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    • 45. 发明授权
    • Compression ratio variable device of internal combustion engine
    • 内燃机压缩比可变装置
    • US07353785B2
    • 2008-04-08
    • US10519940
    • 2003-07-02
    • Takashi KondoMakoto Hirano
    • Takashi KondoMakoto Hirano
    • F02D15/02
    • F02D15/04F02B75/044
    • An internal combustion engine variable compression ratio system is provided that includes a piston inner (5a), a piston outer (5b) that is fitted around the outer periphery of the piston inner (5a) so that it can slide only in the axial direction and is capable of moving between a low compression ratio position (L) and a high compression ratio position (H), a raising member (14) that can pivot around axes of the piston inner and outer (5a, 5b) between a non-raised position (A) and a raised position (B), and an actuator (20) connected to the member (14) and pivoting it to the non-raised position (A) or the raised position (B), in which piston outer high compression ratio position latching means (30b) is disposed between the piston inner (5a) and the piston outer (5b) and operates, when the piston outer (5b) has reached the high compression ratio position (H), so as to prevent relative axial movement of the piston inner (5a) and the piston outer (5b). It is thereby possible to provide a variable compression ratio system that enables the piston outer to be moved to the low compression ratio position and the high compression ratio position simply and reliably without rotating the piston outer.
    • 提供一种内燃机可变压缩比系统,其包括活塞内部(5a),活塞外部(5b),所述活塞内部(5c)围绕所述活塞内部(5a)的外周配合,使得其能够仅在 能够在低压缩比位置(L)和高压缩比位置(H)之间移动;能够围绕活塞的内部和外部(5a,5b)的轴线枢转的提升构件(14) 在非升高位置(A)和升高位置(B)之间,以及连接到所述构件(14)并将其枢转到非升高位置(A)或升高位置(B)的致动器(20) 其中活塞外部高压缩比位置锁定装置(30b)设置在活塞内部(5a)和活塞外部(5b)之间并且当活塞外部(5b)达到高压缩比位置 (H),以防止活塞内部(5a)和活塞外部(5b)的相对轴向运动。 从而可以提供一种可变的压缩比系统,其能够使活塞外部能够简单而可靠地移动到低压缩比位置和高压缩比位置而不旋转活塞外部。