Abstract: In a hydraulic valve comprising a spool, one or more band-shape check valves and an enclosing bolt or snout, the check valve may be compressed to the point of excessive wear or failure and may impede spool movement. The problem outlined is solved by an inventive hydraulic valve for use with a cam phasing apparatus of an internal combustion engine. The hydraulic valve comprises a hollow bolt or snout, check valves, and a spool disposed inside the bolt while still being able to shift axially within the bolt. The bolt and spool are configured to provide fluid passageways between the spool and the cam phasing apparatus depending on a translational displacement of the spool. Furthermore, the spool is configured to allow an oil flow through the fluid passageway, yet limit a compression of the band-type check valves.

Abstract: In a hydraulic valve comprising a spool, one or more band-shape check valves and an enclosing bolt or snout, the check valve may be compressed to the point of excessive wear or failure and may impede spool movement. The problem outlined is solved by an inventive hydraulic valve for use with a cam phasing apparatus of an internal combustion engine. The hydraulic valve comprises a hollow bolt or snout, check valves, and a spool disposed inside the bolt while still being able to shift axially within the bolt. The bolt and spool are configured to provide fluid passageways between the spool and the cam phasing apparatus depending on a translational displacement of the spool. Furthermore, the spool is configured to allow an oil flow through the fluid passageway, yet limit a compression of the band-type check valves.

Abstract: The electronic mileage logger has a GPS module, a processor module, a display module, a memory module, and an output module interoperably connected to allow recording, display and printing out of elapsed mileage. The memory module allows dedicated recording of trip mileage. Elapsed mileage is then stored in the memory module. The display module can display present trip mileage or mileage accumulated over a given period. The memory module retains recorded mileage until reset and cleared. The output module may be password protected and can format the mileage log for output to an external device or application, such as a printer, spreadsheet, or the like. Calibration of the mileage logger is provided during an initialization phase of the device.