Valve timing control device

Details Valve timing control device Valve timing control device

1999-04-26

2000-04-25

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, F01L 1344, F01L 1300

Patent

active

060531398

ABSTRACT:
A valve timing control device incorporates a rotary shaft rotatably assembled within a cylinder head of an internal combustion engine, a rotational transmitting member mounted around the peripheral surface of the rotary shaft so as to rotate relative thereto within a predetermined range for transmitting a rotational power from a crank shaft, a vane provided on either one of the rotary shaft and the rotational transmitting member, a pressure chamber formed between the rotary shaft and the rotational transmitting member, and divided by the vane into an advance chamber and a delay chamber, a first fluid passage for supplying and discharging a fluid to and from the advance chamber, a second fluid passage for supplying and discharging a fluid to and from the delay chamber, a locking mechanism for holding the relationship between the rotary shaft and the rotational transmitting member at a middle position of the predetermined range, when the internal combustion engine starts, and a controlling mechanism for restricting the rotational transmitting member to rotate around the rotary shaft within a range between the middle position and an end position of the predetermined range.

REFERENCES:
patent: 5738056 (1998-04-01), Mikame et al.
patent: 5823152 (1998-10-01), Ushida
patent: 5845615 (1998-12-01), Nakamura et al.
patent: 5901674 (1999-05-01), Fujiwaki
patent: 5924395 (1999-07-01), Moriya et al.

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