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US 2013/0340704 A1Published application
Method for machining the connecting rod passage in a cylinder crankcase, cylinder crankcase and engine obtained using the method
AssigneeRENAULT s.a.s.
InventorAndre Gameiro
Life of this patent
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Abstract
A method for machining a passage for a connecting rod in an internal combustion engine crank case upper half, including producing, at a base of the cylinder barrel, a straight cut of cylindrical shape capable of allowing the connecting rod a lateral excursion as a piston moves up and down in the cylinder, using a rotary milling tool which is plunge-operated from underneath the cylinder, and a direction of plunging of the milling tool is oriented at an oblique angle to the axis of the cylinder.
Claims6
1-5. (canceled)
A method for machining a connecting rod passage in a cylinder crankcase of an internal combustion engine, comprising:
- producing at a base of a cylinder shaft a straight cut of cylindrical form, which is capable of allowing lateral travel of the connecting rod when a piston moves up and down in the cylinder, with a rotary milling tool that operates by travel below the cylinder;
- wherein a direction of travel of the milling tool is orientated obliquely relative to the axis of the cylinder.
Dependencies are inferred from the claim text.