公开(公告)号：US20190249663A1

公开(公告)日：2019-08-15

申请号：US15895046

申请日：2018-02-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert Parrish ,  Michael P. Fannin ,  Ted T. Selever

IPC: F04C15/00 ,  F04C2/10 ,  F04C13/00 ,  F04C15/06 ,  F01M1/02

CPC classification number: F04C15/0092 ,  F01M1/02 ,  F01M2001/0238 ,  F04C2/10 ,  F04C13/005 ,  F04C15/0038 ,  F04C15/0076 ,  F04C15/06 ,  F04C2210/14 ,  F04C2240/50 ,  F04C2240/809

Abstract: A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated.

公开(公告)号：US10895257B2

公开(公告)日：2021-01-19

申请号：US15895046

申请日：2018-02-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert Parrish ,  Michael P. Fannin ,  Ted T. Selever

IPC: F04C15/00 ,  F04C2/10 ,  F04C13/00 ,  F04C15/06 ,  F01M1/02

Abstract: A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated.

公开(公告)号：US20170058895A1

公开(公告)日：2017-03-02

申请号：US15179358

申请日：2016-06-10

Applicant: GM Global Technology Operations LLC

Inventor： John C. Schultz ,  Ted T. Selever

IPC: F04C15/00 ,  F04C2/14 ,  F04C13/00 ,  F04C2/344 ,  F04C2/10 ,  F04C11/00

CPC classification number: F04C15/0073 ,  F04C2/102 ,  F04C2/14 ,  F04C2/344 ,  F04C11/001 ,  F04C11/005 ,  F04C15/008

Abstract: A dual pump system for a motor vehicle transmission includes a first pump connected to and co-rotated with a pump shaft rotated during operation of a motor vehicle engine. A second pump is connected to a motor shaft of an electric motor. A one-way roller clutch is connected to the second pump and to the pump shaft. The one-way roller clutch is configured to allow the faster rotated one of the pump shaft or the motor shaft to drive the second pump. The pump shaft and the motor shaft can be co-axially aligned or positioned off-axis with respect to each other.

Abstract translation: 用于机动车辆变速器的双泵系统包括连接到机动车辆发动机操作时旋转的泵轴并与其共转的第一泵。 第二泵连接到电动机的电动机轴。 单向滚子离合器连接到第二泵和泵轴。 单向滚子离合器构造成允许泵轴或马达轴中较快旋转的驱动第二泵。 泵轴和电动机轴可以相对于彼此轴向对齐或定位成离轴。