Browse Publications Technical Papers 2005-01-1262
2005-04-11

Energy Consumption of Electro-Hydraulic Steering Systems 2005-01-1262

The reduction of fuel consumption in vehicles remains an important target in vehicle development to meet the carbon dioxide emission reduction target. One of the significant consumers of energy in a vehicle is the hydraulic power-assisted steering system (HPS) powered by the engine belt drive. To reduce the energy consumption an electric motor can be used to drive the pump (electro-hydraulic power steering or EHPS). In this work a simulation model was developed and validated to model the energy consumption of the whole steering system. This includes an advanced friction model for the steering rack, a physically modeled steering valve, the hydraulic pump and the electric motor with the control unit. The model is used to investigate the influence of various parameters on the energy consumption for different road situations. The results identified the important parameters influencing the power consumption and showed the potential to reduce the power consumption of the system. System pressure drop under standby conditions was found to have an important effect on the power consumption. The implications of these results for the development of new systems are also discussed.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Improved Fuel Consumption through Steering Assist with Power on Demand

2008-21-0046

View Details

TECHNICAL PAPER

An Integrated Approach for Energy Management Analysis of Conventional and Innovative Vehicle: Drivetrain 3.0

2004-01-3056

View Details

TECHNICAL PAPER

A Dual-Use Hybrid Electric Command and Control Vehicle

2001-01-2775

View Details

X