KR100405422B1 - Apparatus for preventing abrasion of crankshaft journal and method for controlling thereof - Google Patents

Abstract

The present invention relates to a crank journal wear protection device and a control method thereof, which can prevent wear of the crank journal at the initial startup of a diesel vehicle, improve startability, and prevent overheating of the engine during driving. 10) and an oil filter 20, the lubrication device for supplying and circulating the lubricating oil to the main oil gallery 31 of the engine block 30, between the oil filter 20 and the main oil gallery (31). An oil tank 100 which is connected by a first oil pipe line 110 and a second oil pipe line 120 branched from and provided with a piston 140 elastically maintained by an elastic body 130; An air tank (200) provided with a first check valve (210) and connected to the oil tank (100); A second check valve 150 provided in the first oil pipe passage 110; Preheating means (160) provided between the second check valve (150) and a conduit of the oil tank (100) to heat the conduit; It is composed of a control unit 300 for controlling the first check valve 210 and the second check valve 150, it is possible to prevent the wear phenomenon by reducing the oil viscosity at the beginning of the engine, and It is possible to improve the initial startability of the vehicle by being made quickly, and is an invention having the effect of preventing the engine from overheating during driving.

Description

Crank journal wear protection device and control method {Apparatus for preventing abrasion of crankshaft journal and method for controlling understand}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crank journal wear protection device and a control method thereof, and particularly to prevent wear of the crank journal during initial startup of a diesel vehicle, to improve startability, and to prevent overheating of the engine during driving. A wear protection device and a control method thereof.

The engine of the vehicle is injected with engine oil for cooling the engine while reducing the frictional resistance of the engine. The lubrication of the engine is caused by oil pumping and scattering of the main movement part.In general, the engine oil is collected in the oil pan under the engine and an oil pipe is formed in the crank journal and the main bearing by using the oil pump. When the driver starts, the oil pump rotates to send oil to the main part.

In order to improve the performance of the engine, it is desirable that the oil is preheated quickly and supplied to each main part. In particular, during the winter season, the viscosity of the oil is increased, so that smooth lubrication is not achieved. That is, before starting, the oil between the crank journal and the bearing flows down into the oil pan, so there is no oil septum, and thus, starting is not smoothly started at startup, and wear of the crank journal and the main bearing occurs. This lack of oil diaphragm at the start is an important cause of crank journal wear.

The present invention is to solve the above-mentioned shortcomings, the first object of the present invention is to start the engine at the beginning of the engine so that the lubrication can be made quickly by lowering the viscosity of the oil in the initial starting state, the viscosity of the oil is large, especially during winter It is to provide a means for preheating the oil to reduce the wear phenomenon occurring during initial startup.

Another object of the present invention is to provide a method for warming up an engine at an initial startup so that the engine can be operated at a suitable temperature at an early startup using the apparatus of the present invention.

It is a further object of the present invention to provide a method which can prevent the engine from overheating during driving by using the apparatus of the present invention.

1 is a view showing the configuration of a crank journal wear protection device of the present invention,

2 is a control method of the crank journal wear protection device according to the present invention

Flow chart showing an embodiment,

3 is another control method of the crank journal wear protection device according to the present invention

Flow chart showing an embodiment,

<Explanation of symbols for the main parts of the drawings>

10: oil pump 20: oil filter

30: engine block 100: oil tank

101: cooling fin 110: the first oil pipe

120: second oil pipe 130: elastic body

140: piston 150: second check valve

200: air tank 210: first check valve

The present invention comprises an oil pump and an oil filter, and a known lubrication device for circulating and supplying lubricating oil to the main oil gallery of the engine block, the oil supply means being provided branched between the oil filter and the main oil gallery. . The oil line corresponding to the output end of the oil supply means is provided with preheating means for preheating the oil line before starting, so that oil in a state in which the oil supply means is preheated by the controller before the vehicle is cranked is a main part of the engine. It is configured to supply. The oil supply means is further provided with a cooling means for cooling the oil when running so that when the engine is overheated, the cooled oil is supplied to the main part of the engine under the control of the controller.

1 is a view showing the configuration of a crank journal wear protection device of the present invention.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the crank journal wear protection device of the present invention includes an oil pump 10 and an oil filter 20 to supply lubricating oil to the main oil gallery 31 of the engine block 30. In the circulating lubrication device, the oil filter 20 and the main oil gallery 31 is branched between the first oil pipe 110 and the second oil pipe 120 is connected by an elastic body 130 An oil tank 100 having an elastically maintained piston 140; An air tank (200) provided with a first check valve (210) and connected to the oil tank (100); A second check valve 150 provided in the first oil pipe passage 110; Preheating means (160) provided between the second check valve (150) and a conduit of the oil tank (100) to heat the conduit; Characterized in that it comprises a control unit 300 for controlling the first check valve 210 and the second check valve 150.

The oil tank 100 is provided with a piston 140, the piston 140 is in the state maintained elastically by the elastic body 130, such as a coil spring in the oil tank (100).

The air tank 200 stores compressed air, and is provided with a first check valve 210 to be connected to the oil tank 100. When the first check valve 210 is opened, the compressed air is transferred into the oil tank 100, and the piston 140 is pressurized so that a reaction force acts on the elastic body 130. A second check valve 150 is provided in the output oil line of the oil tank 100, and when the second check valve 150 is opened while the first check valve 150 is opened, an air tank ( The oil is discharged from the oil tank 100 with a constant pressure by the action of the piston 140 pressurized by the compressed air of 200.

The first check valve 210 and the second check valve 150 are connected to the control unit 300 to be 'open' or 'closed' by the control of the control unit 300.

The preheating means 160 is provided on the output side oil pipe of the oil tank 100, which is a step before the second check valve 150, and a heating wire provided to surround the outside of the oil pipe, and the heating wire may be glowing. It can be configured as a current source wired so that The preheating means 160 is 'on / off' by the control unit 300.

Cooling fins 101 are further configured on the outer side of the oil tank 100, so that the cooled oil is stored in the oil tank 100 during the driving.

Reference numeral 30 in the drawings denotes an engine block, and 31 denotes a main oil gallery.

2 and 3 is a view showing a control method using a crank journal wear protection device of the present invention, Figure 2 is a flow chart showing an embodiment of a control method of the crank journal wear protection device according to the present invention, Figure 3 Is a flowchart showing an embodiment of a control method of a crank journal wear protection device according to the present invention.

The control method of the crank journal wear protection device of the present invention configured as described above is as follows.

As shown in Fig. 2, the first embodiment of the control method according to the present invention is as follows.

In the first step S10, when the ignition switch is in the 'ON' state (S11), the control unit 300 turns the preheating means 160 into the 'ON' state (S12) and the first check valve ( 210 and the step of opening the second check valve 150 (S13).

In the second step S20, the preheating means 160 is 'off' by the control unit 300, and the second step S20 of closing the first check valve 210 and the second check valve 150 is performed. It is composed of

In the first embodiment of the control method configured as described above, when the ignition switch is in the 'on' state, the preheating means is in the 'on' state by the control unit 300, and thus the oil in the output line of the oil tank 100 Preheated, and as the first check valve 210 and the second check valve 150 is opened, the preheated oil is supplied to each main part of the engine through the main oil gallery. Next, the preheating means 160 is 'off' and the first check valve 210 and the second check valve 150 are closed. Next, as the first check valve 210 and the second check valve 150 are closed, the piston 140 in the oil tank 100 is returned to its original position by the restoring force of the elastic body 130, and the ignition switch is As it is started, the oil tank 100 is filled with oil sent from the oil pump 10.

As such, by preheating the oil supplied to the main part of the engine at the start of the engine, the viscosity of the oil can be reduced to prevent wear of the crank journal and the bearing.

A second embodiment of the control method of the present invention is as follows.

The second embodiment of the control method of the present invention is made after the process of the first embodiment described above.

The third step (S30) is a step of measuring the water temperature by the water temperature sensor unit provided in the cooling water of the vehicle.

The fourth step (S40) is a step of comparing the water temperature measured by the water temperature sensor unit with a predetermined reference temperature.

In the fifth step S50, when the water temperature measured in the fourth step S40 is lower than the reference temperature, opening the second check valve 150 by the control unit 300 (S51) and the engine preheating plug. A step (S52) of shutting off the power of the furnace and a step (S53) of turning on the preheating means are 'on'.

The sixth step (S60) is a step (S61) of comparing the water temperature measured by the water temperature sensor unit with the reference temperature, and repeating the fifth step (S50) if the measured temperature is lower than the reference temperature, and than the reference temperature If high, the step of closing the first check valve 210 and the second check valve 150 (S62), supplying power to the engine preheating plug (S63), and 'off' the preheating means (S64) Is made of.

In the control method of the second embodiment configured as described above, the water temperature is measured by the water temperature sensor unit. When the measured water temperature is lower than the reference temperature, the first check valve may be controlled by the controller 300 to improve the engine performance. 210 and the second check valve 150 is opened, the preheated oil of the oil tank 100 is sent out as described above in the first embodiment to make the engine warm, the engine preheating plug by the controller 300 The power is cut off by manipulating the switching to control the power. This process is continued until the temperature of the water temperature exceeds the predetermined temperature, and when the temperature is above the reference temperature, the first check valve 210 and the second check valve 150 are closed, and the engine preheating plug is supplied with power. And the preheating means are 'off'.

As such, the engine can be secured at the initial stage of startup, and the engine can be operated at an appropriate temperature or higher, thereby improving vehicle performance.

As shown in FIG. 3, the third embodiment of the control method according to the present invention is as follows.

A third embodiment of the control method of the present invention is to prevent overheating of the engine during driving, and step 1-1 (R10) is a step of measuring the water temperature by the water temperature sensor unit in a vehicle driving state.

In step 2-1, if the water temperature measured by the water temperature sensor is lower than the reference temperature by comparing with the preset reference temperature, repeating step 1-1-1 (R10) (R21) and measured When the water temperature is higher than the reference temperature, the control unit 300 includes a second check step R22 for opening the first check valve 210 and the second check valve 150.

Step 3-1 (R30) is a step of determining whether the measured water temperature is lower than the set reference temperature (R31), and closing the first check valve 210 and the second check valve 150 (R32) It consists of.

The control method of the third embodiment configured as described above measures the water temperature of the coolant by the water temperature sensor during driving, and when the temperature exceeds the predetermined temperature, the oil in the cooled state of the oil tank 100 is discharged to cool the engine. will be. In the running state, as the cooling fins 101 are provided on the outside of the oil tank 100, the oil is maintained in the cooling state. This process is carried out until the water temperature is below the predetermined temperature. In the third embodiment, the preheating means is not operated.

With such a configuration, it is possible to prevent overheating of the engine during driving.

The present invention as described above can reduce the oil viscosity at the beginning of the start to prevent the wear of the crank journal and bearings, and also improve the initial startability of the vehicle as the engine warms up quickly, It is an invention having the effect of preventing the engine from overheating.

Claims (5)

delete In the lubrication device composed of an oil pump and an oil filter to supply and circulate lubricating oil to the main oil gallery of the engine block An oil tank connected by a first oil pipe path and a second oil pipe path branched between the oil filter and the main oil gallery, and having a piston elastically held by an elastic body; An air tank provided with a first check valve and connected to the oil tank; A second check valve provided in the first oil pipe passage; Preheating means provided between the second check valve and a conduit of the oil tank to heat the conduit; Consists of a control unit for controlling the first check valve and the second check valve, In particular, the crank journal wear protection device, characterized in that the cooling fin is further configured on the outside of the oil tank. An oil tank having a piston connected to the first oil pipe line and the second oil pipe line branched between the oil filter and the main oil gallery and elastically maintained by an elastic body, and a first check valve are provided. An air tank connected to the air tank, a second check valve provided in the first oil pipe line, a preheating means provided between the second check valve and the oil pipe line, and preheating means for heating the pipe line; A method for controlling a crank journal wear protection device comprising a control unit for controlling a check valve, A first step of turning on the preheating means by the control unit when the ignition switch is in an 'on' state and opening the first and second check valves; And a second step of 'off' the preheating means by a control unit and closing the first check valve and the second check valve to perform cranking. The method of claim 3, further comprising: a third step of measuring water temperature by the water temperature sensor unit after the second step; A fourth step of comparing the water temperature measured by the water temperature sensor unit with a preset reference temperature; If the water temperature measured in the fourth step is lower than the reference temperature, opening the second check valve by the control unit, shutting off the power to the engine preheating plug, and turning the preheating means into an 'on' state; If the water temperature measured by the water temperature sensor is lower than the reference temperature by comparing the reference temperature, the fifth step is repeated, and when the temperature is higher than the reference temperature, the first check valve and the second check valve are closed, and the power of the engine preheating plug The control method of the crank journal wear protection device, characterized in that it is configured in the sixth step of 'off' the preheating means, to ensure the engine's turbulence. In the method of controlling the crank journal wear protection device of claim 2, Step 1-1 to measure the water temperature by the water temperature sensor in the running state of the vehicle; If the water temperature measured by the water temperature sensor unit is lower than the reference temperature, and the temperature is lower than the reference temperature, the above steps 1-1 are repeated. If the temperature is higher than the reference temperature, the first and second check valves are controlled by the control unit. Step 2-1 to open the; When the measured water temperature is lower than the set reference temperature, it comprises a third step of closing the first check valve and the second check valve, A control method of a crank journal wear protection device, which can prevent overheating of the engine when driving.