公开(公告)号：US20170183989A1

公开(公告)日：2017-06-29

申请号：US15309463

申请日：2015-04-29

Applicant: BorgWarner Inc.

Inventor： Mark M. WIGSTEN ,  Daniel F. JAKIELA ,  Randy W. ADLER ,  Michael Loren SMART ,  James SISSON

IPC: F01L9/02

CPC classification number: F01L9/021 ,  F01L9/02

Abstract: A hydraulic valve actuation system (30) and a method of assembly can include a plurality of hydraulically actuatable valves (34a, 34b, 34c, 34d, 134a, 134b, 134c, 134d) operably associated with an internal combustion engine (86) having a crankshaft (50) rotatable about a longitudinal axis. The actuation system (30) can include at least one cam lobe (52) mounted on or integrally formed with the crankshaft for rotation with the crankshaft (50). At least one fluid piston pump (36, 36a, 36b) connected to the at least one cam lobe (52) for generating a reciprocating fluid flow in response to rotation of the at least one cam lobe (52). At least one hydraulically actuated valve (34a, 34b, 34c, 34d, 134a, 134b, 134c, 134d) in fluid communication with the reciprocal fluid flow generated by the at least one fluid piston pump (36, 36a, 36b) to drive the valve (34a, 34b, 34c, 34d, 134a, 134b, 134c, 134d) to be controlled toward an open position.