Abstract: In an internal combustion engine that can burn two fuels, the main fuel may become unavailable, either temporarily or until the main fuel is replenished. The present apparatus determines when to fuel an engine with main fuel and secondary fuel, or secondary fuel alone.

Abstract: A flexible circuit interposer includes a flexible circuit substrate which allows in-situ probing of an attached device during, for example, circuit debugging, assembly qualification, and the like. A first set of pads (and optionally a fourth set of pads) is configured in a predetermined pattern on the bottom surface of a flexible substrate. Similarly, a second set of pads is configured in substantially the same pattern on the top surface of the flexible substrate, wherein the pads in the second set of pads is electrically continuous with a pad in the first set of pads. A third set of pads is configured in substantially the same pattern on the top surface of the flexible substrate. One or more conductive traces are formed to connect one or more pads in the third set of pads with one or more pads in the first or the second set of pads.

Abstract: Methods and apparatus for testing a semiconductor device are disclosed. A flexible circuit interposer includes a flexible circuit substrate which allows in-situ probing of an attached device during, for example, circuit debugging, assembly qualification, and the like. A first set of pads is configured in a predetermined pattern on the bottom surface of a flexible substrate. Similarly, a second set of pads is configured in substantially the same pattern on the top surface of the flexible substrate, wherein each of the pads in the second set of pads is electrically continuous with a corresponding pad in the first set of pads. A third set of pads is configured in the same pad pattern on the top surface of the flexible substrate. One or more conductive traces are formed to connect one or more pads in the first set of pads with spatially-corresponding pads in the third set of pads.

Abstract: Methods and apparatus for testing a semiconductor device are disclosed. A flexible circuit interposer includes a flexible circuit substrate which allows in-situ probing of an attached device during, for example, circuit debugging, assembly qualification, and the like. A first set of pads is configured in a predetermined pattern on the bottom surface of a flexible substrate. Similarly, a second set of pads is configured in substantially the same pattern on the top surface of the flexible substrate, wherein each of the pads in the second set of pads is electrically continuous with a corresponding pad in the first set of pads. A third set of pads is configured in the same pad pattern on the top surface of the flexible substrate. One or more conductive traces are formed to connect one or more pads in the first set of pads with spatially-corresponding pads in the third set of pads.

Abstract: In the present method, cold substances are transferred through a nozzle with moving parts. An insulating boot facilitates the method. The present method is generally suited for use in transferring cryogenic substances such as during the refueling of liquid natural gas vehicles. The present method causes an insulating layer to be created between a removable boot and a nozzle separating the ambient environment from the moving parts of the nozzle, purging the layer with a dry gas such as nitrogen to remove moisture and restricting the incursion of such moisture from the layer and therefore, from the moving parts to avoid freezing up of the moving parts. The layer can also help to avoid freezing up of the abutting interface created between the nozzle and receiving line when the nozzle is removably engaged to a receiving line.

Abstract: In the present method, cold substances are transferred through a nozzle with moving parts. An insulating boot facilitates the method. The present method is generally suited for use in transferring cryogenic substances such as during the refueling of liquid natural gas vehicles. The present method causes an insulating layer to be created between a removable boot and a nozzle separating the ambient environment from the moving parts of the nozzle, purging the layer with a dry gas such as nitrogen to remove moisture and restricting the incursion of such moisture from the layer and therefore, from the moving parts to avoid freezing up of the moving parts. The layer can also help to avoid freezing up of the abutting interface created between the nozzle and receiving line when the nozzle is removably engaged to a receiving line.