Multi-stage impeller structure for 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 problems such as inability to balance power performance
Active Publication Date: 2021-02-12
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. A main impeller assembly of the impeller structure comprises a primary impeller shaft and primary blades, the multiple primary blades are fixedly arranged on the circumferential face of one end of the primary impeller shaft at equal intervals, a secondary impeller assembly comprises a secondary impeller shaft, a connecting ring and secondary blades, and the multiple secondary blades are arranged around the secondary impeller shaft at equal-angle intervals. The multiple secondary blades are fixedly connected to the connecting ring, the connecting ring is coaxially fixed to the secondary impeller shaft, the secondary impeller shaft is movably arranged on the primary impeller shaft in a sleeving mode, and the secondary impeller shaft is selectively and coaxially connected with the primary impeller shaft. According to the multi-stage impeller structure, the primary impeller shaft of the main impeller assembly andthe secondary impeller shaft of the secondary impeller assembly can be selectively connected according to the requirement of supercharging pressure, so that the air inlet amount can be changed to meet different air inlet amount requirements, the power performance under a low-speed working condition and a high-speed working condition can be considered, and the economic and emission performance ofan engine is prevented from being influenced.
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