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US 9,802,597 B2Granted
System and method of vehicle transient torque management
AssigneeCummins Intellectual Properties, Inc.
InventorsAn Wu, Vivek A. Sujan, Phani Vajapeyazula, Kenneth Follen, Howard R. Frost
Life of this patent
Estimating the term…
Abstract
A system for establishing a torque limit for a vehicle is provided. The system uses impending terrain and speed conditions to determine an optimum torque, which improves engine efficiency and reduces fuel consumption.
Claims19
A method of operating a torque management system for an internal combustion engine, comprising:
- determining, by a processor of the torque management system, one or more segments of a route of a vehicle;
- receiving, by the processor, a plurality of inputs for each segment of the route, wherein the plurality of inputs includes at least one of route parameter data, vehicle parameter data, and vehicle operating condition data;
- receiving, by the processor, a preference regarding at least one of a speed for the vehicle, a torque output limit for an engine of the vehicle, and an acceleration amount of the vehicle;
- determining, by the processor, a power output limit for the engine of the vehicle for a current segment of the route based, at least in part, on the plurality of inputs and the preference, wherein determining the power output limit for the current segment comprises:
- determining, by the processor, for each of two or more forward segments relative to the current segment of the route, a power indicative of a total power required for traveling through the each of the two or more forward segments based on the plurality of inputs;
- determining, by the processor, one or more power vectors using the determined powers for each of the two or more forward segments;
- converting, by the processor, the one or more power vectors into one or more scalar quantities;
- and
- determining, by the processor, the power output limit for the current segment using the one or more scalar quantities and the preference;
- determining, by the processor, an engine torque output limit based on the power output limit;
- and
- providing, by the processor, the determined engine torque output limit to a vehicle device to limit an engine torque output for the current route segment.
9 more elements
A torque management system, comprising:
- a vehicle, the vehicle including an internal combustion engine and a transmission;
- and
- a processor coupled to the internal combustion engine and the transmission, the processor configured to:
- determine one or more segments of a route of the vehicle;
- receive a plurality of inputs for each segment of the route, wherein the plurality of inputs includes at least one of route parameter data, vehicle parameter data, and vehicle operating condition data;
- receive a preference regarding at least one of a speed for the vehicle, a torque output limit for the engine of the vehicle, and an acceleration amount of the vehicle;
- determine a power output limit for the engine for a current segment of the route based, at least in part, on the plurality of inputs and the preference, wherein determining the power output limit for the current segment comprises:
- determining for each of two or more forward segments relative to the current segment of the route, a power indicative of a total power required for traveling through the each of the two or more forward segments based on the plurality of inputs;
- determining one or more power vectors using the determined powers for each of the two or more forward segments;
- converting the one or more power vectors into one or more scalar quantities;
- and
- determining the power output limit for the current segment using the one or more scalar quantities and the preference;
- determine an engine torque output limit based on the power output limit;
- and
- provide the determined engine torque output limit to a vehicle device to limit an engine torque output for the current route segment.
12 more elements
A computer-readable storage medium having machine instructions stored therein, the instructions being executable by a processor to cause the processor to perform operations, comprising:
- receiving an identification of a route of travel of a vehicle
- determining one or more segments of the route;
- receiving a plurality of inputs for each segment of the route, wherein the plurality of inputs includes at least one of route parameter data, vehicle parameter data, and vehicle operating condition data;
- receiving a preference regarding at least one of a speed for the vehicle, a torque output limit for an engine of the vehicle, and an acceleration amount of the vehicle;
- determining a power output limit for the engine of the vehicle for a current segment of the route based, at least in part, on the plurality of inputs and the preference, wherein determining the power output limit for the current segment comprises:
- determining for each of two or more forward segments relative to the current segment of the route, a power indicative of a total power required for traveling through the each of the two or more forward segments based on the plurality of inputs;
- determining one or more power vectors using the determined powers for each of the two or more forward segments;
- converting the one or more power vectors into one or more scalar quantities;
- and
- determining the power output limit for the current segment using the one or more scalar quantities and the preference;
- determining an engine torque output limit based on the power output limit;
- and
- providing the determined engine torque output limit to a vehicle device to limit an engine torque output for the current route segment.
10 more elements
Dependencies are inferred from the claim text.