Caterpillar Inc.

Nmhg Oregon, LLC

Nacco Materials Handling Group, Inc.

Hong-Chin Lin

Michael Anthony Spielman, Jr

Yun-Ren Ho

James E Schimpf

Chenyao Chen

Robert Lee Chess

Paul Douglas Hagen

John Rowley

Lucas Adam Knapp

James Thomas Ferrier

Brad Beck

Venkata Rama Varma Dantuluri

Salem Haggag

Rami Nabil Nasrallah

Joel Christian

A machine control system for use with a machine having a power source and a transmission is disclosed. The machine control system may have a clutch configured to connect an output of the power source with an input of the transmission. The machine control system may also have a sensor configured to generate a signal indicative of a speed of the power source, and a controller in communication with the clutch and the sensor. The controller may be configured to vary an actuating force of the clutch based on the signal.

Machine control system implementing speed-based clutch modulation

A machine control system for use with a machine having a power source and a transmission is disclosed. The machine control system may have a clutch configured to connect an output of the power source with an input of the transmission. The machine control system may also have a sensors configured to generate signals indicative of machine operations, and a controller in communication with the clutch and the sensors. The controller may be configured to determine the current machine application based on the signals, and vary an actuating force of the clutch based on the type of machine application.

Machine control system implementing application-based clutch modulation

An overspeed system for a vehicle is disclosed. The overspeed system may have a power source, a transmission unit, and a torque converter assembly operatively coupling the power source to the transmission unit. The overspeed system may also have a travel speed sensor configured to generate a signal indicative of a vehicle speed, and a controller in communication with the torque converter assembly and the travel speed sensor. The controller may be configured to prevent a decoupling of the torque converter assembly in response to the signal.

Vehicle overspeed system implementing impeller clutch lockout

A control system for a machine is disclosed. The control system may have a power source, an operator input device configured to generate a first signal indicative of a desired mode of power source operation, and a work implement driven by the power source. The control system may also have a controller in communication with the power source and the operator input device. The controller may be configured to classify a currently performed work implement task and select an output map based on the classification of the currently performed work implement task and the first signal. The controller may further be configured to control the power source operation using the output map.

Machine with task-dependent control

A hydraulic implement system for a machine is disclosed. The hydraulic implement system may have a boom member, a boom actuator, and a boom operator control device movable to indicate a related operator desired boom member velocity. The hydraulic implement system may also have an implement pivotally connected to the boom member, an implement actuator, and an implement operator control device movable to indicated a related operator desired implement velocity. The range of the implement operator control device may be divided into a first portion and a second portion. The hydraulic implement system may also have a controller configured to selectively limit a velocity of the implement during manipulation of the implement operator control device within the first portion such that a lift velocity of the boom member of at least 65% of the desired boom member velocity is always possible.

Hydraulic implement system having boom priority

A method for controlling a power-shift transmission comprising controlling a vehicle travel speed by simultaneously slipping two or more clutch packs associated with opposing directions of vehicle travel and adjusting an engine speed, according to a programmed response associated with a change in one or more of the engine speed, a torque converter slip, a selected direction of vehicle travel, and an accelerator position.

Advanced power-shift transmission control system

Apparatus and methods are provided for controlling a double-acting hydraulic cylinder during a load-induced rod-extending operation. The apparatus includes a activation circuit and valve for providing a flow path from a pump to the cylinder head end; a flow regeneration circuit and valve fluidly connecting the cylinder rod end and the cylinder head end and configured for providing flow from the rod end to the head end during rod extension; and a controller responsive to rod-extending rate demands and rod-position sensor signals, and operatively connected to the regeneration flow valve and the activation valve. The activation valve also includes a return valve part to control flow from the rod end to the fluid reservoir during rod extension. Both the activation valve and the return valve part are controllable by the controller independently from the regeneration flow valve.

Hydraulic flow control system and method

A dual mode control system for a hydraulic circuit () having a variable displacement pump () includes at least two actuators, each controlled by a respective valve. The valves are connected in series with a pressure sensor () measuring a pressure of fluid between the first valve () and the second valve () and relaying a signal to the electronic controller (). The electronic controller () operates in a first mode, varying the displacement of the pump () based on a command signal operating at least one of the valves, and operates in a standby mode, varying the displacement of the pump () based on the signal from the sensor, when both valves are in their respective neutral positions.

Dual mode hydraulic circuit control and method

The air circulation fan associated with a radiator of some machines may include an automatic reversing purge cycle that is utilized to dislodge material from the radiator and/or intake screen of the cooling system housing. The purge cycle is locked out when a person may be in the vicinity of the air intake screen of the machine. A controller determines that a person may be in the vicinity of the air intake screen when the machine is idle stationary, such as by determining that a parking brake is engaged. By locking out the purge cycle during machine idle stationary conditions, the risk of blowing dislodged dirt and/or debris onto a person, who may be servicing the machine or accessing an operator station, can be avoided.

Growing community of inventors

Glenview, IL, United States of America

Hong-Chin Lin