricated part.

In consideration of the possibility that the battery may be removed for maintenance or the like during the integration, the data of the integrated value is stored in a nonvolatile memory (for example, EE).
It is necessary to consider using a PROM) or incorporating a backup battery.

In the above embodiment, the case where the lubricating oil supply system includes the lubricating oil pump driven by the pulse motor has been described. However, in the present invention, any lubricating oil supply system having an electric discharge control function can be used. Alternatively, for example, a combination of a mechanical pump and a three-way solenoid valve, a variable stroke type solenoid pump, or the like can be employed.

In the above embodiment, the case of a two-cycle diesel engine has been described. However, the present invention can be applied to a normal spark-ignition two-cycle gasoline engine and a direct injection two-cycle gasoline engine.

[0048]

As described above, according to the lubricating oil supply apparatus for a two-stroke engine according to the present invention, the lubricating oil consumption changing every moment is calculated and integrated. At the point in time when the consumption amount reaches the oil supply amount per time of the lubricating oil supply system, and in the invention of claim 2, the relationship between the elapsed time from the previous oil supply and the accumulated consumption amount is set in advance. Since the oil is fed when it reaches the refueling boundary line, an appropriate amount of lubricating oil can be supplied to the lubricated parts without excess or shortage.
This has the effect of reducing lubricating oil consumption. Further, since the direct lubrication method is adopted in the invention of claim 3, the required amount of lubricating oil calculated with high accuracy can be reliably supplied to the lubricated portion without waste. It can be.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a lubricating oil supply device for a two-cycle engine according to first and second embodiments of the present invention.

FIG. 2 is a flowchart of the first embodiment.

FIG. 3 is a diagram for explaining refueling timing in the first embodiment.

FIG. 4 is a flowchart of the second embodiment.

FIG. 5 is an elapsed time-oil feed amount characteristic diagram for explaining the operation of the second embodiment.

FIG. 6 is an elapsed time-oil feed amount characteristic diagram for explaining the operation of the second embodiment.

FIG. 7 is a detailed view of a flowchart of the second embodiment.

FIG. 8 is a detailed view of a flowchart of the second embodiment.

FIG. 9 is a conceptual diagram of the flowchart shown in FIGS. 7 and 8;

FIG. 10 is a diagram (a diagram corresponding to FIG. 5) for explaining refueling timing in the second embodiment.

FIG. 11 is a diagram (a diagram corresponding to FIG. 6) for explaining refueling timing in the second embodiment.

FIG. 12 is an elapsed time-oil feed amount characteristic diagram for explaining an operation of a modification of the second embodiment.

[Explanation of symbols]

 Reference Signs List 1 engine 12 lubricating oil supply device 13 lubricating oil supply system 14a consumption calculating means 14b integrating means 14c refueling control means A, B refueling boundary line T elapsed time (oiling interval) q unit required amount Q integrated required amount X oiled amount

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Koki Maebashi 2500 Shinkai, Iwata-shi, Shizuoka Yamaha Motor Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) F01M 1/16

Claims (3)

(57) [Claims] 1. A lubricating oil supply device for a two-stroke engine that intermittently supplies lubricating oil to an engine by a lubricating oil supply system, and estimates an instantaneous amount of lubricating oil consumption in a lubricated portion from an engine speed and a load. Consumption calculation means for calculating;
An integrating means for integrating the instantaneous unit consumption calculated by the calculating means; and a next lubricating oil when the integrated consumption by the integrating means reaches the oil supply amount per one time from the lubricating oil supply system. A lubricating oil supply device for a two-stroke engine, comprising: an oil supply control means for performing supply. 2. A lubricating oil supply system for a two-stroke engine for intermittently supplying lubricating oil to an engine by a lubricating oil supply system, wherein the lubricating oil supply system has a variable oil supply amount and oil supply interval per time. A consumption calculating means for estimating and calculating the instantaneous lubricating oil consumption in the lubricated portion from the engine rotation speed and the load; an integrating means for integrating the instantaneous unit consumption calculated by the calculating means; When the relationship between the elapsed time from the supply and the integrated consumption reaches a refueling boundary line set in advance based on the relationship between the lubricating oil supply amount and the lubricating interval, the next lubricating oil A lubricating oil supply device for a two-stroke engine, comprising: an oil supply control means for performing supply. 3. The lubricating oil supply device for a two-stroke engine according to claim 1, wherein the lubricating oil supply system is of a direct lubrication type for directly supplying lubricated parts of the engine.