Abstract: Apparatus and associated methods relate to health-monitoring of a magnetic speed probe. An inductive coil of the magnetic speed probe is used for two purposes: i) to sense a changing magnetic field caused by rotation of a rotating member; and ii) to radiatively transmit radio-frequency signals for determining the health of the magnetic speed probe. A signal generator coupled to the inductive coil of the magnetic speed probe generates the radio-frequency signals that, when conducted by the inductive coil, causes an inductive coil to act as a radio transmitter by radiatively transmitting the radio-frequency signals. The radio-frequency signals transmitted by the inductive coil are detected by a radio receiver. The radio-frequency signals received are indicative of health of the magnetic speed probe.

Abstract: A turbocharged compressor system using an Organic Rankine Cycle system to recover waste heat from a compression process. The Organic Rankine Cycle system circulates an organic fluid through an evaporator, where the organic fluid vaporizes and is expanded in a turbine section of a turbocharger to drive a compressor section of the turbocharger. The organic fluid vapor is condensed in a condenser and is pumped to the evaporator once again for recirculation. The compressor section of the turbocharger pre-compresses a working fluid before entering an airend in a compression system. As the working fluid exits the airend, it may be delivered to the evaporator, where the waste heat from the working fluid evaporates the organic fluid flowing in the Organic Rankine Cycle system. The working fluid may also be circulated between intercoolers in multi-stage compressor systems.

Abstract: An engine device including an exhaust gas purification device above cylinder head through a support pedestal. The support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward from the flat portion and are fixed to the cylinder head. The flat portion and the leg portions are formed integrally. Portions between the legs are each formed in an arch-shape.

Abstract: A screw rotor which is hollow has improved performance against heat, pressure, rust, and the like. A screw rotor includes a screw portion of which an outer periphery has teeth and grooves having a helical shape and extending by a predetermined length in an axial direction. A radial cross section of at least a part of the screw portion includes a cross section of an outer surface portion forming the teeth and the grooves, a cross section of an axial center portion, a cross section of a support portion that connects an axial center side of the outer surface portion and an outer diameter side of the axial center portion, and a cross section of a hollow portion formed by the support portions adjacent to each other in a rotational direction and an axial center side inner surface of a tooth bottom or a tooth tip.

Abstract: A valve comprising a stationary shell and a rotatable annular core is designed for installation on the block deck of a spark-ignition piston engine, with there being one valve installed on the engine's block for every cylinder in the block. Rotation of the annular core cyclically opens and closes the ignition pathway(s) extending between the internal volume of the valve's associated cylinder and the spark plug(s) initiating combustion within the cylinder, with the pathway(s) only being open during time intervals wherein the spark plug(s) are electrically activated as part of the engine's normal operating cycle. Control of the open-closed status of the ignition pathway(s) eliminates engine pre-fire events caused by hot points on the spark plug(s). The valve also provides improved technology for directing and regulating the flow of fuel, oxidant, and exhaust gases as they are transferred into and out of the valve's associated cylinder.

Abstract: The torque transfer assembly can include a sleeve having an elongated internal opening, a shaft having an elongated body extending in the internal opening of the sleeve, a first coupler at a first end of the elongated body coupled to a gas turbine engine rotor, and a second coupler at a second end of the elongated body coupled to a generator, the second coupler opposite the first coupler relative to a length of the elongated body, the shaft being made of a metal, and a bushing extending around the elongated body of the shaft, trapped between the shaft and the sleeve, the bushing made of plastic, the bushing having a coefficient of thermal expansion greater than a coefficient of thermal expansion of the sleeve.

Abstract: Methods and system are provided to control engine torque of an engine of a vehicle. The methods comprise determining a drive torque demand on a crankshaft of an engine; determining an accessory torque demand on the crankshaft, the accessory torque demand comprising a first torque demand from a first e-machine and a second torque demand from a second e-machine; determining whether the sum of the drive torque demand and the accessory torque demand is greater than a usable torque capacity output from the engine crankshaft, and increasing a speed of the engine in response to determining that the sum of the drive torque demand and the accessory torque demand is greater than the usable torque capacity output from the engine crankshaft.

Abstract: A method includes receiving information indicative of a temperature of exhaust gas emitted from an engine operating at an engine speed, determining that the temperature of the exhaust gas is below a predefined temperature threshold, determining an engine load sized to increase the temperature of the exhaust gas above the predefined temperature threshold, increasing a load on the engine to the determined engine load while maintaining the engine at the engine speed by increasing at least one of a fuel flow rate and a fuel flow pressure of the fuel pump powered by the engine, and diverting the excess fuel from the fuel flow path upstream of the engine. Increasing at least one of the fuel flow rate and the fuel pressure of the fuel pump causes excess fuel to be provided to the engine than is necessary to maintain the engine at the engine speed.

Abstract: A cooling system of a hybrid vehicle include an engine, a drive motor, a main water pump, a cooling line, a heat-exchange line, a heater line on which a heater and an exhaust heat recovery device are provided, a coolant control valve unit selectively supplying coolant to the cooling line, the heat-exchange line and the heater line, a bypass line connecting the rear of the exhaust heat recovery device and the front of the heater, an auxiliary water pump that selectively supplies coolant from the exhaust heat recovery device to the front of the heater, a state measurement unit that measures an operation state of the vehicle and outputs a corresponding signal, and a controller configured for controlling operation of the engine, the drive motor, the main water pump, the coolant control valve unit and the auxiliary water pump according to the output signal of the state measurement unit.

Abstract: A fluid dynamic bearing device 1 includes: a shaft member 2; a bearing sleeve 8 that has the shaft member 2 inserted into the inner periphery thereof; a housing 7 that holds the bearing sleeve 8 on the inner periphery thereof and has a bottomed cylindrical shape having an opening at an end portion on one axial side; and a seal member 9 provided at the opening of the housing 7. The seal member 9 has a disk portion 9a disposed on one axial side of the bearing sleeve 8, and a protrusion (cylindrical portion 9b) protruding to the other axial side from an outer diameter end of the disk portion 9a. An outer peripheral surface 9c of the seal member 9 is fixed to an inner peripheral surface 7a1 of the housing 7.

Abstract: A screw compressor includes a housing, a first rotor rotatable about a first axis relative to the housing, and a second rotor rotatable about a second axis relative to the housing. The second rotor is enmeshed with the first rotor. A motor is embedded within the first rotor such that the motor is coaxial with the first axis.

Abstract: A method for controlling a compressor towards an unloaded state, in which the compressor includes a compressor element (2) with an inlet (5), in which in the unloaded state, a residual flow (QD) is suctioned via the inlet (5) towards and into the compressor element (2), and in which for a transition from a loaded state of the compressor to the unloaded state, the inlet (5) of the compressor element (2) is partially closed in successive discrete transitional steps.

Abstract: Electric multiple stage variable forced air induction systems are disclosed herein. A housing defines a conduit therethrough with an exit (output) opening and an entry (intake) opening. The exit opening is to couple to and provide airflow to an air intake opening of a combustion engine. The entry opening is to receive air for delivery through the conduit to the exit opening. A plurality of stages generate thrust to increase airflow through the conduit and to the air intake opening of the combustion engine. Each stage can comprise a turbine housing component, a turbine rotor to rotate about an axis and generate thrust on air as it passes through the conduit in a direction parallel to the axis, and a motor coupled to and configured to turn the turbine rotor. One or more processing devices receive inputs indicating engine parameters and control the motor of each stage.

Abstract: An improved pipe exhaust cut-out that is adapted to be controllably opened and completely closed thereby sealing the exhaust pipe cut-out. The improved pipe exhaust cut-out incorporates a remotely controlled linear actuator.

Abstract: Described herein is a process for increasing mass flow of an exhaust gas through a catalytic converter system for a vehicle. The process may comprise determining a centerline and corresponding cumulative centerline bend angle of a first catalytic converter system spanning from an inlet point at a first end of the catalytic converter systems exhaust pipe to an outlet point at a second end of the catalytic converter systems extension pipe. Once determined, the cumulative centerline bend angle may be increased by increasing an individual bend radius of at least one bend within the exhaust pipe and/or within the extension pipe.

Abstract: A method for operating an engine during a fuel cut-off mode is disclosed. The method may adjust exhaust valve opening timing and exhaust valve lift of one or more cylinders to heat air flowing through the one or more cylinders so that a temperature of an after treatment device may be maintained or increased.

Abstract: A method for controlling a speed of a turbocharger that is in operative connection with a compressor, the steps including: provision of a setpoint for the speed of the turbocharger on the basis of a model-based precontrol for a calculation of a desired boost pressure ahead of the turbocharger; determination of an actual value for the speed of the turbocharger; control of an actuator of the turbocharger in order to compensate for the difference between the desired value and the actual value for the speed of the turbocharger. A main signal and a subsidiary signal are provided during the determination of the actual value for the speed of the turbocharger, wherein the main signal and the subsidiary signal are combined in order to validate the actual value for the speed of the turbocharger.

Abstract: Disclosed herein is a scroll compressor having a shaft balancer capable of attenuating vibration while preventing deformation of the rotary shaft during operation at a high speed.

Abstract: A gear pump includes: an inner rotor having external teeth; an outer rotor having a tubular inner housing portion in which the inner rotor is rotatably housed in an eccentric state, and internal teeth meshing with the external teeth; a first core having a tubular rotor housing portion in which the inner and outer rotors are housed, and a flange portion projecting radially outward from a tube wall of the rotor housing portion; a board-shaped second core having a contact portion in contact with the flange portion in an axial direction, and closing an opening of the rotor housing portion; and a housing opposing the second core and made of a resin. A gap is formed between opposing surfaces of the second core and the housing in a state where the flange portion is in contact with the contact portion and the housing opposes the second core.

Abstract: A method for operating a drive device having a drive unit producing exhaust gas and an exhaust gas posttreatment device designed as a vehicle catalytic converter for posttreatment of the exhaust gas. A first measured value describing the residual oxygen content in the exhaust gas is measured by a first lambda sensor arranged upstream of the exhaust gas posttreatment device and a second measured value describing the residual oxygen content in the exhaust gas is measured by a second lambda sensor arranged downstream of the exhaust gas posttreatment device. The combustion air ratio of a fuel-air mixture used to operate the drive unit is set during an at least temporarily performed normal operating mode on the basis of the first measured value, the second measured value, and a threshold value for the second measured value.