Spark ignition engine with shallow bowl-in-piston geometry

Details Spark ignition engine with shallow bowl-in-piston geometry Spark ignition engine with shallow bowl-in-piston geometry

2005-06-28

2005-06-28

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

Reexamination Certificate

active

06910455

ABSTRACT:
A piston for use with a direct injection, spark ignition engine includes a piston body with a top face having a piston deck and a shallow bowl. Furthermore, the shallow bowl has a maximum depth that is in the range of one to five millimeters below the piston deck.

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“Effects of Squish Area Shape on Knocking in a Four-Valve Spark Ignition Engine”, Takanori Ueda et al, SAE Paper No. 1999-01-1494, 1999, pp. 1-6.

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