CPC F02B 33/04 (2013.01) [F02F 3/24 (2013.01); F16C 3/20 (2013.01); F16C 2322/50 (2013.01)] | 20 Claims |
1. A crankshaft for a crankcase scavenged two stroke piston engine,
wherein the crankshaft is configured to rotate around a rotation axis during operation,
and wherein the crankshaft comprises:
a crankpin configured to move in a crank plane upon rotation of the crankshaft, and
a first and a second counterweight arranged on either side of the crank plane,
wherein the first counterweight has a first outer radius measured from the rotation axis and the second counterweight has a second outer radius measured from the rotation axis,
wherein the first outer radius is smaller than the second outer radius, and
wherein the second counterweight comprises a recess at a radially outer portion thereof, and wherein the recess extends in a first angular sector of the second counterweight measured from the rotation axis, wherein the first angular sector is smaller than a total angular sector occupied by the second counterweight measured from the rotation axis.
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