Caterpillar Inc.

Agco Corporation

Jeffrey Michael Thate

Eric P Gengler

Nathan T Schenkel

Bryan Edward Nelson

Gregory J Speckhart

Joshua C Ruedin

Andrew Neaville

Stephen T Tady

Michael Todd Graziano, Jr

Bahman Gozloo

Arlyn P Wilcox

Erik Alexander Lau

John D Parker

A machine includes an engine that includes a plurality of cylinders, one or more controllers, and a monitoring and reporting module. The monitoring and reporting module receives, from the one or more controllers, and via a first data link of the machine, cylinder pressure data associated with the plurality of cylinders and stores the cylinder pressure data in a data structure. The monitoring and reporting module receives, from the one or more controllers, and via a second data link of the machine, operational information associated with the engine and determines, based on the operational information, that one or more trigger criteria are satisfied. The monitoring and reporting module generates, based on determining that the one or more trigger criteria are satisfied, a data file that includes a portion of the cylinder pressure data and transmits the data file to a device not included in the machine.

Optimized high-speed cylinder pressure data retrieval and reporting

A system for communicating over a Controller Area Network (CAN) bus may include a central controller and a plurality of smart devices communicatively coupled with the central controller over the CAN bus and over an identification verification network separate from the CAN bus. Each smart device may be configured to at least one of measure various parameters and control a function based on a command received from the central controller, and then communicate one or more signals indicative of at least one of the measured parameters and the function over the CAN bus to the central controller. Each of the smart devices may include a physical input, a physical output, and at least two nonvolatile memory locations. A first of the at least two memory locations may be configured to store an identifier input signal received at the physical input from at least one of the central controller and an upstream smart device over the identification verification network, the identifier input signal being stored by the smart device as a function instance value for the smart device. The smart device may further include a source address determination module configured to determine a source address for the smart device based on the function instance value and a factory default base address for the smart device, and store the source address in a second of the at least two memory locations.

Identifying and configuring multiple smart devices on a CAN bus

An engine braking system includes a pump associated with a source of fluid, the pump supplying pressurized fluid to fuel injectors associated with the engine. An electronic controller is associated with the engine and determines a desired engine braking level as a function of various engine operating conditions and operator inputs. The engine controller produces a pump signal as a function of the desired engine braking level.

Method and apparatus for engine braking

A system and method of calibrating a differential steering system in a vehicle is provided. An initiation signal is received. At least one operating condition of the vehicle is monitored. A variable activation signal is applied to an actuation device operable to initiate a flow of pressurized fluid to a steering motor when the at least one operating condition is within a predetermined range. The rotation of the steering motor is monitored. A data point indicative of the value of the variable activation signal applied to the actuation device is captured when the steering motor begins to rotate in response to energization of the actuation device.

System and method for calibrating a differential steering system

A method and apparatus for determining a velocity of an implement and thereby moving an implement to a desired position. A control system has input signals representative of the implement arm limit position, the implement arm actual position and the implement arm desired position and outputs a signal representative of a desired velocity. The control system determines an arm velocity as a function of the arm limit position and the arm actual position and a second velocity as a function of the arm actual position and the arm desired position. The desired velocity is a function of the arm velocity when the arm velocity has a predetermined relationship to the second velocity, and the desired velocity is a function of the second velocity when the arm velocity signal does not have the predetermined relationship to the second velocity.

Method and apparatus for controlling an implement

Apparatuses and methods for controlling the slip of a work machine having a ground-engaging traction device and a hitch operable to receive a ground-engaging implement. A control system receives an actual velocity signal indicative of an actual velocity of the work machine, an apparent velocity signal indicative of an apparent velocity of the work machine, and a desired slip signal indicative of a desired slip of the work machine. The control system determines an actual derivative of slip of the work machine as a function of the actual velocity signal and the apparent velocity signal, and transmits a control signal as a function of the desired slip signal, the actual velocity signal, the apparent velocity signal, and the actual derivative of the slip. The control signal controls the vertical position of one of the hitch and the ground-engaging implement.

Method and apparatus for controlling slip

An apparatus for controlling a lateral position of a first member on a hitch of a work machine. A processing device receives a first signal indicative of a turn radius of the work machine, and transmits a second signal as a function of the first signal. The second signal controls the lateral position of the first member. An actuator is coupled with the processing device to receive the second signal. The actuator controls the lateral position of the first member as a function of the second signal.

Apparatus and method for controlling the position of an arm on a hitch

A processing device for determining a position of a first member capable of movement in at least two axes. A first processing device receives a first member actual position along a first axis. The first processing device determines and transmits a first member limit position along a second axis as a function of the first member actual position along the first axis.

Method and apparatus for controlling a hitch

An apparatus for controlling a lateral position of a first member on a hitch of a work machine. A first processing device receives a first signal indicative of a desired turn radius of the work machine and transmits a first desired hitch position as a function of the first signal. A second processing device receives a second signal indicative of an actual hitch position and also receives the first desired hitch position. The second processing device transmits a first error as a function of the second signal and the desired hitch position. A controller receives the first error and transmits a second error as a function of the first error. A first member modulator receives the first error and transmits a first activation signal as a function of the second error. The first activation signal controls the lateral position of the first member.

A device for controlling an electro-hydraulic differential steering system of a work machine. A first processing device receives a first signal indicative of a desired steering path, a second signal indicative of a ground speed, a third signal indicative of an engine speed, and a fourth signal indicative of a gage. The first processing device transmits a fifth signal as a function of the first, second, third, and fourth signals, the fifth signal being indicative of a desired pump displacement of the steering system. A second processing device receives a sixth signal indicative of a motor speed of the steering system, and the third signal. The second processing device transmits a seventh signal as a function of the third and sixth signals, the seventh signal being indicative of an actual pump displacement of the steering system. A proportional and integral controller is coupled with the first processing device to receive the fifth signal and coupled with the second processing device to receive the seventh signal.

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Peoria, IL, United States of America

Jeffrey Michael Thate