JPH0540359Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides shift control for automatic transmissions for vehicles, which controls the automatic transmissions by shifting patterns stored in correlation between vehicle speed and throttle valve opening. Regarding equipment.

<Prior Art> As such a conventional speed change control device for an automatic transmission for a vehicle, the one shown in Japanese Utility Model Application Laid-Open No. 60-149550 is known.

In other words, there are two types of power patterns: a normal pattern that prioritizes fuel efficiency and is suitable for normal economical driving, and a power pattern that prioritizes power and is suitable for when pitching and accelerating, where the shift changeover speed is set on the higher side compared to the normal pattern. The driving pattern is automatically switched (see Fig. 7).

The driving pattern is switched from the normal pattern to the power pattern when the actual accelerator pedal depression speed exceeds the accelerator pedal depression speed preset for each driving condition, while the throttle opening is changed to a predetermined opening for a predetermined time. The power pattern is switched from the power pattern to the normal pattern when the power is maintained below the power level.

As a result, when the driver suddenly depresses the accelerator pedal to accelerate the vehicle, the power pattern is automatically switched to appropriately respond to the driver's request for acceleration.

<Problems to be solved by the invention> However, in the conventional shift control device for automatic transmissions for vehicles, there are only two types of shift patterns, and in the intermediate range between these, the shift pattern can be changed according to the driver's preference or the road conditions. It was not possible to shift the automatic transmission, and it was difficult to perform driving operations that matched the driver's preferences.

The present invention was developed by focusing on the problems of the conventional technology. An object of the present invention is to provide a speed change control device for a transmission.

<Means for solving the problem> For this reason, as shown in FIG. 1, the vehicle speed detection means A, the throttle valve opening detection means B, and the automatic A normal pattern C1 in which the shift position is stored in correspondence with the vehicle speed and the throttle valve opening and is suitable for normal driving, a power pattern C3 in which the automatic shift position is set to a higher vehicle speed than the normal pattern, and a power pattern C3 in which the automatic shift position is set to a higher vehicle speed than the normal pattern. A shift pattern C consisting of a plurality of intermediate shift patterns C2 and one or more intermediate shift patterns C2 set in an intermediate region of
and shift switching means D for controlling the automatic transmission to shift from the specific shift gear to a specific other shift gear at the automatic gear shift position stored in the shift pattern according to the detected vehicle speed and the throttle valve opening; a storage means E for storing a predetermined set accelerator pedal depression speed for each shift pattern; a means F for detecting the accelerator pedal depression speed; a means G for integrating and averaging the accelerator pedal depression speed; A means H for comparing a set accelerator pedal depression speed of a shift pattern in use, and a means I for selecting a shift pattern in which a set accelerator pedal depression speed close to the integrated average value is stored as a result of the comparison. .

<Operation> Since the above configuration is adopted, an appropriate shift pattern is automatically selected according to the cumulative average value of the accelerator pedal depression speed by the driver, and a shift operation is performed based on this shift pattern. Therefore, it is possible to perform a gear change operation that reflects the driver's driving habits and the road conditions, and it is possible to perform driving operations that match the driver's preferences and road conditions. Further, by providing an intermediate shift pattern, it is possible to perform a finely tuned shift operation according to the accumulated average value of the accelerator pedal depression speed.

<Example> An example of the present invention will be described below based on FIGS. 2 to 6.

Referring to FIG. 2, an automatic transmission 2 including a torque converter 21 and a transmission 22 is connected to the output shaft of the engine 1. In order to control the hydraulic pressure of the front clutch, rear clutch, brake band, roll & reverse brake, one-way clutch, etc., it is installed in the hydraulic road leading to these and controls the hydraulic pressure by controlling the valve opening duty. Solenoid valves 11A to 11E are provided.

The output shaft of the transmission 22 is provided with a vehicle speed sensor 12 as vehicle speed detection means.
A throttle valve 13 which is interposed in the intake passage of the engine 1 and is operated in conjunction with an accelerator pedal (not shown) is provided with a throttle valve opening sensor 14 as a throttle valve opening detection means. Signals from the vehicle speed sensor 12 and the throttle valve opening sensor 14 are input to a transmission control unit 16 incorporating a microcomputer.

Here, the transmission control unit 16 sets and stores automatic shift positions of successive specific shift gears and specific other shift gears in correspondence with vehicle speed and throttle valve opening, and
Based on the vehicle speed signal and the throttle valve opening signal, the solenoid valve 1 is activated at the automatic shift position.
1A to 11E, the transmission 22 is controlled to shift from a specific shift gear to a specific other shift gear.

The shift pattern is made up of a plurality of shift patterns as shown in FIG. That is, the shift patterns include a normal pattern P1 (NP) suitable for normal driving, and a normal pattern P1 (NP) suitable for normal driving.
A power pattern P7 (PP) in which the vehicle speed change (automatic shift position) is set to a higher vehicle speed side than (NP);
It consists of a plurality of intermediate shift patterns P2 to P6 set in an intermediate region between these. Although FIG. 3 shows the automatic shift position from 3rd speed to 4th speed, a plurality of shift patterns are similarly set for other consecutive shift stages.

Furthermore, as shown in FIG. 4, each of the shift patterns P1 to P7 has a set accelerator pedal depression speed a ₁ to a ₇ that is compared with an integrated average value of actual measured values of the accelerator pedal depression speed, which will be described later. stored in the storage means. Applicable accelerator pedal depression speed a ₁
~ _a7 is set so that the value increases stepwise as the normal pattern P1 (NP) shifts to the power pattern P7 (PP).

Next, gear change control by the transmission control unit 16 will be explained with reference to FIGS. 5 and 6.

FIG. 5 shows a basic routine for speed change control of an automatic transmission.

That is, step 1 (denoted as S1 in the figure).
Then, the shift pattern selected by the shift pattern automatic setting routine (see FIG. 6) to be described later or by the setting of the shift pattern setting switch (not shown) is read.

In step 2, the vehicle speed is detected based on the input signal of the vehicle speed sensor 12.

In step 3, the throttle valve opening sensor 14
The throttle valve opening degree is detected based on the input signal.

In step 4, based on the above-mentioned selected shift pattern according to the detected vehicle speed and throttle valve opening,
A control signal is issued to the solenoid valves 11A to 11B to perform a speed change operation. Step 4 constitutes a shift switching means.

The automatic shift pattern setting routine will be explained with reference to FIG.

That is, in step 10, the normal pattern P1 (NP) is automatically selected at the beginning of the operation.

In step 11, the counter C for counting the number of integrations is canceled.

In step 12, the memory S for accumulating the pedaling speed is canceled.

In step 13, from the rate of change in the opening of the throttle valve opening sensor 13 linked to the accelerator pedal,
Detect accelerator pedal depression speed SK that is equal to or higher than a predetermined value. Note that the reason why only those above a predetermined value are detected is to exclude accelerator pedal operations unrelated to the driver's acceleration request from the cumulative average value described below. Here, step 13 constitutes an accelerator pedal depression speed detection means.

In step 14, 1 is added to counter C.

In step 15, the numerical value in the memory S and the measured accelerator pedal depression speed SK are integrated.

In step 16, the value in the memory S for accumulating the depression speed is divided by the value in the counter C to calculate the cumulative average value SM of the accelerator pedal depression speed.

Here, steps 14 to 16 constitute an accelerator pedal depression speed accumulation/average means.

In step 17, counter C and a predetermined value (in the figure
100). Here, if the value is less than the predetermined value, the process proceeds to step 13 after pausing for a predetermined time (seconds) at step 18, and if it is greater than the predetermined value, the process proceeds to step 19.

In step 19, the cumulative average value SM is compared with a set accelerator pedal depression speed _ao stored corresponding to the shift pattern currently in use. Step 19 constitutes means for comparing the integrated value and the set accelerator pedal depression speed.

Here, when SM=a _o , the process proceeds to step 13 without changing the shift pattern. SM＜a _o
When , the process proceeds to step 20, while when SM>a _o , the process proceeds to step 22.

In step 20, if the shift pattern currently in use is the normal pattern NP, the shift pattern cannot be changed, so the process proceeds to step 13 without changing the shift pattern.

In step 21, a shift pattern P o-1 in which the set accelerator pedal depression speed is one step lower, that is, a _{o-1 is} set and stored, is selected.

In step 22, if the shift pattern currently in use is power pattern PP, the shift pattern will be changed without changing the shift pattern as in step 20.
Proceed to 13.

In step 23, a shift pattern P o+1 in which the set accelerator pedal depression speed is one step higher, that is, a _{o+1 is} set and stored, is selected.

Here, steps 21 and 23 constitute a shift pattern selection means.

As described above, the automatic shift pattern selection routine selects a shift pattern in which a value close to the cumulative average value of the driver's accelerator pedal depression speed is set. That is, for a driver who operates the accelerator relatively slowly or for road conditions, a shift pattern (normal pattern or an intermediate shift pattern close to it) with a small set accelerator pedal depression speed is selected. On the other hand, in the case of a driver who requests acceleration and suddenly operates the accelerator, or in the case of road conditions, a shift pattern (a power pattern or an intermediate shift pattern close to the power pattern) with a large set accelerator pedal depression speed is selected.

Therefore, the automatic transmission is operated in accordance with an appropriate shift pattern suited to the driver's driving habits or road conditions, making it possible to perform driving operations suited to the driver's preferences and road conditions. Further, the intermediate shift pattern enables fine-grained shift operation according to the cumulative average value of the accelerator pedal depression speed.

In the embodiment, the accelerator pedal depression speed is integrated and averaged over the entire throttle valve opening range, but the accelerator pedal depression speed may be integrated and averaged only over a predetermined throttle valve opening. By doing this, small accelerator pedal operations that are virtually unrelated to acceleration requests can be excluded from the integration and average, and in the region of medium opening and above where there are differences in shift pattern characteristics (see Difference Figure and Figure 7). Since the speed at which the driver presses the accelerator pedal can be adjusted, the selection of the shift pattern can be more accurately matched to the driver's propensity and road conditions.

In addition, in the example, the accelerator pedal depression speed is integrated and averaged over the entire speed range, but a speed range is allocated for each shift pattern from a specific shift gear to a specific other shift gear, and the accelerator pedal depression speed is calculated in each speed range. The pedal depression speed can be integrated and averaged and used as a reference for selecting a shift pattern corresponding to the speed range. By doing this, it is possible to create a shift pattern according to driving habits and road conditions for each of multiple shift stages (for example, a shift operation from 1st gear to 2nd gear is based on the power pattern, and a shift operation from 2nd gear to 3rd gear is based on the power pattern). (e.g., based on a standard pattern), it is possible to more accurately match the driver's tendencies and road conditions.

Furthermore, in the embodiment, the accelerator pedal depression speed
SK is directly detected from the rate of change in the opening of the throttle valve opening sensor 13 to calculate the cumulative average value SM of accelerator pedal depression speed. It may be possible to calculate the integrated average value of the accelerator pedal depression speed by independently detecting and integrating each of them, and dividing the integrated value of the accelerator pedal depression amount by the integrated value of the accelerator pedal depression time.

<Effects of the invention> As explained above, according to the invention, the accelerator pedal depression speed is detected, integrated and averaged, and the accumulated average value is used as the accelerator pedal depression speed set for the shift pattern currently in use. A shift pattern in which a set value close to the integrated average value is selected is selected, and the shift is controlled from a specific shift gear to a specific other shift gear based on the shift pattern. It is possible to shift gears that reflect driving habits and road conditions, allowing driving operations to suit your preferences and road conditions. Further, by providing an intermediate shift pattern, it is possible to perform a finely tuned shift operation according to the accumulated average value of the accelerator pedal depression speed.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the configuration of the present invention;
The figure is a hardware configuration diagram of an embodiment of the present invention, Figure 3 is a diagram showing an example of the shift pattern of the same as the above, Figure 4 is a table showing the set accelerator pedal depression speed of the same as the above, and Figure 5 is the same as the above. A flowchart showing the basic routine of speed change control, FIG. 6 is a flowchart showing the automatic speed change pattern selection routine same as above,
FIG. 7 is a diagram showing a shift pattern in a conventional shift control device for a vehicle automatic transmission. 2...Automatic transmission, 12...Vehicle speed sensor, 13
...Throttle valve opening sensor, 11A to 11E...
...Solenoid valve, 16...Transmission control unit.

Claims (1)

[Scope of utility model registration request] The vehicle speed detecting means, the throttle valve opening detecting means, and the automatic shift positions of successive specific shift gears and specific other shift gears are stored in correspondence with the vehicle speed and the throttle valve opening, and are suitable for normal driving. A shift pattern consisting of a plurality of normal patterns, a power pattern in which an automatic shift position is set to a higher vehicle speed side than the normal pattern, and one or more intermediate shift patterns set in an intermediate region between these, and a detected vehicle speed. a shift switching means for controlling the automatic transmission to shift from the specific shift gear to a specific other shift gear at an automatic gear shift position stored in the gear shift pattern according to the throttle valve opening degree; and for each of the plurality of gear shift patterns. A storage means for storing a predetermined set accelerator pedal depression speed, a means for detecting the accelerator pedal depression speed, a means for integrating and averaging the accelerator pedal depression speed, and a setting accelerator for the accelerator pedal depression speed and the currently used shift pattern. An automatic transmission for a vehicle, comprising means for comparing the accelerator pedal depression speed with a pedal depression speed, and means for selecting a shift pattern in which a set accelerator pedal depression speed close to the cumulative average value is stored as a result of the comparison. transmission control device.