JPS62502532A - Semi-automatic transmission - 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] Name: Semi-automatic transmission This invention is applicable to vehicles, construction machinery and and similar semi-automatic transmissions. this A semi-automatic transmission has an electrically controlled gearshift mechanism. synchromesh transmission, engine torque measurement sensor and located just before or after the transmission to measure the rotational speed of the drivetrain shaft. a sensor that sends a signal corresponding to the measured speed to an electrical control unit; The system selects the appropriate gear for the actual driving situation.

Semi-automatic transmissions are already known and are used in automobiles. It is widely used in drive systems with similar sound structures. conventional semi-automatic Chick transmissions, especially the clutch pedal or its equivalent. In short, the clutch and transmission are now designed.

On the other hand, these systems have a normal gear shift to select the desired drive gear - Has a selector. In these systems, the clutch and transmission A clutch must be specially designed, and a clutch is usually a centrifugal clutch. The engagement with the drive system is performed based on the engine rotation speed. Also, usually , between the clutch and transmission to reduce the shock caused by gear engagement. A torque converter is placed to protect the transmission. driver's view From a ground standpoint, a conventional system like this is one that is installed in a car. In this case, it is different from a normal manual transmission in that the clutch pedal is simply removed. If the transmission is different, or if you are using the clutch pedal to shift gears. I can only think that I can do without it. Therefore, the driver of the car always has the desired driving gear. Select a. Therefore, the driver must pay attention to gear selection and This will distract attention from this aspect.

The purpose of this invention is to develop a new type of semi-automatic transmission. The purpose of the transmission is to provide a solution that could not be solved by the prior art. Eliminate shortcomings. In this invention, the transmission is equipped with an overrunning clutch. The engagement circuit of the transmission is connected to the drive train with power supply circuits that are opened and closed by means of a power pedal or similar power regulator. It is characterized by being a road.

According to one embodiment of the invention, the overrunning clutch is configured to rotate in both rotational directions. (two-way overrunning clutch) and engages the transmission. It is placed between the output shaft and the drive shaft, connects them, and transmits the driving force to the drive gear. The sensor that measures the rotational speed is connected to the output shaft and drive shaft of the transmission. installed, and measure their rotational speeds.

An essential feature of this embodiment is that the transmission power circuit It closes when the rotational speed of the output shaft of the section differs from that of the drive shaft. , the accelerator pedal is lifted, engine power is reduced, or the speed of the car is , that is, it closes when the rotational speed of the drive shaft is zero, and at other times, the power supply The point is that the circuit is configured to be open.

According to another embodiment of the invention, the overrunning clutch is connected to the clutch shaft. It is installed between the input shaft of the transmission, connects both shafts to each other, and controls the rotational speed. The sensor that measures the speed is attached to the clutch shaft and the input shaft of the transmission. and measure the rotational speed of these axes.

According to the second embodiment of the invention, the transmission power circuit includes a clutch Closed when the rotational speeds of the shaft and the input shaft of the transmission are different, in other words If you do so, the accelerator pedal will be lifted, engine power will be reduced, or the car will It closes when the speed of the drive shaft is zero, that is, the rotational speed of the drive shaft is zero; The main point is that the power supply circuit is configured to be open.

The invention provides various advantages compared to prior art transmissions. It will be done. With the transmission according to this invention, the car is always in the optimum gear. It is driven by a. Driving at excessively low or high rpm can be avoided and the engine No damage and no wasted fuel. Car drivers don't have to think about shifting gears. Because you don't have to loosen your hands on the steering wheel, you have to be even more careful about the traffic conditions. can pay. The semi-automatic transmission according to this invention is , place the overrunning clutch on the clutch shaft or at the rear of the transmission. Since it can be attached to the drive shaft, it can be easily installed in front-wheel drive and rear-wheel drive vehicles. child In one embodiment of the invention, the overrunning clutch includes an overrunning clutch. A conventional unidirectional engagement clutch can be installed on the clutch shaft. A bar running clutch may be used, which means that the clutch shaft only rotates in one direction. It is et al.

However, to provide engine braking, a unidirectional clutch is required. shall be equipped with a locking mechanism. The overrunning clutch is It can also be a two-way engaging overrunning clutch, which allows the Engine braking can be applied without the need for a separate locking mechanism.

This invention provides that a semi-automatic transmission according to this invention is used. By way of example shown in the accompanying drawing, which schematically shows the drive system of a vehicle or other similar vehicle, This will be explained below.

FIG. 1 shows a first embodiment of the invention.

FIG. 2 shows a second embodiment of the invention.

FIG. 1 schematically shows a drive train system, which includes a motor 10, a clutch transmission 14, transmission 16, output shaft 18a of transmission 16 and drive The shaft of the two sections from the transmission consisting of the driving shaft 18b, over It includes a running clutch 21 and a drive gear 22. overrunnin The clutch 21 engages in two directions, and engages the output shaft 18a of the transmission 16 and the drive shaft 18a. It is arranged between the moving shaft 18b and connects both the shafts 18a and 18b. Crap CH14 is a conventional type used in manual transmissions. , the transmission 16 is of a conventional synchro mesh. This The difference between the transmission 16 and the conventional one lies in the shift mechanism. this invention In the transmission, the shift mechanism 4 is electrically or electrically controlled. The gear shift element may be a solenoid, a linear motor, or an electrically controlled type. hydraulic or pneumatic valves.

The power of the engine 10 is controlled by a power regulator like an accelerator pedal. The momentary torque of the engine 10 is measured. A sensor 12 is provided to measure the temperature. Output shaft 18 of transmission 16 A is provided with a sensor 20a, which determines the rotational speed of the drive shaft 18a. Detected.

Further, the sensor 20b of the drive shaft 18b detects the rotation speed of the drive shaft 18b. Sen The output shaft 18a of the transmission 16 and the overrunning clutch 20b are connected to each other. The sensor may be provided at an appropriate position at the rear of the switch 21, and the sensor may be installed at a suitable position at the rear of the switch 21, and the sensor Measures a directly proportional velocity. As mentioned above, the clutch 14 is connected to the drive system of an automobile. This is a commonly used clutch and is operated by a clutch pedal 6 or the like.

For gear engagement, the transmission is provided with an electrical circuit for engagement. There is. This circuit has an electrical control unit 2, which in the example of FIG. The torque information sent from the sensor 12 and the torque sent from the sensors 20a and 20b A signal regarding the rotational speed of the output shaft 18a and the drive shaft 18b of the transmission 16. receive. The control unit 2 controls engine torque and drive shaft rotation for each gear. It has a memory that stores the necessary settings regarding the speed or the vehicle's running speed. There is. The set values are not exact values of torque and speed, but if the car is in different gears. This is the range operated by. The control unit 2 comprises sensors 12.20a, 20b. Compare the received signal with the setting value stored in the memory and transcribe the necessary pulses. transmission to the shift mechanism 4 of the transmission 16 to select the gear that best suits the driving situation. Ru.

The engagement circuit also includes keys for manually selecting the driving direction (forward 1, reverse R) and neutral position V. A control unit 8 with necessary switches such as A 9 is provided. keyboard system The control unit 1-8 sends manual instructions to the electrical control unit 2, which unit Based on their instructions, pulses are sent to the shift mechanism 4 of the transmission 16. tree The board control unit 8 has a switch (key O), which enables, for example, When accelerating, downshifting is possible.

Pressing key O causes the system to bypass the control pulses by electrical control unit 2. let A power source 7 is connected to the engagement circuit and supplies the power necessary for pulse generation.

In the electric engagement circuit, the power supply circuit of the engagement circuit is normally an oven, and the power supply circuit of the engagement circuit is an oven. The shift mechanism 4 of the transmission 16 is now unable to engage with the gear. It is characterized by the fact that

The engagement circuit indicates that one of the sensors 20b indicates that the vehicle's speed is zero or Both 20a and 20b are the output shaft 18a of the transmission 16 and the drive M18b. It operates when it is notified that the rotation speeds of the two are different. Rotational speed of shaft 18a118b This occurs when the drivetrain is out of gear, i.e. when the accelerator pedal is lifted. It differs when the When the accelerator pedal 11 is lifted, the auto The bar running clutch 21 drives the output shaft 18a of the transmission 16. It is separated from the shaft 18b.

Then, the power supply circuit of the engagement circuit is closed and the transmission shift mechanism is activated. Newly engages the gear. Therefore, regardless of the driving situation, the driver himself The driving gear can always be selected using the cell pedal 11.

The drive train system shown in Figure 2 of the drawing is approximately the same as that in Figure 1, and The same members are given the same reference numerals. In FIG. 2, the system between the clutch 14 and the transmission 16. , two parts consisting of the clutch shaft 25a and the input shaft 25b of the transmission 16. from the transmission shaft, transmission 16, drive shaft 28 and drive gear 22. Become. What distinguishes it from Figure 1 is that the overrunning clutch is a normal one-way clutch. clutch shaft 25 a and an input shaft 25b of the transmission 16, the shaft 25a, 25b and connect them together.

Overrunning clutch 27 is unidirectional (engages only in one direction) If so, you have to have a rock performance so that the engine brake is applied. stomach. In this embodiment, clutch 14 is connected to a manual transmission. and a conventional latch associated with the transmission 16. It is a conventional synchromesh transmission. transmission 16 The shifter I-II vA4 is similar to that in Figure 1 and also includes a gear shift element. is also similar.

As explained in Figure 1, engine power is controlled by a power leg like an accelerator pedal. The engine 10 has a momentary torque ( A sensor 12 is provided to measure instantaneous torque.

The configuration equivalent to the configuration in FIG. 1 is as follows. Related to the clutch shaft 25a A third sensor 26a is provided to measure the rotational speed of the clutch shaft 25. The input shaft of the transmission 16 is connected to the input shaft 25b of the transmission 16. A fourth sensor 26b is provided to measure the rotational speed of the force shaft 25b. Drive shaft 2 8 or other suitable position, a fifth sensor that measures something directly proportional to the vehicle's traveling speed. 30 can be provided. In FIG. 2, the sensor 30 is indicated by a dotted line. . As mentioned above, the clutch 14 is a normal clutch used in the drive system of an automobile. It is operated by the clutch pedal 6 or the like.

In the embodiment of FIG. 2, the electrical engagement circuit is as follows. electrical engagement circuit An electrical control unit 2 is provided in connection with the sensor 12 . The torque information from the drive shaft 25a and the torque information sent from the sensors 25a and 26b A signal regarding the rotation speed of the input shaft 25b of the transmission 16, and a signal regarding the rotational speed of the input shaft 25b of the transmission 16, 8 receives a signal from a sensor 30 which measures the rotational speed of 8. The control unit 2 It has a memory that stores setting values similar to those shown in Figure 1. 1li11'm uni The cut 2 inputs the signals received from the sensors 12.26a, 26b, 30 and the memory. Compare the set value with the stored value and set the necessary pulse to the shift machine of the transmission 16. and selects the gear that best suits the driving situation.

The engagement circuit comprises a control unit 8 having the structure and function described in connection with FIG. . In the embodiment of FIG. 2, the engagement circuit includes the fourth sensor 26b and the fifth sensor 30. The speed of the vehicle is zero, or the third and fourth sensors 26a126b are cracked. The rotational speeds of the input shaft 25a and the input shaft 25b of the transmission 16 are different. It works when notified. The rotational speed of the shafts 25a and 25b is determined by the drive system being removed from the gears. ie, when the accelerator pedal is lifted. a The accelerator pedal 11 is lifted when the overrunning clutch 2 1 detaches the clutch shaft 25a from the input shaft 25b of the 1-transmission 16. Zeru. Then, the power supply circuit of the engagement circuit closes and the transmission shifts. The mechanism engages the gear anew. Therefore, even in the case of Figure 2, the Instead, the driver himself can always select the driving gear using the accelerator pedal 11. .

Next, regarding the operation of the semi-automatic transmission according to this invention Explain in detail. The first thing you need to do before starting operation is to turn on the power. Ru. Then, the keyboard control unit 8 and the electric control unit 2 control the traveling speed to zero. receive a signal that conveys a message. In the embodiment of FIG. The signal is sent from the rotational speed sensor 20b, and in the embodiment of FIG. The number is from the fourth rotational speed sensor 26b and/or the fifth rotational speed sensor 30. It will be sent to you. This closes the current circuit and the electrical control unit 2 A function pulse is sent to the shift mechanism 4 of the transmission 16, and the After mouth driving, the transmission is in gear position (and not in neutral position) If so, the engagement with the gear is released. Thus, engine 10 can be started. Wear.

To move the car backwards, depress the clutch pedal 6 and turn the engine on as usual. Remove the engine 10 from the drive system. Clutch pedal 6 is used for starting and stopping The overrunning clutch 21 or 27 is activated only when the Other l1il of the series! Perform deactivation. After disengaging the engine 10, the driver presses key R on the keyboard 9 of the control unit 2. Instructions from key R are electrically controlled. The unit 2 is bypassed and the shift mechanism 4 of the transmission 16 is Shift the cushion to reverse. If you lift the clutch pedal 6, the rear Start leaving. Reversing can be interrupted by pressing the clutch pedal.

When the speed of the car is zero, the electric control unit 2 controls the transmission 16. The shift mechanism 4 shifts the transmission to neutral.

To start moving forward, the driver must press key 1 on keyboard 9 of control unit 2. , the same operation as above. Clutch pedal 6 is depressed, drive is interrupted, and the brake is When the speed of the car becomes zero with the key operation, the electric control unit 2 changes the transmission. Shift to neutral. In the embodiment of FIG. 1, when accelerated, the electrical control The unit receives signals from one rotational speed sensor 20b and one torque sensor 12, and The shift mechanism of the transmission 16 is adjusted based on the information stored in the rotation speed memory. 4. Select a gear shift element that matches the acceleration speed. In the embodiment shown in FIG. When the speed is accelerated, the electric control unit detects one rotational speed sensor 26b and and/or signals from the fifth sensor 30 and torque sensor 12 and rotational speed memory According to the information stored in the shift mechanism 4 of the transmission 16, the acceleration speed is Select the gear shift element that matches.

In the embodiment of FIG. 1, when the accelerator pedal 11 is lifted, the A running clutch connects the output shaft 18a of the transmission 16 from the drive shaft 18b. make them leave. As a result, a rotation speed difference occurs between the shafts 18a and 18b, and this is recorded in the control unit 2 by signals from the sensors 20a, 20b. rotate Said difference in speed causes the power circuit to close and force the gearshift element into the correct gear. engage. While the car is running, the rotational speed sensor 20a measures the rotational speed of the drive shaft 18b. , a torque sensor 12 continuously measures the engine torque and sends a signal to the electrical control unit. 2 and the keyboard control unit 8.

The keyboard control unit 8 has an alarm that indicates when a gear has been shifted. An alarm, such as a room lamp, can be provided. This alarm lamp It is not necessary to indicate which gear is required, and it is not necessary to indicate whether the It is sufficient to show that

This situation can be corrected by lifting the accelerator pedal 11 and The new gear engages immediately. If necessary, the electric control unit 2 can be connected to a keyboard control unit. It may be bypassed by means of key 0 of knit 8, thereby preventing the so-called overload. Engage the overtaking (overtaking) gear. Press O key, accelerator 1 When you lift 1, the gear will be downshifted by one step, but this is only useful for overtaking. and is often necessary. Similarly, press the key ■ to shift to neutral. This allows for coasting.

In the embodiment of FIG. 2, if the accelerator pedal is lifted in a similar situation, the - The bar running clutch connects the clutch shaft 25a to the input of the transmission 16. Remove it from the shaft 25b. As a result, a difference occurs in the rotational speeds of the shaft 25a and the shaft 25, which causes , the third and fourth sensors 26a, 26bfi1, etc. are recorded in the control unit. It will be done. Such a difference in rotational speed closes the power circuit and ensures correct gearing. engage. During driving, the fourth rotational speed sensor 26b detects the input of the transmission 16. The rotational speed of the power shaft 25b is constantly measured, and this rotational speed is determined by the rotational speed of the transmission. In the ratio determined by the reduction ratio, it is directly proportional to the traveling speed, roughly / or 5th The rotational speed sensor 30 continuously measures the rotational speed of the drive shaft, which is directly proportional to the running speed. Ru. Further, the torque sensor 12 measures the engine torque, and the electric control unit 2 and sends a signal to the keyboard control unit 8.

In the embodiment of FIG. 2, an alarm device like the example of FIG. 1 can be provided. Wear.

The system according to the invention can be used for all types of vehicles as well as construction machinery. be able to. For large equipment such as trucks, the same gear Various rotational speeds and torque ranges should be stored in the memory of the electric control unit 2. It is possible. In this way, for example, the range can be adjusted depending on the load, terrain, and other conditions. can be selected.

The system according to this invention is suitable for conventional manual transmissions. It can be incorporated into

The embodiment shown in Figure 1 enables conventional manual transmission. To convert to a semi-automatic transmission, proceed as follows: . The engine 10 is equipped with a torque sensor, and the rotational speed sensor is transmitted to the transmission. must be installed in conjunction with the output shaft of the transmission output shaft and the drive shaft are connected to each other by a two-way overrunning clutch. Ru. The embodiment shown in Figure 2 converts the transmission into a semi-automatic transmission. To change to a mission, proceed as follows. Torque sensor for engine 10 The rotation speed sensor is installed on the clutch shaft 25a and transmission 16. It must be mounted in conjunction with the input shaft 25b and the drive shaft 28. Crap The transmission input shaft and transmission shaft are connected to each other by an overrunning clutch. connected to.

In addition to this, an electric control unit 2 and a keyboard control unit 8 are installed. connected to said sensor according to the invention. The normal mechanical shift mechanism has been removed and this An electrically controlled shift mechanism according to the invention is installed. conventional trance The mission requires no further changes. In the system according to this invention In this case, gear selection is automatic, but shifting is done by means of the accelerator pedal. done by the driver.

This invention is not limited to the configurations of the embodiments and drawings described above, but is changes within the technical scope defined in the scope of the request.

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Claims (11)

[Claims] 1. A system in which the transmission is equipped with an electrically controlled gear shift mechanism (4) Controls the black mesh transmission (16) and gear shift mechanism (4) The electric control unit (2) that measures engine torque, and the sensor (12) that measures engine torque. installed immediately before or after the transmission. to measure the rotational speed of the drive system shaft (18a, 18b or 25a, 25b). a sensor (20a, 20b or 26a, 26b), the sensor is The measured values are sent to the electric control unit (2) in order to select the appropriate gear for the situation. In this configuration, the transmission has an overrunning clutch (21; 27). ), and the engagement circuit of the transmission is connected to a drive system having an engine (1 0) by means of the accelerator pedal (11) or a similar power regulator. Semi-automatic transmissions for closed vehicles, construction equipment and similar tion. 2. The overrunning clutch (21) engages in both directions of rotation (bidirectional engagement overrunning clutch), and the output of the transmission (16) disposed between the shaft (18a) and the drive shaft (18b) so that these shafts (18a, 18b) ) are connected to each other, which transmits the driving force to the driving gear and measures the rotational speed. The sensors (20a, 20b) are connected to the drive shaft (18) of the transmission (16). a) and the drive shaft (18b), and controls the rotational speed of these shafts (18a, 18b). Semi-automatic transmission according to claim 1 to be measured. 3. The power supply circuit of the transmission is connected to the transmission output shaft (18a ) and the drive shaft (18b), it closes, in other words, In other words, the accelerator pedal (11) is lifted and the power of the engine (10) is increased. decreases or the speed of the vehicle, i.e. the rotational speed of the drive shaft (18a), is zero. The power supply circuit is configured such that it is closed when the A semi-automatic transmission according to claim 1 or 2. 4. The overrunning clutch (27) connects the clutch shaft (25a) and the transformer. It is installed between the input shaft (25b) of the transmission (16), and both shafts (25a, 2 5b) are connected to each other, and the sensors (26a, 26b) that measure the rotational speed are turned on. Latch shaft (25a, 25b) and input shaft (25b) of transmission (16) A semi-automatic machine according to claim 1, which is mounted on a semi-automatic machine and measures the rotational speed of these axes. Chick Transmission. 5. The overrunning clutch (27) has engine braking characteristics. In order to Lance mission. 6. The overrunning clutch (27) has engine braking characteristics. A semi-automatic device according to claims 1 and 4 having a locking mechanism for ·transmission. 7. A sensor (30) is associated with an engagement circuit to connect the transmission (16) and the drive. It is attached to the drive shaft (28) between the gear (22) and measures the drive speed. to the electrical control unit (2); Semi-automatic transmission according to any of the ranges 4 to 6. 8. The transmission power circuit connects the clutch shaft (25a) and the transmission. When there is a difference in rotational speed with the input shaft (25b) of the In other words, the accelerator pedal (11) is lifted and the engine (10) is turned off. If the power is reduced or the speed of the vehicle, i.e. the rotational speed of the drive shaft (28), is zero The power supply circuit is configured to be closed at some times and open at other times. Semi-automatic automatic transmission according to claim 1 and any one of claims 4 to 7 Ku transmission. 9. The electric control unit (2) controls the drive speed and engine speed stored in the memory. According to the set value of torque and the sensor (12, 20a, 20b; 26a, 26b) The transmitted instantaneous value is compared and the gear that matches the drive speed is set to the transmission ( 16) with the shift mechanism (4), the accelerator pedal (11) is lifted, The power of the engine (10) is reduced so that the gear selection is performed. Semi-automatic tran according to either range 1-3 or 1 and 4-8 mission. 10. In connection with the engagement circuit, a control unit (8) is provided, which controls the key (9). or similar switch, so that when the driver starts the car, Manually select driving direction and shift to neutral and/or down gear Any of claims 1 to 9 in which the electrical control unit (2) is bypassed in order to Semi-automatic transmission. 11. In connection with the control unit (8), a gear that is not compatible with the driving situation is engaged. An alarm device, such as an alarm lamp, is installed to provide an alarm signal when A semi-automatic transmission according to claim 10.