公开(公告)号：US11808225B1

公开(公告)日：2023-11-07

申请号：US17929142

申请日：2022-09-01

Applicant: Caterpillar Inc.

Inventor： Yuesheng He ,  Todd Ryan Kabrich

IPC: F02D41/02 ,  F02D29/06 ,  F02D29/04 ,  B60W30/09 ,  B60W10/30 ,  F02D41/00 ,  F01P5/02 ,  F01M1/02 ,  B60W30/19

CPC classification number: F02D41/023 ,  B60W10/30 ,  B60W30/19 ,  F01M1/02 ,  F01P5/02 ,  F02D29/04 ,  F02D29/06 ,  F02D41/0027

Abstract: In some implementations, a controller may determine, in connection with a constant speed operation of an engine operable by spark ignition of a gaseous fuel, that a transient event associated with the engine is to occur, the transient event to cause a shift from a first gear to a second gear of a transmission coupled to the engine, where the shift from the first gear to the second gear is to increase a primary load associated with the engine. The controller may cause, prior to the shift from the first gear to the second gear, increasing of an auxiliary load associated with the engine. The controller may cause, during the shift from the first gear to the second gear, decreasing of the auxiliary load.

公开(公告)号：US11686186B1

公开(公告)日：2023-06-27

申请号：US17649528

申请日：2022-01-31

Applicant: Caterpillar Inc.

Inventor： Andy Publes ,  Mark Francis Grimes ,  Todd Ryan Kabrich ,  Mark C. Paul ,  Riadh Benguedda

IPC: E21B43/26 ,  E21B41/00 ,  F04B49/06 ,  F04B49/20 ,  F04B17/03

CPC classification number: E21B43/26 ,  E21B41/0085 ,  E21B43/2607 ,  F04B17/03 ,  F04B49/06 ,  F04B49/20

Abstract: In some implementations, a controller may monitor an available power supply of at least one power source for a system for hydraulic fracturing, and a current power demand of the system. The controller may determine, based on monitoring the available power supply and the current power demand, whether a relationship between the current power demand and the available power supply is indicative of an impending power failure. The controller may cause, based on determining that the relationship between the current power demand and the available power supply indicates the impending power failure, reduction of flow rates of one or more fluid pumps of the system to reduce the current power demand.