摘要:
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.
摘要:
An exhaust turbocharger for an internal combustion engine has a main compressor for compressing the fresh air supplied to the engine, an additional compressor for compressing combustion gases to be recycled to the engine, and a turbine that can be driven by the exhaust gases from the engine and which serves to drive the main compressor and the additional compressor. The turbine has an adjustable geometry which facilitates optimization of engine operation regarding pollutant emissions, fuel consumption, and performance.
摘要:
In an exhaust gas re-circulation arrangement for a supercharged internal combustion engine including an exhaust gas turbocharger with an exhaust gas turbine and a compressor, first and second exhaust pipes extending from the engine separately to the exhaust gas turbine, a charge air duct extending from the compressor to the engine and an exhaust gas recirculation line extending from one of the exhaust pipes upstream of the exhaust gas turbine to the charge air duct downstream of the compressor, the exhaust gas turbine has two turbine inlet flow passages, which provide for different flow volumes and to each of which one of the exhaust pipes is connected and a control arrangement is provided for controlling the exhaust gas flow through the turbine inlet flow passages so as to control the pressure in the exhaust gas re-circulation line to be higher than in the charge air intake duct.
摘要:
In an exhaust gas turbocharger for an internal combustion engine with a turbine casing including a turbine inlet structure with two flow passages separated by a partition, a turbine control valve is arranged in the partition and is in communication with a turbine bypass flow passage, which is disposed in the partition and extends to the turbine outlet for discharging exhaust gases from at least one of the two turbine inlet flow passages to the turbine outlet under the control of the turbine bypass valve.
摘要:
In an exhaust gas turbocharger including a compressor wheel, the compressor wheel is cooled by at least one nozzle which is arranged in close axial proximity to the axis of rotation of the compressor wheel for spraying the backside of the compressor wheel near the center thereof with coolant whereby the coolant, utilizing the centrifugal forces of the rotating compressor wheel, is completely distributed over the entire wheel back surfaces.
摘要:
An exhaust gas turbocharger for an internal combustion engine, which has an exhaust gas turbine in the exhaust system and a compressor in the induction system, comprises a variable turbine geometry, associated with the turbine, for adjustably setting a radial inlet cross section for the flow to the turbine rotor. The variable turbine geometry is configured as a guide cascade ring, which has guide vanes distributed over the periphery and encompasses the turbine rotor. The minimum distance between two adjacent guide vanes obeys a specified relationship with respect to the diameter of the turbine rotor and the number of guide vanes of the guide cascade ring. In addition, a flow edge is provided on the radially inner surface of each guide vane.
摘要:
In an internal combustion engine including an exhaust turbocharger and an exhaust-gas recirculation device, with an exhaust turbine and a compressor, the exhaust turbine has a plurality of inlet flow passages to which exhaust gas can be supplied via separate exhaust lines connected to some of the cylinders of the internal combustion engine. In total, three flow passages are provided in the exhaust turbine, of which two communicate with the exhaust-gas recirculation device, and one of these flow passages includes an adjustable throttling member for regulating the mass flow of exhaust gas to be recirculated.
摘要:
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.
摘要:
In an internal combustion engine having an exhaust gas turbocharger with an exhaust gas inlet structure including two exhaust gas flow passages in communication with two exhaust ducts via a rotary cylinder valve for controlling the exhaust gas flow, the valve includes two inlet openings for directing the flow to the inlet flow passages of the turbine and a recess which when disposed over the exhaust gas flow passages permits exhaust gas to flow from one to the other of the exhaust gas ducts, the interior of the valve being in communication with a bypass line for bypassing the turbine.
摘要:
In an internal combustion engine having an exhaust gas turbocharger with an exhaust gas inlet structure including two exhaust gas flow passages in communication with two exhaust ducts via a rotary cylinder valve for controlling the exhaust gas flow, the valve includes two inlet openings for directing the flow to the inlet flow passages of the turbine and a recess which when disposed over the exhaust gas flow passages permits exhaust gas to flow from one to the other of the exhaust gas ducts, the interior of the valve being in communication with a bypass line for bypassing the turbine.