JPS62273184A - Travelling controller of non-stage automatic transmission for car - 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] 3. Detailed Description of the Invention (Field of Industrial Application) This invention relates to a travel control device for a continuously variable automatic transmission for a vehicle that controls the gear ratio according to the driving condition. .

(Prior Art) Some vehicles are equipped with a continuously variable automatic transmission in the power transmission system of an internal combustion engine, and this continuously variable automatic transmission controls the gear ratio according to the driving condition to improve the efficiency of the internal combustion engine. By the way, the vehicle is equipped with a braking device, and braking is performed by braking the braking device, but by increasing the gear ratio of the transmission, the auxiliary Engine braking is commonly used as a means of braking. Such engine braking is performed by controlling the ratio, and is performed independently of the braking operation of the braking device.

(Problem to be solved by the invention) Even in a vehicle equipped with a continuously variable automatic transmission, control of the gear ratio is performed based on the driving condition based on the multiple link information and accelerator opening information, and the brake operation information is controlled by the f link information. 1/).

By the way, if such brake operation information is used as control input information for a continuously variable automatic transmission, braking operations can be easily performed by controlling the gear ratio, and the gear ratio can be controlled more appropriately depending on the driving condition. becomes possible.

This invention was made against this background, and by using brake operation information as gear ratio control information, braking operation becomes easier, and moreover, it becomes possible to control the gear ratio even more in accordance with the driving condition. (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention aims to provide a driving control device for a continuously variable automatic transmission for a vehicle. Travel distance m' of a continuously variable automatic transmission for a vehicle that transmits the output of an engine to drive wheels via a continuously variable automatic transmission and controls the gear ratio of the continuously variable automatic transmission according to the driving condition; , a brake detecting means for detecting braking of a braking device provided in Kameoka, a braking time determining means for determining the braking time, and a braking time determining means when the braking time is longer than a predetermined time. It is characterized by comprising a gear ratio 11m means for controlling the gear ratio to be increased based on a control signal of the means.

(Operation) In the present invention, the brake detecting means detects braking of the braking device, and the braking time determining means determines the braking time. When the braking time obtained by the braking time determining means is longer than the predetermined time, the gear ratio control means calculates the FI traffic speed ratio obtained from the vehicle speed information and the throttle opening information at that time. Controls to increase the gear ratio and applies engine braking.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail based on the accompanying drawings. FIG. 1 is a block diagram showing the configuration of the present invention.

In the figure, reference numeral 1 denotes ML speed detection means for detecting vehicle speed;
2 is the fuel f! to the internal combustion engine. -Salary V! ! Throttle opening degree detection means detects the opening degree of the throttle to be adjusted, and numeral 3 denotes a brake detection means that detects braking of the braking device.

The vehicle speed information obtained from the ILp detection means 1 and the throttle opening information obtained from the throttle opening pressure detection means 2 are manually input to the target speed ratio calculation means 4, and the target speed ratio calculation means 4 calculates the The gear ratio of the M control number J ticket is calculated.

This '64m result is manually inputted to the gear ratio control means 5, which calculates the target control position from the current control position of the transmission drive means 6, and converts it into a drive signal from the gear ratio control means 5. The detection signal of the brake detection means 3 is inputted to the braking time determination means 7, and the transmission drive means 6 is driven based on the brake detection means 3 to control the gear ratio of the continuously variable transmission according to a predetermined driving condition. When the braking time becomes longer than a predetermined time, an l control signal is output, and the gear ratio is controlled in a direction in which the gear ratio becomes larger than the optimum fijl ratio controlled by the gear ratio control means 5, that is, to the low side. There is.

Therefore, in addition to the throttle opening information from the rider's accelerator operation, the brake operation information becomes the human power to control the gear ratio, and this applies engine braking to assist the braking of the braking device, making the braking operation easier and further improving the driving condition. Figures 2 to 5 show a more specific embodiment in which the present invention is applied to a toroidal continuously variable transmission.

In the figure, reference numeral 20 denotes a scooter type motorcycle, and a front wheel 21 is suspended on the front side of the vehicle body via a front fork 22. This front wheel 21 is controlled by a handle 23, and a brake lever 24 is located on the left side of the handle 23.
Is there a drive wheel on the rear side of the six car bodies? tt
Transport 25 connects axle 2 to power unit 2 of internal combustion engine 26.
It is rotatably supported via 8. The power unit 27 is supported by the vehicle body frame 3° via a bracket 29 on the thin side and a suspension (not shown) on the rear side. A brake device 31 is fixed to the power unit 27, and this brake device 31 is a mechanical brake device. Drum brakes are used. The operating lever 32 of the braking device 31 is operated by the brake lever 24, and a brake drum (not shown) fixed to the axle 28 is braked.

As shown in FIG. 3, the internal combustion engine 26 has a crank 1d1.
A one-way clutch 34 is provided at one end of 33,
This one-way clutch 34 is connected to a starter motor 35 via a connecting shaft 36. A toroidal continuously variable automatic transmission 37 is disposed at the tip of the crankshaft 33, and within its housing 38 is a human power shaft 39 connected to the crankshaft 33, and an output coupled to the input shaft 39. A cam plate 41 is rotatably disposed on the human-powered shaft 39 on which the shaft 4o is rotatably supported, and power is transmitted to the human-powered disk 43 via rollers 42. The input disk 43 is loosely coupled to the human power shaft 39, and an output disk 44 is disposed opposite to the input disk 43.The output disk 44 is provided on the input shaft 40,
Opposing rotating curved surfaces are formed on the output disk 44 and the input disk 43, and a pair of power rollers 4 are provided between the rotating curved surfaces.
5 are arranged. An output gear 46 is press-fitted into the output shaft 40 and meshes with a gear 48 on the intermediate shaft 47 .

The power rollers 45 have a toroidal convex surface that engages with the rotating curved surface, and are rotatably supported by trunnions 49 via roller shafts, and transmit power from the input disk 43 to the output disk 44. At the same time, the rotation ratio of the one-car disc 43,44, that is, the gear ratio is controlled.

The trunnion 49 is supported by the housing 38 so as to be movable in the vertical direction (direction perpendicular to the paper in the third UA). When the trunnion 49 moves a small amount in the vertical direction, the power roller 45 is deflected in the vertical direction. Therefore, a known automatic gear shift effect occurs and a desired gear ratio can be obtained.

The movement of the trunnion 49 in the vertical direction is performed by the transmission drive means 6 shown in FIG. A trunnion 49 is connected to a moving guide 51 via a link 52 and a nut member 53. A wheel gear 54 provided at the end of a rotating shaft 50 meshes with an ohm gear 56 of a servo motor 55, and the servo motor 55, the guide 51 rotates the rotating shaft 50 to rotate the trunnion 49 in the forward and reverse directions.7 The servo motor 55 is driven by the gear ratio control means 5 shown in FIG. , the calculation result of the target speed ratio calculation means 4 is inputted to this speed ratio control means 5, and to this target speed ratio calculation means 4, the vehicle'j!
! Information and opening/closing information are input manually from the throttle opening detection means 2 provided in the throttle mechanism.

Further, the gear ratio control means 5 is controlled by a control signal from the braking time determining means 7, and the braking time determining means 7 is controlled by the detection number 43 of the brake detecting means 3 for detecting the operation of the brake lever 24 or by manual input. It has become so.

An output pulley 57 is keyed to the intermediate @47 and connected to an input pulley 60 of an automatic clutch 59 via a belt 58. An input pulley 60 is loosely engaged with a clutch shaft 61 of the automatic clutch 59, a clutch center 62 is provided on the manual pulley 60 so as to be rotatable therewith, and a tarlatch outer 63 is provided on the outside thereof so as to be rotatable integrally with the clutch shaft 61. It is being With the rotation of the clutch center 62,
Centrifugal roller 64 moves outward and clutch plates 65, 66
When the clutches are brought into sliding contact and the clutch is connected, the clutch shaft 61 rotates together and transmits driving force to the vehicle @24.

In FIG. 3, the right half of the automatic clutch 59 shows a clutch engaged state in which the centrifugal roller 64 has moved outward, and the left half shows a clutch disengaged state in which the centrifugal roller 64 is located inward.

Next, check the operation of this \example as shown in Figure 5. 7 to explain based on flowchart a In step a, the single detection means 1 performs a single series process to obtain vehicle speed information from the rotational speed of the return wheel 25, and in step b
Then, the throttle opening detection means 2 performs throttle opening processing to obtain throttle opening information from the operation of the throttle that adjusts the fuel supply amount to the internal combustion engine 26, and each piece of information is read.

Then, in step C, the target gear ratio calculation means 4
Then, a target gear ratio for control is calculated from the vehicle speed information and throttle opening information obtained in steps a and b. Then, in step d, the brake detection means 3 detects the brake lever 24.
The braking caused by the operation is detected, and the braking time determining means 7 determines whether or not braking has been performed for a predetermined time (step e).

If braking has been performed for a predetermined time or longer, the optimum gear ratio at that time obtained by the target gear ratio calculating means 4 is determined from the vehicle speed information obtained in step a and the throttle opening information obtained in step b. Control to the low side by a certain amount. That is, the gear ratio for engine braking is added to the main gear ratio, the gear ratio is increased, and the engine brake is applied (step f).

Based on the result obtained from this calculation, the speed change R drive means 6
The servo motor 55 is controlled (steps g and h) to control the gear ratio of the continuously variable automatic transmission 37.

In step d, if braking is not performed, jump to step g. Also, in step e, if braking is not performed for a predetermined time, that is, for example, if braking is for 2 to 3 seconds tt to the following vehicle :f! Judging that it is No. 44, etc., jump to step g and do not apply the engine brake.

In this way, when the rider performs a manual brake operation, this brake operation information becomes control input information for the continuously variable automatic transmission 37, which increases the gear ratio and automatically applies engine braking. This makes it possible to control the gear ratio more in accordance with the driving conditions.

(Effects of the Invention) As described above, the present invention detects braking of the braking device by the brake detection means, judges the braking time by the braking time judgment means, and determines the braking time obtained by the braking time judgment means. When the time is longer than a predetermined time, the gear ratio control means controls the gear ratio to be larger than the optimum gear ratio obtained from the vehicle speed information and throttle opening information at that time. When the driver manually applies the brakes, this brake operation information becomes control input information for the continuously variable automatic transmission, which increases the gear ratio and automatically applies engine braking, making braking operations easier and driving faster. It becomes possible to control the gear ratio according to the condition and deafness.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of the present invention, Figs. 2 to 5 show an embodiment in which the invention is applied to a toroidal type automatic transmission, and Fig. 2 is a side view of a motorcycle. , FIG. 3 is a sectional view of the power unit, FIG. 7JJ4 is a plan view of the transmission drive means, and FIG. 5 is a flowchart of the control program. 1... Vehicle speed detection means 2... Throttle opening detection means 3... Brake detection means 4... Target gear ratio calculation means 5... Gear ratio control means 6... Transmission drive means

Claims (1)

[Claims] Driving of a continuously variable automatic transmission for a vehicle, which transmits the output of an internal combustion engine mounted on a vehicle to drive wheels via a continuously variable automatic transmission, and controls the gear ratio of the continuously variable automatic transmission according to the driving condition. The control device includes a brake detection means for detecting braking of a braking device provided in the vehicle, a braking time judgment means for judging the braking time, and a braking time determining means for determining the braking time when the braking time is equal to or longer than a predetermined time. A travel control device for a continuously variable automatic transmission for a vehicle, comprising a gear ratio control means for increasing a gear ratio based on a control signal from a determining means.