Gong Chen

US Patent:

6349706, Feb 26, 2002

Filed:

Oct 25, 1999

Appl. No.:

09/426249

Inventors:

Bertrand Dahung Hsu - San Jose CA
Gong Chen - Erie PA
Robert Douglas Cryer - Erie PA

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02M 3704

US Classification:

123500, 123496

Abstract:

A fuel injection system for a diesel engine operating at retarded fuel injection timing includes a fuel cam configured to increase a fuel injection pressure and decrease a fuel injection duration, thereby improving fuel atomization and combustion in a plurality of engine cylinders and improving an indicated efficiency of the engine and reducing exhaust emissions. The fuel cam is oriented in a phase relationship with a compression stroke top-dead-center position to accommodate the retarded fuel injection timing and to optimize an engine brake efficiency and performance.

US Patent:

63183080, Nov 20, 2001

Filed:

Oct 4, 1999

Appl. No.:

9/412627

Inventors:

Bertrand Dahung Hsu - San Jose CA
Gong Chen - Erie PA

Assignee:

General Electric Company - Schenectady NY

International Classification:

F02F 700

US Classification:

123 48A

Abstract:

A diesel engine adapted for operation under retarded fuel ignition timing relative to conventional fuel injection timing includes a piston shaped to increase the compression ratio of an engine cylinder, and specially designed combustion air intake and exhaust gas ports that increase scavenging flow of exhaust gases and allow for manipulation of air intake and exhaust gas valves with a cam shaft. Thus, an engine may be operated under retarded fuel injection timing to decrease emissions of nitrogen oxides without sacrificing engine performance and efficiency.