JP2636668B2 - Lubricator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricator suitably used for a marine engine or the like.

[0002]

2. Description of the Related Art In general, a special lubricator is attached to a marine engine or the like so that lubricating oil is supplied at a constant speed to various sliding parts such as a gap between a cylinder and a piston ring. ing. However, if the engine speed is changed by adjusting the angle of the fuel adjustment shaft of the engine by operating the throttle, the temperature of the cylinder and the piston will fluctuate. This affects the gap between the piston ring. For this reason, when the angle of the fuel adjustment shaft changes suddenly, a scheme has been devised to temporarily increase the supply amount of the lubricating oil to mitigate the adverse effect due to the temperature change.

[0003] That is, as this kind of conventional lubricator,
A lubricator main body for supplying lubricating oil to the engine, an increasing mechanism for increasing the amount of lubricating oil delivered from the lubricator main body, and load detecting means for detecting a process amount that changes in accordance with the load amount of the engine; When the difference between the detected process amount at the start of counting and the detected process amount at the end of counting in each unit time exceeds a set value, the increasing command for operating the increasing mechanism for a certain period of time and causing the lubricator body to increase the amount. There is known a device comprising:

[0004] Specifically, the angle of the fuel adjustment shaft of the engine is detected at a set start time and a count end time of a unit time, and the amount of change in the angle of the fuel adjustment shaft in the unit time is equal to the set value. When it exceeds, the lubricating oil supply amount from the lubricator body is increased for a certain period of time.

[0005]

By the way, even if the load of the engine fluctuates, if the load fluctuation is temporary, it does not lead to a change in the temperature of the engine.
However, in the prior art, the lubricating oil is wasted because the amount of lubrication from the lubricator body is increased as long as the angle of the fuel adjustment shaft corresponding to the load changes suddenly. There is a problem.

An object of the present invention is to provide a lubricator in which such a problem is solved and the amount of lubricating oil can be increased only when actually required.

[0007]

In order to achieve the above object, the present invention takes the following measures. That is, as shown in FIG. 1, the lubricator according to the present invention includes a lubricator main body 2 for supplying lubricating oil to the engine 1, and an increasing mechanism 3 for increasing the amount of lubricating oil delivered from the lubricator main body 2. A load detecting means 5 for detecting a process amount which changes in accordance with a load amount of the engine 1 and a comparison for calculating a comparison value by integrating or averaging the process amount detected by the load detecting means 5 per unit time. Value calculating means P, and increasing command means Q for operating the increasing mechanism 3 for a certain period of time to increase the amount when the difference between the comparison value calculated this time and the comparison value calculated last time exceeds a predetermined value. And characterized in that:

[0008] Examples of the process amount include a rotation angle of a fuel adjustment shaft of an engine, a throttle angle, an engine rotation speed, and the like.

[0009]

The temperature change of the engine 1 corresponds to a value obtained by subtracting the output of the engine 1 from the energy given to the engine 1. That is, the energy loss is related to the temperature rise and accumulation. In the case of the present invention, the comparison value obtained by integrating or averaging the detection process amount is made to correspond to the supplied integrated energy per unit time, and the difference between the current comparison value and the previous comparison value is calculated. Then, the change of the supplied energy per unit time is monitored, and when the difference exceeds a predetermined value, the amount of the lubricating oil is increased on the assumption that the engine temperature has changed.

Therefore, even if a temporary load change that does not accompany a temperature change of the engine 1 occurs, the difference between the comparison values does not exceed a predetermined value, so that the increase is not performed. . Therefore, it is possible to increase the amount of the lubricating oil only when the temperature of the engine 1 actually changes and adversely affects the gap between the cylinder and the piston, thereby effectively wasting the lubricating oil. Can be suppressed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

The lubricator includes an lubricator main body 2 for supplying lubricating oil to the engine 1, an increasing mechanism 3 for increasing the amount of lubricating oil delivered from the lubricator main body 2, and a fuel adjustment for the engine 1, which is a process amount. It comprises a potentiometer 5 as load detecting means for detecting the angle S of the shaft 4 and a microcomputer system 6 serving as a comparison value calculating means P and an increasing command means Q.

The lubricator main body 2 and the increasing mechanism 3 have the same configuration as that of a known conventional example. That is, the lubricator main body 2 is configured to be able to supply lubricating oil to each part of the engine 1 at a predetermined speed. The increasing mechanism 3 is provided with an actuator 7 such as an air cylinder for operating a lubricating amount adjusting valve in the lubricator main body 2 to increase a lubricating oil supply speed. An operating compressed air 9 is supplied from a source 10 via a solenoid valve 8. The drive voltage input terminal 8a of the solenoid valve 8 is connected to the power supply 12 via the contact 11a of the relay 11, and when the drive voltage is applied by closing the contact 11a, the solenoid valve 8 is opened and the actuator 7 is opened. Operate in the increasing direction.

The potentiometer 5 converts the rotation angle of the input shaft 5a into a change in the resistance value. The amplifier 13 amplifies the voltage change corresponding to the change in the resistance value into a required range, and the output of the amplifier 13 It is connected to the microcomputer system 6 via an A / D converter 14 for converting a voltage into a digital signal. The input shaft 5a of the potentiometer 5 includes a short arm 15, a link member 16,
It is mechanically connected to the fuel adjustment shaft 4 of the engine 1 via a long arm 17. When the angle of the fuel adjustment shaft 4 changes, the angle change amount is amplified, for example, by a factor of two to the input shaft 5a of the potentiometer via the long arm 17, the link member 16, and the short arm 15. The output of the potentiometer 5 is sequentially input to the microcomputer 6 as the process amount S.

The microcomputer system 6 includes a CP
U18, ROM19, RAM21, interface 2
The 2,23 like those by the data bus 24 of the normally formed by interconnecting, in the microcomputer system 6, the first setter 25 for setting the signal from the potentiometer 5, the unit time t ₁ described above Signals from
A signal from the second setting unit 26 for setting the increase duration t ₂ and a signal from the third setting unit 27 for setting the set value dsg for determining the increase are input. The ROM 19 stores a program for causing the microcomputer system 6 to function as the comparison value calculation means P and the increase command means Q.

FIG. 3 shows an outline of this program. That is, the routine shown in FIG. 3 is executed at intervals of 16 equal parts of the unit time t ₁ (for example, 10 seconds). When this routine is started, first, in step 1, a process amount S corresponding to the engine load is read. Thus, in this embodiment,
Sampling process variable S is stored, will be performed for each t _1/16 sec, as shown in FIG. 4, the measurement value S1~S16 of the potentiometer 5 is sequentially read RAM21 as a process quantity S at each time point It is being done. Then, in step 2, the mean value [Delta] S (comparison value) of the process variable S per unit time t ₁ is calculated.
This average value ΔS is
ΔS = (S1 + S2 + S3 + ... + S16) / 16
◎ is represented by the following formula.
◎ In this example, as shown in FIG. 5, t ₁ /
Fifteen groups for calculating the average value ΔS of the process amount S per unit time by shifting the time by 16 seconds, ie,
The 0th group, the 1st group, and the 2nd to 15th groups are set. Thus, in this specification,
The average value calculated this time in the 0th group is ΔS0b
And the previously calculated average value (calculated t ₁ seconds ago) of the same group is displayed as ΔS0a. Similarly, the first
The average value calculated this time in the group is displayed as ΔS1b, and the previous average value in the group is displayed as ΔS1a. Similarly, the average value calculated this time in the fifteenth group is displayed as ΔS15b, and the previous average value in the same group is displayed as ΔS15a. If executes the routine shown in FIG. 3 t _per / 16 seconds, in step 52,
The average value ΔSOb to ΔS15b of one of the groups can be calculated. Thus, the average value ΔSOb ~
After calculating ΔS15b, in step 53, a difference between the currently calculated average values ΔS0b to ΔS15b and the previously calculated average values ΔS0a to ΔS15a is calculated. As a result, the difference | ΔS0a
−ΔS0b | or | ΔS1a−ΔS1b | or.
| ΔS15a−ΔS15b | is calculated. .DELTA.S0a-.DELTA.S0b | or | .DELTA.S1a-.DELTA.S1b | or... | .DELTA.S15a-.DELTA.
S15b | is compared with a predetermined value dsg set in advance in the next step 54, and the difference is determined as a predetermined value dsg.
If it is greater than or equal to g, the process proceeds to step 55, and if it is less than the set value dsg, the current routine ends. When the routine proceeds to step 55, the amount increasing mechanism 3 is set so as to be operated only for the amount of time t ₂ (for example, 30 minutes) set in advance. Specifically, satisfies predetermined timer until the timer reaches t _2, it has a contact 11a of the relay 11 to actuate the bulking mechanism 3 in the closed state.

Next, the operation of this embodiment will be described in comparison with a conventional example. The operation of the present embodiment will be described focusing on a specific group, for example, only the 0th group, in order to avoid complication.

First, in a region A where the angle of the fuel adjustment shaft 4 rapidly increases, the unit time t _{1 in} the case of the conventional example.
At the time point te when the elapsed time has elapsed, the angle change amount can be compared with the set value (the same dsg as in the present embodiment), and the amount of lubricating oil is increased. On the other hand, in this embodiment, the unit time t ₁
At the time point tf after the lapse of time twice as long as the average value ΔS0a of the previous angle S and the average value ΔS0b of the current angle S |
ΔS0a−ΔS0b | is calculated, and if the value exceeds the set value, the amount of lubricating oil is increased. Even if the angle S of the fuel adjustment shaft 4 changes, the temperature of the engine 1 rises later, so that the increase control of this embodiment can increase the amount of lubricating oil at a more appropriate time. .

Next, in a region B in which the angle S of the fuel adjustment shaft 4 increases and decreases in small increments, in the case of the conventional example, if the valley and the peak of the angle increase and decrease coincide with the start and end of the unit time t ₁ , respectively. The lubricating oil is increased at time tg. On the other hand, in the case of the present embodiment, at time th, the difference | ΔS0a−ΔS0b | between the average value ΔS0a of the previous angle S and the average value ΔS0b of the current angle S is calculated, but the angle S is relatively small. When increasing or decreasing in small increments, the difference | ΔS0a−ΔS
0b | does not become so large. Therefore, the amount of the lubricating oil is not increased. When the angle S of the fuel adjustment shaft 4 changes relatively little by little, the temperature of the engine 1 does not change so much, so that it is not necessary to increase the amount of lubricating oil. Therefore, in the case of the conventional example, the amount of lubricating oil is increased due to a malfunction, but in the case of the present embodiment, such a malfunction does not occur, and waste of the lubricating oil can be prevented.

Further, in a region C where the angle S of the fuel adjusting shaft 4 temporarily changes largely in a certain direction, the conventional example does not consider the angle S at an intermediate point in the unit time, so that the lubricating oil is not taken into account. No increase is made. On the other hand, in the case of the present embodiment, if the change in the angle S is large, the average value ΔS0a changes accordingly. Bulking is performed. If the angle S of the fuel adjustment shaft 4 actually changes significantly, though temporarily, then the engine 1
Also fluctuates. Therefore, in the conventional case, the amount of the lubricating oil is not increased when necessary, but in the case of the present embodiment, it is possible to appropriately increase the amount of the lubricating oil.

In a region D where the angle S of the fuel adjustment shaft 4 decreases rapidly, the unit time t
At time tj when ₁ has elapsed, the angle change amount can be compared with the set value, and the amount of lubricating oil is increased. Meanwhile, when those of the present embodiment, 2 times the unit time t ₁ has elapsed t
At k, the difference | ΔS0a−ΔS0b | between the average value ΔS0a of the previous angle S and the average value ΔS0b of the current angle S is calculated, and if the value exceeds the set value, the amount of lubricating oil is increased.

As described above, according to the present embodiment, it is possible to increase the amount of lubricating oil at a more appropriate time than in the conventional example, and to effectively reduce waste of lubricating oil and insufficient lubricating oil. It can be suppressed. In particular, in this embodiment, the control explained based on FIG.
₁ is not per elapse, to be done for each t _1/16, thereby enabling more fine-grained suitable lubricant increasing control.

Note that the process amount is not limited to the angle of the fuel adjustment shaft, but is, for example, an amount such as a throttle angle or an engine speed that is proportional to a load of the engine with a certain function. If it is, another thing may be used.

The comparison value is not limited to the average value, and may be, for example, an integrated value of a continuously changing process amount.

Further, in the above embodiment, the comparison value is calculated by integrating or averaging the process amount for each unit time, and the difference between the comparison value calculated this time and the comparison value calculated last time is a predetermined value. A case has been described in which a plurality of control groups for judging whether or not the number has exceeded the threshold value are set, and the unit time measurement start time of each group is spelled by a fixed time. However, the present invention is not necessarily limited to this. Instead, various modifications can be made without departing from the spirit of the present invention.

[0026]

As described above in detail, according to the present invention, the comparison value obtained by integrating or averaging the detection process amount is calculated as follows.
By calculating the difference between the current comparison value and the previous comparison value in accordance with the integrated supply energy per unit time, the change in the supply energy per unit time is monitored, and the difference exceeds a predetermined value. In such a case, the amount of lubricating oil is increased by assuming that the engine temperature has changed, so that it is possible to appropriately control the increase in lubricating oil in situations where lubricating oil is actually required, and to waste lubricating oil. And lubricating oil shortage can be effectively suppressed or prevented.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the configuration of the present invention.

FIG. 2 is a schematic structural explanatory view showing one embodiment of the present invention.

FIG. 3 is a flowchart for explaining control contents of the embodiment.

FIG. 4 is an explanatory diagram for explaining a sampling state of the embodiment.

FIG. 5 is an explanatory diagram for explaining a storage state of a comparison value in the embodiment.

FIG. 6 is an operation explanatory view of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Engine 2 ... Lubricator main body 3 ... Increasing mechanism 4 ... Fuel adjustment shaft 5 ... Load detecting means P ... Comparison value calculating means Q ... Increasing command means

Claims (1)

(57) [Claims] An lubricator main body for supplying lubricating oil to an engine, an increasing mechanism for increasing the amount of lubricating oil delivered from the lubricator main body, and detecting a process amount that changes according to an engine load. A load detection unit, a comparison value calculation unit that integrates or averages a detection process amount by the load detection unit for each unit time to calculate a comparison value, and a comparison value calculated this time and a comparison value calculated last time. A lubricating device comprising: a lubricating oil increasing means for operating the increasing mechanism for a predetermined time to increase the amount of lubricating oil when the difference exceeds a predetermined value.