US 11,718,298 B2
Methods and systems for coordinating predictive cruise control, engine-off coasting, and hybrid power split
Rohinish Gupta, Columbus, IN (US); Jonathan A. Dickson, Columbus, IN (US); Kenneth M. Follen, Greenwood, IN (US); Apurva Arvind Chunodkar, Greenwood, IN (US); Arun Prakash Thunga Gopal, Columbus, IN (US); and Manik Narula, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Oct. 21, 2020, as Appl. No. 17/75,826.
Prior Publication US 2022/0118980 A1, Apr. 21, 2022
Int. Cl. B60W 30/18 (2012.01); B60W 20/12 (2016.01); B60W 20/15 (2016.01); B60W 40/105 (2012.01); B60W 10/08 (2006.01); B60W 40/06 (2012.01)
CPC B60W 30/18127 (2013.01) [B60W 10/08 (2013.01); B60W 20/12 (2016.01); B60W 20/15 (2016.01); B60W 40/06 (2013.01); B60W 40/105 (2013.01); B60W 2510/0208 (2013.01); B60W 2510/244 (2013.01); B60W 2556/45 (2020.02)] 26 Claims
OG exemplary drawing
 
1. A hybrid vehicle comprising:
an engine;
a drivetrain mechanically coupled with the engine, comprising a clutch and a transmission;
an electric machine mechanically coupled with the transmission;
an energy storage device coupled with the electric machine; and
a controller operatively coupled with the engine, the drivetrain, and the electric machine, the controller configured to:
receive lookahead information within a lookahead window;
receive present state information of the hybrid vehicle;
determine, during the lookahead window based on the lookahead information and the present state information, a predicted coasting opportunity exceeding a predetermined threshold;
determine a cruise control reference speed, a power split between the engine and the electric machine, and a timing of enabling engine-off coasting during the predicted coasting opportunity;
deactivate the engine and disengage the clutch at a start of the predicted coasting opportunity in response to enabling the engine-off coasting;
activate the electric machine to facilitate regenerative braking to charge the energy storage device when the engine is deactivated; and
operate the engine during a portion of the lookahead window to provide additional power to increase a speed of the vehicle when a power demand for the vehicle decreases, such that the additional power provided by the engine assists in charging the energy storage device via the regenerative braking before the power demand increases.