公开(公告)号：US20240026875A1

公开(公告)日：2024-01-25

申请号：US17813575

申请日：2022-07-19

Applicant: Caterpillar Inc.

Inventor： Lucas J. PETERSON ,  David Alexandru VOICULESCU ,  Andy PUBLES ,  Mark Francis GRIMES

IPC: F04B49/08 ,  F04B23/06 ,  F04B9/02 ,  F04B49/06

CPC classification number: F04B49/08 ,  F04B23/06 ,  F04B9/02 ,  F04B49/065 ,  F04B2201/1208 ,  F04B2205/05 ,  F04B2201/1202 ,  F04B2207/702 ,  E21B43/26

Abstract: In some implementations, a controller may obtain an indication of a first crank angle associated with a first pump, of a dual-pump single-power source system, that is mechanically connected to a power source of the dual-pump single-power source system via a first clutch. The controller may obtain an indication of a second crank angle associated with a second pump, of the dual-pump single-power source system, that is mechanically connected to the power source via a second clutch. The controller may determine that a difference between the first crank angle and the second crank angle is outside of a tolerance of a crank angle difference value. The controller may modulate a fluid pressure associated with at least one of the first clutch or the second clutch to cause the difference between the first crank angle and the second crank angle to be within the tolerance of the crank angle difference value.

公开(公告)号：US20240026876A1

公开(公告)日：2024-01-25

申请号：US17813573

申请日：2022-07-19

Applicant: Caterpillar Inc.

Inventor： Lucas J. PETERSON ,  David Alexandru VOICULESCU ,  Andy PUBLES ,  Mark Francis GRIMES

IPC: F04B49/10 ,  F04B9/02 ,  F04B23/06 ,  F04B49/06

CPC classification number: F04B49/103 ,  F04B9/02 ,  F04B23/06 ,  F04B49/065 ,  F04B2201/1201 ,  F04B2201/1241 ,  F04B2201/1208 ,  F04B2203/0207 ,  F04B2203/0209 ,  F04B2205/06 ,  E21B43/2607

Abstract: In some implementations, a controller may obtain a set of measurement values associated with the dual-pump single-power source system, wherein the set of measurement values includes at least one of one or more speed measurements associated with a clutch that is coupled to a power source and a first pump of the dual-pump single-power source system, a measurement value indicating an output speed of the power source, or a first crank angle associated with the first pump and a second crank angle associated with a second pump of the dual-pump single-power source system. The controller may detect that the clutch is experiencing slippage based on comparing at least two measurement values of the set of measurement values. The controller may perform an action to cause the clutch to disengage a mechanical connection between the first pump and the power source while the power source is running and is mechanically connected to the second pump.

公开(公告)号：US20240018858A1

公开(公告)日：2024-01-18

申请号：US17811936

申请日：2022-07-12

Applicant: Caterpillar Inc.

Inventor： Lucas J. PETERSON

IPC: E21B43/26 ,  F04B17/03 ,  F04B49/06

CPC classification number: E21B43/2607 ,  F04B17/03 ,  F04B49/065

Abstract: In some implementations a drivetrain may include a power source configured to drive a fluid pump. The drivetrain may include the fluid pump. The drivetrain may include a driveshaft configured to transfer power that is output by the power source to the fluid pump. The drivetrain may include a coupling including an elastomeric element, wherein the coupling couples the driveshaft to the power source or to the fluid pump, wherein a rotational stiffness of the elastomeric element is based on one or more resonant frequencies of the drivetrain and an operational speed range of the power source, and wherein the coupling is configured to transfer the power that is output by the power source through the elastomeric element.