Eight-cylinder engine

Internal-combustion engines – Charge forming device – Fuel injection system

Reexamination Certificate

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Details

C123S054700

Reexamination Certificate

active

10577937

ABSTRACT:
An eight-cylinder engine including fuel injection valves provided for each of the eight cylinders. A first valve drive unit for driving four of the eight fuel injection valves to open and close by energizing the four fuel injection valves and a second valve drive unit for driving the other four fuel injection valves to open and close by energizing the second-mentioned four fuel injection valves. Both of the valve drive units drive the fuel injection valves so that combustion and expansion strokes occur at equal intervals, thus allowing for a sufficient charging time for each valve drive unit. For example, the first valve drive unit energizes those fuel injection valves which are provided on a first, fourth, sixth and seventh cylinders, and the second valve drive unit energizes those fuel injection valves which are provided on a second, third, fifth, and eighth cylinders.

REFERENCES:
patent: 4116172 (1978-09-01), Löhr et al.
patent: 5485820 (1996-01-01), Iwaszkiewicz
patent: 5515829 (1996-05-01), Wear et al.
patent: 5560825 (1996-10-01), Shafer
patent: 5692375 (1997-12-01), Novak et al.
patent: 5738071 (1998-04-01), Smith et al.
patent: 5934258 (1999-08-01), Watanabe
patent: 5960627 (1999-10-01), Krampe et al.
patent: 2004/0030488 (2004-02-01), Moessinger et al.
patent: A-2001-295685 (2001-10-01), None
patent: A-2003-056386 (2003-02-01), None

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