Abstract:
In a turbine wheel of an exhaust gas turbine comprising a turbine wheel with a hub and a plurality of turbine wheel blades which are arranged on the turbine wheel hub and which extend axially between a turbine wheel inlet and a turbine wheel outlet, the turbine wheel blades are constructed in such a way that the ratio of the hub contour thickness to the external contour thickness of each turbine wheel blade follows a defined function.
Abstract:
In an air supplier particularly for air supply systems for fuel cells including a compressor having a housing with a radial diffuser and including a rotor operated, by an electric motor, a diverting channel is connected to the radial diffuser providing a communication path guiding the air via an axial annular passage to an inwardly extending coiled collecting chamber whose outer diameter is not substantially larger than the outer diameter of the electric motor.
Abstract:
In an exhaust gas turbocharger for an internal combustion engine having air intake ducts and exhaust gas discharge ducts including a compressor and a turbine with at least two inlet flow passages, a flow adjusting device (15) arranged in the exhaust gas discharge ducts upstream of the turbine and including a rotary slide valve for controlling the exhaust gas flow first and second flow channels extending through the rotary slide, a third flow channel extends axially partially through the rotary slide valve via inlet openings at the circumference of the rotary slide which can be brought into overlapping relationship with rotary slide housing openings for controlling the exhaust gas flow from the engine to the turbine.
Abstract:
In an exhaust gas turbocharger for an internal combustion engine having air intake ducts and exhaust gas discharge ducts including a compressor and a turbine with at least two inlet flow passages, a flow adjusting device (15) arranged in the exhaust gas discharge ducts upstream of the turbine and forming a flow adjusting device having a rotary slide disposed in a rotary slide housing whereby a flow connection can be established or blocked between the flow adjusting device and a turbine inlet flow passage by means of the rotary slide (19), the rotary slide valve has first and second flow channels transversely extending through the rotary slide, a third flow channel which extends axially partially through the rotary slide and having at least two inlet openings at the circumference of the rotary slide which can be brought into overlapping relationship with rotary slide housing openings of an axial end of the rotary slide for controlling the exhaust gas flow from the engine to the turbine or, via a by-pass duct, past the turbine
Abstract:
In a supercharged internal combustion engine having an intake duct and an exhaust gas recirculation system and comprising an exhaust gas turbine with two separate flow passages of different flow cross-sections arranged upstream of a turbine rotor of the exhaust gas turbine, each flow passage being in communication with a respective engine exhaust line for supplying it with exhaust gas and an exhaust gas recirculation line extending from one of the engine exhaust lines to the engine intake duct, a bypass line bypassing the exhaust gas turbine is provided and a common control element is arranged in the recirculation line of the exhaust gas recirculation system and in the bypass line for controlling the exhaust gas flow from the recirculation line selectively to none or any of the intake duct and the turbine bypass line.
Abstract:
In an exhaust gas turbocharger for a reciprocating internal combustion engine comprising an exhaust gas turbine in the exhaust line and a compressor in the inlet line of the engine, the exhaust gas turbine has two exhaust gas flow passages, by way of which exhaust gas is fed to the turbine rotor, the ratio of the turbine rotor diameter to the compressor wheel diameter being set by a function, which is dependent on the displacement volume of the internal combustion engine.
Abstract:
In a compressor in the induction tract of an internal combustion engine with a compressor by which combustion air can be compressed to an increased boost pressure and which includes a compressor wheel rotatably mounted in a compressor housing with a main inlet duct in the flow path to the compressor wheel, and an auxiliary inlet duct joining the main inlet duct in the area of the compressor wheel, an adjustable swirl device is provided in the auxiliary intake duct, which comprises two separate, interacting swirl structures with a plurality of guide vanes distributed over the periphery and arranged so that the flow cross-section between the guide vanes of the two swirl structures can be changed by an adjusting motion of at least one swirl structure, the vane height of the guide vanes of the smaller swirl structure being 5% to 35% of the vane height of the guide vanes of the larger swirl structure.
Abstract:
In an internal combustion engine having a compressor in its induction system which has a compressor wheel rotatably mounted in an intake duct combustion air compressor, whereby the combustion air is compressed to an increased boost pressure, and an auxiliary duct which opens into the compressor intake duct, an adjustable blocking element being arranged in the compressor intake duct upstream of the compressor wheel and an adjustable swirl device being arranged in an opening region of the auxiliary duct, and an NOx storage catalytic converter being disposed in the exhaust gas system, the blocking device and the swirl device are adjustable so as to generate an air fuel ratio with an excess of fuel, and, at the same time a propulsive swirl is applied to the compressor wheel when the blocking element is moved to a position in which air supply to the compressor intake duct is restricted.
Abstract:
In an internal combustion engine having an exhaust system with a turbocharger including an exhaust gas turbine disposed in the engine exhaust duct, a bypass line connected to the exhaust duct upstream of the turbine including a valve for diverting exhaust gas flow and bypassing the turbine, the valve includes a valve body having first and second exhaust gas flow control openings of different flow cross-sections and being adjustable between a first position in which the first flow control openings is in communication with the exhaust gas duct, a second position in which the second flow control opening is in communication with the exhaust gas duct and a blocking position in which exhaust gas bypass flow through the valve is blocked.
Abstract:
A wheel (10) comprises a main body (12) and is provided with at least one reinforcing structure (14) which increases the strength of the wheel (10). The reinforcing structure (14) is at least partially integrated inside the main body (12).