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US 2015/0083079 A1Published application
Methods and systems for selective engine starting
AssigneeFord Global Technologies, LLC
InventorsYonghua Li, Siamak Hashemi
Life of this patent
Estimating the term…
Abstract
Systems and methods for starting an engine are described. In one example, engine cranking speed for an engine of a hybrid vehicle is adjusted in response to operating conditions. The engine cranking speed may be reduced when capability of a battery that supplies power to rotate the engine is less than an amount of power to rotate the engine at a higher speed.
Claims20
A method for starting an engine, comprising:
- adjusting an engine cranking speed in response to battery power capability and an amount of power to crank an engine at a desired engine speed;
- and
- cranking the engine at the adjusted cranking speed.
A method for starting an engine, comprising:
- adjusting a battery power capability in response to output of a battery cell having a lowest state of charge among a plurality of battery cells in a battery;
- adjusting an engine cranking speed in response to the battery power capability and power to crank an engine at a desired engine speed;
- and
- cranking the engine at the adjusted cranking speed.
1 more element
A vehicle system, comprising:
- an electric machine;
- an engine in mechanical communication with the electric machine;
- and
- a controller including non-transitory instructions executable by a processor to crank the engine via the electric machine and adjust engine speed in response to battery state of charge and a plurality of predetermined engine cranking speeds.
1 more element
Dependencies are inferred from the claim text.