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Column type electric power steering（C-EPS）
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Introduced as the world's first EPS in 1988.
Superior safety, comfort and environmental performance based on technologies and experience accumulated since its introduction.
Features
- Power assist unit is located in the driver's cab, so this type of steering system is suitable for compact vehicles that have a small engine compartment.
- Suitable for mini vehicles, compact vehicles and medium sized vehicles with small engine compartment.
Details-
Column : Stable operation and high collision safety performance.
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Motor/ECU : Compact, lightweight, high-efficiency integrated motor/ECU.
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Rack-and-pinion gear : High strength and high rigidity.
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Torque sensor : Compact, simple design and high performance.
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Reduction gear : Low friction and quiet performance.
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Intermediate shaft : Combined sliding load and rigidity.
Introduced as the world's first EPS in 1988.
Superior safety, comfort and environmental performance based on technologies and experience accumulated since its introduction.
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Pinion type electric power steering（P-EPS）
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Rack assist realizes excellent steering feel with high rigidity and superior dynamic performance.
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
Features- Power assist unit at the pinion shaft (inside the engine compartment). Small/compact design adopted in response the engine compartment environment.
- Quieter than C-EPS.
Applications- Small/compact vehicles.
Details-
Motor/ECU : Compact, lightweight, high-efficiency integrated motor/ECU resistant to water.
Rack assist realizes excellent steering feel with high rigidity and superior dynamic performance.
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
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Dual pinion type electric power steering（DP-EPS）
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Rack assist realizes excellent steering feel with high rigidity and superior dynamic performance.
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
Features
- Flexible and free installation system structure realized by separating the assist unit from the steering wheel axle.
- Specific travel of steering wheel realized by the optimal design of enhanced assist unit.
Details-
Column : Stable operation and high collision safety performance.
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Reduction gear : Anti-backlash system with low friction and quiet performance. Flexible installation improved by worm gear with orthogonal/cross-type setup.
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Rack-and-pinion gear : Stable rack operation by dual-axle supported pinion.
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Torque sensor : Compact, simple, high-performance sensor resistant to water.
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Motor/ECU : Compact, lightweight, high-performance integrated motor/ECU resistant to water.
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Intermediate shaft : Combined sliding load and rigidity.
Rack assist realizes excellent steering feel with high rigidity and superior dynamic performance.
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
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Rack-direct-drive type electric power steering（RD-EPS）
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
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System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
Features- Direct-response of steering power assistance by rack directly assisting on the steering shaft.
- Superior energy-saving system with lower reduction gear loss and high machine efficiency.
Details-
Motor : Direct-response feel by rack and motor on the same axle
Reduction gear : Extremely quiet performance and excellent steering feel by high-precision ball screw.
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Rack parallel type electric power steering（RP-EPS）
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Rack assist realizes excellent steering feel with high rigidity and superior dynamic performance.
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
Features
- High-output, compact reduction gear, easiser to install.
Details-
Motor/ECU : Water resistant, compact, integrated motor/ECU with light weight, high performance.
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Reduction gear : World's smallest packaging with exclusive bearing design.
With more than 10 years experiece of RD-EPS mass-production, a new balls crew configuration with excellent noise/vibration(NV) performance is
developed.
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Rack-and-pinion gear : High strength, high rigidity.
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Torque sensor : Water resistant, compact, simple sensor with high performance.
Rack assist realizes excellent steering feel with high rigidity and superior dynamic performance.
System with excellent safety, comfort and environmental performance realized through the application of proven technologies.
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Electric pump type hydraulic power steering（H-EPS）
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Excellent safety, comfort and environmental performance by energy-saving hydraulic power steering system equipped with a microcomputer-controlled electric pump.
Features- Extremely flexible installation and suitability for EV driving realized by independent electric pump.
- Excellent steering feel and improved fuel efficiency realized through optimum discharge setting (MAP) and special valve tuning.
- Idle stop mode: the energy consumption in non-steering mode (straight line driving) is reduced by about 80% (10-15 mode) than normal hydraulic power steerings.
Details-
Hydraulic power steering (HPS) gear : Comfortable steering feel realized by optimal tuning of low-flow valve.
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Electric pump/ECU (power pack) : Helical gear reduces pulsation, and realizes compact/light weight design.
Excellent safety, comfort and environmental performance by energy-saving hydraulic power steering system equipped with a microcomputer-controlled electric pump.
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Electronically controlled variable-gear-ratio steering(E-VGR)
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Features
Variable steering-angle ratio system combines vehicle stability and steering performance.
Steering performance improved by increasing steering-angle ratio at low speed.
Straight line driving stability improved by decreasing steering-angle ratio at high speed.
Vehicle stability improved by activating low friction torque.
The function of this product is also used in the automotive collision avoidance assist system, steering control while vehicle is skidding, and lane keeping assist system.
Combination : E-VGR+RD-EPS
Variable steering-angle ratio system combines vehicle stability and steering performance.
Steering performance improved by increasing steering-angle ratio at low speed.
Straight line driving stability improved by decreasing steering-angle ratio at high speed.
Vehicle stability improved by activating low friction torque.
