公开(公告)号：US10107327B2

公开(公告)日：2018-10-23

申请号：US15285902

申请日：2016-10-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Fabio Numidi ,  Giuliano Sperlinga

IPC: F16C3/08 ,  F02B75/32 ,  F16C3/06 ,  F16C7/02

Abstract: A crankshaft for an internal combustion engine includes a shaft body having a body rotation axis, with at least one crank pin for coupling a connecting rod to the crankshaft. The crank pin is connected to the shaft body in an offset manner with respect to the body rotation axis by two crank arms. Each arm has an arm surface facing one to the other with the crank pin extending between the arm surfaces. At least one of the arm surfaces is provided with a protrusion extending from the arm surface and configured to avoid contact between the arm surface and the connecting rod.

公开(公告)号：US20200063827A1

公开(公告)日：2020-02-27

申请号：US16113617

申请日：2018-08-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alessio Courtial ,  Giuseppe Grioli ,  Paolo Marocco ,  Giuliano Sperlinga

IPC: F16F15/26 ,  F16F15/28 ,  F02B75/20 ,  F16H1/28 ,  F16H1/46

Abstract: An internal combustion engine includes a crankshaft including an outer crankshaft gear and an in-line balance shaft system coupled to the crankshaft. The in-line balance shaft system is configured to balance reciprocating inertial forces of the internal combustion engine, the in-line balance shaft system is configured to provide concurrent and counter-rotating balance forces. The in-line balance shaft system includes a planetary gear set coupled to the crankshaft. The planetary gear set is coupled to the outer crankshaft gear such rotation of the crankshaft drives the planetary gear set. The planetary gear set includes an input gear and an output gear. The input gear is coupled to the crankshaft such that rotation of the crankshaft causes rotation of the input gear.

公开(公告)号：US20190309792A1

公开(公告)日：2019-10-10

申请号：US15948041

申请日：2018-04-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alessio Courtial ,  Giuliano Sperlinga

IPC: F16C3/20 ,  F16C11/02 ,  F16C19/50 ,  F16F15/28 ,  F16F15/32

Abstract: Provided herein are crankshafts comprising a first and second bearing journal both aligned along a crankshaft rotation axis, a first counterweight throw, a web throw including a first web and a second web coupled via a second crankpin, wherein the first web is coupled to the first counterweight throw via the first bearing journal, and a second counterweight throw coupled to the second web via the second bearing journal. The first web and second web each have a center of gravity (COG) offset from a plane defined by the crankshaft rotation axis and a longitudinal axis of the second crankpin. The COGs of each web can be on opposite sides of a plane defined by the crankshaft rotation axis and a longitudinal axis of the second crankpin. The COGs of each web can be substantially symmetrical relative to the plane.