John Cory Curtis

US Patent:

6739308, May 25, 2004

Filed:

May 24, 2002

Appl. No.:

10/155473

Inventors:

John M. Curtis - Seattle WA

Assignee:

Hatch Kirk, Inc. - Seattle WA

International Classification:

F02B 1908

US Classification:

123262, 123276, 123306, 123315, 123 73 C

Abstract:

The present invention provides a piston for a diesel engine that reduces emissions generated during the combustion of fuel in a combustion chamber and a head that allows more air to flow into and out of the combustion chamber. The piston includes an igniter that ignites fuel injected into the combustion chamber and a piston bowl. The piston bowl agitates air in the combustion chamber to quickly mix the fuel and air before the igniter ignites the fuel and to reduce carbon build-up from unburned fuel in the combustion chamber. By igniting the fuel shortly after it is injected into the combustion chamber, the igniter reduces the time between injection and combustion of the fuel in the combustion chamber. Thus, the amount of NOx produced during combustion is reduced. Furthermore, injection of the fuel can commence when the piston is closer to top dead center and thus more power can be generated.