Back to results
US 11,926,308 B2Granted
Methods and system for operating an engine
AssigneeFord Global Technologies, LLC
InventorsStephen Shen, William David Treharne, Carol Louise Okubo
Life of this patent
Estimating the term…
Abstract
Systems and methods for operating an internal combustion engine that is coupled to a power split transmission are described. In one example, the internal combustion engine is operated in a speed control mode or a torque control mode in response to a braking torque and a transmission shift command. Operating the engine in the torque control mode may allow the engine to charge a battery while a neutral transmission state is selected.
Claims18
A method for operating an engine, comprising:
- via a controller, adjusting engine torque as a function of an applied or an actual braking torque and a battery charging limit in response to a transmission shifter being engaged in a neutral position.
A system, comprising:
- an internal combustion engine;
- a power split transmission coupled to the internal combustion engine, the power split transmission including two electric machines;
- a shift selector;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to operate the internal combustion engine in a torque control mode in response to a vehicle speed being below a threshold speed, an applied brake torque being greater than a threshold torque, and the shift selector being engaged in a neutral position.
2 more elements
A method for operating an engine, comprising:
- operating the engine in a torque control mode in response to vehicle speed being less than a threshold speed, an applied brake torque being greater than a threshold torque, and a shift selector being engaged in a neutral position, where operating the engine in the torque control mode includes adjusting engine torque as a function of brake torque.
Dependencies are inferred from the claim text.