JPS6319498A - Vehicle parts maintenance alarming device - Google Patents

Abstract

PURPOSE:To perform proper correction of an alarming timing even if malfunction occurs to switches, by a method wherein, during maintenance, correction is made so that a running distance remaining till a maintenance timing is lengthened, and the correction is prohibited during running of a vehicle and rotation of an engine. CONSTITUTION:The running distance, remaining till a maintenance timing, of a part needing maintenance is computed according to the running distance of a vehicle to display it. A title device is provided with a maintenance input means, operated when maintenance is made on a part, a means effecting correction so that a remaining running distance is increased when the maintenance input means is operated, and a correction prohibiting means, prohibiting correction during running of a vehicle or during rotation of an engine. Even if a supply switch or an exchange switch is made erroneously during of a vehicle or during rotation of an engine, a maintenance timing of a part is prevented from correction, and correction of the maintenance timing of a part can be properly effected.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle parts maintenance warning device that warns when it is time to replace vehicle maintenance parts.

(Prior art) Lubricating oil, oil filter,
Vehicle maintenance parts such as air filters and tires deteriorate and need to be replaced.

For example, in the past, engine lubricating oil was required to be changed every certain distance traveled or every certain number of hours the vehicle was driven, and a label was posted in an easy-to-see place to remind people to do so, but it was easy to forget. is. If lubricating oil is used beyond its allowable deterioration level, it will interfere with its lubrication effect, so it is important to warn when it is time to replace it. It is not appropriate to issue a warning based solely on travel distance or driving time, as it is not determined solely by time, but is also greatly influenced by vehicle usage conditions such as road conditions.

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.

Therefore, in order to accurately warn the lubricant when it is time to replace it, the applicant provided a replenishment input means that is operated when the lubricant is refilled, and when the input means is operated, the distance traveled by the vehicle is We have proposed a vehicle lubricant change warning device configured to make a correction to increase the calculated and displayed remaining mileage accordingly (Japanese Patent Application No. 60-269340).

However, with this type of warning device, if the replenishment input means is operated by mistake for another switch while the vehicle is running,
The remaining mileage will be corrected even though the lubricating oil has not been replenished or replaced.

(Object and Structure of the Invention) The present invention has been made in view of the above points, and aims to accurately correct the maintenance period of parts. In a vehicle parts maintenance warning device that calculates and displays the remaining mileage until the maintenance time of a part that requires maintenance, a maintenance input means is operated when a part is maintained, and when the maintenance input means is operated. The present invention is configured to include a correction means for making a correction to extend the remaining travel distance, and a correction prohibition means for prohibiting the correction while the vehicle is running or the engine is rotating.

FIG. 1 shows an overall configuration diagram of a vehicle parts maintenance warning device according to the present invention, in which the calculation unit calculates the distance traveled by the vehicle, and calculates the actual distance that can be traveled before the next parts maintenance set at the time of parts maintenance. The remaining mileage is calculated by subtracting the mileage of , and is displayed on the display. At this time, when the maintenance input means inputs that the part has been maintained, the correction means corrects the remaining mileage to increase, but the correction is prohibited when it is detected that the vehicle is running or the engine is rotating. The system is configured to prohibit corrections by means.

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

FIG. 2 is a block diagram of a lubricating oil change warning device which is an embodiment of the vehicle parts maintenance warning device according to the present invention, in which 1 is a battery, 2 is an ignition switch,
Reference numeral 3 denotes a vehicle speed sensor, 4 a microcomputer-configured calculation unit that calculates when to replace the lubricating oil, and 5 a display unit that displays the distance that can be traveled until the lubricating oil is replaced. Reference numeral 6 designates a replenishment switch that is operated when replenishing oil, 7 a replacement switch that is operated when changing oil, and 8 a crank angle sensor.

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

Initial settings are made at the time the oil is changed, and the mileage (for example, 15,000 stores) until the next oil change 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 (F-2) while riding, the remaining mileage is displayed on the display 5 (for example, after changing the oil
If 000 bottles are running (150-30=ko2
0x100 stones) (F-3>. Next, if the user changes the oil, CF-4> turns on the exchange switch 7.

Next, check whether the vehicle is running or the engine is rotating using the vehicle speed sensor 3 and crank angle sensor 8.F-5>
, if the vehicle is not running or the engine is not running, reset the remaining mileage X to 150X1QOKJnF.
-6>, if the vehicle is running or the engine is rotating, correction is prohibited (F-7>. On the other hand, if only oil replenishment is performed (F-8> refill switch 6 is turned on) , check whether the vehicle is running or the engine is rotating using the vehicle speed sensor 3 or crank angle sensor 8.F-9
>, if the vehicle is not running or the engine is not rotating, the calculation unit will replenish the remaining mileage (F-10
), the remaining mileage at that point is extended, and the display on the display unit 5 changes from the 120x100 version to 125x100KJ, for example.
Changes to n. On the other hand, if the vehicle is running or the engine is rotating, correction is prohibited (P-11).

Next, it is determined whether the ignition key is on or not. If the ignition key is on, the vehicle speed is determined by the vehicle speed sensor 3.
F-13>, by multiplying by the minute time △t, subtract one after another from the travelable distance
△t) Calculate the remaining mileage X and display it on the display unit 5 (“
-14). The driver should keep an eye on this remaining mileage X and change the oil at an appropriate point when X approaches O. When X is O or lower (F-15> Warning light, warning sound, voice advice or -OX1
An oil change warning is issued by flashing the 001m display (F-16).

Incidentally, the correction at the time of oil replenishment may be performed by assuming that 1g is refilled when the refill switch 5 is pressed once, and performing replenishment correction to reduce the degree of deterioration by 13 minutes, or by accurately measuring the amount of oil replenishment. Supplementary correction may be performed. In the case of the latter replenishment correction, 0.1. Assuming that IQ has been replenished, press the replenishment switch according to the replenishment amount (replenishment amount (N)
) Total 0.1) You may also press the button.

Then the driver turns the ignition key to F (off)
When turning to position F-17>, roughly turning to ACC position (F-18> step (return to F-2>, above), repeat the series of steps.

Although the present invention has been described above using a lubricating oil change warning device as an example, the present invention is not limited thereto and can be applied to warning devices for tire replacement, oil filter replacement, air filter replacement, and the like. Further, in the above embodiment, the rotation of the engine is detected by the crank angle sensor, but the invention is not limited to this, and the detection may be performed by extracting the voltage of an orlunator, spark plug, etc. as a signal.

(Effects of the Invention) As explained above, according to the present invention, even if the replenishment switch or the replacement switch is accidentally turned on while the vehicle is running or the engine is rotating, the maintenance timing of the parts is not corrected. Even if there is a similar malfunction, it is possible to accurately correct the parts maintenance warning timing.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a vehicle parts maintenance warning device according to the present invention, FIG. 2 is a schematic diagram of a lubricating oil change warning device as an embodiment of the vehicle parts maintenance warning device according to the present invention, and FIG. 2 is a flowchart illustrating a lubricating oil change warning operation performed by the apparatus shown in FIG. 2. FIG.

Claims (1)

[Claims] In a vehicle parts maintenance warning device that calculates and displays the remaining mileage until the maintenance time of a part that requires maintenance according to the mileage of the vehicle, the maintenance input means is operated when a part is maintained, and the maintenance input is provided. Vehicle parts maintenance comprising a correction means for correcting the remaining mileage to increase when the means is operated, and a correction prohibition means for prohibiting the correction while the vehicle is running or the engine is rotating. Warning device.