Abstract: A variable geometry turbine having a wastegate includes a turbine housing, a power turbine, and a regulating valve. The turbine housing is provided with an inner intake gas flow channel and an outer intake gas flow channel. The turbine housing is further provided with a wastegate pipeline configured to bypass the power turbine, and a wastegate valve configured to control communication of the wastegate pipeline. One of the regulating valve and the wastegate valve has a regulating face having a varying axial height in a rotation direction of the regulating valve, and the other of the regulating valve and the wastegate valve has a linking portion which makes contact and cooperates with the regulating face. Thus, the efficiency of the turbine is improved significantly and backflow of the gas flow is reduced.

Abstract: A variable geometry turbine having a wastegate, which meets the requirements of EGR circulation, includes a turbine housing and a power turbine. The turbine housing is provided with an inner intake gas flow channel and an outer intake gas flow channel which is configured to guide exhaust gas of an engine to the power turbine for driving the power turbine to rotate. The turbine housing is further provided with a wastegate pipeline configured to discharge the exhaust gas without passing through the power turbine, and a wastegate valve configured to control communication and cutting off of the wastegate pipeline, and in the case that an intake gas amount of the exhaust gas entering into the turbine exceeds a preset value, the wastegate valve is opened to discharge a part of the exhaust gas via the wastegate pipeline.

Abstract: A turbine, including: a volute and an impeller. The volute includes: a volute gas inlet, a volute gas feeding flow passage, and a volute gas outlet. The impeller includes: blades, an impeller gas feeding flow passage, an impeller gas inlet, an impeller gas outlet, and a partition plate. The impeller gas feeding flow passage includes: an inner flow passage and an outer flow passage. The impeller is disposed inside the volute. The blades are disposed on an outer part of the impeller. The partition plate is circumferentially disposed between the impeller gas inlet and the impeller gas outlet. The partition plate divides the impeller gas feeding flow passage into the inner flow passage and the outer flow passage.

Abstract: A compressor of a turbocharger including a compressor housing and a compressor impeller. The compressor housing includes: a compressor flow passage, a compressor air inlet, and a compressor air outlet. The compressor impeller includes an impeller feeding flow passage. The compressor impeller is disposed inside the compressor housing. The compressor flow passage is disposed inside the compressor housing. The compressor flow passage is connected to the compressor air inlet and the compressor air outlet. The impeller air feeding flow passage is connected to the compressor air inlet and the compressor flow passage.

Abstract: A volute, including: an intake passage, a diffuser channel, an air inlet communicating with the intake passage, an air outlet communicating with the diffuser channel, a left pneumatic baffle, a right pneumatic baffle, and intake regulating devices. The left pneumatic baffle and the right pneumatic baffle are disposed in the intake passage to divide the intake passage into a left outer passage, an inner passage, and a right outer passage. The intake regulating devices are disposed in the left outer passage and in the right outer passage, in the proximity of the air inlet.

Abstract: A volute device, including: an intake passage including an inner passage and an outer passage; a gas inlet including a first gas inlet and a second gas inlet; and a gas outlet. The gas inlet is disposed at one end of the intake passage, and the gas outlet is disposed at the other end of the intake passage. A first inner passage and a first outer passage communicate with the first gas inlet to suck gas in a semicircle of a circumference direction at between 0° and 180°. A second inner passage and a second outer passage communicate with the second gas inlet to suck gas in another semicircle of the circumference direction at between 180° and 360°.