A multi-stage impeller structure for a turbocharger
A technology of turbocharger and secondary impeller, which is applied to components of pumping devices for elastic fluids, machines/engines, liquid fuel engines, etc., can solve the problem of inability to balance power performance
Active Publication Date: 2021-09-21
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
[0007] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a multi-stage impeller structure for a turbocharger to solve the problem in the prior art that the power performance of a turbocharged engine cannot be balanced under low-speed and high-speed operating conditions question
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[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0042] This embodiment provides a vehicle on which an engine is installed, and the engine includes a turbocharger.
[0043] figure 1 It is a structural schematic diagram of a turbocharger of this embodiment, figure 2 for figure 1 Schematic diagram of the split, combined with figure 1 as well as figure 2 , The turbocharger of this embodiment includes a booster casing 5 , a primary impeller assembly 2 , a secondary impeller assembly 3 and an intake casing...
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The invention relates to a multi-stage impeller structure for a turbocharger. The main impeller assembly of the impeller structure includes a main stage impeller shaft and a main stage blade, and a plurality of primary stage blades are fixedly arranged on the peripheral surface of one end of the main stage impeller shaft at equal intervals, and the secondary impeller assembly includes a secondary impeller shaft, a connecting Ring and secondary blades, multiple secondary blades are arranged at equal angular intervals around the secondary impeller shaft, multiple secondary blades are fixedly connected to the connecting ring, the connecting ring is coaxially fixed on the secondary impeller shaft, and the secondary impeller shaft is movable Sleeved on the primary impeller shaft, the secondary impeller shaft can optionally be coaxially connected with the primary impeller shaft. The present invention can selectively connect the main impeller shaft of the main impeller assembly and the secondary impeller shaft of the secondary impeller assembly according to the requirement of the supercharging pressure, thereby changing the air intake volume to meet different air intake volume requirements, thereby enabling Taking into account the power performance under low-speed working conditions and high-speed working conditions, so as to avoid affecting the economic and emission performance of the engine.
Description
technical field [0001] The invention belongs to the technical field of engine power, and in particular relates to a multi-stage impeller structure for a turbocharger. Background technique [0002] With the rapid development of the automobile industry, the country and the market have increasingly strict requirements on fuel consumption and exhaust emissions. Since the exhaust gas turbocharger can increase the intake pressure of the engine, improve the air-fuel ratio, and make the engine burn more completely, it can improve fuel consumption while saving fuel. Engine power, reduce exhaust emissions, achieve the purpose of energy saving and emission reduction, so it is more and more widely used. [0003] In the prior art, since there is no mechanical power transmission between the turbocharger and the gasoline engine, but they are connected together in an aerodynamic way, the turbocharger is the key mechanism of the turbocharged engine, and its design is rational and innovative ...
Claims
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IPC IPC(8): F04D29/28F04D29/30F04D29/053F04D29/054F04D17/10F04D29/42F02B37/12
CPCF02B37/12F04D17/105F04D29/053F04D29/054F04D29/285F04D29/30F04D29/4206F04D29/4213F05D2220/40Y02T10/12
Inventor 王岭李迎浩李峥辛力何燕娥
Owner DONGFENG MOTOR CORP HUBEI