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Hitachi

Hitachi Automotive Systems Ltd.

[Environment]Integrated Vehicle Control Systems (Control [Chassis])

Chassis products determine the basic functions of automobiles - moving, turning and stopping.By coordinating and harmonizing the chassis with various control technologies, we can count on improved safety and comfort.In order to aim for an even higher level of safety, the core elements of brakes, steering, and suspension have been electricted and subjected to electronic control. We created a system that completely integrates all aspects of vehicle motion. The aim of this system is to improve motion performance by responding in real-time to changes in the state of tires, road surface and the vehicle itself, as well as to achieve autonomous driving, which requires coordinated driving control.

Key Technologies

Semi-active Suspension Systems

We are advancing the development of semi-active suspensions that provide a high level of comfort and driving stability. In addition to making dampers and shock absorbers smaller and more responsive, we can meet expanding and diversifying needs by offering control systems that include ECUs and controls, comprised of a mix of hardware and software.

  • ECU:Electronic Control Unit

Electric Power Steering Systems

With integrated electronics, our power steering system features a small brushless electric motor that enables effortless handling of the steering wheel compared to hydraulic systems. Thus, our system can be utilized for autonomous driving functions such as parking assist through automated steering. The steering system features multiple sensors and drive circuits, resulting in a redundant design that prevents total loss of steering in the event of breakdown.

Key Components

Image:Key Components

List of Products

Steering Systems

  • Electric Power Steering System(Belt Drive RackAssist Type)
  • Electric Power Steering System
    (Belt Drive Rack Assist Type)
  • Electric Power Steering Systems(Pinion Assist Type)
  • Electric Power Steering System (Pinion Assist Type)
  • Manual Steering Gear for Column Assist EPS
  • Manual Steering Gear for Column Assist EPS
  • Rack & Pinion Power Steering Gear (Speed Sensitive Type)
  • Rack & Pinion Power Steering Gear (Speed Sensitive Type)
  • Electric Power Steering ControlUnit(Column Assist Type)
  • Electric Power Steering
    ControlUnit
    (Column Assist Type)
  • Integral Power Steering Gear
  • Integral
    Power Steering Gear
  • Power Steering Pump (Variable Displacement Type)
  • Power Steering
    Pump (Variable Displacement Type)
  • Variable Displacement Power Steering Pump for Heavy-duty Truck
  • Variable Displacement Power Steering Pump for Heavy-duty Truck
  • Power Steering Pump (F-Type)
  • Power Steering Pump (F-Type)
  • Power Steering Pump (CP1-Type)
  • Power Steering Pump (CP1-Type)

Drive Power Transmission Systems (Propeller Shaft)

  • Impact Absorbable CVJ Type
  • Impact Absorbable CVJ Type
  • Direct Connection Interface (DCI) Joint Type
  • Direct Connection Interface (DCI) Joint Type
  • Rubber Coupling Type (with Lobro Joint)
  • Rubber Coupling Type (with Lobro Joint)
  • CFPR Tube Type
  • CFPR Tube Type
  • Aluminum Tube Type
  • Aluminum Tube Type
  • CFRP: Carbon Fiber Reinforced Plastics
  • EPS: Electric Power Steering

Suspension Systems

  • Shock Absorber
  • Shock Absorber
  • Suspension Strut
  • Suspension
    Strut
  • Suspension Unit
  • Suspension
    Unit
  • Mono Tube ShockAbsorber
  • Mono Tube Shock Absorber
  • Frequency Reactive Damper
  • Frequency Reactive Damper
  • Hydraulic Type Height AdjustmentSuspension System
  • Hydraulic Type Height AdjustmentSuspension System
  • Air Suspension Strut
  • Air Suspension Strut
  • Semi-Active Suspension Systems
  • Semi-Active
    Suspension Systems
  • Hydraulic Cylinderfor Controlling Vehicle Roll
  • Hydraulic Cylinderfor Controlling Vehicle Roll
  • Hydraulic Cylinder for Roll Control
  • Hydraulic Cylinder for Roll Control
  • Self Levelizer
  • Self Levelizer
  • Air Levelizer
  • Air Levelizer
  • Air Compressor for Height Adjustment
  • Air Compressor for Height Adjustment

Brake Systems

  • Disc Brake Caliper
  • Disc Brake Caliper
  • Disc Brake Caliper for Motorcycle
  • Disc Brake Caliper for Motorcycle
  • Electric Parking Brake
  • Electric Parking Brake
  • Brake Master Cylinder
  • Brake Master Cylinder
  • Vacuum Booster
  • Vacuum Booster
  • Electrically-Driven Intelligent Brake
  • Electrically-Driven Intelligent Brake
  • Anti-Lock Brake System
  • Anti-Lock Brake System
  • Electronic Stability Control (ESC)
  • Electronic Stability Control (ESC)

Control Unit for Other Purposes

  • Electric 4WD Control Unit
  • Electric 4WD Control Unit