摘要:
A piston (10) for an internal combustion engine has discrete, cylindrical support surfaces (18, 24) for supporting a piston pin, wherein, between at least two support surfaces (18, 24), there is provided a recess (26) which has a radial depth of at least 10% of half of the distance between two opposite support surfaces.
摘要:
A piston made of cast steel or gray cast iron for an internal combustion engine comprises a cooling channel, shaft walls (16, 18) and connecting walls (20) between the shaft walls (16, 18) and is asymmetrical between the pressure side and the back-pressure side, in the direction of the piston axis, in respect of the width of the shaft walls (16, 18) and/or the thickness and/or dimensions of the connecting walls (20). A method for manufacturing said piston is also described.
摘要:
A holder for a piston of an internal combustion engine used for machining the piston (30) comprises at least two positioning elements (14) which are adapted to cooperate with surfaces (24) on the piston (20); at least the dimension of at least one of said positioning elements (14) in the direction extending perpendicularly to the piston axis is smaller than the radius of the piston (20) that is to be machined.