Method and system for inhibiting engine idle stop based on operating conditions
First Claim
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1. A method of controlling a vehicle including an engine, the vehicle at standstill, comprising:
- during a first engine idling condition, shutting down the engine in response to the vehicle being located in an enclosed parking lot; and
during a second engine idling condition, delaying the engine shutdown in response to the vehicle being located in an open space, the delay adjusted based on an ambient humidity of the open space and an operator proximity to the vehicle being greater than a threshold.
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Abstract
Methods and systems are provided for controlling the automatic shutdown of an idling vehicle engine. When the vehicle is parked in an enclosed space, the idling engine may be automatically shutdown, while when the vehicle is parked in an open space, the automatic shutdown may be delayed based on an ambient temperature. In this way, the vehicle cabin may be maintained at a temperature that provides enhanced driver comfort while allowing wasteful engine idling to be reduced.
42 Citations
10 Claims
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1. A method of controlling a vehicle including an engine, the vehicle at standstill, comprising:
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during a first engine idling condition, shutting down the engine in response to the vehicle being located in an enclosed parking lot; and during a second engine idling condition, delaying the engine shutdown in response to the vehicle being located in an open space, the delay adjusted based on an ambient humidity of the open space and an operator proximity to the vehicle being greater than a threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle system, comprising:
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an engine; an operator ignition interface for initiating and terminating operation of the engine; a passive key communicatively coupled to the operator ignition interface and configured to initiate and/or terminate operation of the engine based on operator input; a temperature sensor located on an exterior surface of the vehicle and configured to estimate an ambient temperature; an ambient humidity sensor; a navigation system including one or more location sensors configured to estimate a location of the vehicle; and an engine controller with computer readable instructions for; extending an idle time before an automatic shutdown of an idling engine based on the ambient temperature estimated over a duration of the standstill and ambient humidity in response to an operator proximity to the vehicle being greater than a threshold. - View Dependent Claims (8, 9, 10)
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Specification