Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.

Abstract: A method and system for controlling the steady-state speed of a cylinder in an electrohydraulic system having multiple cylinders includes a plurality of levers for controlling each of the cylinders. A controller, in communication with the levers and the hydraulic cylinders, has a limited number of parameters defining at least one desired relationship between steady-state speed and lever position for each of the cylinders stored therein. The controller further determines a current desired relationship for each of the cylinders from the associated at least one desired relationships. Upon detecting movement of the lever, the controller determines a current position of the lever associated with one of the cylinders and then controls the steady-state speed of the associated cylinder based on the limited number of parameters defining the current desired relationship and the position of the lever.

Abstract: A method and system for controlling the steady-state speed of a cylinder in an electrohydraulic system having multiple cylinders includes a plurality of levers for controlling each of the cylinders. A controller, in communication with the levers and the hydraulic cylinders, has a limited number of parameters defining at least one desired relationship between steady-state speed and lever position for each of the cylinders stored therein. The controller further determines a current desired relationship for each of the cylinders from the associated at least one desired relationships. Upon detecting movement of the lever, the controller determines a current position of the lever associated with one of the cylinders and then controls the steady-state speed of the associated cylinder based on the limited number of parameters defining the current desired relationship and the position of the lever.

Abstract: The present invention provides an apparatus and a method for determining the position of a first element relative to a second element. The apparatus includes a magnet being attached to the first element. First and second sensing devices are adapted to detect a magnetic flux density produced by the magnet and responsively generating first and second signals. The apparatus also includes a controller for receiving the first and second signals and responsively determining the position of the first element relative to the second. The present invention enables continuous calibration during the normal operation of the machine.

Abstract: A clutch includes a stationary housing member, a rotating member supported for rotation with respect to the stationary housing member, and a planetary gear assembly operably interconnecting the rotating member to an output shaft. The planetary gear assembly reduces the magnitude of speed transmitted to the output shaft. An actuating mechanism is used to switch the rotating member between a disengaged position where the rotating member rotates freely with respect to the stationary housing member and an engaged position where the rotating member is grounded to the stationary housing member. The actuating mechanism includes a magneto rheological fluid and a plurality of actuation coils. An electric current is supplied to the creating a magnetic flux. When a current is applied to the coils, the rotating member is placed in the engaged position and when there is no current in the coils, the rotating member is in the disengaged position.

Abstract: An apparatus for monitoring a rotating member. The apparatus includes a grating pattern having a plurality of wedge shaped pattern markings which are monitored by a sensor for generating a pulse signal. A processor calculates the rotating speed and the axial position of the rotating member as a function of the generated pulse signal.

Abstract: A flexible coupling formed from sheet material and having preselected stiffness characteristics is incorporated between an engine output member and an input member of a mechanism to reduce the linear vibration levels of the system in use and to accommodate a preselected amount of misalignment therebetween. The flexible coupling has radially outer and inner edge portions, and a formed intermediate portion connecting them which in cross section has a generally truncated V-shape. A preferred embodiment has an annular body with the intermediate portion thereof having conical outer and inner walls, a relatively flat end wall, and blended corners connecting the walls and edge portions. When used between a diesel engine and an electric generator set the formed flexible coupling shifted the major structural resonances away from the normal operating range and greatly reduced the linear vibration levels thereof.

Abstract: Balancing devices or systems have been used to compensate for the periodic unbalanced forces generated by the reciprocating movement of the piston and connecting rod assemblies of an engine. These devices in the past have reduced serviceability, increased engine component complexity, increased cost and have reduced reliability. The subject device provides a simple, inexpensive, more serviceable and reliable balancing system. A plurality of individual bearing supports are removably attached to the engine, a pair of balancing shafts are rotatably positioned in the supports and a thrust pin is isolatingly mounted between the support and the shaft. A pair of o-rings are mounted about each end of the pin and is positioned in the support at least partially isolating the pin from the engine. The center of the pin has a plurality of seating surfaces thereon which have an oil film between the seating surfaces and a groove in the shaft.