摘要:
In an air compressor, particularly for an internal combustion engine, which has a compressor housing with a flow duct structure and a recirculation arrangement including a bypass structure for recirculation some of the air entering the compressor wheel, a recirculating ring is arranged in the bypass flow structure around the compressor wheel and the ring has a plurality of flow passages distributed uniformly around its circumference with inflow orifices at the radial inner end in communication with the compressor flow duct and outflow orifice at the radial outer end in communication with a by-pass flow space.
摘要:
In an exhaust gas turbocharger for an internal combustion engine, in which a compressor is disposed in the intake duct and a turbine is disposed in the exhaust duct, and wherein the turbine has a turbine wheel in a turbine housing with at least one inlet flow passage for the introduction of exhaust gas which flow passage is provided with a variable turbine geometry for the variable setting of the effective turbine inlet flow passage cross-section, the variable turbine geometry being adjustable between a shut-off position that minimizes the turbine inlet flow cross-section and an open position that maximizes the turbine inlet flow cross-section, a gas-collecting chamber is provided which is in communication with the inlet flow passage in the turbine housing, the total volume of flow passage and the gas-collecting chamber being adjustable by an actuator movably disposed in the turbine housing as a function of the operating state of the internal combustion engine.
摘要:
In an exhaust gas turbocharger for an internal combustion engine having an air intake duct and an exhaust duct and wherein the turbocharger includes a compressor arranged in the air intake duct and a turbine arranged in the exhaust duct and a shaft carrying the turbine wheel and the compressor impeller, an electric motor is provided which includes a rotor provided with an air mover disposed in the inlet area of the compressor and being controllable for rotation independently of the rotation of the turbine.
摘要:
In an exhaust gas turbocharger for an internal combustion engine having an exhaust gas turbine arranged in an exhaust gas line, and a compressor arranged in an in-take duct and connected to the turbine by way of a shaft, the compressor includes a compressor wheel forming at the same time a rotor of an electric motor.
摘要:
In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the flow velocity of a mass flow through the compressor in the boundary layer along the wall of the flow passage is determined for detecting operation of the compressor close to the pumping limit from a reversal of the direction of the mass flow vector in the boundary layer and the control arrangement is actuated so as to prevent the compressor from transgressing the pumping limit.
摘要:
In a motor vehicle drive arrangement having an electric motor with a rotor for driving an oil pump and being supported in an air space of a housing by a rotor disk of the rotor of the electric motor which is permanently connected to a pump rotor of the oil pump, a freewheeling mechanism for a mechanical drive of the pump rotor of the oil pump is provided for coupling the oil pump to a vehicle travel drive train of the vehicle drive arrangement when the travel drive train rotates faster than the electric motor.
摘要:
In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the flow velocity of a mass flow through the compressor in the boundary layer along the wall of the flow passage is determined for detecting operation of the compressor close to the pumping limit from a reversal of the direction of the mass flow vector in the boundary layer and the control arrangement is actuated so as to prevent the compressor from transgressing the pumping limit.
摘要:
In a variable exhaust gas turbocharger for an internal combustion engine including an exhaust gas turbocharger to which exhaust gas is supplied from the engine to provide a torque for driving the turbocharger, an additional device is provided which includes an electrical or mechanical drive for supplying an additional torque to the exhaust gas turbocharger in order to maintain the exhaust gas turbocharger at a certain speed at which it is capable of generating a desired inlet air pressure for the charge air supplied to the internal combustion engine.
摘要:
An exhaust gas turbine portion of a vehicle engine turbocharger is provided with at least one variable guide-blade cascade with guide blades in a nozzle opening to the turbocharger rotor for effectively changing the cross section of the exhaust flow to the rotor wherein the angle of the guide blades is selectively settable by an adjusting device. The width dimension of the gap between the ends of the guide-blade cascade and the casing wall defining the nozzle is adjustable between a substantially zero gap dimension and a maximum gap dimension.
摘要:
In an exhaust gas turbocharger for an internal combustion engine including an exhaust gas turbine in the exhaust line and a compressor in the intake tract of the internal combustion engine, and the exhaust gas turbine includes a gas inlet passage with a variable guide vane structure supported on one side of a support ring arranged in the inlet flow passage to the turbine wheel, the support ring is mounted in a floating manner such that the side thereof, which faces away form the guide vanes is exposed to the gas pressure in the inlet flow passage in order to bias the support ring toward the opposite inlet flow passage wall and spacer sleeves with expansion properties similar to those of the guide vanes are provided between the support ring and the opposite flow passage wall for delimiting the clearance between the guide vanes and the opposite flow passage wall.