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Low-inlet-pressure and high-pressurization-capacity combined electric pump

A technology of inlet pressure and high boost pressure, which is applied to engine components, machines/engines, liquid fuel feeders, etc., and can solve the problem of complex engine fuel supply control system, complex fuel supply regulation system, pipeline layout and other structural volume occupations. Large space and other problems, to achieve the effect of reducing control complexity and cost, reducing system volume and weight space, and reducing overall volume and installation space

Active Publication Date: 2020-05-19
BEIJING POWER MACHINERY INST
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AI Technical Summary

Problems solved by technology

The engine fuel supply system is mainly realized by the combination of two independent functional components, the pre-charge electric pump and the main electric pump, and a special space is required for the motor cooling pipeline. The fuel supply adjustment system is relatively complicated, and the structural volume of the pipeline layout occupies The space is large, and the engine oil supply control system is relatively complicated

Method used

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  • Low-inlet-pressure and high-pressurization-capacity combined electric pump
  • Low-inlet-pressure and high-pressurization-capacity combined electric pump
  • Low-inlet-pressure and high-pressurization-capacity combined electric pump

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Embodiment Construction

[0027] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] The present invention designs a combined electric pump in which the centrifugal pump and the gear pump are arranged at both ends of the driving motor. The two pumps work on the same axis and at the same speed as the motor. The centrifugal pump provides cooling fuel at a certain pressure for the motor, and at the same time ensures the inlet pressure demand of the gear pump; The gear pump adopts the gear pump with end surface compensation structure. By introducing the high-pressure oil at the outlet of the pump into the rear end surface of the gear floating bearing assembly, by reasonably determining the area of ​​the contact surface and pressure bearing surface, the high pressure oil can form a counter pressure on t...

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Abstract

The invention relates to a combined electric pump meeting the conditions of low inlet pressure and high pressurization capacity, and belongs to an engine fuel supply and control system. The combined electric pump mainly consists of such parts as a centrifugal pump module (a), a drive motor (b) and a gear pump module (c); through integral structure design of a centrifugal pump, a gear pump and thedrive motor, high cavitation resistance and high pressurization capacity under the condition of low inlet pressure of a fuel pump are achieved, and the function of providing fuel with a certain pressure and flow to an engine is achieved; and meanwhile, a special cooling structure is designed to achieve a fuel cooling effect of the drive motor. The combined electric pump can be applied to an enginefuel supply and adjusting system or places needing the same type of other medium supply devices with low inlet pressure and high pressurization capacity, and achieves high-pressurization and wide-range adjustment needed by a fuel system under the harsh condition of lower inlet pressure and comprehensive functions of quick and precise oil supply.

Description

technical field [0001] The invention belongs to the technical field of engine fuel supply control systems, and relates to a combined electric pump with low inlet pressure and high boosting capacity. Background technique [0002] In recent years, domestic high-power fuel supply adjustment system engine models have begun to use electric pumps to achieve fuel pressure and supply adjustment. The engine fuel supply system is mainly realized by the combination of two independent functional components, the pre-charge electric pump and the main electric pump, and a special space is required for the motor cooling pipeline. The fuel supply adjustment system is relatively complicated, and the structural volume of the pipeline layout occupies The space is large, and the engine fuel supply control system is relatively complicated. [0003] Combine the pre-boost pump and the main pump into one for structural fusion design, that is, integrate the booster pump and the main pump into one in...

Claims

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Application Information

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IPC IPC(8): F02M37/08F02M37/18
CPCF02M37/041F02M37/08F02M37/18
Inventor 周生元黎林林马会民
Owner BEIJING POWER MACHINERY INST
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