发明名称 |
Variable valve performance apparatus for engine |
摘要 |
<p>A valve characteristic control apparatus is provided with a simple structure in which a cam shaft having three-dimensional cams is axially displaced and the cam shaft is rotated with respect to a crank shaft by a ring gear. An axial driving mechanism axially displaces the intake cam shaft and thereby changes working angles of the three-dimensional cams. In this case, engagement of a spline formed on the cam shaft with teeth formed on an inner peripheral surface of the ring gear allows the cam shaft to axially move with respect to a pulley integrated with the crank shaft. A rotational driving mechanism axially displaces the ring gear, so that a helical spline formed on the pulley engages teeth formed on an outer peripheral surface of the ring gear and a spline formed on the cam shaft engages teeth formed on the inner peripheral surface of the ring gear. Thus, the cam shaft rotates relative to the pulley. <IMAGE></p> |
申请公布号 |
EP0942153(A2) |
申请公布日期 |
1999.09.15 |
申请号 |
EP19990111270 |
申请日期 |
1997.11.14 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
MORIYA, YOSHIHITO;SUGIMOTO, KIYOSHI;HASEGAWA, TADAO |
分类号 |
F01L1/344;F01L1/46;F01L13/00;(IPC1-7):F01L1/344 |
主分类号 |
F01L1/344 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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