Patent ID: 7861819

Claim:
A vehicle drive line ( 1 ), comprising, an engine ( 2 ) provided with an outgoing crank shaft ( 3 ), a main transmission unit ( 4 ), an intermediate drive shaft ( 8 ) that indirectly connects the main transmission unit ( 4 ) with the crank shaft ( 3 ), the intermediate drive shaft ( 8 ) being connected to the crank shaft ( 3 ) through a second transmission unit ( 7 ), and being offset in relation to the crank shaft ( 3 ), wherein the vehicle drive line comprises a circuit ( 15 ) through which a liquid used for lubricating the main transmission unit ( 4 ) is conducted to the second transmission unit ( 7 ) and used for cooling purposes in the latter, and then conducted back to the main transmission unit ( 4 ), said circuit ( 15 ) providing the exclusive circuit for cooling said main transmission unit ( 4 ) and said second transmission unit ( 7 ), said circuit ( 15 ) comprising a first pump ( 16 ) arranged to pump said liquid from the main transmission unit ( 4 ) to the second transmission unit ( 7 ), and a second pump ( 17 ) arranged to pump said liquid from the second transmission unit ( 7 ) to the main transmission unit ( 4 ).