| 摘要 |
An internal combustion engine, in particular a large two-stroke crosshead engine for propelling a ship, has a number of cylinders (Cn) each of which has a piston connected with an associated throw (2, 3) in a crankshaft (1) common to the cylinders, the throw being so connected through main journals journalled in main bearings (MBn) that adjacent throws have a predetermined mutual angularity ( alpha ) and that said angularity is varying for at least some of the neighbouring throws. A control device doses a larger amount of oil to cylinders (Cn) whose throw (2, 3) forms a large angle ( alpha ) with the adjacent throws than is dosed to the cylinders whose throw forms the smallest angle with a neighbouring throw. In an eight-cylinder engine the control device may dose most oil to cylinders Nos. 1, 2, 7 and 8. In a twelve-cylinder engine the control device may dose least oil to cylinders Nos. 9 and 10.
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