Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent
1990-03-27
1991-07-16
Okonsky, David A.
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
123316, F02D 1302, F02B 2520, F02B 2900, F01L 140
Patent
active
050315820
ABSTRACT:
In the embodiment described in the specification a combustion chamber for an internal combustion engine has intake and exhaust valves arranged to scavenge the combustion chamber with fresh gas. The valve control for the intake valve is arranged so that the intake valve closing time is delayed with decreasing load and, to avoid a corresponding reduction of the compression ratio, the combustion chamber has a variable volume annex which reduces the combustion chamber volume with decreasing load.
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Lo Weilun
Okonsky David A.
Volkswagen AG
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