Control of a hybrid powertrain system
AssigneeCaterpillar Paving Products Inc.
InventorsRyan J. NELSON, Toby A. FRELICH
Life of this patent
Estimating the term…
Abstract
In some implementations, a controller of a hybrid powertrain system may detect a level of demand associated with the load of the hybrid powertrain system. The controller may cause power to be proportionally provided to drive the load via the engine and the electric machine in accordance with a ratio between a first power output provided via the engine and a second power output provided via the electric machine, the ratio being associated with the level of the demand, a control mode associated with the hybrid powertrain system, and an operating mode associated with the hybrid powertrain system.
Claims20
A controller for a hybrid powertrain system including an engine and an electric machine configured to provide power to a load, the controller comprising:
- one or more memories;
- and
- one or more processors configured to:
- detect a level of demand associated with the load of the hybrid powertrain system;
- and
- cause power to be proportionally provided to drive the load via the engine and the electric machine in accordance with a ratio between a first power output provided via the engine and a second power output provided via the electric machine, the ratio being associated with the level of the demand, a control mode associated with the hybrid powertrain system, and an operating mode associated with the hybrid powertrain system.
A method, comprising:
- causing, by a controller of a hybrid powertrain system, a load of the hybrid powertrain system to be powered via an engine of the hybrid powertrain system based on a first value of a power level associated with the load not being equal to or exceeding a power threshold;
- causing, by the controller and based on the first value of the power level associated with the load not being equal to or exceeding the power threshold, power to be provided to charge one or more batteries, of the hybrid powertrain system, via an electric machine that is driven via the engine;
- detecting, by the controller, that a second value of the power level associated with the load at least meets the power threshold;
- and
- causing, by the controller, the load of the hybrid powertrain system to be powered via the engine and the electric machine based on the second value of the power level associated with the load at least meeting the power threshold,
- wherein the electric machine obtains power via the one or more batteries.
A hybrid powertrain system, comprising:
- an engine mechanically coupled to a load;
- an electric machine that is configured to operate as both an electric motor and a generator, the electric machine being mechanically coupled to the engine and the load;
- one or more batteries configured to provided power to, or receive power from, the electric machine;
- and
- a controller configured to:
- cause power to be provided from the electric machine to the one or more batteries to charge the one or more batteries based on the engine operating in an idling mode;
- and
- cause, based on a level of demand of the load and based on the engine operating in an operational mode, power to be provided to the load via a first power output of the engine and a second power output of the electric machine in accordance with a ratio between the first power output and the second power output, the ratio being based on the level of demand of the load.
Dependencies are inferred from the claim text.