WO2007072539A1

WO2007072539A1 - Engine start device and method for vehicle

Info

Publication number: WO2007072539A1
Application number: PCT/JP2005/023265
Authority: WO
Inventors: Takashi Teshima; Masahiko Ibamoto; Hiroyuki Sakamoto; Hiroshi Kuroiwa; Hitoshi Konno
Original assignee: Hitachi, Ltd.
Priority date: 2005-12-19
Filing date: 2005-12-19
Publication date: 2007-06-28
Also published as: JPWO2007072539A1

Abstract

A device and a method for starting an engine of a vehicle, capable of starting the engine without use of a dedicated starting motor and not requiring a large capacity clutch. The engine start device is used for a vehicle having an engine (1), a transmission (3) for transmitting drive power of the engine, a dog clutch (31) capable of effecting and releasing the connection between an input shaft of the transmission and the engine, and a traveling motor (2) connected to the transmission input shaft. Slip friction connection members (81) are parallelly connected to the dog clutch (31). While the vehicle travels by using a traveling motor (2), a drive device (33) connects the slip friction connection members (81) and starts the engine (2).

Description

VEHICLE MOTOR START DEVICE AND START METHOD

Technical field

TECHNICAL FIELD [0001] The present invention relates to a motor starter for a vehicle, and in particular, an electric motor is added in addition to the motor to switch the driving force by the motor and the motor, or driving force assist or motor by the motor during traveling by the motor. TECHNICAL FIELD The present invention relates to a vehicle prime mover starting device and a starting method in a vehicle power transmission device having functions such as regeneration of vehicle kinetic energy during deceleration by the vehicle, and gear shifting of a stepped transmission by driving torque of an electric motor.

Background art

In recent years, as a means for preventing global warming and improving vehicle fuel efficiency, so-called parallelo and hybrid vehicles having both a prime mover and an electric motor as driving force sources have been developed and produced. This parallel and hybrid vehicle runs only with an electric motor, generates electricity with the vehicle's motion energy when decelerating and regenerates it into the battery, or performs an idling stop that automatically stops the prime mover when the vehicle is stopped and starts when starting. As a result, the total energy consumption can be suppressed and the fuel consumption can be reduced.

[0003] In such a vehicle, when the battery charge amount decreases while traveling with only the electric motor or when it is necessary to accelerate at a higher torque, the prime mover is started and the combined drive of the prime mover and the electric motor or the prime mover Must only move to driving. For this reason, an automatic starting function of the prime mover is necessary.

[0004] Conventionally, the following is known as an automatic starting system for a prime mover. (1) When a starting motor is provided separately from the traveling motor, the starting motor is used. (2) For example, as described in Japanese Patent Application Laid-Open No. 10-89456, when the starting motor is not provided separately from the traveling motor and the traveling motor is provided on the transmission side, The motor is started by transmitting the torque of the motor for driving to the motor by a friction clutch installed between the transmission and the transmission. (3) If the starter motor is not provided separately from the drive motor and the drive motor is provided on the prime mover side, and it is possible to run with only the drive motor, start the prime mover with the drive motor. is doing. (4) With a traveling motor If the motor is not provided with a starter motor and the motor is installed on the prime mover side, and it is impossible to travel with only the motor for travelling, the motor is only activated when the vehicle is stopped. It has started.

Patent Document 1: Japanese Patent Laid-Open No. 10-89456

Disclosure of the invention

Problems to be solved by the invention

[0006] In parallel and hybrid vehicles, since the prime mover is frequently stopped and automatically started, the number of times the prime mover is greatly increased compared to the conventional vehicle. For a parallel hybrid vehicle having a friction clutch between the output shaft of the prime mover and the input shaft of the transmission, and a motor for traveling on the transmission side, the automatic start method (1) In the case of a vehicle equipped with an electric motor, deterioration of the starting electric motor is accelerated. In particular, the DC brush motor, which is often used as a starting motor, is designed on the assumption that it will be used once per trip, so when the frequency of use is very high, such as Nolarerno and Hybrid vehicles. Will significantly shorten the service life. For this reason, the parallel hybrid vehicle is provided with a dedicated starter motor, but such a highly durable starter motor is expensive.

[0007] In addition, in the case of a vehicle that starts with a traveling motor without a starting motor in (2) of the automatic starting method, the friction clutch needs to have the ability to bear the maximum value of the prime mover torque. A large clutch is required.

An object of the present invention is to provide a prime mover starting device and a starting method for a vehicle that can start a prime mover without using a dedicated starter motor and that do not require a large clutch. Means

[0009] (1) In order to achieve the above object, the present invention provides a prime mover, a transmission that changes the driving force of the prime mover, and an input shaft of the transmission that can be coupled to and released from the prime mover. Used in a vehicle having a clutch and a traveling motor connected to the transmission input shaft in the previous period, and a sliding friction coupling member provided in parallel with the meshing clutch, and during traveling by the traveling motor Driving means for coupling the sliding friction coupling member, and the driving hand The friction coupling member is coupled by a step and the prime mover is started.

Due to the powerful configuration, the prime mover can be started without using a dedicated starter motor, and a large clutch can be dispensed with.

[0010] (2) In the above (1), preferably, the sliding frictional coupling member is a multi-plate clutch.

[0011] (3) In the above (1), preferably, the sliding frictional coupling member is a synchronizer ring provided in the mating clutch.

[0012] (4) In order to achieve the above object, the present invention provides a motor, a transmission that shifts the driving force of the motor, an input shaft of the transmission, and the motor that can be coupled and opened. A sliding friction coupling member used in a vehicle having an engagement clutch and a traveling electric motor connected to the transmission input shaft in the previous period, and provided in parallel with the engagement clutch during traveling by the traveling motor Are combined to start the prime mover.

By using a powerful method, it is possible to start the prime mover without using a dedicated starter motor, which can eliminate the need for a large clutch.

The invention's effect

[0013] According to the present invention, the prime mover can be started without using a dedicated starter motor, and a large clutch can be dispensed with. Brief Description of Drawings

FIG. 1 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the structure of a clutch with a synchronizer used in the motor starting device for a vehicle according to the first embodiment of the present invention.

[Fig. 3] Fig. 3 is a cross-sectional view of an essential part showing the structure of a clutch with a synchronizer used in the motor starting device for a vehicle according to the first embodiment of the present invention.

FIG. 4 is an operation principle diagram of a clutch and clutch with a synchronizer used for the prime mover starting device for a vehicle according to the first embodiment of the present invention.

FIG. 5 is a synchronizer used in the motor starting device for a vehicle according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating the operating principle of a clutch.

FIG. 6 is an operation principle diagram of a clutch with a synchronizer used in the motor starter for a vehicle according to the first embodiment of the present invention.

FIG. 7 is a flowchart showing the control contents of the motor prime mover starting device according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing the contents of control of the prime mover starting device for a vehicle according to the first embodiment of the present invention.

FIG. 9 is a timing chart showing the contents of control by the prime mover starting device for a vehicle according to the first embodiment of the present invention.

FIG. 10 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to a second embodiment of the present invention.

FIG. 11 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to a third embodiment of the present invention.

FIG. 12 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to a fourth embodiment of the present invention.

FIG. 13 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to a fifth embodiment of the present invention.

FIG. 14 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to a sixth embodiment of the present invention.

FIG. 15 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to a seventh embodiment of the present invention.

FIG. 16 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to an eighth embodiment of the present invention.

Explanation of symbols

1… Driving motor

2 ... Motor drive motor

3 ... Transmission

4 ... Drive wheel 5 ... Motor connection device

8, 8A ... coupling device

22 Friction clutch drive

33 ··· Mesh clutch drive

51 ··· Start control device

81 ··· Synchronizer ring

BEST MODE FOR CARRYING OUT THE INVENTION

[0016] Hereinafter, the configuration and operation of the prime mover starting device for a vehicle according to the first embodiment of the present invention will be described with reference to FIGS.

First, the configuration of a vehicle equipped with the vehicle prime mover starting device according to the present embodiment will be described with reference to FIG.

A coupling device 8 is connected between the output shaft 7 of the prime mover 1 and the input shaft 9 of the transmission 3. The coupling device 8 includes a meshing clutch 31 with a synchronizer. One meshing claw of the meshing clutch 31 with a synchronizer is connected to the output shaft of the motor 1, and the other meshing claw is connected to the input shaft of the transmission 3. In addition, the traveling motor 2 is connected to the input shaft of the transmission 3 via the motor connecting device 5. The motor connection device 5 may generally be a transmission system such as a force chain composed of gears. The output shaft 6 of the transmission 3 is connected to the wheels 4. The transmission 3 can be in a neutral state in which the coupling between the input shaft and the output shaft can be released internally.

[0019] When the prime mover 1 is operating and the clutch 31 of the coupling device 8 is engaged, the driving force of the prime mover 1 is transmitted to the input shaft 9 of the transmission 3, and the wheels 4 are driven by the prime mover 1 to travel. can do. When the prime mover 1 is stopped and the clutch 31 of the coupling device 8 is released, the driving force of the traveling motor 2 is transmitted to the input shaft 9 of the transmission 3 so that the traveling by the traveling motor 2 alone can be performed. A possible so-called parallel hybrid system is constructed. The motor connection device 5 may generally be a conduction system such as a force chain composed of gears.

[0020] The coupling device 8 is used for engaging the clutch in addition to the clutch 31 with the synchronizer. A shift fork 32, a counter clutch driving device 33, a prime mover output shaft rotational speed detection sensor 52, and a shift fork position detection sensor 60 are provided. By applying thrust by the shift fork 32 by the counter clutch drive device 33, the shift fork 32 is energized and the clutch 31 is fastened and released. The prime mover output shaft rotational speed detection sensor 52 detects the rotational speed of the output shaft of the prime mover 1. The shift fork position detection sensor 60 detects the position of the shift fork 32.

The start control device 51 controls the engagement clutch drive device 33 to control the engagement and release of the engagement clutch 31 with a synchronizer. The starting control device 51 includes an output signal force of the motor output shaft rotation speed detection sensor 52, a motor rotation speed calculation device 53 that calculates the rotation speed of the motor 1, a motor rotation for traveling that detects the rotation speed of the motor 2 for traveling Speed detection sensor Rotating motor rotation speed calculation device 55 that calculates the rotation speed of the driving motor 2 from the output signal of the sensor 54, Transmission input shaft rotation speed detection that detects the rotation speed of the input shaft of the transmission 6 Output of the detection sensor 56 The signal force is also the transmission input rotation speed calculation device 57 that calculates the rotation speed of the input shaft of the transmission 6, the output of the drive wheel speed detection sensor 58 that detects the speed of the wheel 4, the signal force The drive wheel speed that calculates the speed of the wheel 4 Calculation device 59, shift fork position detection sensor 60 output shift force also calculates shift fork 32 position shift fork position calculation device 61, prime mover start completion detection device 71 to detect completion of start of prime mover 71, original A prime mover lubricating oil temperature calculation device 72 that calculates the temperature of the lubricating oil in machine 1, an accelerator opening sensor 101 that detects the accelerator opening, a brake switch 102 that detects that the brake has been depressed, and a traveling range selection The signal from the range selector 103 is input.

The start control device 51 outputs a control signal to the travel motor control device 73 that controls the travel motor 2 in addition to the counter clutch drive device 33.

The rotational speed of the prime mover 1 is detected by a prime mover rotational speed detection sensor 52 and input to the prime mover rotational speed calculation device 53. The rotational speed of the traveling motor 2 is detected by the traveling motor rotational speed detection sensor 54 and input to the traveling motor rotational speed calculation device 55. The input rotational speed of the transmission 3 is detected by the transmission rotational speed detection sensor 56 and input to the transmission input rotational speed calculation device 57. The speed of the drive wheel 4 is detected by the drive wheel speed detection sensor 58 and input to the drive speed calculation device 59. Shiftfo The first axial position is detected by the shift fork position detection sensor 60 and input to the shift fork position calculation device 61.

Next, the configuration of the counter clutch 31 with a synchronizer used in the motor starting device for a vehicle according to the present embodiment will be described with reference to FIGS.

FIG. 2 is an exploded perspective view showing a configuration of a meshing clutch with a synchronizer used in the motor starter for a vehicle according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view of an essential part showing the structure of a meshing clutch with a synchronizer used in the motor starting device for a vehicle according to the first embodiment of the present invention. FIGS. 4 to 6 are operation principle diagrams of the meshing clutch with synchronizer used in the motor starting device for the vehicle according to the first embodiment of the present invention. The same reference numerals as those in FIG. 1 denote the same parts.

2 and 3, the synchronizer ring 81 is on the tapered portion of the prime mover side gear 82 and can freely rotate. A thin groove is cut in the bottom surface of the synchronizer ring 81 so as to generate an appropriate frictional force with the tapered portion of the gear 82. There is a groove inside the grooved sleeve 83, and a synchronizer key 84 mated therewith is pressed against the grooved sleeve 83 by the annular panel 85. The grooved sleeve 83 and the hub 86 are always fastened, and the grooved sleeve 83 can move on the hub 86 in the axial direction. The hub 86 is connected to the input shaft 9 of the transmission 3 described above. That is, since the grooved sleeve 83 is connected to the above-described traveling motor 2 via the hub 86 and the above-described motor connection device 5, the torque of the traveling motor 2 is transmitted to the grooved sleeve 83.

FIG. 4 shows a gear open state. As shown in FIG. 5, when a leftward thrust is applied to the shift fork 32, the synchronizer key 84 coupled to the grooved sleeve 83 and the groove moves to the left, and the synchronizer ring 81 is moved to the prime mover side gear 82. The teeth of the synchronizer ring 81 and the grooved sleeve 83 come into contact with each other. As a result, the contact pressure between the bottom surface of the synchronizer ring 81 and the tapered portion of the motor side gear 82 is increased, and a frictional force is generated. The prime mover is cranked by this frictional force, and the prime mover side gear 82 has the same speed as the synchronizer 81. At this time, the synchronizer key 84 is displaced downward from the grooved sleeve 83 and is pressed against the lower surface of the grooved sleeve 83 by the annular panel 85.

[0027] As shown in FIG. 6, when a thrust is further applied to the shift fork 32 in the left direction, the grooved sleeve 83 further moves to the left and engages with the prime mover side gear 82. As a result, the hub 86 and the motor-side gear 82, that is, the traveling motor 2 and the motor 1 are connected.

That is, in the state of FIG. 5, the synchronizer ring 81 operates as a sliding friction coupling member that transmits the driving force of the traveling motor 2 to the prime mover 1, and the prime mover 1 can be cranked. In the state shown in FIG. 6, the counter clutch 31 is engaged, and the driving force of the prime mover 1 can be transmitted to the wheels 4 via the transmission 3.

As shown in FIG. 5, when the prime mover 1 is stopped, the interlocking clutch 31 with the synchronizer of the coupling device 8 is in an open state as shown in FIG. 4, and the vehicle is running only by the traveling motor 2. In addition, when a frictional force is generated between the prime mover side gear 82 and the synchronizer ring 81, the torque of the electric motor 2 for traveling can be transmitted to the prime mover shaft 7 by this sliding friction coupling member. Ranking and starting. Since the cranking torque of the prime mover in the warm-up state is usually several tens of Nm, the transmission torque of the sliding frictional coupling member is at most several tens to several tens of Nm. When there is a margin in the output of the traveling motor 2 during traveling using only the traveling motor 2, the driving force of the vehicle is varied by increasing the torque of the traveling motor 2 while fastening the sliding friction coupling member. The prime mover 1 can be started without any problems.

[0030] After starting the prime mover 1, the counter clutch 31 is engaged as shown in FIG. Thereafter, when the torque of the motor 2 for traveling is reduced while the output of the motor 1 is increased, the traveling force of only the traveling motor 2 is smoothly switched to traveling of the motor 1 alone.

Next, the control contents of the motor starting device for a vehicle according to the present embodiment will be described with reference to FIG. 7 and FIG.

FIG. 7 and FIG. 8 are flowcharts showing the control contents of the vehicle prime mover starting device according to the first embodiment of the present invention. Note that (A) and (B) in FIG. 7 follow (A) and (B) in FIG. 8, respectively.

When starting the prime mover 1 while traveling with only the traveling motor 2, the start control device 51 reads the speed of the drive wheel 4 from the drive wheel speed calculation device 59 in step S 1.

Next, in Step S 2, the rotational speed of the prime mover 1 is read from the prime mover rotational speed calculation device 53.

[0034] Next, in step S3, the vehicle travels from the read speed of drive wheel 4 and the speed of prime mover 1. Judgment is made as to whether the motor 1 is in a running state and the motor 1 is in a stopped state. In this determination, the accelerator opening 101, the brake switch 102, or the traveling range selector 103 may be used for determining the traveling state.

[0035] If the determination in step S3 is negative, the prime mover 1 is not started and is terminated. If the determination in step S3 is positive, go to step 4 to start prime mover 1.

[0036] In step S4, the position of the shift fork 32 is read from the shift fork position calculation device 61. In step S5, the shift fork 32 is positioned on the transmission 3 side, and the clutch 31 is released! Whether it is correct or not is determined.

[0037] If this determination is negative, once the counter clutch 31 is released, in step S6, the counter clutch drive device 33 is reversely driven to move the shift fork 32 to the transmission 3 side. Let

Next, in step S7, the position of the shift fork 32 is read, and in step S8, it is determined whether or not the mesh clutch 31 has been released. Steps S6 to S8 are repeated until this determination is positive, and if positive, the counter clutch 33 is stopped in step S9.

[0039] After the engagement clutch 31 is thus released in step S5 or step S8, the engagement clutch drive device 33 is driven to advance the shift fork 32 toward the prime mover 1 in step S10.

[0040] Next, in step S11, the position of the shift fork 32 is read from the shift fork position detection device 61. In step S12, the shift fork 32 is in the position just before the gear of the clutch 31 starts engagement. Judge correctness. Repeat steps S10 to S12 until this determination is positive.

[0041] If the determination in step S12 becomes positive, in step S13, the meshing clutch drive device 33 is stopped, and the state immediately before the meshing clutch 31 starts to be engaged is maintained. In this state, a part of the torque of the electric motor 2 for traveling is transmitted to the prime mover 1 due to friction between the prime mover side gear 82 of the counter clutch 31 and the synchronizer ring 81, so that the rotational speed of the prime mover 1 is increased and started. can do

next,. In step S14, the prime mover start completion detection device 71 is read, and step S At 15, it is determined whether or not motor 1 has been started. Repeat steps S14 to S15 until this decision is positive.

[0042] After this determination becomes positive and the motor 1 is started, it is determined in step S16 whether or not the output of the motor 1 is used for traveling. When the output of the prime mover 1 is not used for traveling, the mesh clutch 31 is disengaged. Therefore, the mesh clutch drive device 33 is reversely driven in step S17, and the shift fork position calculation device 61 is read in step S18. In step S19, it is determined whether the clutch 31 has been released. Steps S17 to S19 are repeated until this determination is positive.

[0043] If step S19 becomes positive and the mesh clutch 31 is released, the mesh clutch drive device 33 is stopped and terminated in step S20.

[0044] After starting the prime mover 1, if it is determined in step S16 that the output of the prime mover 1 is used for traveling, the rotational speed of the prime mover 1 is adjusted to the rotational speed of the transmission input shaft 9 in step S21. In step S22, it is determined that the rotational speeds of the two are substantially the same. Steps S21 to S22 are repeated until this determination is positive.

[0045] When the determination in step S22 becomes positive and the rotational speed of the prime mover 1 and the rotational speed of the transmission input shaft 9 substantially coincide with each other, in order to fasten the mesh clutch 31, Drive 33 to move shift fork 32 forward.

Next, in step S 24, the shift fork position calculation device 61 is read, and in step S 25, it is determined that the meshing clutch 31 is completely engaged. Steps S23 to S25 are repeated until this determination is positive.

When the determination in step S25 becomes positive and the meshing clutch 31 is completely engaged, in step S26, the meshing clutch drive device 33 is stopped and the process ends.

[0048] If the determination in step S16 is positive and the output of motor 1 is used for traveling, steps S17 to 20 are inserted before step S21, and clutch 31 is released. Even so!

Next, the control contents of the electric motor by the vehicle prime mover starting device according to the present embodiment will be described with reference to FIG.

FIG. 9 shows the contents of control by the vehicle prime mover starting device according to the first embodiment of the present invention. It is a timing chart which shows. The vertical axis in FIG. 9 (A) indicates the rotational speed of the prime mover 1, and the vertical axis in FIG. 9 (B) indicates the rotational speed of the drive motor 2. The vertical axis in FIG. 9 (C) indicates the torque of the driving motor 2, and the vertical axis in FIG. 9 (D) indicates the acceleration of the vehicle body. The horizontal axis represents time. A solid line indicates a case where the torque of the driving motor 2 is controlled by the prime mover starting device 51 of the present embodiment, and a broken line indicates a case where the torque of the driving motor 2 is not controlled.

[0050] When the lubricating oil temperature of the prime mover 1 is low, the resistance at the start of the prime mover 1 is large. Therefore, when starting the prime mover 1 with the drive motor 2, as shown by the broken line in FIG. 9 (C), when the torque of the drive motor 2 remains constant, the prime mover 1 is cranked with the motor 2. As shown by the broken line in Fig. 9 (B), the rotational speed of the motor 2 fluctuates, and as shown by the broken line in Fig. 9 (D), the vehicle body acceleration changes, and the driver or passengers feel unintentional deceleration. Nya feel vibrations.

Therefore, in the present embodiment, the prime mover starting device 51 outputs a control command to the motor control device 73, and executes control to increase the torque of the traveling motor 2 at the time of starting. As shown by the solid line in Fig. 9 (C), when starting the prime mover 1 while traveling with only the driving motor 2, the vehicle acceleration is kept constant as shown by the solid line in Fig. 9 (D). In addition, the output torque of the electric motor 2 for traveling is controlled. As a result, the change in the rotation speed of the motor can be reduced as shown by the solid line in FIG. 7 (B), and the driver or passenger can feel the deceleration unintended as shown by the solid line in FIG. 9 (D). You can feel the vibrations.

[0052] In the torque increase control of the traveling motor 2, for example, the starting torque is calculated by the following equation.

Starting torque = (Driving wheel acceleration Target driving wheel acceleration) X coefficient + Previous starting torque As described above, according to this embodiment, the prime mover is started by the friction force of the synchronizer ring built in the counter clutch. Since all the large prime mover torque after the start is passed through the clutch, the coupling device 8 can be made small and light.

[0053] In addition, since it is not necessary to provide a starting motor in the prime mover, manufacturing cost and weight can be reduced.

[0054] In addition, the drive device is a separate friction clutch drive that only requires the counter clutch drive device 33. Since no device is required, the cost and weight can be further reduced.

Next, the configuration and operation of the motor starter for a vehicle according to the second embodiment of the present invention will be described with reference to FIG.

FIG. 10 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to the second embodiment of the present invention. The same reference numerals as those in FIG. 1 indicate the same parts.

In the present embodiment, compared to the embodiment shown in FIG. 1, the traveling electric motor 2 is directly mounted on the coaxial axis of the input shaft 9 without using the electric motor connecting device 5. The starting method by the motor 2 of the prime mover 1 using the coupling device 8 is the same as in FIG.

[0057] Also in this embodiment, the prime mover is started by the friction force of the synchronizer ring built in the counter clutch, and all the large prime mover torque after the start passes through the counter clutch. Can be made.

[0058] In addition, since it is not necessary to provide a starting motor in the prime mover, manufacturing cost and weight can be reduced.

[0059] In addition, since the drive device does not require a separate friction clutch drive device, which only requires the mesh clutch drive device 33, the cost and weight can be further reduced.

Next, with reference to FIG. 11, the configuration and operation of a vehicle prime mover starting device according to a third embodiment of the present invention will be described.

FIG. 11 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to a third embodiment of the present invention. The same reference numerals as those in FIG. 1 indicate the same parts.

[0061] The output shaft 7 of the prime mover 1 is provided with a coupling device 8A in which a friction clutch and a meshing clutch are connected in parallel. The output of the coupling device 8A is connected to the input shaft 9 of the transmission 3. The friction clutch and the mating clutch of the coupling device 8A are operated by the friction clutch driving device 22 and the mating clutch driving device 33 so that they can be individually engaged and released. These drive units 22 and 33 may be hydraulic, pneumatic or electric.

[0062] The traveling motor 2 is further connected to the input shaft 9 of the transmission 3 via the motor connecting device 5. It has been continued. When the prime mover 1 is stopped and the two clutches of the coupling device 8 are both disengaged, the so-called parallelno, hybrid, which can be driven only by the driving motor by energizing the input shaft 9 of the transmission 3 Configure the system. The electric motor connecting device 5 may be a conduction system such as a force chain generally composed of gears. The transmission 3 can be in a neutral state in which the coupling between the input shaft and the output shaft can be released internally.

[0063] The meshing clutch of the coupling device 8A is coupled with a meshing claw 12 provided on the motor output shaft 7 by a meshing sleeve 16. The meshing sleeve 16 slides in the axial direction on the hub 13 fixed to the input shaft 9 of the transmission 3 and meshes with the claws 12. The sliding thrust is a clutch drum 21 described later. A grooved sleeve 14 force is also applied through a connecting rod 15 that passes through the hole. Further, the grooved sleeve 14 is given a thrust by the shift fork 32 fitted in the groove, and the shift fork 32 is urged by the counter clutch driving device 33.

[0064] On the other hand, the friction clutch compresses the clutch drum 20 provided on the prime mover output shaft 7 and the clutch disc provided on the clutch drum 21 fixed to the hub 13 with the clutch piston 25, thereby generating a frictional force. Is a multi-plate clutch. The clutch piston 25 is thrust by a lever 23 through a thrust bearing 24, and the lever 23 is urged by a friction clutch drive device 22.

In this system, in order to start the prime mover 1 while traveling only by the traveling motor 2, the following is performed. When the prime mover 1 is stopped, the meshing clutch and the friction clutch of the coupling device 8 are both open, and the vehicle is running only with the electric motor 2 for driving, the prime mover starting device 51 is provided with the friction clutch drive device 22. When the force is applied, the friction clutch transmits the torque of the electric motor 2 for traveling to the prime mover shaft 7, so that the prime mover 1 is cranked and started. Since the cranking torque of the prime mover in the warm-up state is usually several tens of Nm, the transmission torque of the friction clutch is at most several tens to several hundreds of Nm. When there is a margin in the output of the traveling motor 2 when traveling with only the traveling motor 2, the driving force of the vehicle fluctuates by increasing the torque of the traveling motor 2 while tightening the friction clutch. You can start prime mover 1 without

[0066] After starting the prime mover 1, the prime mover starting device 51 immediately releases the friction clutch to prevent fluctuations in the rotational speed of the prime mover 1 immediately after starting from affecting the driving force of the vehicle. afterwards, The prime mover starting device 51 adjusts the rotational speed of the prime mover 1 so that the meshing claws 12 are synchronized with the rotating meshing sleeve 16 according to the vehicle speed, and when synchronized, the prime mover starting device 51 is a counter clutch driving device. Energize 33 and slide the mating sleeve 16 to the left in the figure to join the mating claw 12. After that, when the torque of the motor 2 for driving is reduced while increasing the output of the motor 1, the driving force by only the motor 2 is smoothly switched to the driving of the motor 1 only.

[0067] During traveling using the prime mover 1, since the mesh clutch is always engaged, all the torque of the prime mover 1 is meshed and transmitted to the transmission through the clutch. Therefore, no torque exceeding the cranking torque is applied to the friction clutch.

[0068] According to the present embodiment, the prime mover 1 is started with a small-capacity friction clutch. Since all the torque of the large prime mover 1 after the start passes through the meshing clutch, the coupling device 8 is made small and light. be able to.

[0069] Further, since it is not necessary to provide a starting motor in the prime mover, manufacturing cost and weight can be reduced.

Next, the configuration and operation of a vehicle equipped with a motor starting device for a vehicle according to a fourth embodiment of the present invention will be described with reference to FIG.

FIG. 12 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to a fourth embodiment of the present invention. Note that the same reference numerals as those in FIG. 11 denote the same parts.

In the present embodiment, compared to the embodiment shown in FIG. 11, the traveling motor 2 is directly mounted on the coaxial axis of the input shaft 9 without the motor connecting device 5 interposed therebetween. The starting method by the motor 2 of the prime mover 1 using the coupling device 8 is the same as in FIG.

[0072] Also in this embodiment, the prime mover 1 is started with a small-capacity friction clutch. Since all the torque of the large prime mover 1 after starting passes through the meshing clutch, the coupling device 8 is made small and light. Can do.

[0073] Further, since it is not necessary to provide a starting motor in the prime mover, manufacturing cost and weight can be reduced.

Next, referring to FIG. 12, the motor starter starting device for a vehicle according to the fifth embodiment of the present invention is installed. The configuration and operation of the mounted vehicle will be described.

FIG. 12 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to a fifth embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 11 denote the same parts.

In this embodiment, a CVT is applied as the transmission in the embodiment shown in FIG. 1 or FIG. The output shaft of the prime mover 1 is connected to the coupling device 8 (or the coupling device 8A), and is engaged with the friction clutch (or synchronizer ring) inside, and is connected to the transmission input shaft 9 in parallel with the clutch. ing. A traveling motor 2 is connected to the transmission input shaft 9 via a connecting device 5. With the prime mover 1 stopped and the coupling device 8 (8A) opened, when the traveling motor 2 is energized, the transmission input shaft 9 is driven and the vehicle travels only with the traveling motor. In this state, when the friction clutch (or the synchronizer ring) in the coupling device 8 is brought into the friction coupling state, the prime mover 1 can be cranked and started.

Next, the configuration and operation of a vehicle equipped with a motor starting device for a vehicle according to a sixth embodiment of the present invention will be described with reference to FIG.

FIG. 13 is a system block diagram showing the configuration of a vehicle equipped with a vehicle prime mover starting device according to a sixth embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 11 denote the same parts.

In this embodiment, an automated manual transmission is applied as the transmission in the embodiment shown in FIG. 1 or FIG. The output shaft of the prime mover 1 is connected to the coupling device 8 (or the coupling device 8A), and the friction clutch (or synchronizer ring) and the meshing clutch are connected in parallel to the transmission input shaft 9 . A traveling motor 2 is connected to the transmission input shaft 9 via a connecting device 5. With the prime mover 1 stopped and the coupling device 8 (8A) opened, when the traveling motor 2 is energized, the transmission input shaft 9 is driven and the vehicle travels only with the traveling motor. In this state, when the friction clutch (or synchronizer ring) in the coupling device 8 is brought into the friction coupling state, the prime mover 1 can be cranked and started.

Next, referring to FIG. 15, the motor starting device for a vehicle according to the seventh embodiment of the present invention is installed. The configuration and operation of the mounted vehicle will be described.

FIG. 15 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to a seventh embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 11 denote the same parts.

In the present embodiment, a manual transmission is applied as the transmission in the embodiment shown in FIG. 1 or FIG. The output shaft of the prime mover 1 is connected to the coupling device 8 (or the coupling device 8A), and is engaged with the friction clutch (or synchronizer ring) inside, and is connected to the transmission input shaft 9 in parallel with the clutch. Yes. A traveling motor 2 is connected to the transmission input shaft 9 via a connecting device 5. With the prime mover 1 stopped and the coupling device 8 (8A) opened, when the traveling motor 2 is energized, the transmission input shaft 9 is driven and the vehicle travels only with the traveling motor. In this state, when the friction clutch (or the synchronizer ring) in the coupling device 8 is brought into the friction coupling state, the prime mover 1 can be cranked and started.

Next, the configuration and operation of a vehicle equipped with a vehicle prime mover starting device according to an eighth embodiment of the present invention will be described with reference to FIG.

FIG. 16 is a system block diagram showing a configuration of a vehicle equipped with a vehicle prime mover starting device according to an eighth embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 11 denote the same parts.

In the present embodiment, the prime mover starting method shown in FIG. 1 or FIG. 11 is applied to an automobile transmission disclosed in Japanese Patent Application No. 2004-190705 by the present applicant. The output shaft of the prime mover 1 is connected to the drive gear 110 and energizes the driven gears 111 and 112. These driven gears 111 and 112 are rotatably mounted on the first input shaft 113 and the second input shaft 114, respectively, and can be coupled to the mating clutches 115 and 116 fixed on these shafts. It is. A synchronizer ring 81 shown in FIG. 2 is incorporated in at least one of these meshing clutches, and can transmit friction.

[0082] In the transmission gear train, odd-numbered gears of 1st, 3rd and 5th speed are arranged on the first input shaft 113, and even-numbered gears of R, 4, 6 and 2 are arranged on the second input shaft 114. ing. Since these are generally known as so-called twin clutch type transmissions, a detailed description thereof will be omitted. [0083] However, in a general twin clutch transmission, the first and second input shafts are connected to the output shaft of the prime mover 1 via friction clutches, whereas in this system, the clutch 1 15 and 116 are connected to the output shaft of prime mover 1!

[0084] This method is also characterized by a method of connecting a traveling motor. The traveling motor 2 is connected to the carrier of the planetary gear 117 via the connection gears 11 and 10. The sun gear of the planetary gear 117 is directly connected to the first input shaft 113. The ring gear of the planetary gear 117 is connected to the second input shaft 114 via connection gears 118 and 119.

[0085] With such a configuration, the speed change operation can be performed by the electric motor 2 for traveling, and it can also be operated as a normal-reel hybrid vehicle. Note that the speed change operation is not directly related to the gist of the present invention, and the description thereof will be omitted.

[0086] When traveling with only a traveling motor as a normal hybrid vehicle, one of the odd-numbered gears and one of the even-numbered gears are connected to the respective shafts with both input mesh clutches 115 and 116 opened. When coupled to, the electric motor 2 for traveling and the output shaft 6 are connected. The gear ratio between the motor 2 for traveling and the output shaft 6 is the difference between the gear ratio of the coupled odd-stage gear and the gear ratio of the coupled even-stage gear. However, the gear ratio of the connecting gears 118 and 119 to the ring gear and the gear ratio of the connecting gears 11 and 10 to the traveling motor are set so that the planetary gear operates as a differential gear.

[0087] When the prime mover 1 stops and both the input counter clutches 115 and 116 are released, for example, when the 1st speed gear and the 6th speed gear are coupled to the respective shafts and are traveling only by the traveling motor. When the grooved sleeve of the input meshing clutch 115 is moved, the built-in synchronizer ring enters the frictional coupling state as described in FIG. 4, and the prime mover 1 is cranked and started.

[0088] As described above, according to this embodiment, since the clutches 115 and 116 originally exist between the prime mover 1 and the transmission 3, the entire system that does not need to be provided with a clutch again. Furthermore, it can be configured to be small and light.

Claims

The scope of the claims

[1] A prime mover (1), a transmission (3) for shifting the driving force of the prime mover, a meshing clutch (31) capable of fastening and releasing the prime mover and the input shaft of the transmission, Used in vehicles with a traveling motor (2) connected to the shaft,

A sliding friction coupling member (81) provided in parallel with the meshing clutch;

A driving means (33) for coupling the sliding friction coupling member during traveling by the electric motor for traveling;

A prime mover starting device for a vehicle, wherein the driving means starts the prime mover by coupling the friction coupling members.

[2] In the vehicle prime mover starting device according to claim 1,

A prime mover starter for a vehicle, wherein the sliding friction coupling member is a multi-plate clutch.

[3] The motor starter for a vehicle according to claim 1,

The prime mover starter for a vehicle according to claim 1, wherein the sliding friction coupling member is a synchronizer provided in the clutch.

[4] A prime mover (1), a transmission (3) that changes the driving force of the prime mover, a meshing clutch (31) that can fasten and release the input shaft of the transmission and the prime mover, and an input for the previous transmission Used in vehicles with a traveling motor (2) connected to the shaft,

A starting method of a motor for a vehicle, wherein the motor is started by coupling a sliding frictional coupling member (81) provided in parallel with the engagement and the clutch during traveling by the motor for traveling.