US 12,280,810 B2
Method and system for multi-fuel engine
Jacob Kenneth Pedder, State College, PA (US); James Robert Mischler, Lawrence Park, PA (US); and Ajith Kuttanair Kumar, Ashburn, VA (US)
Assigned to Transportation IP Holdings, LLC, Norwalk, CT (US)
Filed by Transportation IP Holdings, LLC, Norwalk, CT (US)
Filed on May 31, 2023, as Appl. No. 18/326,591.
Claims priority of provisional application 63/366,808, filed on Jun. 22, 2022.
Prior Publication US 2023/0415791 A1, Dec. 28, 2023
Int. Cl. B61C 7/04 (2006.01); B60L 58/12 (2019.01); B60L 58/13 (2019.01); B60L 58/14 (2019.01); B60L 58/15 (2019.01); B60W 20/13 (2016.01); F02D 19/06 (2006.01); F02D 19/08 (2006.01)
CPC B61C 7/04 (2013.01) [B60W 20/13 (2016.01); F02D 19/061 (2013.01); F02D 19/081 (2013.01); B60L 58/12 (2019.02); B60L 58/13 (2019.02); B60L 58/14 (2019.02); B60L 58/15 (2019.02); B60W 2300/44 (2013.01); B60W 2510/244 (2013.01); B60W 2710/0616 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for a vehicle system having a multi-fuel engine and a battery, wherein the vehicle system is a train comprising a plurality of vehicles, the method comprising:
in a first mode of operation, adjusting a substitution ratio (SR) and drawing charge from the battery;
in a second mode of operation, supplying charge to the battery to maintain tractive effort and a desired SR, wherein the battery is configured to provide an electrical power to meet at least a portion of a requested power, the portion of the requested power separate from a power of the multi-fuel engine;
balancing power production of multi-fuel engines of the plurality of vehicles of the train in response to the requested power being equal to a threshold power, wherein balancing power production of multi-fuel engines of the plurality of vehicles further comprises operating one or more locomotives at a SR lower than the desired SR; and
increasing a number of vehicles of the plurality of vehicles operating at the desired SR.