Patent ID: 11859520
Assignee: FCA US LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An electronic phaser system for use in an engine system, the electronic phaser system comprising:
an intake camshaft including a plurality of camshaft lobes;
an electronic phaser that couples a gearbox to the intake camshaft, the electronic phaser configured to rotationally adjust the intake camshaft to a target rotational position relative to a crankshaft of the engine system; and
an engine control module (ECM) configured to:
(i) determine an optimal cranking compression ratio based on one of an engine stop request and an engine start request;
(ii) convert the optimal cranking compression ratio into a camshaft lobe centerline position; and
(iii) command the electronic phaser to rotate the intake camshaft to the target rotational position which corresponds to the camshaft lobe centerline position so as to achieve the optimal cranking compression ratio;

wherein the optimal cranking compression ratio is at least 5:1 and at most 6:1.