Archives of Past Exhibits:Univance
2015 JSAE Automotive Engineering Exposition
Power Transfer Unit (PTU)Installed vehicle: Nissan "Juke", "X-Trail", "Qashqai", "Rogue" -Manufactured in North America, Indonesia and Thailand.
Transfer caseInstalled vehicle: Mazda "BT-50" -Also supplied to Ford. -Use of hollow shafts (image 1) and thin case walls (image 2) with reinforcing ribs created compact and lightweight structure. -Manufactured in Thailand.
Disconnect system (For FWD vehicle)-Under development -Switching back from 2WD mode to 4WD mode takes 0.1 seconds (competitors’ products require 0.15 seconds) -Control units are also made in-house
Disconnect system (For RWD vehicle)-Under development -Switching back from 2WD mode to 4WD mode takes only 0.05 seconds (competitors’ products require 1.50 seconds)
Full toroidal CVT discs and rollers-Carburizing heat treatment process improved durability, surface-pressure strength, and heat resistance. Two types of smooth toroidal surfaces are created by finishing processes. image 1： Isotropic surface image 2： Plateau surface
Companion flanges by near net shape technology-Near net shape technology reduced product weight by 20 percent and eliminated some removal processes such as electric and mechanical processing.
2014 JSAE Automotive Engineering Exposition
2013 JSAE Automotive Engineering Exposition
2012 JSAE Automotive Engineering Exposition
2010 JSAE Automotive Engineering Exposition
|Improved Fuel-efficiency System for FWD-4WD Vehicle|
|FWD 6-Speed Manual Transmission
||FWD-4WD Transfer Case|
|Motor Controlled Wet-Type Multi-Plate Torque Distribution System||Rear Differential Assembly for Disconnect System at the 2WD-position|
|RWD 6-Speed Manual Transmission||RWD-4WD Transfer Case|
|Electric Vehicles and Hybrid Electric Vehicles Gearbox|
|Cold Forging Gear||Gear Technology|
|Hollow Shaft Made by Cold Forging|
|Full-time 4WD Transfer Case||Part-time 4WD Transfer Case|
|Vehicles Installed: Skyline, Pathfinder, Infiniti (Nissan)|| Image1
|Vehicles Installed: Safari (Nissan)|
|Manual Transmission||Formsprag Overrunning Clutch|
|Vehicles Installed: Escudo (Suzuki), Caravan (Nissan)||Image1
|Vehicles Installed: Teana (Nissan), Vitz (Toyota), Legendo (Honda)|
-Light Weight and Compact:
Optimized design and minimized waste by FEM analysis.
-Increase of acceptable input torque due to FEM analysis of case/shaft durability.
-Suitable for a variety of engines offering even smoother driving thanks to triple synchro-cone system.
-Installed on Suzuki's new diesel model for Europe "Escudo" as well as Nissan's "Caravan."
Formsprag overrunning clutch for A/T
Sprag: It is made of bearing steel shaped inprecison measurement, transmits torque and makes contact overrun. Durable to high torque and highly abrasion resistant.
Retainer: It is made from a thin pressed plate, positions sprags on the peripheral side and holds them. Structure allows shorter axial direction.
Garter spring: It always works to let the sprags contact the outer and inner blades, is capable of engaging when loaded. Little drag torque is required to engage with the sprag instantly when loaded. Minimum torque is necessary during overrunning.
-Roll over is prevented by protrusion shapes of neighboring sprags. >>Technical Information
-It is composed of only 3 parts, making it possible to reduce weight and size.
-Delivered to Nissan, Honda and Toyota through Jatco.
Part-time 4WD transfer Case for SUV and Pickup Truck >>Technical Information
-Because of perfect engaging design of cogwheels and high rigid case design, it has improved NVH and durability.
-The Shift speed is in high class on account of development of high-performance shift actuator.
-It is lighter compared with permissible torque because of the most suitable design of structural parts by CAE analysis.
-Installed on mid-size light trucks, including Nissan Frontier (called Navara in Europe) and Pathfinder.
Full-time 4WD Transfer Case for SUV and passenger Car >>Technical Information
-Optimized design thanks to CAD and CAE systems.
-Wet-type multiple disc clutch built into the transfer case for optimal torque distribution to front and rear wheels.
-Optimal shape design of the transfer case and NVH analysis have improved quietness.
Hydraulic Torque Splitter for Fill-time 4-wheel Drive 'AXC' >>Technical Information
-The torque of front and rear wheels of a full-time 4WD vehicle is automatically and most efficiently distributed. The Auto Lockup Mechanism provides for easy driving even on rough roads.
-The Automatic Torque Variable Mechanism automatically switches the torque to be generated among three steps according to changes in vehicle speed.
-The Automatic Torque Constrain Mechanism constrains the generation of excessive torque, allowing for a smaller and lighter powertrain system.
-Installed on Nissan "Serena," "Wingroad," and Renault "Kangoo" and so on.
Tokyo Motor Show 2005
■Motor/Generator Gear Box for Hybrid Truck (Reference Exhibit)
Combining gearbox with motor reduced weight and parts. The motor-shaft applied an open-type bearing to minimize friction at the bearing area, and thus improved fuel consumption. Also grinding the gear could contribute to betterment of gear durability. The Company jointly developed this solution with HITACHI Ltd. Now installed in ISUZU ELF, a hybrid truck.
■Gear Box for Capacitor Hybrid Truck
This gearbox withstands high revolution speeds and is suitable for low-noise capacity hybrid truck. Installed in NISSAN Diesel Capacitor Hybrid.
■Part-time 4WD Transfer Case for Pickup Truck & SUV
Because of the perfect engage design of cogwheels or chains and high stiffness case design, it is superior in ability of low noise or shock and drivability.
■Full-time 4WD Transfer Case for SUV and Passenger Car
Delivers the rigid axle 4wheels drive type performance with the comfortable handling of a 2 wheels drive vehicle.
■Cam type L.S.D. and Actuator embedded Transfer case
Thanks to the center-differential-type full-time 4WD system with the part-time system and the cam-type LSD, this transfer enables full-time 4WD driving.
■Motor assist 4WD Gear Box
Compared to wet multi-disc clutches, it reduces friction loss during 2WD driving, and improves the clutch response at the time of switching.
■Formsprag Overrunning Clutch for Automatic Transmissions
The simple structure prevents roll over even if excessive torque is produced. The Overrunning clutch exactly distributes torque to all the sprags.
■Manual transmission for SUV, VAN, and Light Truck
Optimized design and minimized waste by FEM analysis. Suitable for a variety of engines, offering even smoother driving thanks to triple synchro-cone system.