Power unit
First Claim
1. A power unit which comprises an engine (13) and a transmission mechanism (T) including a hydro static transmission (24) which are integrally formed and in which a common oil is shared as a lubricating oil and as an operating oil, said power unit further comprising:
- oil feed means (70, 15) for circulating said common oil between said engine (13) and said hydro static transmission (24), and cooling means (40d, 77) for cooling said common oil in an oil feed route (R) from said engine (13) to said hydro static transmission (24).
3 Assignments
0 Petitions
Accused Products
Abstract
In a power unit comprising an engine (13) and an HST (24) which are formed into an integral body, a lubricating oil for use in the engine and an operating oil of the HST (24) are commonized. After being cooled, the common oil is fed from the side of the engine (13) to the HST (24). Such arrangement suppresses the drop in viscosity of the common oil and prevents the drop in efficiency and the occurrence of seizing on the side of the HST (24).
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Citations
6 Claims
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1. A power unit which comprises an engine (13) and a transmission mechanism (T) including a hydro static transmission (24) which are integrally formed and in which a common oil is shared as a lubricating oil and as an operating oil,
said power unit further comprising: -
oil feed means (70, 15) for circulating said common oil between said engine (13) and said hydro static transmission (24), and cooling means (40d, 77) for cooling said common oil in an oil feed route (R) from said engine (13) to said hydro static transmission (24). - View Dependent Claims (2, 3, 4, 5, 6)
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Specification