Tokyo Motor Show 2017: Exhibitions from Bosch, Denso, Aisin, and Mitsubishi Electric

Support for the three fields of electrification, autonomous driving, and connectivity



The booths of automakers and parts manufacturers had a focus on electrification, autonomous driving, and connectivity at the 2017 Tokyo Motor Show (October 25 to November 5 2017, Tokyo Big Sight).


Tokyo Motor Show 2017
Preview day, Tokyo Big Sight

This report will cover Bosch, Denso, Aisin, and Mitsubishi Electric's exhibitions, which prominently featured exhibits related to these three fields. Major displays included EV drive systems such as the eAxle, motors and inverters relating to electrification, positioning systems and vehicle control systems for autonomous driving, services utilizing over-the-air (OTA) updates and V2X, as well as numerous products and technology like next-generation human machine interface (HMI) for connectivity. Major exhibitions are listed in the following chart.

There is a global trend towards adopting EVs that is being lead primarily by Europe and China. As can be seen from their exhibitions, Japanese OEMs, which lead the market with hybrid vehicles (HVs), are rapidly preparing to support EVs in anticipation of various future changes in the market.

Because of the difficulty in realizing autonomous driving and connectivity through developing products and services alone, various companies are now collaborating with domestic and overseas companies, including those from different industries, and have been conducting demonstration experiments in collaboration with specialist institutions while also introducing multifaceted initiatives.




Major announcements and exhibitions related to electrification, autonomous driving, and connectivity


Electrification Autonomous driving Connectivity


eAxle EV drive system

Vehicle position estimating technology, high-accuracy maps, Fail-operational EPS

OTA updates, preventive diagnosis, eCall automated emergency call service, next-generation head unit


SiC inverter, battery ECU

Stereo image sensor, millimeter wave radar

Analysis platform, preventive safety, service platform, preventive diagnosis, cyber security


1-Motor FWD hybrid transmission, eAxle

Vehicle Dynamics Integrated Management, automated valet parking

Hospitality service, location information services

Mitsubishi Electric

ISG system for 48V hybrid vehicles

Autonomous driving technology demonstration vehicle, centimeter level augmentation service (CLAS), high-accuracy 3D mapping technology

Next-generation car navigation systems utilizing AI, onboard gateway, driver monitoring

Related reports:
CEATEC JAPAN 2017: Driver Monitoring Technologies (November 2017)
Two autonomous driving trends: Level 3 for highways and Level 4 for community roads (August 2017)
JSAE Exposition 2017: Advances in electric power steering (July 2017)
Dynamic Map to generate 3D maps for Japan's expressways by 2018 (February 2017)

Bosch: Automation/networking/electrification solutions for future mobility

Bosch introduced products and technology for creating accident-free, stress-free, and emissions-free mobility. In addition to showcasing a demo car where guests could experience OTA software updates and the eCall automatic emergency call system, the company also displayed EV systems such as the eAxle and batteries. Additionally, Bosch showcased its electronic power steering (EPS) system for high-precision autonomous driving and a next-generation head unit for the first time in Japan.


Bosch solutions for future mobility

Automation solutions for accident-free mobility

Bosch Road Signature (Vehicle position estimating technology)
Bosch is currently developing Bosch Road signature technology, which is capable of ascertaining the vehicle's location within lanes with the precision of a few centimeters, in order to achieve autonomous driving. The system processes data acquired from the vehicle's radar and cameras in Bosch's cloud and uses it to create high-precision maps for autonomous driving through collaboration with a map making partner company's cloud.
Radar Road Signature can leverage the radar's strengths to acquire high-precision data, even in adverse conditions that cameras usually struggle to cope with like inclement weather.

Exhibited products: Video sensors / Ladar sensors
Display Panel

EPS system for highly autonomous driving
A fail-operational electronic power steering (EPS) system featuring a redundant design for highly autonomous driving (HAD). The motor and ECU's electronic circuit feature a dual design, where if one system fails, the other independent system maintains a minimum of 50% of functions, allowing vehicles to continue driving safely.

Servolectric - EPSapa (paraxial servo unit)
An EPS for vehicles that require significant effort for steering such as SUVs and pickup trucks. The EPS can also be used for sports cars, upper-class mid-sized vehicles, and luxury vehicles. The fail-operational function is expected to be implemented beginning with this type of EPS.

Networking solutions for stress-free mobility

Connected demonstrator
Attendees could experience various connected services such as OTA updates for onboard software, preventive diagnosis, and the eCall automated emergency call service.

Convergence - Next generation head unit
A human-machine interface (HMI) concept that enables integrated control of multiple displays such as the instrument panel and central console with a single computer.
Bosch will develop a comprehensive HMI that can support the increase in information exchanged between vehicles and passengers and allow for stress-free operation.
Exhibited product / Computing platform

A touch screen that provides haptic feedback.
As applications can be operated without looking at the screen, drivers will not have to look away from the road, leading to an increase in safety.
Exhibited product

Electrification solutions for emissions-free mobility

EV station
Bosch displayed a total system for EVs that includes the eAxle (electronic axle), vehicle control unit (VCU), battery, DC/DC converter, iBooster (electronic brake booster), and thermal management system.

The eAxle is an axle for e-mobility that integrates a transmission, power electronics, and motor in one compact unit.
Not only does it increase efficiency, it also helps decrease costs and development steps.



Demonstration car for connected services
Interior / Display Panel

EV station (EV drive system)
eAxle / battery / converter / VCU



Servolectric (Motor/ECU)
Fail operational EPS system

Servolectric (paraxial servo unit)

Denso: Efficient, connected, automated driving technology for the mobility society of the future

Denso has designated the following three fields as depicted in the chart below as Core Technologies for Future Mobility and introduced its products and technologies with VR and mock vehicle.


Denso Three technical fields to focus on

Efficient Driving

The company aims to develop electrification technology for various forms of mobility.
By combining and managing thermal, electric, and kinetic energy, Denso aims to realize a driving experience that allows for drivers to drive exactly as they wish while also maximizing energy efficiency.

Connected Driving

By connecting various devices, new services and vehicles will work cooperatively to bring fresh value to transportation.
Denso will also develop its cyber security technology to protect people and vehicles from new threats that will emerge due to expanded connectivity of devices.

Automated Driving

Denso will develop more advanced sensing technology, AI, and information communication technology to increase safety and achieve travel freedom.


At the TOKYO CONNECTED LAB exhibition, Denso showcased its analysis platform, which preemptively detects and avoids accidents and anomalies on the road ahead; a service platform that provides a diagnosis of vehicular information and provides replacement parts in advance; and security measures such as OTA software updates to counter cyber-attacks (exhibition panels). Denso also displayed its stereo image sensor and millimeter wave radar that is equipped in the new Lexus LS to highlight its cooperative efforts with collaborators.



Product lineup

Stereo vision sensor / Millimeter wave radar


At a press briefing, Denso's President Arima spoke about eco-driving and autonomous driving. Regarding eco-driving, Denso will begin production of SiC inverters around 2020. President Arima also introduced the company's energy management technology such as its thermal management system and battery ECU. For autonomous driving, Denso has developed and provided various sensors in order to realize 360-degree recognition. In the three years leading up to 2020, Denso plans to invest roughly JPY 500 billion in electrification and autonomous driving.



  Motor generator/ PCU / Battery ECU/ Sensor /Monolithic carrier

HVAC / Heat pump air conditioning system



Engine ECUs

Information & Safety
Touch display / Stereo Vision Sensor / Millimeter wave radar / Driver monitor

Aisin Group: Prioritizing development of technologies for zero-emissions, autonomous driving, and connectivity

In order to respond to structural changes in the automobile industry, the Aisin Group will focus on the three fields below. It has identified these as next-generation areas of growth. In a press briefing, Aisin Seiki's President Ihara described the company's technological progress in these fields.


Aisin Group Three fields of focused development


1-Motor FWD hybrid transmission
The 1-Motor FWD hybrid transmission places a motor and clutch where torque converters would normally be in automatic transmissions.
By detaching the engine and transmission with a clutch, the 1-Motor FWD hybrid transmission allows for electric driving that significantly increases fuel consumption.
The product is scheduled to go into mass production in FY 2018.
Press briefing image

Electric 4WD drive unit (eAxle)
The output of the electric 4WD (e-4WD) featured in the current generation Prius has been increased.
Not only will the eAxle be equipped in premium 4WD vehicles, but in the future, may also see use in EVs.
Press briefing image

Autonomous driving

Vehicle Dynamics Integrated Management
The Vehicle Dynamics Integrated Management system ascertains the vehicle's position and driving situation and controls the power train, suspension, steering, and brakes.
Aisin aims to realize safe and secure autonomous driving with this technology.
Press briefing image

Automated valet parking
Aisin aims to create a level 4 autonomous driving parking assist system through cooperation between vehicle control and infrastructure to realize automated valet parking at specific parking spaces for car sharing vehicles. Because in level 4 the system must ensure safety, in the early stages of the 2020s Aisin aims to establish facilities in limited parking spaces as well as in conditions where infrastructure can be controlled.
Using already popular cameras and ultrasonic sensors, Aisin is also developing an affordable system that can be equipped in popular models by making changes to parking spaces.
Press briefing image


Hospitality service
By combining actuator and passenger sensing technology as well as outdoor information and data stored in a cloud environment, Aisin will provide users a comfortable interior space.

(Hospitality service examples)
- Advanced reading of seat arrangements:
 The system, featured in a vehicle that picks up passengers using automated valet parking, will anticipate children riding in the vehicle and set up a child seat.
- Advanced reading of auto side support seats:
 When entering a curve, the system will predict lateral G forces on the driver based on corner angle and entry speed.
 The system will then provide drivers with optimal support to suit the driver's physique and a sense of security.
- Watch-over secure door system:
 When opening a door, the system will monitor the surroundings to detect bicycles coming from behind, and lock the doors until it has passed.

Location information services
The system will support drivers by taking advantage of location information utilizing technology cultivated through the development of car navigation systems as well as big data gathered from connected cars.

(Location information services example)
- When the system detects that the vehicle is approaching bumpy roads, based on location information, it will change the suspension settings beforehand to ensure a smooth, comfortable ride.



1-Motor FWD hybrid transmission
Display Panel

Electric 4WD drive unit (eAxle)
Display Panel


A demo car was exhibited in front of Aisin's booth that featured a wide range of the company's products. Products representing its four business areas of power trains, driving safety, bodies, and information and electronics were color coded for clarity.



Product lineup
Display Panel

Front part of the demonstration car


Mitsubishi Electric: Advanced electrification, autonomous driving, and connected technology for the smart mobility era

Mitsubishi Electric exhibited various advanced technologies related to electrification, autonomous driving, and connectivity, as well as products developed based on its "Feel the EMIRAI" concept. The company's concept car, the EMIRAI4, which features technology from all of these three fields, was placed at the center of the booth, and attendees could experience next-generation driver support technology such as an AR supported heads-up display (HUD), driver monitoring system, and road lighting. Moreover, the booth introduced the company's autonomous driving technology-equipped xAUTO vehicle, which is currently undergoing verification tests. In addition to footage of the vehicle driving on public roads, products it is equipped with were also introduced.



EMIRAI4 concept car
Press briefing image

xAUTO autonomous driving technology-equipped vehicle
High definition locator /V2X Communication unit /ECU 
Camera / Millimeter wave radar / Sonar


Mitsubishi Electric Technology and products for the smart mobility era


ISG system for 48V hybrid vehicles
Mitsubishi Electric developed a crankshaft-mounted integrated starter-generator (ISG)* system for 48V hybrid vehicles, which are expected to see increased use primarily in the European market.
 Mass production of the system was announced in October 2017 and it will be equipped in Daimler's Mercedes-Benz brand vehicles.
*Integrated Starter-Generator: Composed of a motor and inverter that controls it

(Characteristics of the product)
- By connecting the motor directly to the crankshaft the motor produces a higher output and generates more power than conventional belt driven starters and contributes to better fuel efficiency.
- Mitsubishi Electric's unique split-core winding technology achieves high-density by using thick coils necessary for high-current motors. This helps to achieve both a high-output motor and a slim profile that allows for the equipment to be mounted on various vehicles.
- The equipment features a newly developed transfer-molded power semiconductor module designed for 48V vehicles that helps decrease heat resistance and improve durability. The system is combined with an optimally designed cooling unit to improve cooling power and create a compact and highly reliable inverter.

Autonomous driving

Vehicle equipped with xAUTO autonomous driving technology
xAUTO autonomous driving technology combines Mitsubishi Electric's original self-sensing driving technology and infrastructure-based driving technology.
- Self-sensing driving technology: Advanced technology that combines peripheral-sensing equipment such as millimeter wave radars that monitors the front and rear of a vehicle with a forward-monitoring camera.
- Network-based driving technology: Technology combining centimeter level augmentation service (CLAS) signals received from the Quasi-Zenith Satellite System (QZSS) and high-accuracy 3D mapping technology.

Since May 2016 Mitsubishi Electric has conducted over 300 hours of verification tests on highways and confirmed that autonomous driving can be used even in varied road conditions or situation with low visibility, such as heavy fog or snowy roads.
Additionally, starting in September 2017, Mitsubishi Electric began implementing verification tests using CLAS signals from the QZSS on highway roads. By combining peripheral sensing technology such as vehicle driving information and forward-monitoring cameras with high-precision location technology, which can recognize the vehicle's location in real-time in areas like tunnels where CLAS signal reception is poor, Mitsubishi Electric has proven that autonomous driving using network-based driving technology is possible.

Centimeter level augmentation service (CLAS)
Since Japan does not have its own location information system it uses the U.S.'s GPS satellite positioning system. The Michibiki Quasi-Zenith Satellite System designed, developed, and manufactured by Mitsubishi Electric will be Japan's first original satellite positioning system. The first satellite was launched in September 2010, followed by a second, third, and fourth scheduled for 2017. In order to maintain a position almost directly over Japan (quasi-zenith), the satellites will orbit in an asymmetrical figure eight pattern, going from Japan to near Australia. One Michibiki unit will stay over Japan for approximately eight hours. With four Michibiki units in orbit, there will constantly be two units over Japan. Once signals are being sent from the QZSS, it will be possible to provide high-precision location information even between buildings and in mountainous areas. Although GPS has a margin of error of approximately ten meters, by sending signals that compensate for the GPS, Mitsubishi Electric can provide precise and stable position information services with a margin of error of a few centimeters.
CLAS display panel

In August 2017, Bosch, Geo++, Mitsubishi Electric, and u-blox agreed to establish a joint venture called Sapcorda Services in Germany that will provide high-precision GNSS* location services for the mass market. By aiming to ensure mutual compatibility with quasi-zenith satellite systems, the joint venture will provide centimeter-level GNSS positioning services that can be used globally.
*GNSS: Global Navigation Satellite System

High-accuracy 3D mapping technology
Mitsubishi Electric is developing high-precision positioning terminals, 3D mapping technology, and CLAS to realize a "high-precision positioning society." Mitsubishi Electric has been developing the Mobile Mapping System (MMS) since before the launch of the Michibiki QZSS as equipment for efficiently creating high-precision maps. MMS can automatically create maps by extracting the necessary details measured from its 3D laser point cloud and camera images and thereby efficiently create and dynamically update maps essential for autonomous driving.
MMS display panels: 1 / 2

In October 2017, Mitsubishi Electric announced it had agreed to collaborate with HERE to increase the usage of high-precision positioning services. As the importance of high-precision map data and high-precision vehicle positioning information increases for the development of ADAS and autonomous driving, the two companies will provide high-precision positioning services utilizing the high-precision maps and the cloud position information service "Open Location Platform" maintained by HERE, as well as the "High-Precision Locator" developed by Mitsubishi Electric, which can identify vehicle locations with high precision.


Next-generation car navigation systems utilizing AI
Next-generation car navigation systems that utilize AI will be capable of voice recognition through use of a cloud server and high-precision positioning thanks to the QZSS.
Exhibited products / Display Panel

Vehicle-mounted gateway system
The vehicle-mounted gateway system is capable of OTA software updates, and is able to detect abnormalities in the vehicle by linking with a cloud server or in vehicle communications through remote monitoring.
Exhibited products / Display Panel

Driver-monitoring display
The driver monitoring display utilizes a near-infrared camera built into the display to monitor passengers and conducts voice-operated equipment operation assistance based on detection results.
Exhibited products / Display Panel

The knob-on-display is a center display that allows users operate it via a touch screen or control knob.
Exhibited products / Display Panel




48V ISG system
Display Panel / ISG system

Electrification system
ECU / BMS / Charger/ Motor / Inverter
Display Panel / Motor & Inverter



Mobile Mapping System (MMS)

Michibiki Quasi-Zenith Satellite System
(Exhibited at CEATEC 2017)



EV, Electrification, Autonomous driving, ADAS, Connected, Connectivity, 48V, EPS, OTA, LiDAR, 3D map, Bosch, Denso, Aisin, Mitsubishi Electric

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