System For Using Mechanical Power To Operate A Hybrid Electric Vehicle
AssigneeFord Global Technologies, LLC
InventorsAndrew John Silveri, Daniel Scott Colvin, Marvin Paul Kraska
Life of this patent
Estimating the term…
Abstract
An automotive transmission transitions from a drive gear to a neutral gear when an engine is shutdown. During a rolling pull-up, a crankshaft of the engine will be spun up to a desired speed and the transmission will transition from the neutral gear to an appropriate gear based on a shift schedule. A target transmission input speed is commanded to be a synchronous speed plus an offset to smoothly transition out of electric axle drive propulsion.
Claims9
A system for using mechanical power to operate a hybrid electric vehicle including a wheel and an internal combustion engine having a crankshaft, the system comprising:
- an electric machine being configured to spin the crankshaft at a target crankshaft speed to create one of a source and sink of mechanical power;
- a transmission being configured to selectively establish a mechanical path between the crankshaft and the wheel and to pass mechanical power between the crankshaft and the wheel via the mechanical path;
- another electric machine being configured to generate electrical power to operate the vehicle;
- and
- at least one controller being configured to establish the target crankshaft speed, to use the electrical power to operate the vehicle and to use the mechanical power to operate the vehicle.
Dependencies are inferred from the claim text.