Nissan Note (Versa Note) Teardown (Part 1)

Major safety technology and advanced driver assistance systems

2014/09/24

Summary

Nissan Note
The Nissan Note on display at
Nissan Global Headquarters Gallery
* Click on the photo for a larger image.

 The Nissan Note teardown was conducted at the Benchmarking Center of the Hiroshima Prefectural Technology Research Institute in Kure City, Hiroshima, Japan. The event was organized by the Automotive Technology Innovation Center of the Hiroshima Industrial Promotion Organization. The X DIG-S grade Nissan Note was used in the benchmarking event. It had an Around View Monitor with a Moving Object Detection (MOD) function.

 The first day of the event, August 22, 2014, was spent for preliminary bulk disassembly and detail teardown was conducted on August 25 through 27. Nearly all components were dismantled during the bulk disassembly. The engine and supercharger were disassembled during the detail teardown.

 This first report contains a list of suppliers of main components and introduces major safety technology and advanced driver assistance systems that are adopted in the Nissan Note. The Lane Departure Warning (that uses a multi-sensing front-mounted camera to monitor the frontal view) and emergency braking are among the advanced driver assistance systems. Safety technology includes the Around View Monitor with MOD function that uses four wide angle cameras to monitor the vehicle's surroundings.

 Teardown of the engine, supercharger and other drive units will be reported in Nissan Note Teardown (Part 2).


Archived teardown reports:

Honda Accord Hybrid (Feb. 2014)
  Part 1: PCU and vehicle chassis
  Part 2: Battery and electric servo brake
  Part 3: Drive unit

Honda Fit Hybrid (Dec. 2013)
  Part 1: Battery components & brake system
  Part 2: Engine and transmission

Toyota Aqua (Prius c) (Nov. 2012)
  Part 1: Part suppliers and battery components
  Part 2: Hybrid systems behind the 35.4km/liter (53 mpg city) car

Nissan Leaf
  Part 1: Benchmarking systems and components for EV (Mar. 2012)
  Part 2: Main components disassembled (Sep. 2012)
  Part 3: Body cutaway (Nov. 2012)



Main specifications of Nissan Note

 

Model name DBA-E12
Body type 5-seater 5-door compact hatchback
Dimensions Length: 4,100 Width: 1,695 Height: 1,525 mm with 2,600mm wheelbase
Curb Weight S: 1,030kg,X: 1,040kg,S DIG-S: 1,070kg,X DIG-S/MEDALIST: 1,090kg
Gross Vehicle Weight S: 1,305kg, X: 1,315kg, S DIG-S: 1,345kg, X DIG-S/MEDALIST: 1,365kg
Fuel efficiency (JC08 test mode) S/X: 22.6km/L, S DIG-S: 25.2km/L, X DIG-S/MEDALIST: 24.0km/L

Note) The X DIG-S grade of the Nissan Note was used during the benchmarking activity.

 

 



Key parts suppliers

 

Component Supplier
Engine 1.2 -liter (1,198cc) inline 3-cylinder
direct-injection gasoline engine
Type: HR12DDR
Aichi Machine Industry Co., Ltd.
Cylinder head cover Ahresty Corporation
Cylinder block
Chain case
Supercharger Eaton Corporation plc
Air control valve Aisan Industry Co., Ltd.
Electromagnetic clutch for supercharger Ogura Clutch Co., Ltd.
Intercooler for supercharger MAHLE Behr GmbH & Co. KG
Housing Ahresty Corporation
Outlet duct ROKI Co., Ltd.
Air cleaner
Air intake duct Excell Corporation
Air-flow meter Hitachi Automotive Systems, Ltd.
Throttle body
Engine management system (EMS)
Ignition coil Hitachi Automotive Systems Hanshin, Ltd.
Swirl control valve Denso Corporation
Fuel injection device (direct injection)
High-pressure injector
High-pressure fuel tank
Fuel pressure sensor
Radiator MAHLE Behr GmbH & Co. KG
Water pump for engine cooling Magna International Inc. 
Thermostat Nippon Thermostat Co., Ltd.
Exhaust gas recirculation (EGR) valve Mitsubishi Electric Corporation
Starter motor
Belt drive system Gates Corporation
Tensioner bearing NSK Ltd.
Pre-silencer Futaba Industrial Co., Ltd.
Silencer
Canister Mahle GmbH
Transmission Xtronic CVT with auxiliary gearbox (type: JF015E) Jatco, Ltd.
Housing Ahresty Corporation
Side cover
Oil pump JTEKT Corporation
Housing Hiroshima Aluminum Industry Co., Ltd.
Transmission ECU Hitachi Automotive Systems, Ltd.
Battery Battery for start-stop system Shin-Kobe Electric Machinery Co., Ltd.
Alternator Mitsubishi Electric Corporation
Air conditioning Compressor Calsonic Kansei Corporation
HVAC system
Rubber refrigerant hose Bridgestone Corporation
Condenser MAHLE Behr GmbH & Co. KG
Safety equipment Rear brake drum Kiriu Corporation
Rear brake disc ATE (Continental AG)
Brake oil pump
ABS
Yaw rate sensor Denso Corporation
Driver, front seat occupant's airbags Takata Corporation
Seatbelt
Brake hose Hitachi Metals, Ltd.
Multi-sensing front camera
(for emergency brake and lane departure warning)
TRW Automotive Holdings Corporation
Brake booster housing Tokico (Hitachi Automotive Systems, Ltd.)
Advanced Driver Assistance System (ADAS) control unit Hitachi Automotive Systems, Ltd.
CMOS camera for Around View Monitor Sony Corporation
ECU for Around View Monitor (image processing unit) Clarion Co., Ltd.
Sonar (ultrasonic sensor) Valeo S.A.
Horn Miyamoto Electric Horn Co., Ltd.
Interior/exterior
devices
Windshield, side and rear glass Central Glass Co., Ltd.
Side glass Nippon Sheet Glass Co., Ltd.
Front/rear wiper systems Mitsuba Corporation
Wiper motor
Wiper arm
Windshield washer Jideco (Mitsuba Corporation)
Head lamp Ichikoh Industries, Ltd.
Rear combination lamp
Fuel tank Inergy Automotive Systems
Cockpit module Calsonic Kansei Corporation
Engine switch Alps Electric Co., Ltd.
Accelerator pedal CTS Corporation
Pedal switch Niles Co., Ltd. (Valeo S.A.)
Steering wheel levers
Power-assisted window switch
Door mirrors Samvardhana Motherson Reflectec (former Visiocorp plc)
Auto-dimming mirror with display Gentex Corporation
Room lamps CML Innovative Technologies (Grupo Antolin-Irausa, S.A.)
Ratchet lifter for driver's seat Brose Fahrzeugteile GmbH & Co. KG
Back door stay Suspa, Inc.
Door and trunk interior trim Kasai Kogyo Co., Ltd.
Extractor TRW Automotive Holdings Corporation
Others Electric power steering (EPS) JTEKT Corporation
Electric power steering (EPS) ECU Mitsubishi Electric Corporation
Steering lock Alpha Corporation
Driveshaft GKN Driveline Japan Ltd.
Shock absorbers Tokico (Hitachi Automotive Systems, Ltd.)
DC-DC converter for start-stop system
(voltage stabilizer)
Panasonic Corporation
Wire harness Sumitomo Electric Industries, Ltd.
Fuel pump clamp Hans oetiker Maschinen-und Apparatebau Ges.m.b.H.
Tire Bridgestone Corporation

 

 



Before disassembly

 

A front-left view of the Nissan Note A rear-right view of the Nissan Note
A front-left view of the Nissan Note. The white arrows at the front bumper point to the sonar devices (ultrasonic sensors) supplied by Valeo in Germany. Four sonar devices, including one at the front right of the vehicle, are used to detect obstacles in front of the vehicle. A rear-right view of the Nissan Note. The white arrows at the rear bumper point to the sonar devices supplied by Valeo in Germany. Four sonar devices are used to detect obstacles in back of the vehicle.

 

 



Around View Monitor with Moving Object Detection (MOD) function

 

Around View Monitor  The images from the four wide angle cameras are shown in the navigation or rearview mirror display for helping the driver to park. The four images include a front view, a rear view, side blind view and a top view of the vehicle.
Moving Object Detection
(MOD) function
 When a moving object is detected by the Around View Monitor camera on the vehicle’s side, or in the direction the vehicle is travelling (front when the vehicle is moving forward, behind when the vehicle is moving backward), the driver is aurally and visually alerted. The system uses the shift gear position to determine if the vehicle is moving forward, backing up or stopped.

 

Wide angle cameras
Wide angle cameras Wide angle cameras
The arrow points to the front-mounted camera of the Around View Monitor. It is mounted in the Nissan emblem at the vehicle's front. The arrow points to the rear-mounted camera used to capture rear views. It is mounted near the license plate light at the back of the vehicle.
Wide angle cameras Wide angle cameras
The side-mounted camera used to capture side views. It is mounted under the side mirror at the right and left sides of the vehicle. The wide angle cameras removed from the Around View Monitor system. The rear-mounted camera is shown to the right and the front-mounted camera to the left. All cameras in the Around View Monitor are produced by Sony in Thailand.

 

ECU (image processing unit) for Around View Monitor
ECU ECU
The arrow in the left-hand photo points to the ECU (image processing unit) of the Around View Monitor where images from the four cameras are synthesized and processed. The engine is located to the right of the left-hand photo. The ECU is produced by Clarion and mounted under the driver's seat. The right-hand photo shows the inside of the ECU.

 

Auto-dimming rearview mirror with display
Auto-dimming rearview mirror with display Auto-dimming rearview mirror with display
Imagery from the Around View Monitor is shown in the display of Gentex's auto-dimming rearview mirror. The right-hand photo was taken at Nissan Global Headquarters Gallery. The switch at the center bottom of the mirror ("MIRROR" pointed by the red arrow) is used to turn on and off the monitor display and switch between images. The auto-dimming mirror with a display allows the Around View Monitor to be fitted in vehicles without a car navigation feature.
Auto-dimming rearview mirror with display Auto-dimming rearview mirror with display
Inside of the auto-dimming mirror with a display. The rearview mirror is a two-way mirror and is hidden in back of the center right in the left-hand photo. When the display in the left-hand photo (pointed by an arrow) is turned on, the imagery from the Monitor will be shown in the left-side of the mirror. The right-hand photo shows the back of the board on which the display (shown in the left-hand photo) is mounted.

 

 



Lane Departure Warning, Emergency Brake, Emergency assist for pedal misapplication

 

Lane Departure Warning  When the driver unintentionally drifts out of the lane, the system alerts the driver with a visual warning on the display and an audible signal. The front-mounted camera is used to recognize the lane.
Emergency brake  The system automatically decelerates the vehicle when it detects the potential for collision with a pedestrian or a vehicle ahead. When its front-mounted camera detects a risk, it calculates the distance and judges whether collision is unavoidable. If necessary, it alerts the driver with a visual warning on the display and an audible signal. If the driver fails to apply brakes, the system automatically decelerates the vehicle. The emergency brake works when the vehicle is traveling at speeds between 10km/h to 80km/h.
Emergency assist for pedal misapplication  The system automatically suppresses acceleration or decelerates the vehicle when the vehicle is moving at low speed or if it detects strong application of the accelerator despite the presence of an obstacle in the direction of travel. It uses sonar devices (ultrasonic sensors) mounted in the front and rear of the vehicle to calculate the distance to the obstacle.

 

Multi-sensing front camera
Multi-sensing front camera Multi-sensing front camera
A multi-sensing front camera supplied by TRW Automotive is mounted on the windshield (pointed by an arrow in the left-hand photo). The left-hand photo was taken at the Nissan Global Headquarters Gallery. The camera detects the lane, pedestrian and vehicle in the direction of travel. The system calculates the distance when it detects a pedestrian or a vehicle. The multi-sensing front camera is used in the Lane Departure Warning and emergency brake.

 

Sonar (ultrasonic sensor) Advanced Driver Assistance System (ADAS) control unit
Sonar ADAS
The sonar is pointed by a white arrow and the sonar ECU by a red arrow. Both components are supplied by Valeo. The ECU is installed in the driver side of the instrument panel. A total of 8 sonar devices are mounted, four in the front bumper and four in the rear bumper. The sonar is used to recognize an obstacle in front or back of the vehicle. It also calculates the distance to the obstacle when one is detected. Sonar is used in the emergency assist for pedal misapplication. The ADAS control unit supplied by Hitachi Automotive Systems is installed in the driver side of the instrument panel. It controls the engine, brakes, etc., based on signals from the multi-sensing front camera and sonar.

 

 



Crash-compatible Zone Body

 

Crash-compatible zone body  In an event of collision, the energy of impact is absorbed by the crushable zone (engine room and trunk) to maintain the original space of the safety zone (high-strength cabin) to protect the occupants. In addition, a minimum gap is kept between the engine components and the hood. The wipers and lamps are designed to fall off easily by the impact of collision. These also help reduce damage to the pedestrian.

 

Crushable zone (impact-absorbing structure)
Crushable zone Crushable zone
The left-hand photo shows the engine room with the hood and bumper removed. The right-hand photo shows the engine room with the powertrain units removed. The white arrow in the left-hand photo points to the large bumper reinforcement. The red arrow in the right-hand photo points to the front side member and the blue arrow to the dashboard cross-member. In the event of collision, the impact is distributed effectively by the large bumper reinforcement to the side members. As a result, the impact in the engine room is absorbed to minimize the impact being transmitted from the dashboard cross-member to the cabin side.

 

Safety zone (high-strength cabin structure)
Safety zone Safety zone
The Nissan Note after the teardown. In an event of frontal collision, the impact is absorbed by the crushable zone. The post-impact load is distributed in three directions to A-pillar, side sills and the door waist beam concealed in the door below the side window glass. The load distribution suppresses the deformation of the cabin structure to maintain space for occupants. The cockpit and front seat area are shown without the interior components. The floor is formed by a floorboard member (pointed by white arrow), tunnel member (pointed by red arrow), etc. Load is distributed by the multi-frame structure.

<Automotive Industry Portal MarkLines>