Abstract: The invention relates to a sintered metal rotor of a rotary piston pump, comprising a pot-shaped base (1) and a journal element centrally projecting from the bottom of said base (1). Said journal element comprises a base section and an adjoining connecting claw section (2) for a coupling element to be joined thereto. The rotor is characterized in that the connecting claw section (2) is configured in the form of two prominent single webs (3). Said single webs (3) are located at a diametrical distance to each other in the periphery of the cylindrical base section in one area each that is limited, in terms of its periphery, to not more than 100°. and radially to not more than 25% of the diameter of the cylindrical base section. The two connecting claw single webs (3) are pressure-sintered by means of single pressure rams that are designed for the cross-sectional areas thereof and that are actuated separately from the sinter pressure rams required to produce the rotor.

Abstract: This Rotary engine with pistons, a stator and a power chamber is comprising a Stator, which contains the power chamber for combusting a mixture of fuel and air; an air intake slot, exhaust slots and the power chamber located along an inside periphery of stator; a Rotor containing three of said pistons and three cylinders that create compression of the mixture of fuel and air; and an Eccentric Shaft for attachment to said pistons, said eccentric shaft moving said pistons in a inwardly and outwardly direction; the rotor further containing three pallets, which create a movable wall at an outer circumferential periphery of the rotor, said walls slide into the power chamber cavity of the stator; the rotor block has three equally spaced slots for mounting the three pallets, the Pallets, moves into the power chamber cavity during ignition of the compressed fuel and air mixture to enable the pallets and rotor to be pushed along the power chamber cavity, creating the rotation of the rotor.

Abstract: An internal combustion engine (100) includes a turbocharger having a turbine (108) and a compressor (118) with an air inlet (120) and a charge air outlet (119). An electronic actuator (200) has an internal cavity (226). An intake manifold (104) is in fluid communication with the charge air outlet (119) of the compressor (118) through a cooled charge air passage (126). A bleed air passage (136) fluidly connects the cooled charge air passage (126), at a bleed air point (134), with the internal cavity (226) of the electronic actuator (200).

Abstract: The invention relates to an oscillating slide machine working on an eccentric circulatory motion, whereby the oscillation guide grooves (19) on the inner rotor (5) are provided with groove front edges (20) and groove rear edges (21) of differing heights, such that the diameter of the imaginary circle (17), connecting all groove front edges (20), is smaller than the diameter of the circle connecting all the groove rear edges (21).

Abstract: The present invention provides an oil pump in which eroding of the inside of the pump due to cavitation and erosion is prevented by minimizing the pressure change in a fluid when inter-tooth spaces formed by an inner rotor and an outer rotor transport the fluid from the intake port to the discharge port. The oil pump comprises: an inner rotor; an outer rotor; an intake port; a discharge port; a transfer side partition part formed between a terminal end of the intake port and a leading end of the discharge port; and a shallow groove which is formed in the transfer side partition part, and which communicates with the discharge port but does not communicate with the intake port. The shallow groove does not intersect with the cell on the transfer side partition part, and is positioned farther inward than the circular locus of the gear bottom parts of the inner rotor.

Abstract: A turbocharger turbine housing with at least two volutes utilizing multiple nozzle rings to optimize the turbocharger's proficiency per application, and a valve to control the exhaust flow to selected volutes in the turbine housing.

Abstract: An engine includes an in-cylinder injector injecting fuel into a cylinder, a port injector injecting fuel into an intake manifold, and a valve-opening-characteristic changing mechanism changing at least lift or opening duration of an intake valve. When the engine is in a predetermined operating region and the valve-opening-characteristic changing mechanism decreases the lift or the opening duration of the intake valve, the ratio of fuel injected by the in-cylinder injector is increased according to an amount of the decrease of the lift or the opening duration and accordingly a decrease in tumble ratio is compensated for by the injection flow.

Abstract: The gear pump unit (100) comprises a pump cover (1), an internal rotor (16) mounted rotatably in a recess (9) of the pump cover (1) and formed in a rotationally fixed manner on a driven plug-in shaft (11), and an external rotor (19), which is rotatably mounted in the recess (9) of the pump cover (1) eccentrically relative to the axis of rotation (A) of the internal rotor (16). The external rotor (19) is in mesh with the internal rotor (16) only in a first angle-of-rotation range (?). In a second angle-of-rotation range (?) lying opposite the first angle-of-rotation range (?), the internal rotor (16) is in contact with an inner surface (25) of a web (23), which is disposed in the recess (9). The outer surface (26) is in contact with the external rotor (19). After closing of the recess (9) by a cover plate (27) fastened to the pump cover (1), an admission pressure chamber (21) and a low-pressure chamber (22) are therefore formed in the recess (9).

Abstract: A progressing cavity stator and a method for fabricating such a stator are disclosed. Exemplary embodiments of the progressing cavity stator include a plurality of rigid longitudinal stator sections concatenated end-to-end in a stator tube. The stator sections are rotationally aligned so that each of the internal lobes extends in a substantially continuous helix from one end of the stator to the other. The stator further includes an elastomer liner deployed on an inner surface of the concatenated stator sections. Exemplary embodiments of this invention include a comparatively rigid stator having high torque output and are relatively simple and inexpensive to manufacture as compared to prior art rigid stators.

Abstract: A trochoidal oil pump which makes it possible to achieve an improved reduction in discharge pulsation and noise, and which makes it possible to realize such a reduction using an extremely simple structure. The trochoidal oil pump of the present invention comprises a rotor chamber 1 which has an intake port 2 and discharge port 3, an outer rotor 6 and an inner rotor 5. A plurality of inter-tooth spaces S, S, . . . that are formed by the tooth shapes 5a and 6a of the inner rotor 5 and outer rotor 6 comprise a maximum sealed space Smax that is positioned in the region of the partition part 4 between the intake port 2 and discharge port 3, a plurality of inter-tooth spaces S, S, . . . within the region of the intake port 2, and a plurality of inter-tooth spaces S, S, . . . within the region of the discharge port 3. The plurality of inter-tooth spaces S, S, . . .

Abstract: Disclosed herein is a capacity-changing unit of an orbiting vane compressor that is capable of performing normal operation and no-load operation in inner and outer compression chambers through simple manipulation of a rotary valve plate, thereby easily changing the capacity of the compressor according to operation modes. The capacity-changing unit comprises a rotary valve plate disposed between a cylinder and a subsidiary frame for opening or closing a communication channel connected between an inlet port of the cylinder and inner and outer outlet ports of the cylinder as an actuator is rotated in alternating directions. Consequently, the present invention has the effect of reducing power consumption and preventing reduction in service life of the parts of the orbiting vane compressor due to repetitive on/off operation of the orbiting vane compressor, and therefore, improving the performance and reliability of the orbiting vane compressor.

Abstract: A method and a device for monitoring a rotational speed of a first charger for an internal combustion engine, especially an exhaust gas turbocharger, are provided. A first exhaust value representing an exhaust gas composition of the internal combustion engine in a first exhaust section is defined, and a first speed value representing the rotational speed of the first charger is determined according to the defined first exhaust value. The first exhaust value is regulated to a predefined first reference value using a first correcting variable which is ascertained as required for regulation. The first rotational speed value is determined depending on the first correcting variable.

Abstract: Disclosed herein is a low-pressure type orbiting vane compressor that is capable of diverging low-temperature and low-pressure refrigerant gas introduced into a shell through an inlet tube to an inlet port of a cylinder and a drive unit so as to simultaneously compress the refrigerant gas and cool the drive unit. The orbiting vane compressor comprises a vertical baffle disposed in the shell while being spaced apart from the inner end of the inlet tube, and a diverging channel defined between the baffle and the inlet tube, the diverging channel having one end communicating with the inlet port of the cylinder and the other end communicating with the drive unit. Consequently, the present invention has the effect of preventing overheating of the drive unit, and therefore, improving performance and reliability of the orbiting vane compressor.

Abstract: A V-type internal combustion engine includes cylinder heads having respective compressed-air supply channels extending therein for providing fluid communication between an air compressor and charge injectors. Formation of condensation in the compressed-air supply channels is prevented. Charge injectors are provided in the respective cylinder heads, for directly injecting charges of fuel-air mixture into combustion chambers in cylinders. Compressed-air supply channels extend from an air compressor to the respective charge injectors, including a shared channel provided in a crankcase, and branched supply channels provided in each of the respective cylinder blocks. The compressed-air supply channels are internal conduits formed by attaching the cylinder blocks to the crankcase. In addition, cooling of the compressed air in the compressed-air supply channels is prevented during engine operation, so that formation of condensation within the compressed-air supply channels is prevented.

Abstract: A two-stage turbocharger system includes an exhaust manifold formed separately from the high-pressure and low-pressure turbine housings. The exhaust manifold defines a bypass passage, and a bypass valve is disposed in the bypass passage for opening and closing the passage. The exhaust manifold also defines an inter-turbine passage. The turbine housings of the high-pressure and low-pressure turbochargers are releasably connected to the exhaust manifold such that exhaust gas received into the exhaust manifold bypasses the high-pressure turbine and flows through the bypass passage to the low-pressure turbine when the bypass valve is in the open position, and the exhaust gas flows through the high-pressure turbine and then through the inter-turbine passage to the low-pressure turbine when the bypass valve is in the closed position.

Abstract: Disclosed herein is a slider adapting apparatus for orbiting vane compressors. A circular vane of an orbiting vane is disposed in an annular space defined in a cylinder. A pair of sliders is coupled with the circular vane for performing reciprocating movement along the annular space while being in tight contact with both ends of an opening formed at the circular vane to seal between compression chambers formed in the annular space. The slider adapting apparatus comprises a gap defined between the sliders, which are spaced apart from each other, and a gap maintaining part for maintaining the gap while increasing and decreasing the gap. Using the slider adapting apparatus, damage to parts and a locking phenomenon due to severe interference between the circular vane and the sliders are prevented, and therefore, a drive unit of the orbiting vane compressor is effectively prevented from suffering overload and catching fire.

Abstract: Disclosed herein is a compression unit of an orbiting vane compressor. The compression unit comprises a circular operation space formed in a cylinder, the circular operation space having opposite ends, a circular vane disposed in the operation space for performing an orbiting movement, the circular vane having opposite ends, a linear slider disposed in the operation space for performing a linear reciprocating movement while one end of the linear slider is in contact with the end of the circular vane, and a pressurizing member disposed in the operation space adjacent to the other end of the linear slider for applying pressure to the linear slider such that the linear slider is brought into tight contact with the circular vane. Consequently, interference between the inner wall of the cylinder and the circular vane is prevented, and creation of dead volume in the operation space is prevented.

Abstract: The invention relates to an internal combustion engine provided with at least one cylinder and comprising a fuel injection system, an intake air charging system for supplying air under pressure to an air intake manifold, a controller for controlling the fuel injection system, a spark ignition system and the intake air charger. The control unit is adapted to switch the engine from a first combustion mode using a higher manifold pressure to a second combustion mode using a lower manifold pressure, and further adapted to control the intake air charging system to cause a surge in the intake air, in order to evacuate the higher manifold pressure. The invention further relates to a method for controlling the internal combustion engine and a vehicle provided with such an internal combustion engine.

Abstract: After the tooth portion 102b of the stationary scroll 102 and the tooth portion 103b of the revolving scroll 103 have contacted each other on one contact face 121 in the central portion of the scroll (shown in FIG. 5A), when this contact face 121 is shifted to two sliding contact portions 122, 123, the operating chamber V is formed between the two sliding contact portions 122, 123 (shown in FIG. 5B), and the refrigerant introducing port 105a is open to the region on the contact face 121. Accordingly, the operating chamber can be instantaneously changed over while the sealing property is ensured. Due to the above structure, the sealing property for suppressing leakage from the high pressure side at the time of the expansion mode can be compatible with the smoothing property for smoothing a change-over of the scroll operating chamber successively formed.

Abstract: An exhaust gas return system for an internal-combustion machine which comprises a low-pressure supply line extending from an inlet From the compressor. a high-pressure supply line extends to the internal-combustion machine. From the internal-combustion machine a high-pressure exhaust gas line extends to a turbine. From the turbine a low-pressure exhaust gas line extends to an outlet. The low-pressure exhaust gas line and the low-pressure supply line have connected therewith a low-pressure return line for returning exhaust gas. The high-pressure exhaust gas line has connected therewith a bypass line for utilizing the heat of the exhaust gas produced in the internal-combustion machine for heating the exhaust gas to be returned of the low-pressure return line before the exhaust gas is supplied to the turbine (24), if desired. Thus the cold start phase of the internal-combustion machine can be reduced.