Rear defrost control in stop/start vehicle
First Claim
1. A method for controlling an engine stop/start system in a vehicle, the method comprising:
- in response to receiving an electric defroster activation request when the engine is auto stopped, automatically activating a defroster indicator;
automatically commanding an engine auto start in response to a calibrated time interval expiring, the time interval initiated upon receiving the electric defroster activation request; and
automatically activating a defroster after the engine has been auto started.
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Accused Products
Abstract
A method for controlling a stop/start vehicle includes commanding an engine auto start in response to a calibratable time interval elapsing after receiving an electric defroster activation request when the engine is auto stopped. The method may further include activating a defroster after the engine has been auto started. The method may additionally include activating a defroster indicator when the electric defroster activation is received. The method may further include inhibiting an engine auto stop in response to an electric defroster activation request when the engine is running and further in response to a battery charge being insufficient to support a predicted current draw, and signaling an alert to a vehicle driver.
72 Citations
13 Claims
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1. A method for controlling an engine stop/start system in a vehicle, the method comprising:
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in response to receiving an electric defroster activation request when the engine is auto stopped, automatically activating a defroster indicator; automatically commanding an engine auto start in response to a calibrated time interval expiring, the time interval initiated upon receiving the electric defroster activation request; and automatically activating a defroster after the engine has been auto started. - View Dependent Claims (2, 3, 4, 5)
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6. A stop/start vehicle comprising:
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an electric defroster having a defroster indicator; and at least one controller configured to activate the defroster indicator when a defroster activation request is received and command an engine auto start a calibrated time interval after the defroster activation request is received. - View Dependent Claims (7, 8, 9)
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10. A vehicle comprising:
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an engine configured to auto stop and auto start; an electric defroster; a defroster indicator; and a controller configured to activate the defroster indicator upon receiving an electric defroster activation request while the engine is auto stopped, command an engine auto start in response to a pre-selected time interval expiring, the time interval initiated upon receiving the electric defroster activation request when the engine is auto stopped, and to inhibit an engine auto stop in response to an electric defroster activation request and a battery charge being insufficient to support an engine-off electric current draw. - View Dependent Claims (11, 12, 13)
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Specification