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(11) | EP 2 674 641 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Engine and straddle type vehicle |
(57) An engine of the invention includes a crankshaft including a crank web; a clutch
shaft disposed behind the crankshaft and provided with a clutch; a balancer shaft
disposed in front of the crankshaft and provided with a balancer weight; a crankcase
for accommodating the crankshaft, the balancer shaft and the clutch shaft; a cylinder
section attached to the crankcase; and a starter motor disposed above the cylinder
section and capable of driving the crankshaft, wherein the balancer shaft is disposed
between a first horizontal surface intersecting an axial center of the crankshaft
when the engine is mounted on a vehicle and a second horizontal surface intersecting
a lower end of the crank web when the engine is mounted on the vehicle, the balancer
weight is disposed below the first horizontal surface, and the starter motor is disposed
forward of a vertical surface intersecting the axial center of the crankshaft when
the engine is mounted on the vehicle.
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