TRW Automotive Holdings Corp. has introduced the ActivMode energy efficient hydraulic power steering pump which can deliver up to a 50% reduction in energy consumption compared with traditional pumps in specific configurations.
- Achieves fuel savings and temperature reduction by utilizing unique dual mode flow logic
- Flow logic is aligned to match steering system flow demand in the two primary operating states of a commercial vehicle, engine idle and cruising speed
- At low engine speed, both sides of the circuit are utilized to provide full flow to meet the demand of the steering system
- At cruising speed, one side of the circuit is hydraulically disengaged to minimize pump action and reduce power consumption
- Requires no electronics or sensors to achieve its unique flow logic, helping to minimize complexity as well as reduce size and weight
- Operation at lower temperatures provides opportunity to eliminate steering system coolers in many applications, further reducing system complexity and vehicle weight
- Able to save the equivalent of 200 liters of fuel per 100,000 km driven
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