Driven by the need for greater fuel efficiency DENSO has developed a range of compact, low-cost, high-power systems compatible with a range of vehicle models. DENSO offers a wide choice of new sensors and brushless motor EPS systems in addition to more traditional systems. DENSO supplies compact EPS ECUs for a wide range of vehicles. In 2006 DENSO was the first company in the industry worldwide to develop a steering torque sensor, a key component in electric power steering (EPS) systems that better interpret driver intent.

How the system works:

• The EPS electronic control unit (ECU) calculates the assisting power needed, in accordance with the driver’s steering operation and the vehicle’s speed.
  
• To reduce the driver’s steering force, the EPS motor rotates the steering gear based on the assisting power needed.

Compared with a hydraulic power steering system that continuously drives a hydraulic pump, the EPS system drives the EPS motor only when necessary, resulting in reduced fuel consumption.

Benefit and Features

• DENSO’s EPS ECU has a DC-DC converter to control the EPS motor at a higher voltage with a lower current, reducing the size of the ECU as well as the power consumption of the ECU and the motor.
• DENSO is working to create a supply structure, including overseas production sites, optimized for cost and service.
• DENSO offers a steering torque sensor that more accurately determines driver intent.