초록 ▼

An oil tank of large capacity is integrally mounted directly to a front side of a front case cover in a power unit including a hydrostatic type continuously variable transmission. The power unit is driven by a crankshaft within a crankcase, and a lower portion of the oil tank is connected through an

An oil tank of large capacity is integrally mounted directly to a front side of a front case cover in a power unit including a hydrostatic type continuously variable transmission. The power unit is driven by a crankshaft within a crankcase, and a lower portion of the oil tank is connected through an inlet and an outlet both formed in the front case cover to an oil pump disposed inside the front case cover in order to dispense with piping and fittings required when a tank is located separately from a power unit.

대표청구항 ▼

1. A power unit having an internal combustion engine, a side portion, a plurality of components, a hydrostatic continuously variable transmission, and a lubricating system, said power unit and lubricating system comprising:an oil tank; at least one oil pan for the internal combustion engine; a feed

1. A power unit having an internal combustion engine, a side portion, a plurality of components, a hydrostatic continuously variable transmission, and a lubricating system, said power unit and lubricating system comprising:an oil tank; at least one oil pan for the internal combustion engine; a feed pump for feeding lubricating oil in the oil tank to the plurality of components in the power unit; at least one scavenging pump for feeding oil which has stayed in the oil pan back to the oil tank; wherein said oil tank for the power unit is mounted directly to the side portion of the power unit; an initial cooling passage extending from a lower portion of said oil tank to an upper portion of said tank along a rear side portion of said tank, wherein said initial cooling passage is connected to an outlet in communication with a discharge side of each scavenging pump; an upper end portion of the initial cooling passage is in communication with a horizontal passage extending from said rear side portion of the tank to said front side portion of the tank; and a front end of the horizontal passage is formed as a discharge port connected to an oil cooler.