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Technical features and description
Lubrication system
Outline
For the first time in a single-cylinder engine, a trochoid type oil pump has been adopted in order to
improve lubrication performance.
The oil hole in the crankshaft allows oil to lubricate the crankpin and connecting rod.
Oil pump and engine oil flow
The oil pump is driven by the camshaft.
The oil that has been pumped out by the oil pump flows into the camshaft, and it is then sent to the
upper part of the engine to lubricate the crankshaft journal bearing.
After that, the oil flows down to the crankshaft, and then it is splashed by the rotational force of the
crankshaft to lubricate all parts of the engine.
There is an oil hole in the crankshaft.
The oil entered through the oil hole will flow down to the crankpin to lubricate the crankpin and con-
necting rod.
a Oil pump
b Camshaft
c Crankshaft journal bearing
d Crankshaft
a Oil hole
b Crankpin
A Engine oil flow
B Splashing oil
A
B
a
c
d
a
b
b
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