KR20030042407A - Engine oil level detection and reset function - Google Patents

Abstract

PURPOSE: An oil pan with vehicle engine oil sensing and initializing function is provided to improve reliability of level sensing. CONSTITUTION: A front sensing plate and a rear sensing plate are installed on ends of a plane diagonal of an oil pan sump. Sensing plate conductive level floats(39,40), a level conductive float contacting point(41), an insulating stopper(70) are installed in the sensing plate. The level conductive float contacting point is connected to a level sensing insulated coating wire(43). Sensing plate conductive initializing floats(49,50), and an initializing float contacting point(53) are mounted on an inner lower part of the sensing plate. An upper insulator(81) and a lower insulator(82) are installed on parts of both sides of the sensing plate protrusive in parallel. An initialization sensing insulated coating wire(52) and the level sensing insulated coating wire are connected to the upper insulator and the lower insulator. A breed hole(60) is formed on an upper part of the sensing plate. A connector is placed on an upper part of the sensing plate, and connected with a level sensing wire(42) and an initialization sensing wire(51).

Description

Automotive oil level detection and initialization function oil pan {omitted}

Engine oil level detection, which floats plastic float on the oil level, cannot be reliably signaled by unevenness and acceleration / deceleration of the road surface, eddy currents and scattering due to crankshaft rotation, and irregular inflow of blow-by gas. If you use only one part of the sensing area, it will cause a false signal if it is directed to one side of the oil. There is a manual reset method that resets the mileage, fuel usage, engine speed, oil viscosity, and engine running time.

In the automated case, the switch is mounted on the drain plug, and there is a risk of damage due to collision with the ground. About 70% of cars can see that the bottom of the oil pan or the drain plug is crushed by collision with the ground.

Therefore, the level measurement should generate a consistent and reliable signal even if the acceleration or deceleration, ramping, or unevenness of the road surface are caused by one side of the engine oil. The effects of vortex flow, scattering, blow-by gas inflow, etc., on the crankshaft rotation should also be minimized.

Manual reset by pressing the reset button should be excluded. By refraining from installing a switch on the drain plug, there should be no problem with the initialization function even when it collides with the ground. Mounting the device outside the bottom of the oil pan, which could possibly collide with the ground, is a safety issue. Installation inside the oil pan is preferred.

1 is a perspective schematic diagram of a vehicle oil level detection and initialization function oil pan according to the present invention.

Figure 2 is a cross-sectional view of the sensor tube of the engine oil level detection and initialization function oil fan of the present invention.

3 is a cross-sectional view of the engine oil normal level of the A-A line of FIG.

4 is a cross-sectional view of the replenishment level of the engine oil of the A-A line of FIG.

5 is a cross-sectional view of the initialization level when the engine oil of the A-A line of FIG. 1 is replaced.

Figure 6 is a block diagram of the electrical electronics of the vehicle oil level detection and initialization function oil fan according to the present invention.

<Description of the code | symbol about the principal part of drawing>

10: Automotive oil pan 50: Conducting rear sensing tube

20: Front sensor tube initialization float

30: rear detection tube 51: initialization detection line

39: front detection tube conductive level float 52: initialization detection insulation coating wire

40: rear sensing tube conductive level float 53: initialization float contact

41: level float contact 60: bleed hole

42: level detection line 70: insulated stopper

43: level sensing insulation coating wire 81: upper insulator

49: Initialize front sensor tube conductivity 82: Lower insulator

Float 90: Connectors

The front sensing tube 20 and the rear sensing tube 30 are installed at the diagonal ends of the plane of the sump of the oil pan 10 of the vehicle. Considering that the end surface of the oil level stick gauge is usually 5.5 to 6 cm from the bottom of the oil pan, a conductive level float 40, a level float contact 41, and an insulating stopper 70 are mounted inside the sensing tube.

The conductive initialization float 50 and the initialization float contact 53 are mounted on the lower portion of the inside of the detection tube.

As shown in cross section BB of FIG. 2 on both sides of the pipe, an upper insulator 81 is provided on the upper side and a lower insulator 82 on the lower side, and a level sensing insulation coating line 43 is provided on the upper insulator 81 and the lower insulator 82. Connect the initialization sensing insulation coating line 52.

The upper insulator 81 has a terminal of a sensing insulation coating line, a level sensing line 42 contacting the terminal, and a connector 90 to which the initialization sensing line 51 is connected. The upper part of the sensing tube has a bleed hole 60 so that oil and air in and out of the tube and the oil pan may flow in and out so that the float is not disturbed. 3 and when the engine oil is at a level as normal to the oil pan, the conductive level floats 39 and 40 and the conductive initialization floats 49 and 50 are applied to the level float contact 41 and the initialization float contact 53. It is not connected to the positive current and the inner surface of the tube, i.e. the bodywork minus. Thus no signal is generated. When the engine oil is reduced and the engine oil stick gauge end point, that is, the level at which the engine oil needs to be refilled, as shown in FIG. Make contact with the inner surface of the tube. Therefore, the level sensing insulation coating line 43, the level float contact 41, the front and rear sensing pipe conductive level floats 39 and 40, the sensing pipe, and the vehicle body from the level sensing wire 42 to which positive current is applied. Flows out. At this time, the front and rear sensing tubes are installed at the diagonal end of the plane of the oil pan sump. In case the engine oil is inclined to the front and rear, left and right or acceleration and deceleration, the signal is generated only when the front sensing tube 20 and the rear sensing tube 30 level float are simultaneously in contact with the level float contact. In order to prevent erroneous contact, engine oil replenishment alarm signal is output only when the ratio of constant contact time is constant or constant time. When the engine oil is replaced, the engine oil is close to the floor as shown in FIG. Front and rear sensing tube conductive initialization floats 49 and 50 are inclined while contacting the initialization sensing line 51, the initialization sensing insulation coating line 52, and the initialization float contact 53 to which a positive current is applied, and thus the inside of the sensing tube is inclined. Contact with cotton Therefore, the current is energized to the vehicle body and can be used as an initialization signal such as mileage, fuel usage, engine speed, oil viscosity, engine running time, etc., which are standard for engine oil replacement. In this case, the signal is generated only when the front and rear sensing tubes are in contact with each other continuously for a predetermined time, thereby increasing reliability and stability as an initialization signal.

Engine oil level detection is carried out inside the sensor tube, minimizing the effects of oil fluctuations due to unevenness of the road surface, vortex flow, scattering, and blow-by gas flow during crankshaft rotation. Two engine oil level detectors were installed at the diagonal end of the plane of the oil sump and signaled only when the floats touched simultaneously. Therefore, the oil level malfunction signal does not occur even when the road surface bumps, bumps during acceleration and deceleration, and when driving on roads inclined forward and backward or left and right.

Only when the front and rear sensor tube initialization floats contact the initialization float contacts at the same time can the initialization signal be generated. Therefore, a signal can be generated only when most of the oil in the oil pan has been spilled for oil change from the oil pan so that a malfunction signal is not generated.

The present invention can simultaneously solve the problem of reliability and easy initialization of the level detection, which is the most problematic in the engine oil replacement time and the level sensing device.

Claims (4)

Install the front and rear sensing tubes (20, 30) at the flat diagonal end of the oil pan sump, and the inside and rear sensing tubes, conductive level floats (39, 40), level conductive float contacts (41), and insulating stoppers (70). ) And the level conductive float contact is connected to the level sensing insulation coating 43; The lower part inside the sensing tube is equipped with front and rear sensing tube conductive initialization float (49, 50) and the initialization float contact 53; Upper and lower insulators 81 and lower insulators 82 are installed on upper and lower portions of the protruding portions parallel to both sides of the sensing tube, one side of the initial sensing insulation coating line 52, and the other side of the level insulation sensing coating line ( 43) to upper and lower insulators; A bleed hole 60 in the upper portion of the sensing tube; The oil pan of the engine oil level detection and initialization function, characterized in that consisting of a connector 90 connected to the level detection line 42, the initialization detection line 51 in the upper portion of the detection tube. 2. The oil fan of claim 1, wherein a signal is generated only when each float having the same function at the diagonal end of the plane of the oil sump simultaneously contacts the contact and the inner surface of the sensing tube. The oil pan of claim 1, wherein the sensing tube has a bleed hole. In the oil change time detection and level detection device, a sensor tube is installed in the oil pan and the conductive float is used to initialize the oil level detection and the oil mileage, fuel usage, engine speed, oil viscosity, and engine uptime, which are the criteria for oil change. A vehicle oil level detection and initialization function oil pan, characterized in that to generate an initialization signal.