Variable geometry turbocharger (VGT) durability by avoiding excessive force on one or more components of the VGT

A controller of a machine, comprising:

• one or more memories;
• and
• one or more processors configured to:
• identify a first expansion ratio associated with a variable geometry turbocharger (VGT) of the machine;
• determine, based on the first expansion ratio, first wear-reduction information that indicates a first force-reduction threshold position of the VGT, the first force-reduction threshold position of the VGT being a position at a threshold of a force-related wear-increase operating range, the force-related wear-increase operating range being a range that includes forces that exceed a maximum force that is allowed to be exerted on one or more components of the VGT;
• select, based on the first wear-reduction information and first performance information indicating a first desired position of the VGT, the first force-reduction threshold position of the VGT, the force-reduction threshold position of the VGT being different than the desired position of the VGT;
• and
• cause the VGT to be adjusted to the first force-reduction threshold position;
• identify a second expansion ratio associated with the VGT;
• determine, based on the second expansion ratio, second wear-reduction information that indicates a second force-reduction threshold position of the VGT;
• select, based on the second wear-reduction information and second performance information indicating a second desired position of the VGT, a second position of the VGT;
• and
• cause the VGT to be adjusted to the second position.

A method, comprising:

• identifying, by a controller of a machine, a first expansion ratio associated with a variable geometry turbocharger (VGT) of the machine;
• determining, by the controller and based on the first expansion ratio, first wear-reduction information that indicates a first force-reduction threshold position of the VGT at a threshold of a force-related wear-increase operating range within which a maximum force is exceeded;
• selecting, by the controller and based on the first wear-reduction information and first performance information indicating a first desired position of the VGT, a first position of the VGT, the first position of the VGT being selected as the first force-reduction threshold position of the VGT when the first desired position of the VGT is within the force-related wear-increase operating range;
• and
• causing, by the controller, the VGT to be adjusted to the first position.