In response to increasing global pressure to enhance efficiency and reduce emissions, heavy mobile equipments for mining, agriculture and construction are going through significant design improvements. The primary objectives are to downsize their main engine by using regenerative braking thereby reducing emissions, facilitate stop-and-go motion and maneuvering, and optimize the operating parameters of the equipment. Steelhead Composites lightweight high pressure accumulators are enabling components for these mobile equipments using hydraulic power and hydraulic hybrid technologies. Lightweight composite accumulators rated for high operating pressures help reduce the overall weight of these vehicles resulting in greater range for equal fuel consumption and provides added bonus of lowering carbon fuel emission.
Accumulators store excess energy in a hydraulic circuit and re-deliver them rapidly on demand. The energy stored in the form of compressed Nitrogen in an accumulator can be transferred back to the energy of moving hydraulic oil very quickly with minimal losses. As a result, accumulators are called upon to supply the potent power that energizes the hydraulics of these heavy duty mobile equipments. A high specific power density (power per unit mass) of these accumulators allows for more efficient harnessing of the energy captured and delivered, thereby increasing the efficiency of operation.
The composite construction of Steelhead Composite accumulators reduces weight to one-third to one-quarter of steel accumulators. The result is three to four times the power density for these accumulators and the added potential for much lower installation costs.
While traditional steel accumulators cap out at 15 gal (54 L), Steelhead Composite accumulators are available in sizes up to 30 gal (113 L) with pressure rating of 6000 psi (414 bar) to meet the needs of power and energy storage requirements of heavy duty vehicles and mobile equipments for agriculture, mining and construction. The lighter weight in a single package helps with easier and safer field maintenance of these components as well.