US Patent No. 9,983,583

AUTONOMOUS DRIVING WITH DYNAMIC SKIP FIRE


Patent No. 9,983,583
Issue Date May 29, 2018
Title Autonomous Driving With Dynamic Skip Fire
Inventorship Ram Subramanian, Saratoga, CA (US)
Louis J. Serrano, Los Gatos, CA (US)
Matthew A. Younkins, San Jose, CA (US)
Assignee Tula Technology, Inc., San Jose, CA (US)

Claim of US Patent No. 9,983,583

9. A method of controlling the operation of an engine, the method comprising:determining a desired engine torque;
determining a proposed effective operational displacement from a plurality of potentially available effective operational displacements suitable for delivering the desired engine torque, the proposed effective operational displacement being the most fuel efficient effective operational displacement among the plurality of available effective operational displacements;
determining whether there is an alternative effective operational displacement that is capable of delivering an alternative engine torque that is within a designated range of the desired engine torque with better fuel economy than would be provided by operation at the proposed effective operational displacement, the alternative engine torque being different than the desired engine torque; and
when it is determined that an alternative effective operational displacement that is capable of delivering an alternative engine torque that is within the designated range of the desired torque with better fuel economy than the desired engine torque exists, determining whether the alternative engine torque is suitable for use under current operating conditions, and if so, directing operation of the engine at the alternative effective operational displacement to deliver the alternative engine torque, wherein the designated range does not exceed 5% of the desired engine torque such that the alternative effective operational displacement is capable of delivering at least 95% of the desired engine torque.