Abstract: In one embodiment, a method for an engine comprises adjusting an engine operating parameter based on exhaust pressure, the exhaust pressure estimated based on wastegate actuator motor current.

Abstract: A specific electrical generator powered by an external combustion steam engine that functions through the initial combustion of various potential fuel sources to consequently generate steam from an internal working fluid that drives an electric motor or alternator to generate electricity is provided. The steam is then condensed to return to its liquid form in order to again be heated into steam through further combustion. The all-in-one electric generator combusts the fuel provided within the generator and incinerates such fuel in a manner and in an environment to effectively eliminate the potential for appreciable resultant levels of nitrogen and/or sulfur oxides. The combustion fuel may be any type of material, such as used vehicle or equipment oil, waste vegetable or cooking oil, diesel, gasoline, syngases, natural gases, and the like.

Abstract: A pump assembly for a vehicle is disclosed. The pump assembly includes a housing defining a cavity extending along a central axis to present a wall disposed radially relative to the central axis and a base transverse to the central axis. The pump assembly also includes a first gear disposed in the cavity. The first gear has a first side and a second side each extending along the central axis. The first side faces the wall and the second side opposes the first side. The first side of the first gear is complementary to the wall. The wall defines a recess adjacent to the cavity and spaced from the base. The recess is in fluid communication with the cavity for providing lubrication between the wall and the first side of the first gear.

Abstract: A pumping apparatus includes a gear pump in fluid communication with a boost pump. The gear pump includes a pump housing, a first gear, and a second gear. The first and second gear have gear teeth and trunnions on opposite sides thereof, and are disposed in the pump housing. The gear teeth of the first and second gear are meshed in a mesh region. An inlet cavity is defined adjacent to the first and second gear, on one side of the mesh region. A pump outlet is defined on an opposite side of the mesh region from the inlet cavity. A bearing is configured to support at least one trunnion of the first gear and/or the second gear. A bearing interface is defined between the bearing and the at least one trunnion. A flow path is defined between the bearing interface and the inlet cavity.

Abstract: A method for use in a gas turbine engine. The method includes the steps of: configuring a downstream injection system within the interior flowpath that includes two injection stages, a first stage and a second stage, wherein the first stage and the second stage are each axially spaced from the other; and circumferentially positioning the injectors of the first stage and the second stage based on: a) a characteristic of an anticipated combustion flow occurring just upstream of the first stage during a mode of operation; and b) the characteristic of an anticipated combustion flow just downstream of the second stage given an anticipated effect of the air and fuel injection from the first stage and the second stage.

Abstract: A cooling system provides improved heat recovery by providing a split core radiator for both engine cooling and condenser cooling for a Rankine cycle (RC). The cooling system includes a radiator having a first cooling core portion and a second cooling core portion. An engine cooling loop is fluidly connected the second cooling core portion. A condenser of an RC has a cooling loop fluidly connected to the first cooling core portion. A valve is provided between the engine cooling loop and the condenser cooling loop adjustably control the flow of coolant in the condenser cooling loop into the engine cooling loop. The cooling system includes a controller communicatively coupled to the valve and adapted to determine a load requirement for the internal combustion engine and adjust the valve in accordance with the engine load requirement.

Abstract: Designs for multiple segment lobe pumps are shown. The designs include pumps using rotors having two lobes to a plurality of lobes and segments that include two segments to a plurality of segments. Designs for both vertical or straight walled conventional lobed rotors as well as helical lobe rotors are shown. The designs are applicable to a variety of rotors and number of segments. In one particular case the designs enable a three lobe helical pump.

Abstract: An internal gear pump in which an inner rotor and an outer rotor are arranged in a rotor housing chamber. A deepest meshing section is located in the vicinity on a line connecting a center of the inner rotor and a center of the outer rotor. A center of the rotor housing chamber is offset, from a position in which the center and the center of the outer rotor coincide with each other, to the deepest meshing section side by an amount smaller than a tip clearance, which is a gap between the tooth tip of the inner rotor and the tooth tip of the outer rotor in the vicinity of a seal land between a terminal end side of an intake port and a start end side of a discharge port.

Abstract: A motor vehicle coolant pump for supplying coolant to an engine includes a two-part pump housing comprising a pump rotor housing part and a body housing part. The pump rotor housing part comprises a first mounting flange, and the body housing part comprises a second mounting flange which together fix the housing parts with respect to each other and allow a mounting of the housing parts on each other in every rotary position. A pump rotor is arranged in the pump rotor housing part. An axial coolant inlet and a tangential coolant outlet are provided on the pump rotor housing part. A rotary fixation comprises a recess at the pump rotor housing part and a nose which engages in the recess. The rotary fixation allows the pump rotor housing part and the body housing part to be mounted with respect to each other in only one single rotational angle.

Abstract: A cushion-shaped concentrator for concentrating solar radiation in an absorber includes a transparent membrane that faces the incoming radiation and includes a reflector membrane which reflects the incident radiation in the direction of the absorber. The transparent membrane and the reflector membrane form an outer casing for a chamber filled with a gas at overpressure. Tension elements are arranged between the transparent membrane and the reflector membrane The tension elements produce constrictions on the reflector membrane that separate a plurality of distinct concavely curved sections of the reflector membrane.

Abstract: A gas turbine that includes: a combustor coupled to a turbine that together define an interior flowpath, the interior flowpath extending aftward about a longitudinal axis from a primary air and fuel injection system that defines a forward end, through an interface at which the combustor connects to the turbine, and through a row of stator blades in the turbine that defines an aft end; and a downstream injection system that includes two injection stages, a first stage and a second stage, that are axially spaced along the longitudinal axis of the interior flowpath. The first stage and the second stage each includes multiple injectors configured to inject an air and fuel mixture into the interior flowpath.

Abstract: A scroll fluid machine includes: a casing; a fixed scroll having an end plate, a spiral wrap part provided on the end plate, and a flange provided outside the wrap part and fitted to the casing; and an orbiting scroll having an end plate and a spiral wrap part provided on the end plate with a plurality of compression chambers formed in a space up to the wrap part of the fixed scroll, which is provided to perform an orbiting motion, wherein the flange is provided with a deformation absorbing part which absorbs deformation due to thermal expansion of the end plate. The scroll fluid machine is improved in reliability while the compression efficiency is maintained by preventing the fixed scroll and the orbiting scroll from coming into contact with each other without increasing a clearance between the wrap parts of both scrolls.

Abstract: A gear pump includes a plurality of gear wheels rotatably retained in a pump housing and that engage in one another for the conveyance of a medium. One of the gear wheels is driven by a pump shaft, which can be coupled to a drive by means of a coupling end. To maintain a uniform conveyance flow, in particular with strongly fluctuating operational pressures, during alternating load states, within a single rotation, a brake ring is disposed on the circumference of the pump shaft, which acts with at least one brake surface on a friction surface of the pump shaft or on a friction surface of the pump housing.

Abstract: A gear wheel comprising a plurality of helical teeth, each helical tooth of the gear wheel having a tooth profile meshing with semi-encapsulation in a geared hydraulic apparatus. Each tooth having a profile which falls within a band of tolerance of +? 1/15 of the depth of a nominal tooth defined by a spline function interpolating a plurality of node points having pre-established coordinates {X,Y} with their origin on the gear wheel center.

Abstract: The internal gear pump includes: an inner rotor; an outer rotor that rotates by having predetermined eccentricity to a rotation center of the inner rotor; an outer ring that holds the outer rotor in a freely rotatable state, and is also formed with at least three cam protruded parts; a pump housing having a rotor chamber; protruded-wall surface parts that are formed on an inner periphery side surface of the rotor chamber and are also formed in the same number as that of the cam protruded parts; and operation means for oscillating the outer ring. A diameter center of the holding-inner peripheral part of the outer ring is moved by the operation means along a locus of a circle of which a radius is the eccentricity to the rotation center of the inner rotor.

Abstract: A controllable hydraulic oscillating slide machine includes an inner rotor arranged in a housing and having cylindrical recesses. A bearing is formed in the housing, in which a co-rotating outer rotor is mounted eccentrically to the inner rotor, the outer rotor having several pivotably suspended slide drivers that engage into the recesses of the inner rotor for rotationally driving the outer rotor by way of the inner rotor and form modifiable chambers. The slide drivers may each be coupled to a piston that is guided in a respective associated recess. A pressure level different from that in the chambers between the inner and the outer rotor may be set in the chambers delimited by the recesses and the associated pistons so that two different pressure levels may be generated and two different consumers can be supplied using the oscillating slide machine.

Abstract: Various technologies pertaining to causing fluid in a supercritical Brayton cycle power generation system to flow in a desired direction at cold startup of the system are described herein. A sensor is positioned at an inlet of a turbine, wherein the sensor is configured to output sensed temperatures of fluid at the inlet of the turbine. If the sensed temperature surpasses a predefined threshold, at least one operating parameter of the power generation system is altered.

Abstract: An improved positive displacement pump provides improved wear characteristics. Specifically, rotor pads are provided on faces relative to an internal portion of the rotor housing as it relates to an end wall and a rear side of a cover plate. The rotor pads preferably have at least one of anti-galling and/or anti-friction or anti-wear characteristics thereby providing improvements over the prior art. A central member is preferably provided so that pad replacement may be relatively easily performed in the field in clean in place operations.

Abstract: The present invention relates to a system for cooling a rotary engine, the system comprising a drive shaft having a bore hole and at least one of a coolant transmission hole in fluid communication with the bore hole. At least one of a coolant distribution channel is in fluid communication with the coolant transmission hole. A coolant fluid channel receives a coolant liquid from the coolant distribution channel, wherein the coolant liquid is circulated between the bore hole and the outer coolant fluid channel to cool the rotary engine. Other exemplary embodiments include a centripetal force pump formed by at least the rotation of the drive shaft, which circulates the coolant liquid between the drive shaft bore hole and the outer coolant fluid channel to cool the rotary engine, and adjusting the coolant liquid flow rate based, in part, on the RPM of the drive shaft.

Abstract: A compressor has a housing which includes a compression mechanism for compressing and then discharging sucked air, and an intercooler core for cooling the discharged air and mitigating a pressure fluctuation thereof. The housing has a cylinder block integrally formed so as to include a rotor chamber which accommodates the compression mechanism, a silencing and cooling chamber which accommodates the intercooler core, and a discharge hole which provides communication between the rotor chamber and the silencing and cooling chamber.