Torque limiting engine lubrication protection system
AssigneeGM Global Technology Operations LLC
InventorsJeffrey M. Kaiser, Christopher E. Whitney, Timothy W. Athan, Dennis A. Light, Timothy L. Gibbs
Life of this patent
Estimating the term…
Abstract
A lubrication torque limit module includes a temperature module that determines a temperature of an engine and generates an engine temperature signal. A limit module generates a torque limit signal based on the temperature signal and a speed of the engine. The torque limit signal identifies an indicated torque maximum limit. A torque arbitration module limits indicated torque of the engine based on the indicated torque maximum limit. The indicated torque of the engine is equal to an unmanaged brake torque of the engine plus an overall friction torque of the engine.
Claims20
A lubrication torque limit module comprising:
- a temperature module that determines a temperature of an engine and generates an engine temperature signal;
- a first limit module that generates a first torque limit signal based on the engine temperature signal and a speed of the engine, wherein the first torque limit signal identifies an indicated torque maximum limit;
- and
- a torque arbitration module that limits indicated torque of the engine based on the indicated torque maximum limit,
- wherein the indicated torque of the engine is equal to an unmanaged brake torque of the engine plus an overall friction torque of the engine.
A method comprising:
- determining a temperature of an engine and generating an engine temperature signal;
- generating a first torque limit signal based on the temperature signal and a speed of the engine, wherein the first torque limit signal identifies an indicated torque level;
- and
- limiting indicated torque of the engine based on the indicated torque level,
- wherein the indicated torque of the engine is equal to an unmanaged brake torque of the engine plus an overall friction torque of the engine.
Dependencies are inferred from the claim text.