JPS62129512A - Lubricating oil exchange warning device for vehicle - Google Patents

Abstract

PURPOSE:To precisely warm a lubricating oil exchange time upon supplying a lubricating oil, by operating a supply inputting means and correcting to extend a remaining running distance until the lubricating oil is to be next exchanged. CONSTITUTION:A vehicle running distance is computed by an arithmetic unit 2 with use of data from a vehicle speed sensor 1 or the like. An attainable running distance till the next exchange of a lubricating oil is set upon exchanging the lubricating oil, and the actual running distance is subtracted from the attainable running distance to compute a remaining running distance, which is indicated by an indicating unit 3. In this case, when the supply of the lubricating oil is inputted by a supply inputting means 4, the remaining running distance is corrected to be extended by a correcting means 5. Therefore, exchange warning may be given at a precise time in consideration of the fact that the degradation of the lubricating oil is lessened by the supply of the oil Accordingly, the lubricating oil may be sufficiently used till the life.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lubricating oil change warning device for a vehicle that accurately warns when it is time to change lubricating oil.

(Prior Art) Lubricating oil used to lubricate moving parts such as a vehicle's engine and transmission deteriorates and needs to be replaced.

Conventionally, engine lubricating oil is required to be changed every certain distance traveled or every certain number of hours the vehicle is driven, in the instruction manual, and labels are posted in child-friendly places, but people often forget to change the engine lubricating oil. be. If lubricating oil is used beyond the allowable deterioration level, the lubrication effect will be affected, so it is important to warn when it is time to replace it.
The deterioration of lubricating oil is not determined only by the vehicle's mileage or driving time, but is also greatly affected by vehicle usage conditions such as road conditions, so it is not appropriate to issue a warning based solely on mileage or driving time.

Therefore, in Japanese Patent Application Laid-Open No. 59-43299, physical quantities of driving that affect the degree of deterioration of lubricating oil, such as lubricating oil temperature and engine rotation speed, in addition to vehicle mileage and driving time, are detected moment by moment, and the detection results are reported. A warning device has been proposed that adds up the lubricant and integrates it over time, and issues a warning to change the lubricating oil when the integrated result reaches a predetermined deterioration tolerance limit value.

On the other hand, in recent vehicles, a cathode ray tube is installed in a position visible from the driver's seat, and the screen of this cathode ray tube shows the residual status of maintenance items such as tires, engine oil, oil filter, etc. until the time when they need to be replaced. A so-called maintenance guide that displays mileage has been proposed.

By the way, lubricating oil gradually becomes dirty as it is used, so it may be replaced by knowing the limit of deterioration using the above-mentioned means, or it may be replenished mid-use as it decreases due to combustion in the cylinder during use. In such a case, the above-mentioned warning device warns of the replacement time based only on the integrated results of the physical quantities of the operation, so if the lubricant is refilled, the replacement warning will be issued earlier than the actual state of deterioration. In the case of maintenance guides, the standard mileage (distance that can be traveled until the next oil change) is set for the items that need maintenance at the time of oil change, and the actual mileage set is subtracted. Therefore, reduction in the degree of deterioration by oil replenishment is not taken into consideration, and a replacement warning may be issued earlier than the actual state of deterioration.

(Purpose and Structure of the Invention) The present invention has been made in consideration of the above-mentioned points. A replenishment means is provided which is operated when oil is replenished, and when the input means is operated, a correction is made to extend the remaining travel distance calculated and displayed according to the travel distance of the vehicle.

Figure 1 shows the overall configuration of a vehicle lubricating oil change warning device according to the present invention, in which the vehicle mileage is calculated in a calculation unit using data from a vehicle speed sensor, etc. The remaining mileage is calculated by subtracting the actual mileage from the distance that can be traveled before changing the lubricating oil.
The system is configured to display the information on the display section, and when it is input that the lubricating oil has been refilled by the replenishment means, the correction means is configured to correct the remaining travel distance to increase.

(Example) The present invention will be explained below based on the drawings.

FIG. 2 is a block diagram of a vehicle lubricating oil change warning device according to the present invention, in which 1 is a battery, 2 is an ignition switch, 3 is a vehicle speed sensor, and 4 is a microcomputer-configured calculation unit that calculates when to change the lubricating oil. , 5 is a display section that displays the distance that can be traveled until the lubricating oil is replaced. Reference numeral 6 denotes a replenishment switch that is operated when replenishing oil, and 7 is a replacement switch that is operated when changing oil.

Next, the operation of the lubricating oil replacement warning will be explained using the flowchart shown in FIG.

In addition to making initial settings when changing the oil, the microcomputer of the calculation unit 4 is also set in advance to the mileage (for example, 1500 ONm>) until the next oil change (F-1>
. When the driver gets in the car, turn the ignition key to ACC (
Accessories) position (F-L2>, the remaining mileage is displayed on the display 5 (for example, if you have driven 3000km after changing the oil,
=120X100Km>(F-3>.Next, if the user has changed the oil (F-4>turn on the change switch 7.By inputting this signal, the calculation unit 4 resets the remaining mileage X to 150X100Km. (F-5>. On the other hand, if only oil replenishment was performed (F-6
>The replenishment switch 6 is turned on, and the calculation unit performs replenishment correction of the remaining mileage (F-7), and the remaining mileage at that point is extended, and the display unit 5 displays, for example, 12o x 1.
00 candy color 125X 100 candy change.

Then turn the ignition key to 5TART (start)
When the engine is turned to the position (F-8), the vehicle speed V is detected by the vehicle speed sensor 3 (F-9), and the minute time △t
By multiplying by the product, the remaining mileage (F-10).The driver should check the remaining mileage X and change the oil at an appropriate point when X becomes close to 0.If 11> Give an oil change warning such as warning light, warning sound, voice advice, or blinking 10×1ooKm display (F-12).

By the way, when refilling oil, you can assume that 19 is refilled when the refill switch 5 is pressed once, and make a refill correction to reduce the degree of deterioration by 1 g, or measure the amount of oil refill accurately. You may also perform supplementary correction. In the case of the latter replenishment correction, 0.1.1 per refill switch! Assuming that it has been refilled, how many times should you press the refill switch according to the refill amount (refill amount (ρ
) ÷ 0.1).

Then the driver turns the ignition key ``(off)''
(F-13>), and when roughly turned to the ACC position (F-14>, return to step (F-2>) and repeat the above-mentioned series of steps.

(Effects of the Invention) As explained above, in the present invention, a replenishment switch that is turned on when lubricating oil is refilled and a replacement switch that is turned on when lubricating oil is replaced are provided. is configured to reset or correct the remaining mileage until lubricant replacement when these switches are turned on, so it takes into account that the degree of deterioration has decreased due to lubricant replenishment and issues a replacement warning at the correct time. be able to. As a result, the replacement period can be extended in proportion to the amount of replenishment of lubricating oil, and the lubricating oil can be used sufficiently until its service life.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a lubricating oil change warning device for a vehicle according to the present invention, FIG. 2 is a schematic diagram of an embodiment of a lubricating oil change warning device for a vehicle according to the present invention, and FIG. 2 is a flowchart illustrating a lubricating oil change warning operation performed by the illustrated device.

Claims (1)

[Claims] A lubricating oil change warning device for a vehicle that calculates and displays a remaining mileage until lubricating oil replacement according to the mileage of the vehicle includes a replenishment input means that is operated when lubricating oil is refilled, and a replenishment input means that is operated when the lubricant is refilled. A lubricating oil change warning device for a vehicle, comprising: a correction means for correcting the remaining travel distance so as to increase the remaining mileage when the remaining travel distance is exceeded.