Title:
CRANKSHAFT FOR AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2012/030816
Kind Code:
A3
Abstract:
A crankshaft for an internal combustion engine comprises at least four main journals aligned on a crankshaft axis of rotation and at least three crankpins, each disposed about a respective crankpin axis and positioned between the main journals. Each of the respective crankpin axes is oriented parallel to, and spaced radially from, the crankshaft axis of rotation. Each of the crankpins is joined to a pair of crank arms for force transmission between the crankpin and the pair of crank arms. Each pair of crank arms is joined to a respective main journal for transmitting torque between the pair of crank arms and the main journal. At least two of the crankpins are positioned substantially in phase with one another and a third crankpin being positioned approximately 180 degrees apart from the at least two crankpins.
Inventors:
HAYMAN ALAN W (US)
MCALPINE ROBERT S (US)
MCALPINE ROBERT S (US)
Application Number:
PCT/US2011/049722
Publication Date:
April 03, 2014
Filing Date:
August 30, 2011
Export Citation:
Assignee:
GM GLOBAL TECH OPERATIONS INC (US)
HAYMAN ALAN W (US)
MCALPINE ROBERT S (US)
HAYMAN ALAN W (US)
MCALPINE ROBERT S (US)
International Classes:
F02B75/32
Foreign References:
| US20090277414A1 | 2009-11-12 | |||
| US20080127915A1 | 2008-06-05 |
Attorney, Agent or Firm:
WOOD, David, P. (20 Church Street22nd Floo, Hartford Connecticut, US)
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