Patent ID: 9200564
Filing Date: 2015-12-01
Classification: F02B

Abstract:
1. A crankshaft system for providing variable compression ratio in an internal combustion engine comprising a block and a cylinder head, the system comprising: a crankshaft comprising: a plurality of main bearing caps, each main bearing cap with a first end and a second end, each of the first ends pivotally coupled to the block, for rotatably supporting the main bearing journals; a plurality of actuators, each disposed proximate the second ends of the plurality of main bearing caps, for moving the central portion of the crankshaft between a first, low compression ratio (LCR) position and a second, high compression ratio (HCR) position; wherein the first and second outputs are substantially coaxial with the two or more main bearing journals of the central portion in a middle compression ratio (MCR) position; and wherein the first and second outputs rotate about a fixed longitudinal axis.