15.
    发明专利
    未知

    公开(公告)号:FR2545542B1

    公开(公告)日:1987-06-26

    申请号:FR8307524

    申请日:1983-05-05

    Applicant: RENAULT

    Inventor: CASTAREDE ARMAND

    Abstract: A piston (2) is of refractory materials, particularly for a compression-ignition engine of the type having a head (4), a skirt (6) and their mutual fastening means. According to the invention, this skirt (6) is formed entirely of a refractory material and has two semicylindrical parts (18, 20) each of which has ribs (22) and a semispherical cavity (36, 38). After assembly, the cavities form a ball joint seat for the small end of a piston rod along a plane containing the longitudinal axis (14) of the piston (2). Application is to compression-ignition engines with high efficiency.

    18.
    发明专利
    未知

    公开(公告)号:FR2545542A1

    公开(公告)日:1984-11-09

    申请号:FR8307524

    申请日:1983-05-05

    Applicant: RENAULT

    Inventor: CASTAREDE ARMAND

    Abstract: A piston (2) is of refractory materials, particularly for a compression-ignition engine of the type having a head (4), a skirt (6) and their mutual fastening means. According to the invention, this skirt (6) is formed entirely of a refractory material and has two semicylindrical parts (18, 20) each of which has ribs (22) and a semispherical cavity (36, 38). After assembly, the cavities form a ball joint seat for the small end of a piston rod along a plane containing the longitudinal axis (14) of the piston (2). Application is to compression-ignition engines with high efficiency.

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