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Outer ring driven rotary gear pump

A technology of rotating gears and gear pumps, which is applied in the direction of rotary piston pumps, rotary piston machines, pumps, etc., and can solve problems such as oil leakage, O-ring failure, and increased time for oil pump priming and filling

Inactive Publication Date: 2015-11-18
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, several problems arise when using a suction line to deliver oil to the transmission oil pump
For example, suction pipes are often sealed with O-rings, which can fail, causing oil to leak
Also, since the transmission oil pump is located above the oil fill level of the transmission, cavitation can occur at high flow rates in the suction line and the priming time of the oil pump can increase

Method used

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  • Outer ring driven rotary gear pump
  • Outer ring driven rotary gear pump
  • Outer ring driven rotary gear pump

Examples

Experimental program
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Effect test

Embodiment Construction

[0057] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses in any way.

[0058] see figure 1 , generally indicated by the reference numeral 10 to the fluid delivery system. The fluid delivery system 10 includes a storage tank or reservoir 20 and a pump 22 , wherein the pump 22 is located at least partially within the interior volume of the reservoir 20 . Reservoir 20 may be any type of container for receiving a volume of fluid, such as transmission oil. In the illustrated embodiment, fluid delivery system 10 is part of a transmission (not shown), wherein reservoir 20 is a transmission oil pan or sump located at the bottom of the transmission. Pump 22 draws a volume of transmission oil from oil pan 20 and delivers the oil to the internal components of the transmission. It should be understood that the fluid delivery system 10 is exemplary only and that various configurations of fluid delivery systems may b...

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PUM

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Abstract

A gerotor pump includes an inner ring and an outer ring. The inner ring is rotateable about an axis, where the inner ring has an outer diameter contact surface. The outer ring has an inner diameter contact surface that defines a central opening. The central opening receives the inner ring, and a portion of the inner diameter contact surface engages a portion of the outer diameter contact surface of the inner ring. A motor including a rotor and a stator that surrounds the rotor is included. The rotor surrounds the outer ring and exerts a driving force on the outer ring such that the outer ring rotates about the inner ring. The inner diameter contact surface of the outer ring and the outer diameter contact surface of the inner ring create a plurality of chambers. Rotation between the inner ring and the outer ring expand and contract the chambers to expel fluid from the gerotor pump.

Description

technical field [0001] The present disclosure relates to a rotary gear pump having an inner ring, an outer ring, and a motor, and more particularly to a rotary gear pump in which the outer ring is driven by a motor rotor. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0003] The transmission oil pump is typically mounted to the transmission case above the oil fill level and is driven by a separate electric motor, such as a permanent magnet type motor. The transmission oil pump requires relatively high starting torque from the motor, especially at colder temperatures (typically below about -25°C). The motor sometimes fails to provide the required starting torque, which causes the transmission oil pump to shut down. [0004] Additionally, a typical transmission oil pump includes hydraulic passages (eg, suction lines) for delivering oil from the oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C2/10
CPCF04C2/10F04C2/102F04C2/103F04C15/008
Inventor M·E·小罗萨利克
Owner GM GLOBAL TECH OPERATIONS LLC