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56results about How to "Length of time" patented technology

Injection control system

A method of operating a fuel injector including a piezoelectric actuator having a stack of piezoelectric elements, and wherein in use the injector communicates with a fuel rail, the method comprises: applying a discharge current to the actuator for a discharge period so as to discharge the stack from a first differential voltage level across the stack to a second differential voltage level across the stack; maintaining the second differential voltage level for a period of time; and applying a charge current to the actuator for a charge period so as to charge the stack from the second differential voltage level to a third differential voltage level; wherein the third differential voltage level is selected in dependence on at least two engine parameters, the at least two engine parameters selected from: rail pressure; the electric pulse time; and the piezoelectric stack temperature.
Owner:DELPHI INT OPERATIONS LUXEMBOURG S A R L

Efficient sewage treatment device

The invention discloses an efficient sewage treatment device, which comprises a device body and a motor, wherein a filter plate is fixedly welded in the device body, an opening in the lower end of thefilter plate is in seamless butt joint with an opening in the upper end of a sewage draining port, the sewage draining port is fixedly formed in the lower end of the device body, water outlets are symmetrically formed in the left end and the right end of the device body, a filter cylinder is fixedly welded to the upper end in the device body, a bottom cover is arranged at the lower end of the filter cylinder and installed at the lower end of a rotating shaft through a bearing, two sets of rotating plates are symmetrically welded to the rotating shaft, and bristles are fixedly installed at theends, away from the rotating shaft, of the rotating plates. According to the sewage treatment device, impurities with large sizes in sewage are preliminarily filtered by arranging the filter cylinder, and the sewage accumulated in the filter cylinder can be driven to rotate by the rotating plates through the rotation of the rotating plates, so that the speed of the sewage passing through the filter cylinder is increased by centrifugal force during rotation so as to enhance the preliminary filtering effect of the sewage.
Owner:西安中威环境技术有限公司

Apparatus for maintaining freshness

The aspect of this invention is to provide a freshness maintaining apparatus designed to keep various items fresh for a lengthy period of time. The apparatus includes a water storage unit (10). A support unit (11) is installed in the water storage unit (10), and cooling water is contained in the water storage unit under the support unit. A filtering unit (30) is connected to the water storage unit (10) via a drain line (20) to remove impurities from water flowing to the filtering unit. A cooling unit (40) is connected to an end of a water supply branching pipe (32) of the filtering unit (30) to cool the filtered water fed from the filtering unit to a predetermined temperature. A humidifying unit (50) is connected to another end of the water supply branching pipe (32) to atomize the filtered water fed from the filtering unit (30).
Owner:YU YOUNG SIL
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