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US 11,440,532 B2Granted
Method and system for controlling vehicle engine pull-down
AssigneeFord Global Technologies, LLC
InventorsWalter Joseph Ortmann, Ashish Kumar Naidu, Thomas William Megli, Mrudula Uday Orpe
Life of this patent
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Abstract
A vehicle includes an engine, a wireless transceiver that receives attribute data, and a controller. The controller selectively shuts down the engine responsive to such requests based on whether a predicted fuel savings associated with a predicted engine off duration is greater than a predicted fuel usage to restart the engine.
Claims18
A vehicle comprising:
- an engine;
- a wireless transceiver configured to receive attribute data;
- and
- a controller programmed to selectively shut down the engine based on whether a predicted fuel savings associated with a predicted engine off duration is greater than a predicted fuel usage to restart the engine, wherein the predicted fuel usage to restart the engine varies with a post engine restart target speed derived from the attribute data such that for a first engine pull down request and a corresponding predicted engine off duration, the engine is shut down, and for a second engine pull down request having a same corresponding predicted engine off duration, the engine is not shut down.
1 more element
A method comprising:
- selectively shutting down an engine based on whether a predicted fuel savings associated with a predicted engine off duration is greater than a predicted fuel usage to restart the engine, wherein the predicted fuel usage to restart the engine varies with a post engine restart target power derived from attribute data.
A powertrain system comprising:
- an engine;
- and
- a controller programmed to
- responsive to identifying a route, predict a motion pattern reflecting a predicted speed at different sections along the route using attribute data,
- responsive to a power demand falling below a threshold, compare a saved fuel amount with an engine pull-up fuel consumption, wherein the saved fuel amount depends on a length of engine pull-down predicted as a part of the motion pattern, and the engine pull-up fuel consumption depends on a desired engine speed to match a predicted speed as a part of the motion pattern, and
- responsive to the saved fuel amount being less than the engine pull-up fuel consumption, inhibit engine pull-down.
3 more elements
Dependencies are inferred from the claim text.