Piston for a cylinder injection engine

Details Piston for a cylinder injection engine Piston for a cylinder injection engine

1998-04-13

2000-10-10

McMahon, Marguerite

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

123302, H02B 2300

Patent

active

061290653

ABSTRACT:
In a cylinder injection engine which includes an injection valve disposed in the vicinity of an intake port of the engine and adapted to inject fuel into the combustion chamber, a spark plug disposed closer to the center portion of the combustion chamber than the injection valve, and a piston having a cavity formed in the top face that substantially faces the injection valve and the spark plug, the cavity is formed by smoothly connecting a curved surface located below the spark plug and a curved surface located below the injection valve via a connection curved surface. The curvature .kappa..sub.1 of the curved surface located under the injection valve and the curvature .kappa..sub.2 of the curved surface located under the spark plug satisfy a relationship .kappa..sub.1 <.kappa..sub.2.

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Patent Abstracts of Japan--Abstract for JP 5-240051 A, published Sep. 17, 1993, Shizuo Sasaki.

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