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Hitachi

Hitachi Automotive Systems Ltd.

[Environment]Engine Powertrain Systems

To meet increasingly stringent environmental regulations around the world, there is a need to efficiently convert fuel into kinetic energy, and reduce emissions of gases such as CO2.We have developed engine technologies such as direct injection and valve timing control that greatly increase the efficiency of internal combustion engines. In addition, we use simulation and analysis technologies to continually refine our components, improve engine thermal efficiency, and produce clean engines with a reduced environmental burden.

Key Technologies

High-efficiency Engine Systems

We are developing technologies that reduce CO2 emissions by improving engine thermal efficiency. In addition to fuel injectors with outstanding performance, our technologies also provide optimal drive control. Our direct injection gasoline (DIG) technology is enabled by fuel pumps that provide precise fuel injection control. Furthermore, our valve timing control (VTC) technology continuously varies the intake and exhaust valve timing based on the driving situation such as the engine’s revolution rate, temperature, and load. Through this wide range of technology, we can stabilize engine combustion and reduce harmful emission gases such as nitrogen oxides (NOx).

Low-emission Powertrain Systems

Reduction in the amount of particulate matter in emission gases has been achieved through the utilization of computer simulations and analysis technologies. In an engine, a fuel-air mixture is formed inside the combustion chamber from fuel spray injected by the injector and air flowing in from the intake pipe. Our technology homogenizes the fuel-air mixture by simulation and analysis of this phenomenon, and aims to significantly reduce particulate matter by optimizing combustion through simulation analysis of the injector nozzle tip and the internal fuel flow.

Key Components

Image:Key Components

List of Products

Control Systems

  • Control Unit for DIG
  • Control Unit for DIG
  • Control Unit for MPI
  • Control Unit for MPI
  • Control Unit for CVT
  • Control Unit for CVT
  • On Mission Control Unit for CVT
  • On Mission Control Unit for CVT
  • Control Unit for Four-speed Automatic TransmissionIn
  • Control Unit for Four-speed Automatic TransmissionIn
  • In-pan Transmission Control Module
  • In-pan Transmission Control Module

Exhaust Systems

  • Multi Function Mass Air Flow Sensor
  • Multi Function Mass Air Flow Sensor
  • Airfow Sensor (Silicon Type)
  • Airfow Sensor
    (Silicon Type)
  • Differential Pressure Sensor
  • Differential Pressure Sensor
  • Hall Effect Type Revolution Sensor
  • Hall Effect Type Revolution Sensor
  • Pressure Sensor
  • Pressure Sensor
  • Electronic Throttle Body
  • Electronic Throttle Body
  • Electronic Throttle Body for Diesel
  • Electronic Throttle Body for Diesel

Fuel Systems

  • High-Pressure Fuel Pump
  • High-Pressure Fuel Pump
  • High Voltage DIG Injector
  • High Voltage DIG Injector
  • Atomization MPI Injector
  • Atomization MPI Injector

Ignition Systems

  • Plug Top CoilIgnition
  • Plug Top CoilIgnition

Engine Components and Subsystems

  • Piston for DIG
  • Piston for DIG
  • Piston for MPI
  • Piston for MPI
  • Cooling Channel Piston
  • Cooling Channel Piston
  • Valve Timing Control System(VTC)
  • Valve Timing Control System(VTC)
  • VTC Solenoid Valve
  • VTC Solenoid Valve
  • Electromotive VTC
  • Electromotive VTC
  • Variable Valve Event and Lift (VEL)
  • VariableValve Event and Lift (VEL)
  • Variable Displacement Vane Pump(Front Cover Integrated Type)
  • Variable Displacement Vane Pump(Front Cover Integrated Type)
  • Variable Displacement Vane Pump(Chain Drive Type)
  • Variable Displacement Vane Pump(Chain Drive Type)
  • Water Pump (Single Bearing Type)
  • Water Pump (Single Bearing Type)
  • Water Pump
  • Water Pump
  • Balancer(Oil Pan & Oil Pump Integrated Type)
  • Balancer(Oil Pan & Oil Pump Integrated Type)
  • Balancer(VDVP Integrated Type)
  • Balancer(VDVP Integrated Type)
  • Chain Case Module(Oil Pump & Water Pump Integrated Type)
  • Chain Case Module(Oil Pump & Water Pump Integrated Type)
  • Water Pump (with Housing Type)
  • Water Pump (with Housing Type)