公开(公告)号：US20240401453A1

公开(公告)日：2024-12-05

申请号：US18329286

申请日：2023-06-05

Applicant: Caterpillar Inc.

Inventor： Shawn M. DAMM ,  Rodney D. HARMS ,  Todd Ryan KABRICH ,  Yuesheng HE ,  Sri Harsha UDDANDA

IPC: E21B43/26 ,  F16H45/02 ,  F16H61/14

Abstract: A hydraulic fracturing pump system may include a hydraulic fracturing pump, a gaseous fuel engine configured to drive the hydraulic fracturing pump, and a transmission system including a gear system mechanically coupled to the hydraulic fracturing pump and torque converter configured to fluidly couple the gaseous fuel engine and the gear system. The torque converter may include an impeller, a turbine fluidly coupled to the impeller and mechanically coupled to the gear system, a stator positioned between the impeller and the turbine, an impeller clutch configured to mechanically couple the impeller to the gaseous fuel engine, and a lockup clutch configured to mechanically couple the gaseous fuel engine and the gear system.

公开(公告)号：US20190316496A1

公开(公告)日：2019-10-17

申请号：US15952578

申请日：2018-04-13

Applicant: Caterpillar Inc.

Inventor： Yanchai ZHANG ,  Zhaoxu DONG ,  Arun RAJENDRAN ,  Yifeng LU ,  Xuefei HU ,  Lidi CHEN ,  Rodney D. HARMS

IPC: F01L1/24 ,  F02D41/00 ,  G07C5/08 ,  G07C5/00 ,  F02D41/24

Abstract: Some examples described herein may involve determining an advance timing window between the valve opening or closing and a designated time that the valve is scheduled to open or close; determining a closing velocity of the valve; monitoring an engine speed of the engine; determining valve lash information based on the advance timing window, the closing velocity, and the engine speed, wherein the valve lash information identifies a magnitude of the valve lash or whether the magnitude of the valve lash associated with the valve satisfies a threshold; and performing an action based on the valve lash information.