JPH06187595A - Hybrid type vehicle - Google Patents

Abstract

PURPOSE:To provide a hybrid type vehicle capable of travelling adapted to the environment required according to the position on the travelling road. CONSTITUTION:A travelling road position detecting section 14 detects the present position of the vehicle, detects the position on the travelling road based on the intersection data, node data and road data or the like, supplying the corresponding mode switching car speed Vz to a controller 12. The controller 12 changes the value of a RAM 123 to the supplied mode switching car speed Vz, and switches the motor mode for only motor, engine mode for only engine and mode for the both of them according to the travelling state such as the mode switching car speed Vz after the change, present car speed, and the travelling state of slottle opening or the like. The mode switching car speed Vz is set by the surrounding environment of the travelling road position, for example, the city, outskirts, expressways, tunnels or the like. Thus the travelling adapted to the environment is possible.

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 an electric motor and an engine as a drive source, and more particularly to a hybrid type vehicle which travels while selecting a drive source according to a traveling position on each road.

[0002]

2. Description of the Related Art A conventional engine that can easily supply fuel,
A hybrid vehicle that is driven by a clean electric motor as energy has been proposed (Japanese Patent Laid-Open No. 56-1).
32102). In this hybrid type vehicle, the vehicle driving states such as the accelerator opening degree and the vehicle speed are detected to control the sharing of use between the engine and the electric motor. However, the sharing of use of the engine and the electric motor in this hybrid vehicle is uniquely controlled based only on the driving state of the vehicle, and the environment surrounding the vehicle has not been taken into consideration. For example, even in urban areas with strict emission regulations, in somewhat loose suburbs, and in expressways, they were all controlled under the same conditions. For this reason, the frequency of use of the electric motor has increased extremely, or conversely, the frequency of use of the engine has increased, and the balance as a hybrid vehicle has not been balanced.

Therefore, a hybrid type vehicle designed to solve such a problem is disclosed in Japanese Patent Laid-Open No. 63-232027.
It is provided in the Gazette. This vehicle includes an electronic control circuit that detects the current position of the vehicle and that controls the drive of the engine and the electric motor based on the drive characteristic conversion table according to the region. The electronic control circuit determines whether the detected current position is within the designated area, selects a conversion table according to the area, and controls the drive of the engine and the electric motor based on the selected conversion table. Change the usage ratio of the engine and the electric motor. That is, outside the designated area, the vehicle runs in the same way as a general engine car, and within the designated area, the vehicle is driven in accordance with the environment by increasing the motor usage ratio and reducing the exhaust gas from the engine. Is supposed to do.

[0004]

However, in this hybrid type vehicle, although the usage ratio is changed to some extent depending on the environment, the range of the designated area is a wide area such as whether or not it is a suburb. Since it is set to, it is not possible to deal with the environment by controlling the usage ratio in a fine range, for example, for each traveling road. By the way, for example,
Environmental protection is required even when the current location is the same position on the map, such as when traveling on a highway and on a general road directly below it, or when the same road is inside and outside a tunnel. May differ, and in this case, naturally the required environment is also different. However, in the conventional hybrid type vehicle, the designated area for changing the usage ratio of the engine and the electric motor is determined only by the area on the map data.
If the detected current locations are the same, the control of the same usage ratio is performed. Therefore, it may not be possible to travel according to the required environment depending on the road or the position on which the vehicle travels.

Therefore, the present invention is a hybrid type capable of traveling in accordance with not only the position on the map data but also the road on which the vehicle is traveling and the detailed range of the traveling position on the road, etc. The purpose is to provide a vehicle.

[0006]

According to a first aspect of the present invention, there is provided a hybrid type vehicle including an electric motor for generating a driving force of the vehicle and an engine, and an electric motor mode in which the electric motor drives only the electric motor.
A hybrid vehicle that travels while switching between an engine mode that runs only with an engine according to a running state and a mode switching condition, and a current location detection unit that detects the current location of the vehicle, and a memory that stores road data about a road on which the vehicle can travel. Means, a calculating means for calculating a traveling road position on the road currently traveling from the road data stored in the storing means and the current position detected by the current position detecting means, and a traveling road position calculated by the calculating means In response to the,
The above-mentioned object is achieved by including a changing means for changing the mode switching condition.

[0007]

In the hybrid vehicle according to the first aspect, the calculating means calculates the traveling road position on the currently traveling road from the road data stored in the storing means and the current position detected by the current position detecting means. Then, according to the traveling road position, the mode switching condition such as the mode switching vehicle speed Vz is changed by the changing means. Then, the vehicle travels while switching between the modes according to the changed mode switching conditions and the traveling conditions such as the current vehicle speed and the throttle opening.
By setting the mode switching condition for each environment around the traveling road position, for example, for each environment such as urban area, suburbs, highways, tunnels, etc., traveling suitable for the environment becomes possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An 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 hybrid vehicle. This hybrid vehicle mainly includes a drive unit 11 that drives the vehicle, a controller 12 that controls the drive of the vehicle, and a sensor unit 1 that detects various drive states of the vehicle.
3 and a traveling road position detection unit 14 that detects the current position of the vehicle. The drive unit 11 of the hybrid vehicle includes an engine 20. This engine 20
An engine starting device 21 is arranged in the vehicle. The output shaft of the engine 20 is connected to the input shaft of the clutch 22. The output shaft of the clutch 22 is a transmission (or speed reducer)
The clutch 23 is connected to the input side of the engine 23, and the rotation of the engine 20 is transmitted to the transmission 23 by engaging and releasing the clutch 22.

The output shaft of the transmission 23 is connected to the rotor input side of the electric motor 24, and the rotor output of the electric motor 24 is
It is adapted to be transmitted to the drive system output shaft 26. As the electric motor 24, for example, various electric motors such as a DC brushless DC motor provided with a rotor composed of a permanent magnet having 6 poles and an electromagnetic coil (stator coil) composed of windings of three phases are used. The drive unit 11 includes a battery 27 that supplies electric power for driving the electric motor 24.
As the battery 27, a lead acid storage battery, a nickel-cadmium battery, a sodium-sulfur battery, a lithium secondary battery,
Various secondary batteries such as hydrogen secondary batteries and redox type batteries, fuel cells, and large-capacity capacitors are used. The battery 27 is composed of, for example, a DC power supply of 240 [V].

The drive unit 11 also includes an engine control mechanism 28 for controlling the engine 20 by adjusting the opening of the throttle valve according to the output torque value requested by the driver. Further, the drive unit 11 includes a clutch control unit 29 that controls engagement and disengagement of the clutch 22 so that the driving forces of the engine 20 and the electric motor 24 are selectively output to the drive system output shaft 26. Drive unit 11
Is provided with an electric motor drive device 31 which converts an electric current supplied from the battery 27 into an electric current value at which a predetermined torque is generated, supplies the electric current to the electric motor 24, and controls regeneration from the electric motor 24 to the battery 27. .

The sensor unit 13 of the hybrid vehicle includes a shift lever sensor 32 for detecting the position of the shift lever and an accelerator sensor 3 for detecting the amount of depression of the accelerator pedal.
3, a brake sensor 34 that detects the amount of depression of the brake pedal, and a vehicle speed sensor 35 that detects the vehicle speed V from the rotation speed of the output shaft of the electric motor 24. The signals detected by each of these sensors are supplied to the controller 12.

The controller 12 has a CPU 121. The CPU 121 has a ROM (Read Only Memory) 122 in which various programs for controlling each unit of the driving unit 11 are stored in accordance with a signal supplied from the sensor unit 13 via a bus line such as a data bus. RAM as a working memory that stores various data
It is connected to a (random access memory) 123. The controller 12 determines the traveling state according to various detection signals supplied from each sensor, and determines the traveling mode of the hybrid vehicle. The traveling modes of the hybrid vehicle include an electric motor mode in which the electric motor 24 travels alone, an engine mode in which the engine 20 travels alone, and a combined mode in which the electric motor 24 and the engine 20 travel together. And the controller 12
Is adapted to automatically select the traveling mode of the hybrid vehicle in accordance with the depression amount of the accelerator pedal 28, the vehicle speed, and the mode switching information to be described later supplied from the traveling road position detecting section 14.

FIG. 2 shows the basic regions of the accelerator opening θ and the vehicle speed V when the controller 12 determines each traveling mode. As shown in this figure, the controller 12 selects the electric motor mode when the accelerator opening θ and the vehicle speed V are small, and selects the combined mode in which the electric motor 24 and the engine 20 are used together when the accelerator opening θ becomes large. However, when the vehicle speed increases, the engine mode is selected. That is, the controller 12
When the vehicle speed V gradually increases and becomes equal to or higher than the mode switching vehicle speed Vz, the mode is changed from the electric motor mode or the combined mode to the engine mode according to the accelerator opening degree θ at that time. Conversely, the vehicle speed V is reduced by decelerating while running in the engine mode.
Becomes equal to or lower than the mode switching vehicle speed Vz ', the mode is changed to the electric motor mode or the combined mode according to the accelerator opening θ at that time.

On the other hand, the controller 12 changes the mode to the combined mode when the accelerator opening gradually increases and becomes larger than the mode changing opening θc in the electric motor mode. On the contrary, in the combined mode, when the accelerator opening θ gradually decreases and becomes equal to or smaller than the mode change opening θc ′, the mode is changed to the electric motor mode. The mode switching vehicle speed Vz for changing the mode between the combined mode, the electric motor mode, and the engine mode is predetermined according to the road on which the vehicle is traveling and the position thereof, and a traveling road position detecting unit described later. 14 is supplied to the controller 12.

FIG. 3 shows the structure of the traveling road position detecting section 14. The traveling road position detection unit 14 mainly detects the road on which the vehicle is currently traveling and the traveling position. Then, the mode switching vehicle speed Vz determined according to the environment at the detected traveling position is supplied to the controller 12. Further, in this embodiment, the traveling road position detecting unit 14 is also configured to be usable as a navigation system that automatically selects a traveling route of a vehicle and guides the driver. Figure 3
As shown in FIG. 1, the traveling road position detection unit 14 includes an absolute position detection device 41 that detects an absolute position of a vehicle, an input / output unit 42 that inputs and outputs data, a navigation processing unit 43, and various data files. 44 are provided.

The absolute position detecting device 41 includes a GPS (Global Positio) for measuring the position of a vehicle using an artificial satellite.
A ning Sistem) receiving device 411, a beacon receiving device 412 that receives position information of beacons arranged on the road, an azimuth sensor 413, a distance sensor 414, a steering angle sensor 415, and the like are used. The GPS receiving device 411 and the beacon receiving device 412 can measure the position independently, but in other cases, the absolute position is detected by the combination of the distance sensor 414 and the azimuth sensor 413 or the distance sensor 414 and the steering angle sensor 415. To do. Here, the orientation sensor 413 is
For example, a geomagnetic sensor that detects the geomagnetic field to determine the direction of the vehicle, a gyro such as a gas rate gyro or an optical fiber gyro that detects the angular velocity of the vehicle and integrates the angular velocity to determine the direction of the vehicle, and left and right wheel sensors are arranged. Then, a wheel sensor or the like is used, which detects the turning of the vehicle based on the output pulse difference (difference in moving distance) to calculate the displacement amount of the bearing.

As the distance sensor 414, for example, a sensor for detecting and counting the number of rotations of the wheel, a sensor for detecting acceleration and integrating twice, or another measuring means is used. Further, as the rudder angle sensor 415, for example, an optical rotation sensor attached to a rotating portion of a steering wheel, a rotation resistance volume, or the like is used, but an angle sensor attached to a wheel portion may be used.

The input / output unit 42 includes a display device 421, an input device 422, a voice output device 423, a communication device 424, and a communication device 425. A current position (departure point) and a destination (arrival point) at the start of traveling are input from the input device 422. The joystick, keys, touch panel, mouse, light pen, or display device 42 is used.
Various input devices 422 are used, such as those which are combined with both sides of No. 1 to display keys and menus on the screen and input from the screen. For example, when the traveling road position detection unit 14 is used as a navigation system, the display device 421 displays a route set according to a user's request or a guide map along the traveling route. It In addition, a characteristic photograph at an intersection or the middle of the route is displayed, the remaining distance to the intersection, the traveling direction at the next intersection, and other various guide information are displayed. As the display device 421, a CRT, a liquid crystal display, a plasma display, a hologram device that projects a hologram on the windshield, or the like is used.

The voice output device 423 appropriately outputs guidance information by voice when the traveling road position detection unit 14 is used as a navigation system. For example, guidance information such as "turn right / left / go straight ahead at the intersection 300m ahead / next" is output 300m before the intersection which is the guidance point or just before the intersection. This voice guidance information can be voice recorded in advance on tape,
Synthesized sound by the speech synthesizer is used. Communication device 42
Reference numeral 5 is composed of various communication devices such as a car telephone and an FM receiver, and is configured to be able to input various data. The communication device 425 is connected to the navigation processing unit 43 via the modem 45 and supplies various data received from, for example, an information center.

The navigation processor 43 of the traveling road position detector 14 includes a CPU (not shown), a ROM storing various programs such as a navigation program, and a RAM as a working memory. The navigation processing unit 43 is connected to the absolute position detection device 41, the input / output unit 42, and each unit of a data file 44 described later. The navigation processing unit 43 uses the input device 4
When the target value is input and designated from 22, various data stored in the data file 44 is read according to the navigation program stored in the ROM, these data are arithmetically processed and stored in the RAM, and necessary information is input. The mode switching vehicle speed Vz is supplied to the controller 12 while being supplied to the output unit 42.

The data file 44 of the traveling road position detecting unit 14 includes a drawing map data file 441, an intersection data file 442, a node data file 443, a road data file 444, a searched route data file 445,
And a photo data file 446, and other data files 447 in which information for various regions such as hotels, gas stations, tourist information, etc. in each region are stored. These files are, for example, floppy disk, hard disk, CD-ROM, optical disk,
Various storage devices such as magnetic tapes, IC cards and optical cards are used. Note that each file has a large storage capacity, for example, it is preferable to use a CD-ROM, but individual data such as other data files and data for each area are I
A C card may be used.

The drawing map data file 441 stores drawing map data drawn on the display device 421. This drawing map data is stored as a hierarchical map, for example, drawing map data for each layer such as Japan, Kanto region, Tokyo, and Kanda from the highest layer. And each drawing map data, for example, there are various data such as coastline node sequence, prefectural border node sequence, national road node sequence, highway node sequence, national road number, city name, etc.
A map will be drawn on the display device 421. The photograph data file 446 stores photographs of each intersection and characteristic landscapes that can be seen while going straight ahead, corresponding to the photograph numbers. The photographic data is stored as digital or analog data depending on the format of the display device 421, or in the form of negative film or the like.

On the other hand, what is used for the route search is road network data composed of intersection data, node data and road data stored in each of the intersection data file, the node data file and the road data file. Figure 4
Shows an example of a road network. As shown in this figure, each file will be described by taking a road network consisting of intersection numbers I to IV and road numbers as an example. Figure 5
Is an intersection data file 442 for the road network of FIG.
It represents the contents of. As shown in FIG. 4, the intersection data file 442 corresponds to each of the intersection numbers I to IV, the intersection name, the latitude and longitude of the intersection, and the first of the roads starting from the intersection. The road number with the smallest number, the road number with the smallest number among the roads ending at the intersection, and the presence / absence of a signal are stored as intersection data.

FIG. 6 shows the contents of the road data file 444 for the road network. As shown in FIG. 6, the road data file 444 includes road numbers
Corresponding to each of, the intersection number of the start point, the intersection number of the end point, the next number among the roads with the same start point, the next number among the roads with the same end point, the thickness of the road,
The prohibition information, the guide unnecessary information, the photo number of the photo data described later, the number of nodes, the start address of the node sequence data, the length of the road, the mode switching information and the like are stored. The mode switching information stores the distance (m) from the starting point of the road at the starting point and the ending point of each section and the mode switching vehicle speed Vz (described later) in that section.

FIG. 7 shows the contents of the node data file 443. As shown in FIG. 7, the node data file 443 stores node data including information about pedestrian crossings and tunnels that can be detected by sensors at characteristic points on the course. The node data file consists of east longitude, north latitude, attributes, etc., and as is clear from the road data, the unit of road number is a plurality of nodes. That is, the node data is data on one point on the road, and when the one connecting the nodes is called an arc, the road is expressed by connecting the arcs between the plurality of node strings. For example, regarding the road number, from the road data shown in FIG. 6, the number of nodes is 15 and the start address of the node data is 100, so the road number is composed of node data of addresses 100 to 114. It will be.

According to these road network data, for example, when attention is paid to the intersection number 1, in the course having the intersection as the starting point, first, from the starting point information of the intersection data to the road number, and then to the "same" of the road data relating to this road number. The road number is searched from "the next number among the roads having the starting point". Then, it can be determined that there is no other road number as the surrounding road because the same information on the road number is the road number on the contrary. This also applies to the end point. In addition, since the road number is prohibited in the road number in the road data, at the intersection number IV of the network shown in FIG. Is only a road number. Therefore, no guidance is required to enter this road number.

FIG. 8 shows the contents of the search route data file 445. The search route data file 445 stores intersection sequence data (FIG. 8A) and node sequence data (FIG. 8B) generated by the route search. Intersection sequence data is the intersection name, intersection number,
It consists of information such as the photo number that took the characteristic landscape of the intersection, the turning angle, the distance, etc.
As shown in FIG. 6B, the node position includes information such as east longitude, north latitude, intersection number, attribute, angle, and distance. Moreover, these data consist of only the intersections that require guidance, excluding the intersections that do not require guidance. Therefore, in navigation, this data is sequentially read and output to the input / output unit 42 corresponding to a predetermined position.

In the present embodiment, the navigation processing unit 43 accurately recognizes the running of the vehicle while accurately recognizing the current position based on the intersection data, the road data, the node data, etc. In addition to instructing an appropriate traveling route to the ground, the controller 12 selects an appropriate traveling mode according to the road on which the vehicle is traveling and the environment for traveling.

Next, the road data file 44 shown in FIG.
Mode switching vehicle speed V stored in the mode switching information of No. 4
z will be described with reference to FIGS. 9 to 11. As shown in FIG. 9, on the road on which the hybrid vehicle runs,
Various roads such as urban roads, suburban roads, highways and urban highways exist under various environments. As shown in FIG. 10, each road is divided into four sections, road sections A, B, C, and D, corresponding to the environment around the position where the hybrid vehicle travels. Vz is decided.

Now, when Va ≧ Vb ≧ Vc ≧ Vd, the road section A with the strictest conditions is an urban road with the strictest exhaust gas regulation or an exhaust gas regulation road similar to this, such as a special park such as a national park. The environmental protection zone and the road in the vicinity thereof correspond to this, and in this road section A, the mode switching vehicle speed Vz is set to Va. The road section B corresponds to an exhaust gas regulation road section such as a suburban road or a tunnel having a relatively small traffic volume and residential land. In this road section B, the mode switching vehicle speed Vz is set to Vb. The road section D with the mildest condition corresponds to a highway or a trunk road section similar to this, and in this road section D, the mode switching vehicle speed Vz is V.
It is decided to d. Then, the road section C corresponds to a section other than the road sections A, B, and D, and in this road section C,
The mode switching vehicle speed Vz is set to Vc.

On the other hand, the mode switching vehicle speed Vz 'when switching from the engine mode to the electric motor mode or the combined mode during deceleration is the mode switching vehicle speeds Va, Vb, V during acceleration.
It is set to a value that is uniformly reduced by 10 [km / h] from c and Vd. The mode switching vehicle speed V during this deceleration
z'is each mode switching vehicle speed Va ', Vb', Vc ', V
The value may be different for each d '. For example, Va '= Va
-5 [km / h], Vb '= Vb-10 [km / h],
Vc '= Vc-10 [km / h], Vd' = Vd-5
[Km / h] may be used.

Thus, road sections A, B, C and D
Is not defined by the absolute position where the vehicle is traveling or by a predetermined area unit, but is defined for each section of each road. Therefore, even if the absolute position is the same, different road sections are set if different roads are traveling. Further, even on the same road, different road sections are set if the traveling absolute positions are different. For example, even if the absolute positions are the same, the highway 61 is set to the D section as shown in FIG.
2 is set in section B. Further, as shown in FIG. 11B, even if the same highway 65 is used, the tunnel 6
Within 6, there is a section set as the section B, for example. When this tunnel is present in a part of the general road set in the section C, it may be set in the most severe section A, for example, and is set according to the environment around each road.

Each mode switching vehicle speed V in this embodiment
As a, Vb, Vc, and Vd, as shown in FIG.
Va = 80 [km / h], Vb = 60 [km / h], V
c = 40 [km / h] and Vd = 20 [km / h] are set. These mode switching vehicle speeds Va, Vb, V
The vehicle speed values corresponding to c and Vd are RO of the controller 12.
It is stored in M122. In this way, the mode switching vehicle speed Vz of the road section A in which the traveling environment is the most severe is set to Va.
= 80 [km / h], the road section
Substantially in the electric motor mode. If the vehicle travels at 80 [km / h] in this section, the engine mode is entered, but since the vehicle is traveling at a stable high speed, the amount of exhaust gas is small and there is no particular problem. In addition, the mode switching vehicle speed Vz of the road section D where the traveling environment condition is the least is Vd = 20.
By setting the speed to [km / h], the vehicle travels substantially in the engine mode in the road section.

FIG. 12 illustrates the operation of traveling while appropriately changing the mode switching vehicle speed Vz according to the traveling road and road section of the hybrid vehicle.
Navigation processing unit 43 of the traveling road position detection unit 14
Receives detection signals from various sensors of the absolute position detecting device 41 (step 1) and detects the current position of the hybrid vehicle (step 2). That is, the navigation processing unit 43 mainly calculates the current position based on the received signal from the GPS receiving device 411. If the reception condition by the GPS receiver is bad, the direction sensor 41
3, the current position calculated by dead reckoning from the detection signals from the distance sensor 414 and the steering angle sensor 415 is used supplementarily. Further, when the position information of the intersection or the like is received from the beacon receiving device 412, the position reception is given the highest priority as the current position.

When the current location of the hybrid vehicle is calculated, the navigation processing unit 43 determines that the data file 44
Map matching with various files of (1) is performed to determine the traveling road position on the currently traveling road (step 3). Then, from the mode switching information of the corresponding road number in the road data file 444, the mode switching vehicle speed Vz (Va to V
d) is read and supplied to the controller 12 (step 4).

When the controller 12 receives the mode switching vehicle speed Vz from the traveling road position detection unit 14, the corresponding vehicle speed (see FIG. 10) is read from the ROM 122 and RA
The current mode switching vehicle speed Vz value stored in M123 is compared (step 5). If the values of both mode switching vehicle speeds Vz are different (step 5; N), the mode switching vehicle speed Vz received from the traveling road position detection unit 14 is obtained.
(Step 6). When the values of both mode switching vehicle speeds Vz are the same (step 5; Y), the process proceeds to the next step 7 without changing. In the controller 12, RA
The traveling mode is determined by the value of the mode switching vehicle speed Vz stored in M123 (step 7). That is,
The controller 12 uses the accelerator sensor 3 of the sensor unit 13.
The accelerator opening degree θ supplied from 3 and the vehicle speed V supplied from the vehicle speed sensor 35 are taken in. Then, the accelerator opening θ
Is smaller than the mode change opening θc, and the vehicle speed V is RAM1.
If the vehicle speed is equal to or lower than the mode switching vehicle speed Vz stored in 23, the electric motor mode is selected and the electric motor alone runs. On the other hand, if the vehicle speed V is higher than the mode switching vehicle speed Vz, the engine mode is selected and the engine runs alone.

Here, the mode-switching vehicle speed Va is 8 for the mode-switching vehicle speed Vz in the road section A where the traveling environment is the most severe.
When it is 0 [km / h], the driving mode determined in step 7 is substantially the electric motor mode in the road section. Further, when the mode switching vehicle speed Vd = 20 [km / h] in the road section D where the driving environment condition is the least, the vehicle travels substantially in the engine mode in that road section.

According to the embodiment described above, it is possible to share the use of the electric motor and the engine, which are optimal for the use environment of the vehicle, and reduce the absolute amount of exhaust gas and energy consumption in comparison with the conventional internal combustion engine vehicle while reducing the absolute amount. The exhaust gas can be averaged over the entire region without being concentrated in the area. In addition, the use ratio of the engine and the electric motor is balanced, and the ability as a hybrid can be used uniformly.

In the embodiment described above, the mode switching vehicle speeds Va, Vb, Vc and Vd are each 80 [km / km.
h], 60 [km / h], 40 [km / h], 20 [k
m / h], these values are merely examples, and in the present invention, another different fixed value is set in the ROM 12 of the controller 12.
It is also possible to store it in 2. Further, each mode switching vehicle speed Vz may not be set to a fixed value, but may be changed in a traveling area, for example, a large area such as Hokkaido or Kyushu, or a smaller area unit. In this case, by the communication device 425 (FIG. 3) of the input / output unit 42, the mode switching vehicle speeds Va, Vb, Vc, and
You may change the value of Vd for every driving area. in this way,
Each mode switching vehicle speed Va, Vb, Vc, Vd in area unit
When changing the value of, the changed mode switching vehicle speed V
RAM 123 of the controller for a, Vb, Vc, and Vd
And is used in preference to the value stored in the ROM 122.

In the embodiment described above, only the mode switching vehicle speed Vz is changed. However, in the present invention, the accelerator opening θ for mode switching also depends on the road on which the vehicle is traveling and the environment of the traveling position. You may make it change according to it. Further, in the embodiment described above, the traveling road position detection unit 14 is configured to be usable as a navigation system that automatically selects the traveling route of the vehicle and guides the driver. However, in the present invention, the present location is detected. It may be configured to have only the function to be performed, or may be configured to have other functions.

[0041]

According to the hybrid type vehicle of the present invention,
Not only the position on the map data, but also the road you are driving,
It is possible to travel in conformity with the required environment according to the detailed range such as the traveling position on the road.

[Brief description of drawings]

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

FIG. 2 is a conceptual diagram showing a basic region of an accelerator opening θ and a vehicle speed V when the controller determines each traveling mode.

FIG. 3 is a configuration diagram of a traveling road position detection unit.

FIG. 4 is an explanatory diagram showing an example of a road network of the above.

5 is an explanatory diagram showing the contents of an intersection data file for the road network of FIG.

FIG. 6 is an explanatory diagram showing the contents of a road data file of the above.

FIG. 7 is an explanatory diagram showing the contents of a node data file of the above.

FIG. 8 is an explanatory diagram showing the contents of the searched route data file.

FIG. 9 is an explanatory diagram showing a state of a road on which a hybrid vehicle travels, the same as above.

FIG. 10 is a diagram showing a correspondence between road sections and mode switching vehicle speeds Vz, which are divided according to the environment around the position where the hybrid vehicle travels.

FIG. 11 is an explanatory diagram showing a relationship between an absolute position, a traveling road, and a road section.

FIG. 12 is a flowchart showing the operation of the hybrid vehicle, while appropriately changing the mode switching vehicle speed Vz according to the traveling road and road section of the hybrid vehicle.

[Explanation of symbols]

 11 Drive Unit 12 Controller 121 CPU 122 ROM 123 RAM 13 Sensor Unit 14 Driving Road Position Detection Unit 20 Engine 23 Transmission 24 Electric Motor 27 Battery 28 Engine Control Mechanism 31 Electric Motor Drive Device 32 Shift Lever Sensor 33 Accelerator Sensor 34 Brake Sensor 35 Vehicle Speed Sensor 41 Absolute position detection device 42 Input / output unit 43 Navigation processing unit 44 Data file

Front Page Continuation (72) Inventor Shigeo Tsuzuki 2-19-12 Sotokanda, Chiyoda-ku, Tokyo Equus Research Co., Ltd.

Claims (1)

[Claims] 1. A hybrid type, which comprises an electric motor for generating a driving force of a vehicle and an engine, and travels while switching between an electric motor mode in which only the electric motor runs and an engine mode in which only the engine runs in accordance with a running state and a mode switching condition. A vehicle, a current location detecting means for detecting the current location of the vehicle, a storage means for storing road data on a road on which the vehicle can travel, a road data stored in the storage means, and a current location detected by the current location detecting means. A hybrid type comprising: a calculating means for calculating a traveling road position on a road currently traveling, and a changing means for changing a mode switching condition according to the traveling road position calculated by the calculating means. vehicle.