Claims:1. A fuel injection system (10), said fuel injection system (10) comprising:
10 an engine (12);
an exhaust gas supply path (14) in flow communication with said engine (12),
said exhaust gas supply path (14) adapted to channel exhaust gases from said
engine (12) to an outlet (16) of said exhaust gas supply path (14);
a diesel oxidation catalyst (18) in flow communication with said exhaust gas
15 supply path (14), said diesel oxidation catalyst (18) adapted to oxidize the
exhaust gas flowing through said exhaust gas supply path (14);
a diesel particulate filter (20) in flow communication with said diesel oxidation
catalyst (18), said diesel particulate filter (20) adapted to filter particulate
matter from the exhaust gas before the exhaust gas is channeled to the outlet
20 (16) of said exhaust gas supply path (14);
a pressure sensor (22) in flow communication with said exhaust gas supply
path (14), said pressure sensor (22) adapted to measure a pressure of exhaust
gas flowing through said exhaust gas supply path (14) to said diesel oxidation
catalyst (18); characterized in that
25 a fuel injector (24) in flow communication with said exhaust gas supply path
(14), said fuel injector (24) adapted to inject pressurized fuel into the exhaust
gas supply path (14) to facilitate increasing a temperature of exhaust gas
flowing through the exhaust gas supply path (14) to said diesel oxidation
catalyst (18).
2.The fuel injection system (10) in accordance with Claim 1 wherein a flow
control valve (26) is in flow communication between a fuel tank (28) and said
fuel injector (24), said flow control valve (26) adapted to 5 control a flow of
pressurized fuel from said fuel tank (28) to said fuel injector (24).
3.The fuel injection system (10) in accordance with Claim 2 wherein said flow
control valve (26) is in flow communication between said pressure sensor (22)
10 and said fuel injector (24), said flow control valve (26) adapted to channel a
controlled flow of pressurized fuel from said fuel tank (28) to said fuel injector
(24) when a pressure of exhaust gas flowing through said exhaust gas supply
path (14) to said diesel oxidation catalyst (18) as sensed by said pressure sensor
(22) exceeds a predetermined threshold pressure. , Description:A fuel injection system 10 is described. The fuel injection system 10 comprises an
engine 12, and an exhaust gas supply path 14 in flow communication with the engine
12. A diesel oxidation catalyst 18 is in flow communication with the exhaust gas
10 supply path 14. A diesel particulate filter 20 is in flow communication with the diesel
oxidation catalyst 18. A pressure sensor 22 is in flow communication with the exhaust
gas supply path 14 to measure a pressure of exhaust gas flowing there through. A fuel
injector 24 is in flow communication with the exhaust gas supply path 14, the fuel
injector 24 adapted to inject pressurized fuel into the exhaust gas supply path 14 to
15 facilitate increasing a temperature of exhaust gas flowing through the exhaust gas
supply path 14 to the diesel oxidation catalyst 18.