Internal-combustion engines – Precombustion and main combustion chambers in series – Having combustible mixture forming means
Reexamination Certificate
2006-04-18
2006-04-18
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Precombustion and main combustion chambers in series
Having combustible mixture forming means
C123S301000
Reexamination Certificate
active
07028662
ABSTRACT:
A direct fuel injection engine is provided that an appropriate stratified fuel-air mixture is formed to conduct good stratified combustion over a wide range of loads. The engine has a fuel injection valve that is arranged at an upper surface of the combustion chamber on or near the center reciprocation axis of the piston and oriented such that the injection center axis of the fuel stream injected therefrom is slanted with respect to the center reciprocation axis of the piston. The piston is disposed in the combustion chamber to move along a cylinder center axis. The piston has a top surface having a first outer cavity having a first cavity center axis, and a second inner cavity located in the outer cavity. The second inner cavity has a second cavity center axis offset from the cylinder center axis of the piston in a direction perpendicular to the cylinder center axis.
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Hiraya Koji
Hotta Isamu
Shiino Toshikazu
Shiraishi Taisuke
Tsuchida Hirofumi
Nissan Motor Co,. Ltd.
Shinjyu Global IP Counselors
Wolfe, Jr. Willis R.
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