Abstract: A method including activating a first clutch assembly to connect a first rotatable member to a rotating final output member until a shift trigger point is reached to provide a rotational speed to the first rotatable member from the final output member. The first clutch assembly is then deactivated. The second clutch assembly that connected a synchronized second rotatable member with the final output member is then deactivated. A third synchronizer engaged with the first rotatable member, and the first clutch assembly is activated to connect the first rotatable member to the final output member.

Abstract: A four stroke internal combustion includes at least one cylinder and at least one intake valve associated with the cylinder. The intake valve is configured to open and close over a predetermined range of crankshaft rotation in accordance with a Miller thermodynamic cycle. An electronic controller receives at least one input signal indicative of an amount of air and/or an amount of air/fuel mixture in cylinder. The electronic controller is configured to provide a timing phase signal that operates to adjust a timing of operation of the intake valve based on the input signal(s) such that a torque output of the engine is maintained substantially constant over a predetermined range of engine speed by shifting the predetermined range of crankshaft rotation.

Abstract: A disclosed engine system includes an engine having upper and lower portions, an ancillary component positioned above the upper portion of the engine and having upper and lower portions, and an air diverter adjacent to both the upper portion of the engine and the lower portion of the ancillary component.

Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.

Abstract: A system is disclosed for connecting a cab to a machine supporting frame. A sub-frame is secured to the machine supporting frame and is configured to tilt relative to the machine supporting frame. A plurality of vibration damping mechanisms is configured to at least partially inhibit transmission of shocks and vibrations between the sub-frame and the cab. A plurality of dead stop mechanisms is configured to limit movement between the sub-frame and the cab. A rigid connection between the machine supporting frame and the sub-frame is configured to be selectively disconnected. A pivot connection between the machine supporting frame and the sub-frame is configured to permit the sub-frame and the cab to be tilted relative to the machine supporting frame upon disconnection of the rigid connection.

Abstract: An electric motor such as an AC induction electric motor includes a rotor having a rotor core and a rotor shaft. The rotor shaft defines an axially extending bore which has an electrical grounding ring positioned therein. The electrical grounding ring has an inertia insensitive configuration and forms a relatively low resistance electrical circuit segment between the rotor shaft and an electric motor housing to ground the electric motor rotor. The electric motor includes an oil lubricated bearing for the rotor shaft, and a sealing member such as a lip seal is positioned within the axially extending bore to inhibit lubricating oil intrusion therein. A non-rotating stub shaft may be mounted in the housing and extends into the axially extending bore to fluidly seal with the sealing member and electrically connect with the electrical grounding ring, which is fixed to rotate with the rotor shaft.

Abstract: A data acquisition system for an excavation machine having a power source configured to drive a tool through a work cycle is disclosed. The data acquisition system may have a first sensor associated with the power source to generate a first signal indicative of a performance of the power source, and a second sensor associated with the tool to generate a second signal indicative of a performance of the tool. The data acquisition system may also have a controller in communication with the first and second sensors. The controller may be configured to record the first and second signals, and partition the work cycle into a plurality of segments. The controller may be further configured to link the performance of the power source and the performance of the tool together with one of the plurality of segments during which the associated first and second signals were recorded.

Abstract: A method for transforming machine sensor data between a time domain and a combustion pulse domain is disclosed. The method may include determining a number of pulse events per rotation of a shaft and determining a sampling rate per pulse event. The method may also include sampling one or more sensors at the sampling rate per pulse event. The method also may include transforming the samples into the combustion pulse domain.

Abstract: An engine exhaust after-treatment system is provided, which may include a particulate trap configured to remove at least some constituents of the exhaust flowing from an engine through an exhaust system. The system may also include a controller configured to collect in-service data related to an operating parameter indicative of the amount of time the engine operates. In addition, the system may include a memory device attached to the particulate trap and including a memory. The memory may be configured to store usage data indicative of how much time the particulate trap has been used in service. The memory may be configured to communicate with the controller to receive information related to the in-service data collected by the controller and update the usage data in the memory, based on the communication with the controller, to reflect a total amount of time the particulate trap has been in service.

Abstract: A method of changing from a first gear position to a second gear position of a transmission arrangement is disclosed. The arrangement includes a rotatable transmission member, a hydrostatic continuously variable transmission coupled to the transmission member and operable to rotate the transmission member at a first speed, a controller configured to control operation of the hydrostatic continuously variable transmission, and a gear apparatus coupled to the transmission member and configured to be shiftable between at least the first gear position and the second gear position. The method includes controlling the hydrostatic continuously variable transmission, using the controller, to rotate the transmission member at the first speed, and shifting the gear apparatus from the first gear position to the second gear position while the transmission member is rotating at, or converging with, the first speed.

Abstract: An electric motor/generator cooling mechanism is presented. The cooling mechanism includes a hollow cooling jacket having an inner and outer coaxial surface, where the inner surface defines a generally cylindric cavity for receiving a stator in heat transference contact with the inner surface, and the outer surface has a cast spiral groove section with jogged cooling passages. The disclosure includes an outer case having one or more inlet ports, an outlet port, and a vent for purging air, cooling fluid flowingly encased between the cooling jacket and the outer case, flowing through the jogged cooling passages, and a flanged end surface on an end of the outer case for boltingly connecting the cooling jacket to the outer case.

Abstract: A torque coefficient measuring device can be used to measure an axial load produced by a torque applied to a threaded component which is mounted to the fixture. The measuring device can include a base defining a chamber therein. A load sensor is disposed within the chamber of the base. A movable load pin is housed within the base and arranged such that an axial load placed upon the load pin is transmitted to the load sensor. An attachment member is adapted to be connected with the threaded component. The attachment member is operably arranged with the load pin such that a torque applied to a threaded component mounted to the attachment member places an axial load upon the load pin.

Abstract: A rocker switch may include a housing and an actuator pivotably mounted relative to the housing for movement between an initial position and an actuated position. The actuator may include an exterior face defining a first contact surface and a second contact surface, the first contact surface being substantially planar and disposed within a first contact plane, and the second contact surface being substantially planar and disposed within a second contact plane, wherein the second contact plane is spaced from and substantially parallel to the first contact plane.

Abstract: A cartridge for a track chain used to propel a track machine is disclosed. The cartridge includes a pin that passes axially through a bushing. The bushing may include two opposing ends and a cylindrical outer surface extending between the opposing ends of the bushing. Each end of the bushing includes an annular seal pocket for accommodating a seal and an annular step groove for coupling each end of the bushing to an inner track link. The bushing may be axially disposed between two inserts and the seals are track seals that engage one of the inserts. The inserts may be axially disposed between two collars and the collars are coupled to the pin. The collars may also include annular seal pockets that accommodate track seals.

Abstract: A track undercarriage link includes a bore for accommodating a pin. The bore may include an annular recess for accommodating part of a retaining ring. The pin may include a peripheral recess for accommodating part of the retaining ring as well. The retaining ring may include a strip that includes a first end and a second end. The strip may form at least one concentric ring with a gap disposed between the two ends. The gap may form a transition section that include a first section disposed adjacent the first end of the strip and a second section disposed adjacent the send end of the strip. A ramp may be disposed between the first and second sections. The ramp and the sections may enable a flathead screwdriver or other blunt object to be slid underneath the first or second end of the strip to facilitate removal of the retaining ring from the pin and therefore removal of the pin from the bore of the track undercarriage link.

Abstract: An exhaust system for a use with a combustion engine is provided. The exhaust system may have a first exhaust manifold, a second exhaust manifold, and an exhaust gas recirculation circuit. The exhaust system may also have a fixed geometry turbocharger with a first volute configured to receive exhaust from the first exhaust manifold, and a second volute configured to receive exhaust from the second exhaust manifold. The exhaust system may also have a recirculation control valve in fluid communication with the first exhaust manifold, the second exhaust manifold and the exhaust gas recirculation circuit. The recirculation control valve may have a valve element movable to selectively adjust a flow of exhaust in the exhaust gas recirculation circuit, the first volute, and the second volute.

Abstract: A method of controlling a valve and a control system in a machine having an internal combustion engine, the system including the valve and an associated motor, and a temperature sensor that supplies a temperature signal to a controller in electrical communication with the motor. The controller supplies a closing current to the motor at a temperature signal corresponding to a temperature no greater than a preset temperature parameter, the closing current being at or above a nominal operating current of the motor and being furnished for a preset period of time.

Abstract: The disclosure describes, in one aspect, a system for a machine having an electric drive configuration. The system includes a first motor associated with a first wheel, the first motor adapted to provide torque to drive the first wheel, a second motor associated with a second wheel, the second motor adapted to provide torque to drive the second wheel. The system further includes a controller adapted to determine a rotational speed of the first wheel, determine a rotational speed of the second wheel, determine a steering angle of the machine, compare the rotational speeds of the first and second wheels, and adjust the torque to the first wheel if the rotational speed of the first wheel is less than the rotational speed of the second wheel.

Abstract: A vibratory compactor machine includes a machine frame and a roller drum rotatably coupled to the frame and rotatable about a drum axis oriented generally traverse to the direction of travel of the machine. A vibration assembly is disposed inside the roller drum. The vibration assembly includes a first eccentric member and a second eccentric member rotatably disposed in the roller drum and rotatable about a respective first and second eccentric axes orientated perpendicularly to the drum axis. The roller drum rotates about the drum axis independently of the vibration assembly and the first and second eccentric members.