Cylinder block and crankcase

Details Cylinder block and crankcase Cylinder block and crankcase

1990-02-20

1990-12-04

Dolinar, Andrew M.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

123 4174, F02F 700, F02F 110, F02F 1108

Patent

active

049745697

ABSTRACT:
A combined cylinder block and crankcase for a multi-cylinder light-metal alloy internal-combustion engine has partitioning walls between the cylinders. The cylinders are surrounded by cooling-water channels. Combustion cylinder spaces are disposed between the combined cylinder block and crankcase and a cylinder head. In order to ensure that during the operation of the internal-combustion engine the cylinder diameters (adjacent to the combustion spaces) are kept within fixed tolerances specifically in the area of the partitioning walls, thermal-expansions slots are provided in the partitioning walls which lead to the cooling-water channels. These thermal-expansions slots are sealed off with respect to the cooling-water channels so that the partitioning walls are not impaired by cavitation.

REFERENCES:
patent: 4561388 (1985-12-01), Gwinner et al.
patent: 4856462 (1989-08-01), Ushio

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