Vehicle propulsion systems and methods
First Claim
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1. A vehicle engine system comprising:
- a combustion engine configured to provide a propulsion torque to satisfy a propulsion demand in response to a driver input;
a controller programmed to receive data indicative of at least one upcoming driving event, and issue a command to impart a predetermined velocity profile based on the at least one upcoming driving event, wherein the predetermined velocity profile is arranged to optimize a performance attribute of the combustion engine and preempt the driver input;
wherein the at least one upcoming driving event includes detection of a pedestrian in a crosswalk, and the controller is further programmed to;
generate a forecasted duration as a remaining duration of time for the pedestrian in the crosswalk, the forecasted duration being based at least partially on a total length of the crosswalk, a distance traversed by the pedestrian and a pedestrian traversal speed; and
deactivate the engine in response to the forecasted duration being greater than a predetermined time threshold.
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Abstract
A vehicle engine system includes a combustion engine configured to provide a propulsion torque to satisfy a propulsion demand in response to a driver input. The engine system also includes a controller programmed to receive data indicative of at least one upcoming driving event, and issue a command to impart a predetermined velocity profile based on the upcoming driving event. The predetermined velocity profile is arranged to optimize a performance attribute of the combustion engine and preempt the driver input.
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Citations
14 Claims
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1. A vehicle engine system comprising:
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a combustion engine configured to provide a propulsion torque to satisfy a propulsion demand in response to a driver input; a controller programmed to receive data indicative of at least one upcoming driving event, and issue a command to impart a predetermined velocity profile based on the at least one upcoming driving event, wherein the predetermined velocity profile is arranged to optimize a performance attribute of the combustion engine and preempt the driver input; wherein the at least one upcoming driving event includes detection of a pedestrian in a crosswalk, and the controller is further programmed to; generate a forecasted duration as a remaining duration of time for the pedestrian in the crosswalk, the forecasted duration being based at least partially on a total length of the crosswalk, a distance traversed by the pedestrian and a pedestrian traversal speed; and deactivate the engine in response to the forecasted duration being greater than a predetermined time threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling a vehicle propulsion system comprising:
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receiving a driver input indicative of torque demand; receiving data indicative of at least one of static route data and dynamic route data; forecasting at least one upcoming driving event based on the received data, the at least one upcoming driving event including detection of a pedestrian in a crosswalk; generating a forecasted duration as a remaining duration of time for the pedestrian in the crosswalk, the forecasted duration being based at least partially on a total length of the crosswalk, a distance traversed by the pedestrian and a pedestrian traversal speed; and adjusting an engine output torque to optimize a performance parameter according to a selected propulsion mode and preempt the driver input, wherein adjusting the engine output torque includes deactivating the engine in response to the forecasted duration being greater than a predetermined time threshold. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification