Upper structure of engine

Details Upper structure of engine Upper structure of engine

2011-08-16

2011-08-16

Moulis, Thomas N (Department: 3747)

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

Specific spark plug location

C123S310000, C123S634000, C123S635000, C123S638000, C123S647000

Reexamination Certificate

active

07997250

ABSTRACT:
Disclosed is an upper structure of an engine having three or more cylinders arranged in a row. A first one of a pair of adjacent cylinders among at least three of the cylinders serially arranged in a cylinder row direction is provided with a second spark plug at a position on an opposite side of a second one of the pair of adjacent cylinders, and the second one of the pair of adjacent cylinders is provided with a second spark plug at a position on an opposite side of the first one of the pair of adjacent cylinders. The present invention can provide enhanced flexibility in design of a head cover of the engine.

REFERENCES:
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patent: 6536406 (2003-03-01), Matsubara et al.
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patent: 2009/0107457 (2009-04-01), Meyer et al.
patent: 2009/0229569 (2009-09-01), Glugla et al.
patent: S60-43178 (1985-03-01), None
Japanese Office Action “Notice of Reasons for Rejection” dated May 10, 2011; Japanese Patent Application No. 2008-260664 with translation.

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