JPH07107617A - Hybrid vehicle - Google Patents

Abstract

PURPOSE:To provide a hybrid vehicle in which a traveling mode can be preset depending on the traveling environment when a vehicle travels on a predetermined route. CONSTITUTION:A route up to a destination is searched at a route searching section 43 and stored in the route memory area of a RAM 413. A motor drive section for driving a motor 10 with battery 411 power and an engine drive section for driving the motor 10 with the power generated from an engine driven generator 6 are determined previously while taking account of densely populated areas, exhaust gas regulated area, etc., and stored in a mode memory area. A densely populated area is decided based on the amount of map data in the lowermost layer including the traveling route. A decision is made for a determined motor drive section whether it can be run through only with the motor 10 based on the residual capacity of the battery 471. If the battery capacity is insufficient, the engine is driven to generate power from the generator 6 thus charging the battery 471. The charging section is set previously within an engine drive section and stored in the mode memory area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid type vehicle having a motor and an engine as drive sources, and more particularly to a hybrid type vehicle which travels while selecting a drive source according to a drive mode.

[0002]

2. Description of the Related Art In recent years, in order to eliminate exhaust gas from a vehicle from the viewpoint of environmental protection, an electric vehicle in which a motor is driven by electric power of a large-capacity battery to drive the vehicle has been put into practical use. However, there is a limit to the distance that the battery of an electric vehicle can travel, and it takes a long time to charge the battery. For this reason, a parallel hybrid vehicle has been developed in which a conventional engine that easily supplies fuel and a motor that uses clean electric power are combined, and the drive wheels are directly rotated by both of them (JP-A-59-59). 63910, USP 4533011). In this parallel type hybrid vehicle, a clutch or the like is connected according to various conditions such as traveling speed and accelerator depression amount, so that driving by a motor and an engine is appropriately switched to travel.

[0003]

[Problems to be Solved by the Invention] By the way,
There are cases where the vehicle travels on a predetermined route such as a bus or a vehicle whose route is guided by a navigation device. Even in such a case, in the conventional hybrid vehicle, the sharing of use of the engine and the motor is controlled based on the driving state of the vehicle, and the traveling environment is not taken into consideration. In addition, since it was decided to divide the use of the engine and motor depending on the driving state of the vehicle, the bus running at a certain speed or a public vehicle running at a low speed such as a parade will run only on the motor and the battery capacity will be insufficient during running. There was a possibility that In this case, it is necessary to drive with an engine, and if the area is an urban area, there is a problem of environmental pollution.

Therefore, it is a first object of the present invention to provide a hybrid type vehicle capable of presetting a traveling mode according to a traveling environment when traveling on a predetermined traveling route. . Further, it is a second object of the present invention to provide a hybrid type vehicle capable of preventing a shortage of battery capacity when the traveling mode is preset.

[0005]

According to a first aspect of the present invention, a motor and an engine for generating a driving force of a vehicle are provided, and a motor mode in which the motor drives the vehicle and an engine mode in which the engine is a driving source for traveling are selected. A hybrid type vehicle that travels in the form of a road, a road information storage unit that stores information about roads that can be traveled, a route storage unit that stores a route on which the vehicle should travel, and a travel that is stored in this storage unit. Mode determining means for determining in advance the motor drive section traveling in the motor mode and the engine drive section traveling in the engine mode from the road information corresponding to the route, and a mode for storing the traveling mode determined by the determining means. Storage means, current location detection means for detecting the current location on the travel route stored in the route storage means, and travel history detected by the current location detection means. In response to the current location of the upper, the mode of traveling mode stored by comprising a mode selection means for selecting in the memory means, to achieve the first object.
According to a second aspect of the present invention, in the hybrid vehicle according to the first aspect, a power generation unit that generates electric power by a driving force of an engine, a capacity detection unit that detects a capacity of a battery that supplies electric power to a motor, and the capacity detection unit. In the battery capacity detected in, the determination means for determining whether or not the motor drive section determined by the mode determination means in the motor mode can be traveled, and when it is determined that the traveling is impossible by this determination means, The second object is achieved by further comprising a charging unit that charges the battery by causing the power generation unit to generate electric power while traveling in the engine drive section determined by the mode determination unit.

[0006]

In the hybrid vehicle according to the first aspect of the present invention, the route to be traveled by the vehicle is stored in the route storage means, and from the road information corresponding to the traveling route, the motor drive section traveling in the motor mode and the engine mode are selected. The engine drive section to travel is determined in advance and stored in the mode storage means. While the vehicle is traveling, the current location is detected by the current location detection means, and the travel mode stored in the mode storage means is changed to
Select according to the detected current location. In the hybrid vehicle according to claim 2, the capacity of the battery that supplies electric power to the motor is detected, and it is determined whether or not the motor drive section determined by the mode determination means can be driven in the motor mode based on the detected battery capacity. to decide. When the vehicle cannot travel in the motor mode, the driving force of the engine causes the power generation unit to generate power during traveling in the engine drive section to charge the battery.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the hybrid vehicle of the present invention will be described in detail below with reference to FIGS. FIG. 1 shows a schematic configuration of a drive unit of a hybrid vehicle. The hybrid vehicle according to the present embodiment includes an engine and a motor, and the d-engine generates a driving force for the vehicle and a driving force for a rotor of a generator (generator).
That is, as shown in FIG. 1, an engine 1 such as gasoline or diesel is laterally mounted in the engine room at the front of the hybrid vehicle. A generator 6, a clutch 7, a second speed automatic transmission 9, and a motor 10 are arranged in alignment with the engine output shaft 1a of the engine 1.

The generator 6 includes a converter 46 described later.
The stator coil 12 connected to the engine output shaft 1
The rotor 15 is connected to a through a damper 13, and AC power is generated by the driving force of the engine 1 and supplied to a converter 473 described later. The clutch 7 is composed of a hydraulic wet multi-plate clutch, and its input side is connected to the shaft 17 and its output side is connected to an intermediate shaft 21 extending toward the automatic transmission 9. A sleeve-shaped output shaft 22 is rotatably fitted on the intermediate shaft 21, and a counter drive gear 23 is fixed to one end of the output shaft 22 adjacent to the clutch 7. The two-speed automatic transmission 9 is provided with an underdrive mechanism unit (U / D) having a single planetary gear unit 25 that constitutes a transmission gear unit, and its ring gear R is connected to the intermediate shaft 21 and its carrier C.
R is connected to the output shaft 22. Furthermore, carrier CR
A direct clutch C2 composed of a hydraulic multi-plate clutch is arranged between the sun gear S and the sun gear S, and the sun gear S is connected to a low speed brake B composed of a hydraulic multi-plate and a one-way clutch F.

On the other hand, the motor 10 is composed of any one of a brushless DC motor, an induction motor, a hollow motor such as a DC shunt motor, and the like, and is arranged at the outermost portion in the axial direction away from the engine 1. The motor 10 includes a stator 26 fixed to the inner wall of the hybrid unit 2 and an intermediate shaft 21.
And a rotor 27 connected to the ring gear R of the planetary gear unit 25. A coil 28 connected to an inverter 472 described later is attached to the stator 26. At the bottom of the hybrid unit 2,
The counter shaft 29 and the differential device 11 are arranged. A counter driven gear 30 and a pinion 31 that mesh with the drive gear 23 are fixed to the counter shaft 29. The differential device 11 includes a ring gear 32 that meshes with the pinion 31, and the torque from the ring gear 32 is transmitted to the left and right front wheels 33a and 33b in accordance with the load torque.

FIG. 2 shows a circuit configuration of a hybrid type vehicle. The hybrid vehicle has a main control unit 4
1 is provided. This main control unit includes a CPU (central processing unit) 411 for controlling the entire hybrid vehicle and a C
ROM (read only memory) 41 in which various programs for defining the operation of the PU 411 are stored
2 and a RAM (random access memory) 413 used as a working memory. The main control unit 41 controls the driving of each unit in the vehicle drive unit shown in FIG. 1, performs navigation processing such as route search processing and current location search processing, and further responds to each traveling position on the determined traveling route. Various processes such as a drive mode determination process for determining the drive mode and drive switching of the engine 1, the generator 6, the clutch 7, the motor 10 and the like are performed according to the drive mode. RAM413
Also functions as a mode storage means and a route storage means, and in addition to the working area, various areas such as a mode storage area and a route storage area are secured.

A route search unit 43, an absolute position detection unit 44, an output unit 45, a sensor unit 46, and a drive control unit 47 are connected to the main control unit 41 via a bus line 42 such as a data bus. ing. The route search unit 43 includes an input device 431 and a data file 432. The input device 431 is for inputting the present location (departure point) and the destination (arrival point) at the start of traveling, and includes a touch panel,
Keyboard, mouse, light pen, joystick,
Various input devices 431 such as a voice recognition device are used. Further, the input device 431 includes various communication control units (not shown) such as a car telephone and an FM receiving unit, and various data can be input from the outside by communication. The communication control unit inputs a travel route and the like, and also inputs various data such as an information center. Furthermore, the input device 431 can obtain information on the traveling route from an IC card or a floppy disk.

The data file 432 functions as road information and is composed of a storage device that stores various data necessary for route guidance. The map data 433 and the intersection data 4 are stored in the data file 432.
34, road data 435, and other data 436 in which information of various regions such as photo information of characteristic points, hotels in each region, and tourist information is stored.
Various storage media such as a floppy disk, a hard disk, a CD-ROM, an optical disk, a magnetic tape, an IC card, and an optical card are used as each of these files. Each file is a CD with a large storage capacity.
-Use of a ROM or the like is preferable, but an IC card may be used for individual data such as other data or data for each area.

Here, the map data 433 includes a hierarchical map, for example, from the highest layer to Japan, the Kanto region, Tokyo,
A map for each hierarchy such as Kanda is stored. The intersection data 434 stores data for mainly drawing an intersection map to change course according to the present embodiment. Specifically, information such as a detailed enlarged view of the intersection, the name of the intersection, the absolute position, and the angle between the roads forming the intersection is stored. Road data 435
Is the thickness of each road as the data necessary for route guidance,
Stored are road length, prohibition information such as entry prohibition, information not requiring guidance, and the like.

The absolute position detecting unit 44 uses a GPS (Global Positioning) for measuring the position of the vehicle using an artificial satellite.
Sistem) receiving device 441, a beacon receiving device 442 that receives position information of beacons arranged on the road, a direction sensor 443, a distance sensor 444, a steering angle sensor 445, and the like are used. Note that the GPS receiving device 441 and the beacon receiving device 442 can independently measure the position, but in other cases, the absolute position is detected by the combination of the distance sensor 444 and the direction sensor 443 or the distance sensor 444 and the steering angle sensor 445. It is supposed to do. Here, the azimuth sensor 443 is, for example, a geomagnetic sensor that detects the geomagnetism to obtain the azimuth of the vehicle, a gas rate gyro or an optical fiber gyro that detects the angular velocity of the vehicle and integrates the angular velocity to obtain the azimuth of the vehicle. A gyro, a wheel sensor in which left and right wheel sensors are arranged, and the amount of displacement of the azimuth is calculated by detecting the turning of the vehicle based on the output pulse difference (difference in moving distance), or the like is used. As the distance sensor 444, for example, a sensor that detects and counts the number of rotations of the wheel, a sensor that detects acceleration and integrates twice, or other measuring means is used. Further, as the rudder angle sensor 445, for example, an optical rotation sensor or a rotation resistance volume attached to the rotating portion of the steering wheel is used, but it may be an angle sensor attached to the wheel portion.

The output unit 45 includes a display device 451 and a voice output unit 452. The display device 451 displays the route set in response to the user's request, or displays a guide map along the route to travel. In addition, a characteristic photo in the middle of the intersection or the route is displayed, the remaining distance to the intersection, the traveling direction at the next intersection are displayed,
Various other guidance information is displayed. A CRT, a liquid crystal display, a plasma display, or the like is used as the display device 451. When the voice guidance mode is selected, the voice output device 423 appropriately outputs voice guidance information. For example, 3 at the intersection that is the guidance point
Outputs guidance information such as "turn right / left at the intersection 300m ahead / turn left / go straight ahead" at 00m or just before the intersection. As the voice guidance information, a voice recorded on a tape in advance or a synthesized voice produced by a voice synthesizer is used.

The sensor section 46 includes a vehicle speed sensor 461 for detecting the vehicle speed, a brake sensor 462 for detecting the amount of depression of the brake pedal, a shift lever sensor 463 for detecting the position of the shift lever, and an accelerator sensor 464 for detecting the amount of depression of the accelerator pedal. A gasoline sensor 465 for detecting the remaining amount of gasoline and a voltage sensor 466 for detecting the voltage of the battery 471 are provided. The drive control unit 47 supplies a battery 471 that supplies electric power for driving the motor 10, an inverter 472, a converter 473,
The engine control mechanism 474 and the clutch control unit 475 are provided. As the battery 471, various types such as a lead acid storage battery, a nickel-cadmium battery, a sodium-sulfur battery, a lithium secondary battery, a hydrogen secondary battery, and a redox type battery are used.
Secondary batteries, fuel cells, large capacity capacitors, etc. are used. The battery 471 is composed of, for example, a 240 [V] DC power supply.

The inverter 472 converts the current supplied from the battery 471 into a current value at which a predetermined torque is generated and supplies it to the coil 28 of the motor 10, and controls the regeneration from the motor 10 to the battery 471. . The inverter 472 includes a switch unit (not shown),
The electric connection with the coil 28 of the motor 10 is connected / disconnected. The converter 473 converts an alternating current generated by the generator 6 into a direct current in an engine drive section running in an engine mode described later, and supplies the direct current to the inverter 472 as electric power for driving the motor 10. Also,
In the charging section of the engine drive section, the power generated by the generator 6 is supplied to the inverter 472 and also to the battery 471 to charge the shortage of the battery 471. The converter 473 also includes a switch unit (not shown) so as to connect / disconnect electrical connection with the stator coil of the generator 6.

The engine control mechanism 474 controls the driving of the engine 1 by adjusting the opening of the throttle valve according to the output torque value requested by the driver. The clutch control unit 475 controls connection and disconnection of the clutch 7. When the clutch 7 is disengaged, the shaft 17 from the engine and the intermediate shaft 21 from the motor 10 are disengaged. On the other hand, when the clutch 7 is connected,
The rotation of the engine output shaft 1a is transmitted to the generator rotor 15 via the damper 13, further transmitted to the intermediate shaft 21 via the shaft 17 and the clutch 7 in the connected state, and is an input member of the automatic transmission 9. It is transmitted to the ring gear R. That is, when the clutch 7 is connected, it functions as a parallel type hybrid vehicle.

Next, the operation of the embodiment thus constructed will be described. 3 to 6 show drive distribution processing for determining drive distribution between the engine 1 and the motor 10 by the hybrid vehicle according to the present embodiment. Figure 3
As shown in, the control unit 41 monitors the input from the input device 431, and when the destination or the relay point is input (step 31; Y), the control unit 41 determines from the current position detected by the absolute position detection unit. , The route to the destination input by the input device 431 or the route to the destination passing through the relay point,
The route is determined by the route search process, and the determined route is stored in the RAM 4
The data is stored in the route storage area 13 (step 32). After that, if there is further route setting (step 33; N), after the route setting changing routine (step 34), step 32
Return to.

On the other hand, in step 31, the input device 4
When the input from 31 is the already determined travel route information (step 31; N), the input travel route is stored in the route storage area of the RAM 413 without performing the route search processing (step 35). When the travel route is input from the input device 431, when the travel route to the destination is sequentially specified by the driver by the digitizer or the like of the input device 431, the delivery is performed like a delivery service of a courier service. When the travel route related to the ground is input to the communication control unit of the input device 431 from outside the delivery center or the like by FM communication or the like, the travel route such as a bus, a cleaning car, or a public electric vehicle whose travel route is predetermined is IC. There are various cases such as input from a card or a floppy disk.

When the travel route is stored in the route storage area of the RAM 431, the main control unit 41 selects a driving force distribution mode between the engine 1 and the motor 10 (step 36), which will be described later with reference to FIG. After being selected (step 37; Y), the driving force is distributed according to the selected mode (step 38).

FIG. 4 shows a processing routine for selecting the driving force distribution mode in step 37 of FIG. In this routine, the main controller 41 selects whether the driver selects the all-zero emission mode from the input device 431 (step 41) or the partial area zero-emission mode (step 47).
Are being monitored. Here, the all-zero emission mode is a case in which the motor 10 is set to travel all of the travel routes stored in the route storage area of the RAM 431. In addition, the battery 47 is not driven in accordance with the environment on the way of the traveling route.
1 is used as a power source to drive the motor 10 with the route traveled by the motor 10 and the electric power generated by the engine 1.
Alternatively, the partial area zero emission mode is a case in which the route traveled by the combined driving force of the engine 1 and the motor 10 is preset.

When the all-zero emission mode is selected (step 41; Y), the main controller 41 causes the battery 4
It is determined whether or not 71 needs to be charged (step 42).
That is, the main control unit 41 calculates the total travel distance from the travel route stored in the route storage area of the RAM 431, and also calculates the remaining amount of the current battery capacity from the voltage of the battery 471 detected by the voltage sensor 466. . Then, the necessity of charging is determined by determining whether or not it is possible to drive only the motor 10 for the entire traveling distance with the current battery capacity. If charging is not required, that is, if the current battery capacity allows the entire traveling route to be driven by the motor 10 (step 42; N), the fact that the entire traveling route is in the motor mode is stored in the mode storage area of the RAM 431 ( Step 43), after that, the entire path is battery 471.
Is used as a power source to drive only the motor 10.

On the other hand, when charging is required (step 4)
2; Y), the main control unit 41 determines whether or not there is a charging stand for the battery 471 on the travel route stored in the route storage area of the RAM 431 (step 44), and if there is a charging stand (Y). ), The voice output unit 452 or the display device 451 is used to inquire of the driver whether or not there is an intention to charge (step 45). When an input indicating that there is an intention to charge is input from the input device 431 (step 4)
5; Y), and the fact that all traveling routes are in the motor mode is stored in the mode storage area of the RAM 431 (step 4).
3) After that, only the motor 10 travels along the entire route. In addition,
In this case, when the traveling position of the vehicle approaches the charging stand, the sound output unit 452 or the display device 451 causes
Data for prompting the charging is stored in the RAM 431 as well.

If there is no charging station in the route at step 44 (N), or if it is determined that there is no intention to charge even if there is a charging station at step 45 (N),
The main control unit 41 outputs a voice or display indicating that the all zero emission mode cannot be selected from the voice output unit 452 or the display device 451 (step 46), and proceeds to step 47. If the all zero emission mode is not selected in step 41 (step 41;
N), and after the output of step 46, the main controller 41
Determines whether or not the partial area zero emission mode is selected (step 47).

When the partial area zero emission mode is not selected either (step 47; N), the engine 1 and the motor 10 are driven while being optimally shared (step 4).
8). That is, the main control unit 41 determines the traveling mode of the hybrid vehicle while determining the traveling state of the vehicle according to the vehicle speed detected by the vehicle speed sensor 461 and the accelerator opening detected by the accelerator sensor 464. Here, in the traveling mode, in addition to the motor mode in which the battery 10 is used as a power source to drive the motor 10 alone, the first engine mode in which the generator 6 is operated by the engine 1 and the generated power is used, the motor 10 and the engine 10 are also used. There is a second engine mode in which 1 is used in combination.

In the motor mode of this embodiment, the motor 10 is used as a power source without using the driving force of the engine 1. Therefore, in the motor mode, the exhaust gas resulting from the combustion of the engine 1 is not substantially emitted. There are two ways of using the engine in the engine mode. In the first mode, the engine 1 is not used as a driving force for traveling, but is used only for operating the generator 6 to generate electric power. That is, the clutch 7 remains disengaged. In this case, the engine 1 is used as a constant rotation or constant torque characteristic to burn the engine 1 by lean burn and substantially reduce the emission amount of exhaust gas. While generating electricity in this way, the motor 1
It drives by driving 0 (series type electric vehicle). In this case, since the engine 1 only operates the generator, it is easy to maintain constant rotation or constant torque, and the combustion is performed in an ideal state as compared with the case where only the engine 1 which has a large fluctuation does not travel. Therefore, it is extremely effective in reducing exhaust gas. Engine 1
The second mode of use of is to drive the engine 1 with a constant torque,
This is a case where the excess or deficiency of torque is absorbed and added (assisted) by the motor 10 as needed. That is, the clutch 7 is connected. In this case as well, the engine 1 is operated with a constant torque, so that it is possible to burn the engine 1 in an ideal state as compared with the case of traveling only with the engine 1 in which fluctuations are severe. Therefore, it is extremely effective in reducing exhaust gas. is there. In this embodiment, as described above, the exhaust gas emission amount is suppressed as compared with the exhaust gas emission by the direct drive of only the engine 1 even in the engine mode. In this embodiment, the vehicle normally travels in the first engine mode that functions as an electric vehicle that opens in series, and travels in the second engine mode when the engine 10 is rotating at a high rotational speed.

On the other hand, when the partial area zero emission mode is selected in step 44 (N), the processing of the partial area zero emission mode shown in FIG. 5 is performed. The main control unit 41 first detects a travel route that passes through a densely populated area. That is, of the map data 433 stored in the data file 432, it is determined whether or not the area is a densely populated area based on the data amount of the map data of the lowest layer including the travel route (step 51). This judgment is based on the fact that the amount of data stored in the map data also increases as the population density increases.

Next, the main control section 41 calculates the engine OFF section (motor drive section traveling in the motor mode) and the traveling distance thereof. That is, the section on the travel route and its distance included in the densely populated area detected in step 51 and the section on the travel route and its distance included in the exhaust gas regulation area other than the densely populated area are calculated. Then, for the engine OFF section, the fact that the motor mode is set is stored in the mode storage area of the RAM 413, and the entire distance of the engine OFF section is stored in the predetermined area of the RAM 513 (step 52). In addition, as the exhaust gas regulation area, the inside of the garage, the parking lot, the underground parking lot, the vicinity of the palace, the area around the shrine, the area around the temple, the area around the hospital, the area around the toll gate, the inside of the tunnel, etc. In addition, the main control unit 41 uses the RAM 5
Of the travel routes stored in the route storage area 13 other than the engine OFF segment, the RAM 513
The engine storage mode is stored in the mode storage area of. Also, from the total travel distance of the travel route, step 52
The distance of the engine-ON possible section (engine drive section traveling in the engine mode) is calculated by subtracting the traveling distance of the engine-OFF section calculated in the step of RAM51.
The data is stored in the predetermined area No. 3 (step 53).

Next, the main control unit 41 detects the remaining battery level from the voltage of the battery 471 detected by the voltage sensor 466 and stores it in a predetermined area of the RAM 413 (step 54), and at the same time, the detected value of the gasoline sensor 465. Then, the remaining amount of gasoline is detected and stored in a predetermined area of the RAM 413 (step 55). The main control unit 41 executes step 52.
Then, from the respective data stored in the RAM 413 in step 55, the required power generation amount calculation process shown in FIG. 6 is performed (step 56).

The main control unit 41 runs with the motor 10 alone, whether the remaining battery level is insufficient, that is, the remaining battery level detected in step 54 and the engine-off section travel distance calculated in step 52. It is determined whether it is possible (step 61). If the remaining battery level is not insufficient (step 61; N), the densely populated area and exhaust gas regulation area set in step 52 can be driven only by the motor 10 without charging, and the process is ended.

On the other hand, when the remaining battery level is insufficient (step 61; Y), the power generated by the generator 6 by driving the engine 1 is supplied from the converter 473 to the motor 10 as driving power for the motor 10. In addition to this, the battery 471 is charged by supplying the insufficient charging power to the battery 471. The main control unit 41 sets the charging section for that from the engine ON section, and also stores it in the mode storage area of the RAM 513 in which the engine mode is set (step 62). It should be noted that this charging section is determined from the efficiency of the engine 10, the environment of the traveling position, and the like, and, for example, a highway, an area with a particularly low population density, etc. is preferentially selected. Then, the main control unit 41 calculates the rotation speed increase amount of the engine 1 required to charge the shortage of the battery 471 in the set charging section and stores it in the predetermined area of the RAM 513 (step 6).
3).

As described above, when the partial area zero emission mode is selected, either the motor mode or the engine mode is stored in the path storage area of the RAM 513, so that the motor drive section and the engine drive section are set in advance. To be done. Then, when the hybrid vehicle starts traveling, the main control unit 41 determines which point on the traveling route is traveling from the absolute position detected by the absolute position detection unit 44, and from the corresponding mode storage area, Select a driving mode. That is, in the motor drive section (engine OFF section), the engine 1 is controlled by the engine control mechanism 474.
Is stopped, and the clutch 7 is released by the clutch control unit 475. And the inverter 47
The mode 10 is driven only by the electric power supplied from the battery 741 via the vehicle 1 to run.

On the other hand, in the engine drive section (section in which the engine can be turned on), the generator 6 is operated by driving the engine 1 with the clutch 7 disengaged in the first engine mode, and the motor 10 is driven by the generated power. Drive while driving. In this case, the engine 1 is used as a constant rotation or constant torque characteristic to burn the engine 1 with a lean burn, and to travel with substantially less exhaust gas. In the engine drive section, when the rotation speed of the engine 1 becomes a high rotation speed, the second engine mode may be switched to the traveling. Then, in the engine drive section, if the information indicating that it is the charging section is stored in the mode storage area, the main control unit 41 operates the engine 1 at the rotation speed increased from the rotation speed calculated in step 63. To drive. This allows the generator 6
The electric power generated by the inverter 10 is converted into direct current by the converter 473 and then converted into direct current by the inverter 10 as electric power for driving the motor 10.
Is also supplied to the battery 471 and is charged as a shortage of the battery 471. In addition, while the vehicle is traveling, the display device guides the route to be traveled,
Alternatively, the route guidance may be performed by outputting a guidance voice from the voice output unit 452.

In the above-described embodiments, the motor mode and the engine mode are described as the driving modes. However, the engine independent mode in which only the engine is driven is set, and the engine driving mode is performed in the engine independent mode. May be. In the engine only mode, the inverter 4
A switch portion (not shown) 72 disconnects the connection between the inverter 472 and the coil 28 of the motor 10. Further, the clutch control unit 475 connects the clutch 7 and the converter unit 46 includes a switch unit (not shown).
And the stator coil 12 of the generator 6 are electrically connected. At this time, the main control unit 41 charges the battery 471 by connecting a switch (not shown) of the converter 46 when the information indicating the charging section is stored in the mode storage area.

In step 51, the densely populated area is detected from the data amount of the map data of the lowermost layer. As road data 435, data for determining the driving mode is stored in each road, and step 52 is performed. The engine off section of may be determined. further,
When determining the engine OFF section, even in the engine ON section, for example, starting after a signal waiting may be performed in the motor mode, and the engine OFF section for that may be added. Engine off for this start
The section may be a fixed ratio according to the distance of the engine ON section. Alternatively, the number of intersections existing in the engine ON section may be obtained from the intersection data 434, and the distance obtained by multiplying the number of intersections by a predetermined number may be set as the engine OFF section.

In the embodiment described above, as shown in FIG. 1, the hybrid type vehicle in which the clutch 7 can switch between the parallel type and the series type has been described, but the present invention is not limited to this configuration. Without
It may be a parallel type hybrid vehicle or a series type hybrid vehicle. in this case,
The engine in the engine drive section contributes only to power generation in the case of a parallel type hybrid vehicle, and contributes only to running in the case of a series type hybrid vehicle.

[0038]

According to the hybrid type vehicle of the first aspect, when traveling on a predetermined traveling route, the traveling mode can be preset according to the traveling environment.
According to the hybrid type vehicle of the second aspect, the electric power of the power generation means is generated by the driving force of the engine while traveling in the engine drive section, and the battery is charged with the generated electric power. Therefore, when the traveling mode is set in advance, the battery is used. It is possible to prevent the lack of capacity.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a drive unit of a hybrid vehicle according to an embodiment of the present invention.

FIG. 2 is a circuit configuration diagram of the hybrid vehicle of the above.

FIG. 3 is a flowchart of a drive distribution process for determining drive distribution between an engine and a motor by the hybrid vehicle of this embodiment.

FIG. 4 is a flowchart of drive distribution processing for determining drive distribution between an engine and a motor by the hybrid vehicle according to the present embodiment.

FIG. 5 is a flowchart of drive distribution processing for determining drive distribution between an engine and a motor by the hybrid vehicle of the present embodiment.

FIG. 6 is a flowchart of drive distribution processing for determining drive distribution between an engine and a motor by the hybrid vehicle according to the present embodiment.

[Explanation of symbols]

 1 engine 6 generator 7 clutch 10 motor 41 main control unit 44 absolute position detection unit 431 input device 433 map data 434 intersection data 435 road data 451 display device 452 voice output unit 465 gasoline sensor 466 voltage sensor 471 battery 472 inverter 473 converter 474 engine Control mechanism 475 Clutch control unit

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shoji Yokoyama 2-19-12 Sotokanda, Chiyoda-ku, Tokyo Within Equus Research Co., Ltd. (72) Inventor Kiyoshi Kawamoto 2-19, Sotokanda, Chiyoda-ku, Tokyo No. 12 Stock company Equus Research

Claims (2)

[Claims] 1. A hybrid vehicle including a motor and an engine for generating a driving force of the vehicle, the hybrid type vehicle traveling by selecting a motor mode traveling by the motor and an engine mode using the engine as a traveling drive source. Road information storage means that stores road information that can be stored, route storage means that stores the route that the vehicle should travel, and road information that corresponds to the travel route that is stored in this storage means. A motor drive section to run,
Mode determining means for determining in advance the engine drive section traveling in the engine mode, mode storing means for storing the traveling mode determined by this determining means, and detecting the current position on the travel route stored in the route storing means. And a mode selection means for selecting the traveling mode stored in the mode storage means in correspondence with the current location on the travel route detected by the current location detection means. Type vehicle. 2. A power generation means for generating power by the driving force of an engine, a capacity detection means for detecting a capacity of a battery for supplying electric power to a motor, and a battery capacity detected by the capacity detection means for use in the mode determination means. A judging means for judging whether or not it is possible to travel in the determined motor drive section in the motor mode, and when the judging means judges that the vehicle cannot travel, the vehicle travels in the engine drive section decided by the mode determining means. The hybrid vehicle according to claim 1, further comprising: a charging unit that charges the battery by causing the power generation unit to generate power.