JPH0722007U - Engine automatic lubricator - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide an automatic fueling device for an engine that can control a solenoid valve and an alarm device even with a sensor having a small current capacity. [Arrangement] An oil passage 5 communicating with an oil pan 2 from an auxiliary oil tank 6 through an opening / closing valve 7 is provided, and a high level sensor 19a and a low level sensor 1 provided in the oil pan 2 are provided.
In an engine automatic oiling apparatus provided with a control device 8 for opening and closing the opening / closing valve 7 by a signal from 9b, a high level detecting circuit 22 for receiving and outputting a signal from a high level sensor 19a and its high level detecting circuit 22. An on-off valve drive circuit 23 that opens and closes the on-off valve 7 in response to a signal from the low level detection circuit 26, a low level detection circuit 26 that outputs a signal from the low level sensor 19b, and a signal from the low level detection circuit 26 to issue an alarm and display. An alarm display circuit 27 and a power supply circuit 30 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to an automatic oil supply device for an engine, which always keeps an oil in an oil pan of the engine at an appropriate level.

[0002]

[Prior art]

 When the engine oil level falls below the specified position, the oil level sensor operates and opens the solenoid valve to replenish the oil from the auxiliary oil tank.When the engine reaches the specified level, the sensor operates and closes the solenoid valve, causing the oil level to rise. There is known a technique in which an oil level sensor is activated to issue an alarm when the lower limit is reached (see, for example, Japanese Utility Model Laid-Open No. 56-173705 and Japanese Utility Model Laid-Open No. 60-16723).

[0003]

[Problems to be solved by the device]

 However, some oil level sensors have a small current capacity and cannot carry large currents, so the on-off valve and buzzer cannot be controlled directly.

Therefore, an object of the present invention is to provide an automatic fueling device for an engine that can control a solenoid valve and an alarm device even with a sensor having a small current capacity.

[0005]

[Means for Solving the Problems]

 According to the present invention, a high-level oil level detection device that outputs a signal when the oil level reaches a high level in a compartment partitioned from an oil pan, and a low level that outputs a signal when the oil level falls below a low level An oil passage is provided to connect the auxiliary oil tank to the compartment via an on-off valve, and a drive means for opening and closing the on-off valve is provided on the on-off valve. A high level detection circuit that communicates with the pan and above and below the oil level, and outputs an off signal when the signal from the high level oil level detection device disappears, and an off signal from the high level detection circuit. In response to this, the on-off valve drive circuit that opens the on-off valve, the low-level detection circuit that outputs the ON signal from the low-level oil level detection device, and the alarm that issues and displays an alarm with the signal from the low-level detection circuit Display times It is provided a power supply circuit with.

[0006]

[Action]

 In the automatic engine lubrication system configured as described above, when the level goes below the high level, the high level detection circuit sends a signal to the open / close valve drive circuit by opening the electromagnetic open / close valve to open the oil from the auxiliary tank. Is replenished.

Further, when the oil in the auxiliary tank runs out and the oil level in the oil pan becomes lower than the low level, the low level detection circuit sends a signal to the alarm display circuit to issue an alarm in response to the signal from the low level sensor. Since the alarm display circuit has a latch circuit, the alarm continues until it is released.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, the oil pan 2 of the engine 1 is provided with a partitioned compartment 13.

Further, the compartment 13 is connected from the downstream of the oil filter 20 to the connection port 15 on the upper part of the oil surface 3 by the oil circuit 23, and the damper chamber 14, the ventilation port 12 and the communication port 11 provided adjacent to each other. It is communicated with.

The auxiliary tank 6 is connected to the compartment 13 by an oil circuit 5 via an electromagnetic opening / closing valve 7.

A reed switch 3 that constitutes a high level sensor 19a and a low level sensor 19b, which will be described later, is housed inside the compartment 13. The reed switch 3 has an upper limit stopper 17 and a lower limit stopper 18. , Composed of adjacent pipes that penetrate the magnetism. A high level sensor 19a and a low level sensor 19b having a float 16 with a magnet are attached to the outer circumference thereof.

Further, referring to FIG. 2, the high level sensor 19a is connected to the opening / closing valve drive circuit 23 via a terminal plate 21 and a high level detection circuit 22 composed of a transistor and a relay.

The low level sensor 19b is connected through a terminal plate 25 to a low level detection circuit 26 composed of a transistor and a relay, and the low level detection circuit 26 is composed of an IC and has an alarm display circuit 27 having a latch circuit. It is connected to the buzzer 28 and the light emitting diode 29 via.

Each of them is connected to the power supply circuit 30.

Therefore, when the oil level of the oil pan goes down below the high level, the high level sensor 19a is turned off, and the high level detection circuit 22 receives the signal and opens the open / close valve 24 via the open / close valve drive circuit 23. Therefore, the oil is replenished from the auxiliary tank 6, and when it reaches a high level, the high level detection circuit 22 closes the open / close valve by the ON signal of the high level sensor 19a.

When the auxiliary tank 6 becomes empty and the oil level below the low level is reached, the low level sensor 19b sends an ON signal to the low level detection circuit 26, and the low level detection circuit 26 turns on the display circuit. Then, the buzzer 28 and the light emitting diode 29 are turned on. Then, the alarm continues until the reset switch is turned on by the latch circuit.

[0018]

[Effect of device]

 Since the present invention is configured as described above, the engine oil can be maintained at an appropriate level for a long time, and a warning is issued when the oil in the auxiliary tank is exhausted. It will be maintenance-free if it is used for power generation equipment on remote islands.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an automatic engine oiling apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram of the control device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Engine 2 ... Oil pan 3 ... Reed switch 5 ... Oil circuit 6 ... Auxiliary tank 7 ... Electromagnetic on-off valve 8 ... Control device 13 ... Compartment 19a ... High level sensor 19b ... Low level sensor 22 ... High level detection circuit 23 ... Open / close valve drive circuit 26 ... Low level detection circuit 27 ... Alarm display circuit

Claims (1)

[Scope of utility model registration request] 1. A high level oil level detecting device which outputs a signal when the oil level reaches a high level in a compartment partitioned from an oil pan, and a low level oil level which outputs a signal when the oil level falls below a low level. A detection device, an oil passage communicating from the auxiliary oil tank to the compartment via an opening / closing valve, and a drive means for opening / closing the opening / closing valve is provided in the opening / closing valve. A high level detection circuit that communicates with each other above and below the surface, and that outputs an off signal when there is no signal from the high level oil level detection device;
The open / close valve drive circuit that opens the open / close valve in response to the OFF signal from the high level detection circuit, the low level detection circuit that outputs the ON signal from the low level oil level detection device, and the low level detection circuit An automatic fueling device for an engine, comprising an alarm display circuit for issuing an alarm by a signal and displaying the alarm and a power supply circuit.