Valve timing for internal-combustion engines

Details Valve timing for internal-combustion engines Valve timing for internal-combustion engines

1997-06-18

1999-08-03

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

F01L 1300

Patent

active

059311240

ABSTRACT:
The invention relates to a valve timing for an internal-combustion engine with a variable control of the outlet valve. For reducing the HC-emissions, it is suggested according to the invention to adjust the closing of the outlet valve toward "early". This adjustment must be carried out to such an extent that the outlet valve will be closed before the piston has reached the upper dead center.

REFERENCES:
patent: 3714932 (1973-02-01), Meacham et al.
patent: 5233831 (1993-08-01), Hitomi et al.
patent: 5309872 (1994-05-01), Filippi et al.
patent: 5323739 (1994-06-01), Mollers
patent: 5367990 (1994-11-01), Schechter
patent: 5497737 (1996-03-01), Nakamura
patent: 5622144 (1997-04-01), Nakamura et al.
VDI Berichte NR. 1099, 1993, entitled "Measures for reducing consumption and exhaust emissions on the basis of 4-valve technology", pp. 41-57.

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