Multi-cylinder internal combustion engine

Details Multi-cylinder internal combustion engine Multi-cylinder internal combustion engine

2007-04-17

2007-04-17

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170, C123S090310, C123S090600

Reexamination Certificate

active

11236632

ABSTRACT:
#7 cylinder shares an exhaust manifold with #1 cylinder and is fired a predetermined firing interval after #1 cylinder. An exhaust cam shaft has a first cam for driving the exhaust cams of #1 cylinder and a second cam for driving the exhaust cams of #7 cylinder. A valve overlap period of #1 cylinder during its shift from an exhaust stroke to an intake stroke overlaps a time period during which the exhaust valves of the second cylinder are open in #7 cylinder while it is shifting from a power stroke to an exhaust stroke. The nose of the second cam is located farther in a retard direction than a position that is away in the retard direction from the nose of the first cam by an angle corresponding to the predetermined firing interval between the first and second cylinders.

REFERENCES:
patent: 5522352 (1996-06-01), Adachi et al.
patent: 6397802 (2002-06-01), Rutschmann et al.
patent: 6928980 (2005-08-01), Yamakawa et al.
patent: 10-184404 (1998-07-01), None
patent: 2003-515025 (2003-04-01), None
patent: WO 01/36793 (2001-05-01), None

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