Vehicle propulsion systems and methods
First Claim
1. A host vehicle comprising:
- a vehicle body with a plurality of road wheels;
a combustion engine configured to provide a propulsion torque to drive one or more of the road wheels and thereby propel the host vehicle;
a sensor configured to detect a reference vehicle; and
a controller programmed to;
determine a current host vehicle location and a current host vehicle heading of the host vehicle,receive data with location coordinates indicative of a reference vehicle location of the reference vehicle,determine a path between the current host vehicle location and an upcoming intersection,transform the location coordinates of the reference vehicle location into transformed location coordinates complementary with a coordinate system relative to the current host vehicle location and heading,determine if the reference vehicle will move within the path ahead of the host vehicle and stop by estimating a trajectory path of the reference vehicle based on the transformed location coordinates of the reference vehicle location,in response to the reference vehicle moving within the path ahead of the host vehicle, forecast an intervening stop location and a path clearance time at which the host vehicle is determined to traverse the upcoming intersection,reduce an output of and/or deactivate the combustion engine prior to the host vehicle arriving at the intervening stop location in response to the path clearance time being greater than a predetermined time threshold,receive data indicative of a stopped state of the reference vehicle when stopped at the intervening stop location between the current host vehicle location and an infrastructure traffic device, andforecast when the reference vehicle will depart from the intervening stop location, wherein a duration of the host vehicle at the intervening stop location is based on the forecast of when the reference vehicle will depart from the intervening location.
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Accused Products
Abstract
A host vehicle includes a combustion engine configured to provide a propulsion torque to satisfy a propulsion demand. The vehicle also includes at least one sensor configured to detect a position of a reference vehicle. A vehicle controller is programmed to determine a path between a current host vehicle location and an upcoming intersection. The controller is also programmed to forecast a path clearance time at which the host vehicle is able to traverse the intersection in response to sensor data indicating the reference vehicle moving within the path ahead of the host vehicle. The controller is further programmed to deactivate the engine prior to a host vehicle stop based on the path clearance time being greater than a time threshold.
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Citations
19 Claims
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1. A host vehicle comprising:
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a vehicle body with a plurality of road wheels; a combustion engine configured to provide a propulsion torque to drive one or more of the road wheels and thereby propel the host vehicle; a sensor configured to detect a reference vehicle; and a controller programmed to; determine a current host vehicle location and a current host vehicle heading of the host vehicle, receive data with location coordinates indicative of a reference vehicle location of the reference vehicle, determine a path between the current host vehicle location and an upcoming intersection, transform the location coordinates of the reference vehicle location into transformed location coordinates complementary with a coordinate system relative to the current host vehicle location and heading, determine if the reference vehicle will move within the path ahead of the host vehicle and stop by estimating a trajectory path of the reference vehicle based on the transformed location coordinates of the reference vehicle location, in response to the reference vehicle moving within the path ahead of the host vehicle, forecast an intervening stop location and a path clearance time at which the host vehicle is determined to traverse the upcoming intersection, reduce an output of and/or deactivate the combustion engine prior to the host vehicle arriving at the intervening stop location in response to the path clearance time being greater than a predetermined time threshold, receive data indicative of a stopped state of the reference vehicle when stopped at the intervening stop location between the current host vehicle location and an infrastructure traffic device, and forecast when the reference vehicle will depart from the intervening stop location, wherein a duration of the host vehicle at the intervening stop location is based on the forecast of when the reference vehicle will depart from the intervening location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of controlling a propulsion system of a host vehicle, the host vehicle including a vehicle body, a plurality of road wheels, and an engine operable to drive one or more of the road wheels, the method comprising:
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determining a current host vehicle location and a current host vehicle heading of the host vehicle; receiving data with location coordinates indicative of a reference vehicle location of a reference vehicle; determining a path between the current host vehicle location and an upcoming traffic stop location; transforming the location coordinates of the reference vehicle location into transformed location coordinates complementary with a coordinate system relative to the current host vehicle location and heading; determining if the reference vehicle will move within the path ahead of the host vehicle and stop by estimating a trajectory path of the reference vehicle based on the transformed location coordinates of the reference vehicle location; forecasting an intervening stop location of the host vehicle and a path clearance time at which the host vehicle is determined to traverse the upcoming traffic stop location in response to the reference vehicle moving within the path ahead of the host vehicle; reducing an engine output of and/or deactivating the engine prior to the host vehicle arriving at the intervening stop location in response to the path clearance time being greater than a predetermined threshold, receiving data indicative of a stopped state of the reference vehicle when stopped at the intervening stop location between the current host vehicle location and an infrastructure traffic device, and forecasting when the reference vehicle will depart from the intervening stop location, wherein a duration of the host vehicle at the intervening stop location is based on the forecasting of when the reference vehicle will depart from the intervening location. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification