Engine support structure in motorcycle

摘要

A first main frame segment 62 extends rearwardly from a head pipe 4, a second main frame segment 64 pivotally supports a swingarm 12, and an engine casing EC is disposed between the head pipe 4 and the swingarm 12. The engine casing EC includes a crankcase section 28, a cylinder part 30, a cylinder head part 32 and a transmission casing section 34. The first main frame segment 64 includes a first mount portion 56, which is connected with a front portion of the cylinder part 30, and a second mount portion 58 which is connected with a rear portion of the cylinder head part 32. The second main frame segment 64 includes a third mount portion 60 which is connected with a rear portion of the transmission casing section 34.

主权项

1. An engine support structure for a motorcycle, which comprises:
a first main frame segment extending rearwardly from a head pipe to support a front wheel; a second main frame segment to pivotally support a swingarm to support a rear wheel; and an engine casing interposed between the head pipe and the swingarm; wherein the engine casing includes a crankcase section to support a crankshaft, a cylinder forming section protruding upwardly from a front portion of the crankcase section and a transmission casing section disposed rearwardly of the crankcase section; wherein the first main frame segment includes a first mount portion, which is connected with a front portion of the cylinder forming section, and a second mount portion which is connected with a rear portion of the cylinder forming section; and wherein the second main frame segment includes a third mount portion which is connected with a rear portion of the transmission casing section.