JP3063542B2 - Automatic vehicle oil temperature warning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil temperature warning device for an automatic vehicle which gives an oil temperature warning by blinking or lighting a predetermined range indicator light of a shift indicator.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, this type of oil temperature warning device has an automatic transmission computer (hereinafter referred to as "A / T computer").
The CPU 11 receives a signal from a sensor (not shown), detects the oil temperature from the signal, and outputs an oil temperature warning signal to the oil temperature warning light signal output circuit 12 according to the detection result. The oil temperature warning light signal output circuit 12 turns on the switching transistor 13 in response to the oil temperature warning signal, and outputs a signal for driving the oil temperature warning light 14 disposed in the meter panel. The warning light 14 was turned on.

[0003]

However, in the above apparatus, the oil temperature warning lamp is arranged in the meter panel and the oil temperature warning is performed independently, so that the number of parts and the cost increase. Was. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an automatic vehicle oil temperature warning device that can eliminate a plurality of display devices including an oil temperature warning light and reduce the number of parts and manufacturing costs. I do.

[0004]

In order to achieve the above object, the present invention provides a shift indicator for displaying a shift range position currently in use with a range indicator light, and detecting an oil temperature. An oil temperature detecting means comprising a CPU for outputting an oil temperature warning signal in accordance with the detection result ;
When an oil temperature warning signal is output from the oil temperature detection means,
The position of the shift range is displayed differently from the display of the shift range position in use.
From the signal output circuit that flashes the
That the oil temperature warning device of an automatic vehicle and a warning means, upon detecting a predetermined failure in the automatic transmission vehicle, comprising a failure detection means comprising a CPU for outputting a failure warning signal indicating failure warning, said warning means
When a failure warning signal is output from the failure detection means, the speed at which the shift range position in use is displayed and the oil temperature warning signal is blinked when the oil temperature warning signal is output from the oil temperature detection means are different from each other at a different speed . flashes the range indicator have rows <br/> warning, and the oil temperature detecting means and the fault detection hand
A warning signal from the failure detecting means in response to a warning signal from the stage.
There is provided an oil temperature warning device for an automatic vehicle that gives the warning by giving priority to a signal .

[0005]

According to a second aspect of the present invention, the shift indicator is disposed in a meter panel in a vehicle and / or beside a shift lever for selecting a shift range position.

[0007]

According to the present invention, the range indicator of the shift indicator for displaying the currently used shift range position is shared, and the range indicator flashes in response to the oil temperature warning signal and the failure warning signal output from the CPU. The cycle
By giving different oil temperature warnings and failure warnings,
Enable recognition .

Further, when the oil temperature warning signal and the failure warning signal is generated at the same time, a failure warning give priority to blink the range indicator. According to the second aspect , the shift indicator is disposed in the meter panel and / or beside the shift lever so that the oil temperature warning and the failure warning can be recognized even during operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic vehicle oil temperature warning device according to the present invention will be described with reference to FIGS.
FIG. 1 is a schematic view of the combination panel 3. In the figure, a shift indicator 1 is provided together with a speedometer 4 and a tachometer 5 in a combination panel 3 attached to an instrument panel in front of a driver's seat (not shown). Shift indicator 1
Are P (parking), R (reverse), N (neutral), D (drive), S (second), L (low)
Panel range lamp 15 indicating each shift range position
-20, and the current shift range position selected by the shift lever 2 described later is lit and displayed by a corresponding panel range lamp.

FIG. 2 is a schematic view of the shift lever device. In the figure, the lever-side shift indicator 1 '
It is arranged beside the shift lever 2. Like the shift indicator 1, the lever-side shift indicator 1 'has range lamps 35 to 40 indicating the respective shift range positions, and the current shift range position selected by the shift lever 2 is lit by the corresponding range lamp. .

The lighting circuit of the range lamp is configured as shown in FIG.
7, when the shift lever 2 is set to the neutral position, the inhibitor switch 21 is turned on, a voltage is applied from the battery to light up, and when the shift lever 2 is switched to another range position, the inhibitor switch 21 is turned on.
Is turned off, the connection to the battery is cut off, and the light is turned off.

Here, in the embodiment, each range lamp 15 to 20 arranged on the shift indicator 1 in the panel 3 is used.
Among them, the oil temperature warning is performed using the N range lamp 17 indicating the N range. According to this configuration, normally, as described above, the N-range lamp 37 provided on the lever-side shift indicator 1 'is turned on in accordance with the position of the shift lever 2; Only blinks.

The range lamps in panel 3 are used so that the driver can recognize them even during driving, and the use of N range lamps 17 is basically used during driving. This is because the N or P range is not selected and the lamp is turned off, and other range lamps are not suitable for a warning because the lamp is repeatedly turned on and off by frequent switching of the shift lever. .

When a failure diagnosis of various electronic control systems is performed by a diagnosis function using a detector such as a multi-use tester, the range position is set to P.
The motor is set to the range and the P range lamps 15 and 35 are turned on to check the failure state. Even in such a situation, since it is unlikely that the shift lever is set to the N range position, it can be said that it is appropriate to use the N range lamp 17 for the oil temperature warning.

In FIG. 3, a CPU 23 of the A / T computer 22 takes in a detection signal indicating an oil temperature detected by a sensor or the like and a detection signal indicating a failure, and calculates the oil temperature from the oil temperature detection signal or the failure detection signal. Alternatively, a failure is detected, and an oil temperature warning signal or a failure warning signal is output to the N range lamp signal output circuit 24 according to the detection result. The CPU 23 is connected to the N-range lamp signal input circuit 25, and the N-range lamp signal input circuit 2
5, the state of the N range lamp 17 is detected.

The N-range lamp signal output circuit 24 turns on and off the switching transistor 26 in response to the oil temperature warning signal or the fail warning signal, and outputs a signal for driving the N-range lamp 17 to output the N-range lamp. 1
7 is blinking at different periods. That is, the N range lamp signal output circuit 24 switches the switching transistor 26 according to the oil temperature warning signal or the fail warning signal.
For example, the switching transistor 26 is controlled so that the N range lamp 17 blinks quickly (frequency is about 2.0 Hz) at the time of oil temperature warning, and the switching transistor 26 is controlled at the time of failure warning. N range lamp 17 blinks slowly (frequency is about 1.0H
Z) to control the switching transistor 26. When both the oil temperature warning signal and the fail warning signal are output, the N range lamp signal output circuit 24 performs control for fail display by giving priority to the fail warning signal.

The N range lamp signal input circuit 25 includes an inhibitor switch 21 and a switching transistor 26.
It detects whether the inhibitor switch 21 is in the ON state and which switching cycle the switching transistor 26 is in, and outputs a state signal corresponding to the detection result to the CPU 23.

Next, N by the oil temperature warning device shown in FIG.
The blinking operation of the range lamp will be described based on the flowchart of FIG. In the figure, A / T computer 22
CPU 23 detects an oil temperature or a failure from the captured detection signal, and outputs an oil temperature warning signal or a failure warning signal to the N range lamp signal output circuit 24 according to the detection result. The N-range lamp signal output circuit 24 determines whether the input signal indicates a fail warning (step 101).

If the above signal indicates a fail warning, a fail signal is output to the switching transistor 26 (step 102), and the switching cycle is set so that the switching transistor 26 blinks the N range lamp 17 slowly. Control. If the signal does not indicate a failure warning, it is determined whether or not the input signal indicates an oil temperature warning (step 103).

If the signal indicates an oil temperature warning, an oil temperature signal is output to the switching transistor 26 (step 104).
Controls the switching cycle so that the N range lamp 17 blinks quickly. If the signal does not indicate an oil temperature warning, the process returns to step 101 and waits for the next warning signal.

Therefore, in this embodiment, the oil temperature warning is issued by sharing the N range lamp of the shift indicator mounted on the automatic vehicle, so that it is not necessary to provide a dedicated oil temperature warning light. Further, in the present embodiment, when a failure warning and an oil temperature warning are detected, the N range lamp is blinked at a different cycle according to these warnings,
Since the N range lamp is made to blink by giving priority to the fail warning, the fail warning and the oil temperature warning can be accurately performed.

In this embodiment, the oil temperature warning is given by blinking the N range lamp. However, the present invention is not limited to this.
The N range lamp can be turned on in response to the input of the oil temperature warning signal. In this case, the dedicated oil temperature warning lamp can be eliminated. In the present embodiment, the oil temperature warning is issued using the N range lamp. However, the present invention is not limited to this, and the oil temperature warning can be issued using another range lamp.

Further, in the above-described embodiment, the panel range lamp provided in the combination panel 3 is made to blink so as to give a warning, but the N range lamp 37 on the shift lever 2 side is also made to blink. Is also good. According to this configuration, the warning display can be checked on either the N range lamp 17 in the panel 3 or the N range lamp 37 on the shift lever 2 side, so that there is no fear of overlooking.

Further, in the case of blinking only at the time of failure diagnosis by using the multi-use tester, the driver does not need to confirm a failure or a warning in the meter panel without driving, so the panel range lamp blinks. You don't have to. Therefore, for example, only the N range lamp 37 of the shift indicator 1 'on the side of the shift lever 2 shown in FIG. 2 may blink.

[0025]

As described above, according to the present invention, the present invention has a range indicator, a shift indicator for displaying a shift range position currently in use by the range indicator, and a detection result by detecting oil temperature. depending oil temperature detecting means for outputting an oil temperature warning signal, an oil temperature warning signal from the oil temperature detecting means output
Is different from the display of the used shift range position.
Warning that the range indicator light blinks in the following manner
And a failure detecting means for outputting a failure warning signal indicating a failure warning upon detecting occurrence of a predetermined failure in the automatic vehicle, wherein the warning means comprises: When the failure warning signal is output from the detection means, the range indicator light is turned on at a different speed from the display of the shift range position in use and the blinking when the oil temperature warning signal is output from the oil temperature detection means. There line warning by blinking, and the oil
For a warning signal from the temperature detecting means and the failure detecting means
The priority is given to the warning signal from the failure detecting means.
Since the notification is made , a plurality of display devices including the oil temperature warning light are eliminated, and the number of parts and the manufacturing cost can be reduced.

Further, according to the present invention, when the failure warning signal is output from the failure detecting means, the range indicator is blinked at a different speed from the blinking in response to the oil temperature warning signal to give a warning. Thus, a failure warning and an oil temperature warning can be displayed separately. Still further, in the present invention, the warning is given by giving priority to the warning signal from the failure detection means with respect to the warning signal from the oil temperature detection means and the failure detection means. Warnings can be detected with the highest priority.

According to a second aspect of the present invention, the shift indicator is disposed in a meter panel in the vehicle and / or beside a shift lever for selecting a shift range position, and a range indicator light flashes in response to an oil temperature warning and a failure warning. Therefore, the oil temperature warning and the failure warning can be recognized even during operation.

[Brief description of the drawings]

FIG. 1 is a schematic view of a combination panel.

FIG. 2 is a schematic view of a shift lever device.

FIG. 3 is a circuit diagram illustrating an example of a configuration of an oil temperature warning device according to the present invention.

FIG. 4 is a flowchart for explaining a blinking operation of an N range lamp by an oil temperature warning device shown in FIG. 3;

FIG. 5 is a circuit diagram showing a configuration of a conventional oil temperature warning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shift indicator 2 Shift lever 3 Combination panel 10, 22 A / T computer 11, 23 CPU 12 Oil temperature warning light signal output circuit 13, 26 Switching transistor 14 Oil temperature warning light 17, 37 N range lamp 21 Inhibitor switch 24 N range Lamp signal output circuit 25 N range lamp signal input circuit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masahiro Hamano 5-33-8 Shiba, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation (56) References Japanese Utility Model 1988-121139 (JP, U) ) Surveyed field (Int.Cl. ⁷ , DB name) F16H 59/00-63/48

Claims (2)

(57) [Claims] A shift indicator for displaying a shift range position currently in use by the range indicator, detecting an oil temperature and outputting an oil temperature warning signal in accordance with the detection result; From oil temperature detecting means and the oil temperature detecting means
When the oil temperature warning signal is output, the shift
The range indicator flashes in a form different from the display of the position
In oil temperature warning device of an automatic vehicle and a warning means for performing warning by, upon detecting a predetermined failure in the automatic transmission vehicle, comprising a failure detection means for outputting a failure warning signal indicating failure warning, said warning The means, when a failure warning signal is output from the failure detection means, at a speed different from any of display of the shift range position in use and blinking when the oil temperature detection signal is output from the oil temperature detection means. the range indicator
There line warning by blinking, and the oil temperature detecting means and the
In response to the warning signal from the failure detection means, the failure detection means
Wherein the warning signal is issued by giving priority to a warning signal from an automatic vehicle. 2. The shift indicator according to claim 1, wherein the shift indicator is disposed in a meter panel in the vehicle and / or beside a shift lever for selecting a shift range position.
The oil temperature warning device for an automatic car according to the above.