KR200284835Y1 - Internal pressure identification device of engine crankcase - Google Patents

Abstract

The present invention relates to an internal pressure identification device of an engine crankcase, and more particularly, a breather passage communicating with an engine crankcase interior, and a breather case installed in the breather passage to collect impurities contained in the breather gas. In the internal pressure identification device of the engine crank compartment, a predetermined setting is provided at a predetermined position inside the breather passage to detect a breather gas pressure inside the breather passage, and a breather gas pressure detected by the detection means. After comparing with the pressure, it provides an internal pressure identification device of the engine crankcase, characterized in that it is provided with a pressure judging unit for lighting a warning light installed in the driver's seat when the pressure is greater than the set pressure.

Description

Internal pressure identification device of engine crankcase

The present invention relates to an internal pressure identification device of the engine crankcase, and more particularly, a breather case in which the breather gas is discharged by informing the driver of the driver's seat when the breather gas accumulated in the crankcase when the engine is higher than the reference pressure. To identify the internal pressure of the engine crankcase so that the engine can be protected by checking and cleaning at the optimum time.

In general, the breather gas is an exhaust gas leaked into the crank chamber 5 through a gap between the piston ring 3 and the cylinder wall 4 in the combustion chamber 2 of the engine 1, as shown in FIG. 1. The gas refers to a gas mixed with an oil component having high viscosity in the crank chamber 5 and other impurities.

Conventional apparatus for discharging such breather gas into the atmosphere includes a breather passage (6) extending from the upper part of the crank chamber (5) to the atmosphere, and an oil component contained in the breather gas (6) and the like. It consisted of a breather case 7 for collecting impurities and an outlet (8: Outlet) at the rear end of the breather passage 6.

When the engine 1 is operated, the breather gas generated in the crank chamber 5 flows out along the breather passage 6 communicating with the upper part of the crank chamber 5, and then passes through the breather case 7. The lamp was collected and released into the atmosphere through the outlet 8.

However, as the driving time of the engine 1 elapses, the amount of impurities or oil collected and accumulated inside the breather case 7 increases, and as the breather case 7 gradually occludes, Smooth discharge became difficult. As a result, the breather gas pressure in the crank chamber 5 is increased so that the high pressure breather gas flows in the crank chamber 5.

The high pressure breather gas adversely affects the sealing functions such as the gasket and oil seal of the engine, which not only shortens the engine life but also acts on the operating parts such as the piston and the crankshaft, thereby reducing engine efficiency. And many serious problems.

In order to prevent this, the breather case had to be regularly checked and replaced before the occlusion, but the timing of the breather case was unclear, and it was difficult for the driver to leave the driver's seat and discern the replacement by the naked eye. In addition, continuous attention of the driver was required to inspect and replace the breather case before the breather gas above the prescribed pressure was generated inside the crank chamber 4, and the process of removing, disassembling and assembling the breather case was accompanied. It had to be, causing considerable hassle.

Therefore, the object of the present invention is to inform the driver of the driver's seat the best time to check and clean the breather case, reducing the driver's hassle, and to protect the engine by preventing the overpressure caused by the breather gas in the engine crankcase It is to provide an internal pressure identification device of an engine crankcase.

1 is a schematic diagram of an internal combustion engine according to the prior art;

Figure 2 is a state of use of the internal pressure identification device of the engine crankcase according to the present invention,

3 is a circuit diagram of the internal pressure identification device according to the present invention

Explanation of symbols on the main parts of the drawings

1: engine 9: pressure detection means

2: combustion chamber 10: pressure determining unit

3: piston ring 11: warning light

4: cylinder wall

5: crankcase

6: breather passage

7: breather case

8: exit

An object of the present invention described above is to provide an internal pressure identification device for an engine crank chamber including a breather passage communicating with an inside of a crank chamber of an engine, and a breather case installed in the breather passage to collect impurities contained in the breather gas. Detecting means for detecting a breather gas pressure inside the breather passage and comparing the breather gas pressure detected by the detecting means with a predetermined setting pressure, It is achieved by providing an internal pressure identification device of the engine crankcase, characterized in that it comprises a pressure judging unit for lighting the warning light to be installed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a state diagram of the internal pressure identification device of the engine crank chamber according to the present invention, Figure 3 is a circuit diagram of the internal pressure identification device according to the present invention.

Prior to describing the present embodiment, the same reference numerals are assigned to the same elements as those of the prior art described with reference to FIG. 1 and the detailed description thereof will not be repeated.

As shown in FIG. 2, the internal pressure identification device of the engine crankcase according to the present embodiment has an outlet connected to an upper portion of the crank chamber 5 so as to communicate with the inside of the crank chamber 5 and the other end to the atmosphere. As the (8) is formed, a breather passage (6) for inducing and releasing breather gas generated in the crank chamber (5) to the atmosphere, and a breather case provided in the breather passage (6) to collect impurities in the breather gas. Applies to engines with a breather gas exhaust system composed of (7).

That is, the internal pressure identification device of the engine crankcase according to the present embodiment is installed at a predetermined position of the above-described breather passage 6, as shown in FIGS. 2 and 3, so that the breather gas pressure inside the breather passage 6 is present. Pressure detecting means (9) for detecting a pressure, a pressure determining portion (10) for comparing a breather gas pressure detected by the detecting means (9) with a predetermined reference pressure in the breather passage (6), and a driver's seat predetermined It is provided with a warning light (11) which is installed at a position and is turned on when the breather gas pressure detected by the pressure detecting means (9) described above is equal to or greater than a predetermined reference pressure.

The above-described pressure detecting means 9 is installed at a predetermined position of the breather passage 6, and a diaphragm for outputting an electrical signal only when the breather gas pressure is greater than or equal to a preset reference pressure in the breather passage 6 is used. The above-described pressure determination unit 10 is connected to the above-mentioned diaphragm, and a microcomputer (μ-com) or a comparator for comparing the breather gas pressure inside the breather passage 6 with a predetermined reference pressure is used. In (11), a buzzer or the like may be used to inform the driver of the inspection and cleaning time of the breather case 7 by hearing.

Hereinafter, describing the operation of the present invention, the breather gas generated in the crank chamber 5 by the engine driving is collected in the breather case 7 while impurities are collected along the breather passage 6 and then the outlet 8 is discharged. Is discharged through. At this time, when the pressure of the breather gas in the breather passage 6 is higher than the preset pressure by the pressure detecting means 9 such as a diaphragm installed at a predetermined position inside the breather passage 6, an electrical signal is output, thereby connecting to the diaphragm. The warning light 11 provided at the predetermined position of the driver's seat is turned on by the pressure determining section 10 such as a microcomputer.

On the other hand, when the driver recognizes that the breather gas pressure in the crank chamber 5 has exceeded a predetermined set pressure by turning on the warning light 11, the driver checks and replaces the breather case 7 in which impurities have accumulated before closing the breather. The overpressure of the engine crank chamber 5 due to the gas can be effectively prevented.

As described above, the internal pressure identification device of the engine crankcase according to the present invention detects that the breather gas pressure inside the engine crankcase exceeds a predetermined set pressure, and recognizes it to the driver of the driver's seat, thereby Make sure the timing of inspection and replacement is clear and prevent the closure of the breather case in advance. This prevents excessive increase in the internal pressure of the engine crankcase due to the breather gas and the problems caused by the breather gas, thereby improving engine life and improving efficiency.

Claims (1)

An internal pressure identification device of an engine crank chamber having a breather passage communicating with an inside of a crank chamber of an engine, and a breather case installed in the breather passage to collect impurities contained in the breather gas. Detecting means installed at a predetermined position inside the breather passage to detect a breather gas pressure inside the breather passage; And a pressure judging unit for comparing a breather gas pressure detected by said detecting means with a predetermined set pressure, and for illuminating a warning lamp provided in the driver's seat when the pressure exceeds the set pressure.