JPS6182056A - Operation control method of shift-up instruction device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field The present invention provides a method for instructing an upshift of a gear ratio in a manual transmission. The present invention relates to a method for controlling the operation of an indicating device.

BACKGROUND ART Conventionally, in a vehicle control indicating device for a vehicle having a multi-speed manual transmission, the current vehicle speed and the gear ratio of the manual transmission are detected, and a determination is made that the detected vehicle speed is set corresponding to the detected gear ratio. When the standard vehicle speed is exceeded, the driver is notified of the need to shift up by lighting up the lug or the like.

However, in the case of a manual transmission with a galley/o of 3rd gear or higher, with the conventional shift-up instruction device, regardless of whether or not the 7-shift shift from a low-speed ratio to a medium-speed ratio is a sudden acceleration. , the vehicle speed for determining high-speed speed is uniquely set depending on the driving conditions at the subsequent medium-speed ratio, so the 7-ft. Ta.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for controlling the operation of a shift-up instruction device that can improve fuel efficiency.

The operation control method of the present invention determines whether or not the gear ratio of a manual transmission is shifted up from a low speed ratio to a medium speed ratio due to sudden acceleration, and when it is determined that the gear ratio has been shifted up due to a situation other than sudden acceleration, the gear ratio of the manual transmission is shifted up from a low speed ratio to a medium speed ratio. The vehicle speed determination reference value for upshifting is set lower than that when upshifting occurs during sudden acceleration.

Example Embodiments of the present invention will be described below with reference to the drawings.

5 applying the motion control method according to the present invention shown in FIG.
A control circuit 1 consisting of a microconbeater is provided in the transmission control unit, and a negative pressure sensor 2, a water temperature sensor 3, a vehicle speed sensor 4, and a crank angle sensor 5 are connected to the control circuit 1. There is. The negative pressure sensor 2 generates an output voltage at a level corresponding to the magnitude of the negative pressure in the intake manifold downstream of the throttle valve of the internal combustion engine (not shown) installed in the vehicle, and the water temperature sensor 3 Generates rail output voltage according to water temperature. Vehicle speed sensor 4 generates a synchronous angular position signal that is inversely proportional to the rotational speed of the output shaft of the manual transmission. Further, the crank angle sensor 5 generates an angular position signal with a period inversely proportional to the rotational speed of the ennon crankshaft. Further, a lamp 6 for instructing an upshift is connected to the control circuit 1.

The control circuit 1 includes a level correction circuit 1L12 that corrects the output levels of the negative pressure sensor 2 and water temperature sensor 3, a multiplexer 13 that selectively outputs an output signal of either one of the level correction circuit ratios 12, and this multiplexer 13. A/A that converts the analog signal output from the
The D converter 14, the waveform shaping circuits 15 and 16 that shape the angular position signals output from the vehicle speed sensor 4 and the crank angle sensor 5 into four pulse signals, respectively, and the output Noculus of the waveform shaping circuit 15 are generated. The interval is measured by counting a predetermined clock signal and a digital signal (
V counter t7 that generates a value that is inversely proportional to the vehicle speed
Then, the output of the waveform shaping circuit 16 is measured by counting the pulses using a predetermined clock, and a digital signal (having a value inversely proportional to the engine revolution speed) representing the engine/non-revolution speed is obtained. It is composed of an Ng counter I8 that generates Ng, a drive circuit 19 that drives the lamp 6 to turn on, a CPU (central processing circuit) 20, a ROM 21 in which various programs and data are stored, and a RAM 22. A
/D converter 14, counter 17, 1B, drive circuit 19
, CPU 3O, ROM 21 and RAM 22 are connected by an input/output bus 23.

Note that the CPU 20 has multiple timers T15o and T1511.
/,To,4. .

T2nct and T,75 are built in, and the timer consists of a down counter that starts counting down when set.

In such a configuration, information on the negative pressure Pl+ in the intake manifold and cooling water temperature Tw is alternatively transmitted from the A/D converter 14, information on the vehicle speed V is transmitted from the V counter 17, and information on the engine/non-rotation is transmitted from the Ne counter 18. A few Ng of information is sent to the CPU20
are respectively supplied via the input/output bus 23. CPU20
reads each of the above information according to the calculation program stored in the ROM 21, and based on that information, the NFT ANO! It is determined by the method according to the present invention whether or not the vehicle is in the desired operating state, and when it is determined that an upshift is required, a rung lighting command is output to the drive circuit 19.

Next, the procedure of the operation control method according to the present invention executed by the control circuit 1 will be explained according to the operation flow diagram of FIG.

In this procedure, first, the negative pressure P6 and the cooling water temperature TW are set.

Vehicle speed V and Enson rotation speed Ng are each read and stored in RAM.
22 [step 51]. Next, the read negative pressure P8 is set to a predetermined pressure P (for example, 15Qmml).
It is determined whether or not the negative pressure P
B is equal to or less than the predetermined pressure P1, that is, a value on the negative pressure side, and a' is set to the first predetermined value (
Step 53). The first predetermined value is a predetermined time tα (for example,
2.5jgC). p, > p.

In other words, if the value is on the atmospheric pressure side, timer T is activated as a sudden acceleration.
It is determined whether the count value T+so' of I5°I is equal to O, that is, it is determined whether the state B of Pa>P+ has continued for a predetermined time ta (C step 54).

If T,5ol=0, it is determined whether flag A is equal to 1 (step f55). When flag A is 1, it indicates that sudden acceleration was performed in the third gear ratio of the transmission. If it is All, it is determined whether the transmission is currently in 3rd gear (step f 56), and 3rd gear is selected.
If the vehicle is in the third speed, the flag A is set equal to 1 (step 57), and if it is not the third speed, the flag A is set equal to OK (step 58). On the other hand, after setting the timer T, 50' in step 53, or if it is determined that T150'''O in step 54, it is determined whether flag A is equal to 1 (step 59). Step f55 If it is determined that A=l at step 59, or after flag A is set at step 57.58, the gear ratio of the transmission has been established at least once in 3rd, 4th, or 5th gear. The flag that represents FoN!
It is determined whether or not l has been sected (step 60). F by this routine/execution until the last time. ,ff
If i'+=1, it is determined whether the gear ratio of the transmission is in the third speed (step 61).

If it is not the third gear, it is determined whether the gear ratio of the transmission is in the fourth gear (step f62), and if it is not the fourth gear, it is further determined whether the gear ratio of the transmission is in the fifth gear. (Step 63). If it is not 5th gear, 1st gear
speed, 2nd speed, or neutral state, and timer T
. NE is set to a second predetermined value corresponding to a predetermined time tb (for example, 1.5 sec) (step 64), and flag F is set. 0 is set to N4 (Stella f65)
. On the other hand, if it is determined in steps 61 to 63 that the gear ratio of the transmission is the third, fourth, or fifth speed, the timer T is activated. NE count value T. It is determined whether ME is equal to O, that is, whether the state of the third, fourth, or fifth speed has continued for a predetermined time tb (step 66). ToNg# If O, 1st speed;
Flag F is set in step 65 in the same way as in the second speed or neutral state. , 1EKO is set. Then, the timer T2rLct is activated for a predetermined time tc (for example, 2.5 se
c) is set to a third predetermined value corresponding to (step 67
), the vehicle speed V is a predetermined speed v, (for example, 6Mi l t/
h) It is determined whether or not the following is true (step 68).
. On the other hand, if 'TONE=O' in step f66, the flag FONE is set to 1 (step 69),
Then, it is determined whether the gear ratio of the transmission is in the second speed (step f70). This determination is also made when it is determined in step 60 that Foo=1, that is, when it has already been determined that the gear is in the third, fourth, or fifth speed during the previous execution of this routine. If it's not 2nd gear,
Step f67 is executed and if it is the second speed, timer T2n
Determination of whether the count value T2yLd of tt is equal to 0, that is, the predetermined time t after the second gear trap speed down.
It is determined whether or not c has elapsed (step 71).
. If T2U, 4+O, step 68 is executed.

If it is determined that V≦V in this Stellar f6B,
If T2nd=O is determined in step 77'71, or if All is determined in step 59, flag A and flag F are set. N! , is set to 0 (
Step 72).

After running Stella f72 or in Stella 7668, V
) V, it is determined whether the gear ratio of the transmission is one of the first to fourth speeds (step 73). In the case of 1st speed to 4th speed, the difference ΔV obtained by subtracting the previous value from the current value of vehicle speed V is the predetermined value v2
(For example, 0, 5 Mil g/mm) (step 74), and if ΔV≦V2, the vehicle is accelerating, and the negative pressure PB is greater than or equal to the predetermined pressure P1. A determination is made as to whether this is the case (step 7f75). P,
)P, then rapid acceleration is occurring, the timer T15o is set to a fourth predetermined value corresponding to the predetermined time td (step 76), and a flag FT indicating the level of the cooling water temperature Tw is set.
A determination is made as to whether 75 is equal to 1 (step 77). The flag FT75 indicates that the cooling water temperature TW is a predetermined temperature (
For example, O is set when the temperature is above 75°C, and l is set when the temperature is below a predetermined temperature. FT
If 75=O, it is considered to be a sudden acceleration in HOT mode, and the determination reference vehicle speed V in 1st to 4th gears. , or V. 4
The data value vONI 0241V (151'041) is set in sequence (step 78).If it is FT75-1, it is assumed to be a sudden acceleration in C0LD mode, and the discrimination standard vehicle speed is V.1 to V.4, and the data value V.13° ■o23.vo36.
■o43 is set sequentially (Stetsuno 19). on the other hand,
In step f75, if P-, ≦P1, it is a time of gentle acceleration, and it is determined whether the count value T156 of timer Tl50 is equal to 0, that is, whether the state of gentle acceleration has continued for a predetermined time td or more. A determination is made (
STETSU f80). If T150"O, there is a possibility of sudden acceleration, so step f77 is executed. T, 5o = 0
If so, it is determined whether the flag FT75 is equal to 1 (step 81). If FT75=0, it is assumed to be a slow acceleration in HOT mode, and the determination reference vehicle speed is V. 1 to V. 4 is the data value V. +2'02□, vo32°vo42 are set in sequence (step 82), and if FT75=1, C
The standard vehicle speed for determining 0LD mode's slow acceleration ■. 1 to V. 4 is the data value V. +4. ■0241v0341v
o44 are set sequentially (step 83).

If it is determined in step 74 that ΔV<■2, it is determined whether the absolute value 1ΔV1 of the difference Δ■ is smaller than ■2 (step 84). If IΔ■1≦v2, the cruise mode is in effect, and it is determined whether the negative pressure P8 is equal to or higher than the predetermined pressure 24 (step 85). PR＞
In the case of P, the timer T+so is set to a fourth predetermined value as there is a possibility that the vehicle will accelerate (step 86), and then, in step 81, F a,5 is set to 1 as in the case of slow acceleration. A determination is made as to whether they are equal or not. In step f85, P, if ≦P1, timer T
It is determined whether the count value T15o of 15o is equal to 0, that is, it is determined whether the cruise state has continued for a predetermined time td or more (step 87). T150"
If it is O, step 81 is executed taking into account the possibility of acceleration, and if T15o=0, it is determined whether flag F775 is equal to 1 (step 88). When FT75=1, it is assumed to be cruise in C0LD mode and the determination reference vehicle speed is ■. 1 to V. 4, the data value v016. vo26.
vo36. vo46 is set sequentially (step 89
). ``In the case of tys=o, it is assumed that cruise is in HOT mode, and the determination reference vehicle speed V.The data value V is set from 1 to vo3.
. +5. v025"035 are set in sequence (step 90). Then, it is determined whether flag A is equal to 1 or not (step 91). If A=O, there is no rapid acceleration condition in third gear. Therefore, the reference vehicle speed for determining 4th gear is V.

4 is the data value V. 45 is set (step 92),
If A = 1, then the sudden acceleration was deafening in the 3rd gear, so the 4th gear
Speed discrimination reference vehicle speed V. 4 is the data value■. The data value V is greater than 45. 47 is set (Stella f93).

In this way, the determination reference vehicle speed V for the first to fourth speeds. ,
Or V. 4 is determined, it is determined whether the ratio of the transmission is in the first gear (step 94), and if it is in the first gear,
It is determined whether the vehicle speed ■ is greater than the first speed determination reference vehicle speed vo1 (step 95). If v>vo, then
Assuming that the vehicle is in an operating state in which a shift flag should be set to the second speed, a rung lighting command is generated, and rung 6 is lit by the drive circuit 19 (step 96). If V≦vo1, the second
The lighting of rung 6 is stopped because the operating state that should be reached quickly has not been reached (step 97). If it is determined in step 94 that the gear ratio is not in the first gear, it is determined whether the gear ratio is in the second gear (step 98).
), if the vehicle is in the second gear, the vehicle speed V is the determination reference vehicle speed V for the second gear.

It is determined whether the value is greater than 2 (step 99). v>v
If o2 is reached, it is assumed that the operating state is such that it should shift 7 steps into third gear, and the o/g6 is lit in step 96, and the V
If ≦vo2, it is determined that the operating condition for shifting to third gear has not been reached, and the lighting of rung 6 is stopped in step 97. Similarly to the above, if it is determined in step 98 that the transmission is not in second gear, it is determined whether the gear ratio of the transmission is in third gear (step 100).
W, if it is 3 consecutive, vehicle speed V is the determination standard vehicle speed for 3rd gear ■o5
It is determined whether or not the value is larger (step 101).

If V>V, rung 6 is lit in step 96, indicating that the vehicle is in a driving state in which it should shift up to fourth gear. VriV. If so, it is assumed that the driving condition for shifting up to the fourth gear has not been reached, and the lighting of the vehicle indicator 6 is stopped. If it is determined in step 100 that the vehicle is not in third gear, it is further determined whether the gear ratio is in fourth gear (steer f 102), and if it is fourth gear, the vehicle speed ■ is the determination reference vehicle speed for fourth gear. V. 4, it is determined whether the dog is a dog or not (step 103). If V>vo4, it is assumed that the operating state is such that it should be shifted up to 5th gear, and U/Pro is lit in step 95.
The lighting of rung 6 is stopped in step 97 because the operating state to which the auto-nog should be performed has not been reached, and step 73
If it is determined that the gear ratio of the transmission is not in 1st or 4th gear, it cannot be said that the gear ratio is in 5th gear or neutral and an upshift is not required.
The lighting of the indicator 6 is stopped (step 97). Step 97 is also executed when the vehicle is in a decelerating state, which is determined in step 84 as 1Δv1>■2.

The shift-up instructing device according to the present invention is determined by the acceleration time and cruise time in the driving mode. In other words, in the case of sudden acceleration in 3rd gear in HOT mode, the reference vehicle speed for determining upshift to 4th gear is 30M1 l.
The reference vehicle speed for determining when the vehicle shifts to e/h and then shifts seven steps to fifth gear in a cruise state is 3SMjlt/h. On the other hand, in the case of slow acceleration in 3rd gear in HOT mode, the standard vehicle speed for determining upshifting to 4th gear is 23M
After that, the reference vehicle speed for determining the 7-foot shift to 5th gear in the cruising state also drops to 25M1le/A.

In the embodiment of the present invention described above, the gear ratio of the manual transmission is determined from the division value V/Nε because the value (778 g) obtained by dividing the vehicle speed ■ by the engine rotation speed N6 belongs to the range corresponding to each gear ratio. It is determined.

In addition, there is a manual gearbox for each galley/o.
A switch may be provided that turns on when operated to the foot position.

In addition, in the above-described embodiment of the present invention, a five-speed transmission is shown, and the low speed is the third speed, but the low speed may be the second speed or the first speed, and when the first speed is the low speed. The flag A is set to 0 only when the vehicle is stopped. Furthermore, the present invention can be applied to a plurality of ratios at the same time, and in this way, further improvement in fuel efficiency can be expected.

Effects of the Invention As described above, in the operation control method of the shift-up instruction device of the present invention, if the shift-up from the low-speed ratio to the medium-speed ratio of a manual transmission is not performed with sudden acceleration, the shift-up from the medium-speed ratio to the high-speed ratio is changed. Since the vehicle speed at which the shift-up is to be performed is set lower than that in the case of sudden acceleration, the shift-up can be performed quickly and fuel efficiency can be improved.

Additionally, in general, most of the conditions in which upshifts are performed due to rapid acceleration are during starting acceleration, and after that, there are limited conditions such as when overtaking acceleration, so for example, when upshifting is performed in 3rd gear with gentle acceleration. It is possible to judge such a driving environment and specify continuous driving with good fuel efficiency. On the other hand, sudden acceleration often occurs in situations such as city driving, and soft points that take drivability into account continue to be obtained during such driving.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a shift-up instruction device to which the operation control method according to the present invention is applied, FIG. 2 is an operational flowchart of a control circuit showing an embodiment of the present invention, and FIG. 3 is a shift flag discrimination standard. It is a figure showing vehicle speed. Explanation of symbols of main parts

Claims (5)

[Claims] (1) A method for controlling the operation of a shift-up instruction device that issues a shift-up instruction when the vehicle speed of a vehicle equipped with a manual transmission having at least three ratios exceeds a shift-up determination reference value set for each ratio. Then, it is determined whether the gear ratio of the manual transmission has been shifted up from a low speed ratio to a medium speed ratio due to sudden acceleration, and when it is determined that the gear ratio has been shifted up due to a condition other than sudden acceleration, a shift up determination reference value for the medium speed ratio is determined. An operation control method characterized by setting a lower value than when the gear is shifted up during sudden acceleration. (2) A patent claim characterized in that the result of determining that the gear ratio has been shifted up from a low speed ratio to a medium speed ratio due to sudden acceleration is stored, and the memory is erased by detecting the lowest vehicle speed or when the vehicle is substantially stopped. The operation control method according to scope 1. (3) The operation control method according to claim 1 or 2, characterized in that sudden acceleration is determined when the negative pressure in the intake pipe is below a predetermined pressure. (4) The operation control according to any one of claims 1 to 3, wherein deceleration of the vehicle is detected from a change in vehicle speed, and upon detection, the generation of an instruction to shift up is stopped. Method. (5) The operation control method according to claim 1, wherein the vehicle speed discrimination value is set to a different value depending on the engine temperature.