JPH0639895B2 - Lubricant replacement warning device for vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicular lubricant oil replacement warning device that provides an accurate warning of the time of lubricating oil replacement.

(Prior Art) Lubricating oil used for lubricating moving parts such as a vehicle engine and a transmission is deteriorated and needs to be replaced.

In the past, the engine lubricating oil was changed in the instruction manual so that it was carried out at a certain mileage of the vehicle or at a certain operating time, and a label was put on a place where it was easy to see, and it was easy to forget. If lubricating oil is used beyond the allowable deterioration level, it will affect the lubrication function.
It is important to give a warning about the replacement time, but deterioration of lubricating oil is not determined only by the mileage and driving time of the vehicle, but it is greatly affected by the usage condition of the vehicle such as road conditions, so It is not appropriate to warn only based on distance or driving time.

Therefore, in Japanese Patent Laid-Open No. 59-43299, the physical quantity of the operation that affects the deterioration degree of the lubricating oil such as the temperature of the lubricating oil and the number of revolutions of the engine in addition to the running distance and the operating time of the vehicle is detected momentarily, and the detection result is obtained. A warning device is proposed in which the addition is performed and the results are integrated over time, and a warning for lubricating oil replacement is issued when the result of the integration reaches a predetermined deterioration allowable 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 items such as tires, engine oil, and oil filter that need to be maintained remain on the screen of the cathode ray tube until the time when it is necessary to replace them. A so-called maintenance guide that displays the traveled distance has been proposed.

By the way, since the lubricating oil gradually becomes dirty as it is used, it may be replaced by knowing the limit of deterioration by the above-mentioned means, or it may be replenished on the way because it decreases due to combustion in the cylinder during use. In such a case, the above warning device warns the replacement time based only on the integrated result of the physical quantity of the operation, so if the lubricating oil is replenished, the replacement warning may be issued earlier than the actual deterioration state. However, in the case of the maintenance guide, the standard travel distance (travelable distance until the next oil change) is set for the items to be maintained when changing oil, and the set actual travel distance is subtracted. Therefore, the reduction of the deterioration degree due to the oil replenishment is not considered, and the replacement warning may be issued earlier than the actual deterioration state.

(Object and Structure of the Invention) The present invention has been made in view of the above points, and an object thereof is to accurately give a warning of the replacement time of the lubricating oil, and in order to achieve this object, the lubricating oil is replenished. When the input means is operated, supplementary input means is provided, and when the input means is operated, correction is performed to extend the remaining travel distance calculated and displayed according to the travel distance of the vehicle.

FIG. 1 is an overall configuration diagram of a vehicular lubricating oil replacement warning device according to the present invention. The mileage of a vehicle is calculated in a calculation section using data from a vehicle speed sensor and the like. Calculate the remaining mileage by subtracting the actual mileage from the mileage that can be reached by replacing the lubricating oil
Although it is configured to be displayed on the display unit, when it is input by the replenishment input means that the replenishment of the lubricating oil is input, the correction means is configured to perform correction so as to extend the remaining travel distance.

(Example) The present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram of a vehicular lubricating oil replacement 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 computing unit having a microcomputer configuration for computing a lubricating oil replacement timing. Reference numeral 5 denotes a display unit that displays a travelable distance until the replacement of the lubricating oil. Reference numeral 6 is a replenishment switch operated when replenishing oil, and 7 is an exchange switch operated when oil is exchanged.

Next, the operation of the lubricant replacement warning will be described with reference to the flowchart of FIG.

Initialization is performed when the oil is changed, and a traveling distance until the next oil change (for example, 15000 km) is set in advance in the microcomputer of the calculation unit 4 (F-1).
When the driver turns the ignition key to the ACC (accessory) position during boarding (F-2), the remaining traveling distance is displayed on the display unit 5 (for example, 3 after oil change).
If you are driving 000 km (150-30 = 12
0 × 100 km) (F-3). Next, if the user has changed the oil (F-4), the change switch 7 is turned on.
By inputting this signal, the calculation unit 4 sets the remaining travel distance X to 15
Reset to 0 x 100 km (F-5). On the other hand, if only the oil replenishment is performed ((F-6), the replenishment switch 6 is turned on, the replenishment correction of the remaining traveling distance is performed in the arithmetic unit (F-7), and the remaining traveling distance at that time is calculated. Is extended and the display on the display unit 5 is changed from 120 × 100 Km to 125 × 100 Km, for example.

Next, when the ignition key is turned to the START (start) position and the engine is started (F-8), the vehicle speed V is detected by the vehicle speed sensor 3 (F-9), and it is set at the time of oil change by the product of the minute time Δt. Travelable distance X
(150 × 100 km in the above example) is successively subtracted (X−V · Δt) to calculate the remaining travel distance X and displayed on the display unit 5 (F-10). The driver has this remaining mileage X
While looking at the oil, you can change the oil at an appropriate point when X is close to zero. When X becomes 0 or less (F
-11) A warning light, warning sound, voice advice, or an oil change warning such as blinking the display of -O x 100 Km is issued (F-12).

The correction at the time of replenishing oil may be made by replenishing 1 liter when the replenishment switch 5 is pressed once, and the replenishment correction may be performed to reduce the deterioration degree by 1 liter. You may correct. In the case of the latter replenishment correction, it is assumed that 0.1 l is replenished per replenishment switch, and the replenishment switch is repeatedly operated depending on the replenishment amount (replenishment amount (l) ÷
0.1) may be pressed.

After that, the driver turns the ignition key to the OFF position (F-13), and when it further turns to the ACC position (F-14), returns to step (F-2) and repeats the series of steps described above.

(Effects of the Invention) As described above, according to the present invention, the replenishment input means for inputting the replenishment amount of lubricating oil and the remaining travel distance calculation means according to the replenishment amount input by the operation of the replenishment input means are used. A correction means for correcting the calculated remaining travel distance is provided, and when the lubricating oil is replenished, the correction is made by these means so as to extend the remaining travel distance until the lubricating oil is replaced. It is possible to issue a replacement warning at an accurate time in consideration of the fact that the deterioration degree has decreased due to the addition of oil. As a result, it is possible to prolong the replacement time in proportion to the replenishment amount of the lubricating oil, and it is possible to use the lubricating oil sufficiently until the end of its life.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a vehicular lubricant replacement warning device according to the present invention, FIG. 2 is a schematic diagram of an embodiment of a vehicular lubricant replacement warning device according to the present invention, and FIG. 3 is shown in FIG. 7 is a flowchart illustrating a lubricating oil replacement warning operation by the device shown. 1 ... Battery, 2 ... Ignition switch, 3
…… Vehicle speed sensor, 4 …… Calculator, 5 …… Display

Claims (1)

[Claims] 1. A distance detecting means for detecting a running distance of a vehicle, and the remaining running distance until the next lubricating oil change is calculated by subtracting the detected running distance from a remaining running distance set at the time of lubricating oil replacement. Remaining distance calculation means, display means for displaying the calculated remaining distance, replenishment input means for inputting the replenishment amount when replenishing the lubricating oil, and replenishment amount input by the operation of the replenishment input means And a correction means for correcting the remaining travel distance calculated by the remaining travel distance calculation means so as to extend the remaining travel distance.