摘要:
A sensor for detecting changes in the dielectric constant of a liquid is described. The sensor has two electrodes immersed in the liquid with dielectric surfaces substantially parallel with each other, and a ramp disposed on a support between the electrodes. The ramp intersects the surfaces at obtuse and acute angles respectively and provides a surface disposed at an angle relative to an electric field extending between the two electrodes, thereby reducing parasitic effects of the sensed dielectric content of the liquid. Slots in the electrode adjacent the lower end of the ramp reduce the strength of the field proximate to the ramp and thereby further reduce the parasitic effects.
摘要:
A system and method for providing distributed, or remote, equipment unit service reporting over a network. A database on a host computer communicates with a remote distributor computer that generates a unit down report. Technical support personnel receives the unit down report, initiates corrective action, and provides corrective action data to the host computer. The unit down report is updated to include the corrective action data. Distributor computers and management computers are linked to the host computer. A management computer may provide backup service hardware and engineering product support as needed to the distributor or dealer. Access to data fields in the host computer may be limited. The unit down report may be stored to create a historical record and may be organized and searchable depending upon specified criteria.
摘要:
A thrust and journal bearing assembly is presented that provides for separate thrust and journal segments that are joined together and held in place by interlocking tabs and slots.
摘要:
A method and apparatus for anodizing aluminum exhaust housings including the utilization of conducting rods placed through the narrow passages. The rods allow current to flow and anodizing coating to build up inside the narrow passages. The rods are insulated from the housing and are connected to a special end plate. The end plate has an insulating spacer between the housing and connecting plate and ensures that the rods are installed and spaced properly and that the current properly flows. The assembly is then degreased and rinsed. The clean assembly is then placed into an appropriate anodizing solution and connected to a current source until the coating sufficiently builds up. The assembly is then removed from the anodizing tanks and rinsed in a series of tanks of increasing temperature.
摘要:
A charge-air modification system for use with an internal combustion engine such as a diesel engine to prevent the formation of acidic condensation within engine subsystem components such as an exhaust gas recirculation (EGR) cooler and an intake manifold. An air dryer is incorporated so that charge air within such components is maintained in as close to an unsaturated condition as possible.
摘要:
An internal combustion engine has a plurality of cylinders and includes an air system having a plurality of components. The air system includes an intake portion and an exhaust portion. At least one of the components has a protective coating that reduces a tendency of soot to adhere to the at least one component. Preferably, the protective coat also reduces a tendency of the at least one component to undergo corrosion.
摘要:
According to the present invention, an edge filter for a pressurized fuel rail system having a plurality of fuel injectors from which pressurized fuel is fed to the injectors through a fuel inlet tube is disclosed. The edge filter has contoured leading and trailing ends that may be either spherical or conical to reduce turbulence in fuel upstream and downstream of the edge filter. The edge filter has inlet and outlet slots that are sloped between about 5% and 15% with the depth of the inlet slot decreasing as it approaches the outlet end and the depth of the outlet slot increasing as it approaches the outlet end.
摘要:
A method of controlling an internal combustion engine includes determining the pressure within the cylinder with a pressure sensor which samples at specific positions of the piston indicating the properties of the thermodynamic cycle. The engine is controlled and operating condition diagnosed in real time based on that series of cylinder pressures at corresponding piston positions.
摘要:
A method for controlling an engine having a cylinder includes sensing cylinder pressure; comparing the cylinder pressure to a pressure threshold; and adjusting an engine control parameter when the cylinder pressure exceeds the pressure threshold. A system for controlling engine operation is also provided.
摘要:
Various control strategies and techniques for controlling a variable speed fan in an internal combustion engine are provided. The various control techniques improve fuel economy by operating the fan at a speed sufficient to cool the engine, while avoiding unnecessarily higher speeds that result in poor fuel economy. Further, the fan may be completely disabled at cold start up to avoid over cooling, particularly in an engine using a charge air cooling system.