Back to results
US 9,447,747 B2Granted
Methods and systems for stopping an engine
AssigneeFord Global Technologies, LLC
InventorsAlex O'Connor Gibson, David Oshinsky, Richard John Hippley, Danny Zdravkovski, Craig Cabadas
Life of this patent
Estimating the term…
Abstract
Systems and methods for improving operation of a stop/start vehicle are presented. In one example, an engine throttle position is adjusted in response to whether or not a starter engages a flywheel during engine stopping. The throttle may be adjusted to a more open position if the starter engages the flywheel or to a more closed position if the starter does not engage the flywheel.
Claims14
A method for stopping rotation of an engine, comprising:
- ceasing fuel delivery to engine cylinders combusting air and fuel;
- commanding engagement of a starter from a state not engaged with the engine to engaged with the engine;
- and
- adjusting a position of a throttle based on whether or not the starter engages the engine, where the throttle is adjusted to a first position when the starter does not engage the engine within a first engine speed range, and where the throttle is adjusted to a second position when the starter engages the engine within the first engine speed range, the second position more open than the first.
1 more element
A method for stopping rotation of an engine, comprising:
- ceasing fuel delivery to engine cylinders combusting air and fuel;
- commanding engagement of a starter that is not engaged to the engine to engage the engine;
- and
- adjusting a position of a throttle based on whether or not the starter engages the engine and engine speed, where the throttle is adjusted to a first position when the starter does not engage the engine within a first engine speed range, and where the throttle is adjusted to a second position when the starter engages the engine within the first engine speed range, the second position more open than the first position.
1 more element
A vehicle system, comprising:
- an engine including a throttle;
- a dual mass flywheel (DMF) including a first side mechanically coupled to the engine;
- a driveline disconnect clutch mechanically including a first side coupled to a second side of the dual mass flywheel;
- a starter including a base state where the starter is not engaged to the engine;
- a transmission selectively coupled to the engine via the driveline disconnect clutch;
- and
- a controller including non-transitory instructions executable to adjust a position of the throttle during an engine stop based on whether or not the starter engages the engine in response to an engine stop request and before the engine stops, where the throttle is adjusted to a first position in response to the starter not engaging the engine, and where the throttle is adjusted to a second position in response to the starter engaging the engine, the second position more open than the first position.
4 more elements
Dependencies are inferred from the claim text.