Motor Driven Power Steering—For the Maximum Steering Sensation in Every Driving Situation

Shigeru Iga; Akihiko Sakazaki; Naoki Shibata; Takeshi Ohe

doi:10.4271/880705

1988-02-01

Motor Driven Power Steering—For the Maximum Steering Sensation in Every Driving Situation 880705

This paper describes the first commercialized motor driven hydraulic power steering system which is installed in Subaru XT from May,1987 in Japan. This electronic-controlled Motor Driven Power Steering (MDPS) has been completed for improvement of the steering sensation and fuel efficiency.

The MDPS system is a speed sensing power steering which produces heavier steering effort depending on the increase of the vehicle speed, Driving situations are automatically divided by the vehicle speed and steering frequency into four modes such as high speed driving, city areas, suburban and winding roads. Power assist can be controlled for the optimum steering sensation in each mode. The motor is not activated for improvement of fuel consumption when steering signals are not input below a given vehicle speed.

Performance data of the steering effort and fuel efficiency on the MDPS system are included and also the specific working fluid, the motor specifications and other components are described in the appropriate section.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Motor Driven Power Steering—For the Maximum Steering Sensation in Every Driving Situation 880705

SAE MOBILUS