GASEOUS AND LIQUID FUEL INJECTOR

摘要

A dual fuel injector comprising: (a) an injector body; (b) an inlet port (7, 8) in the in-jector body for enabling pressurized hydraulic fluid from a hydraulic fluid source to be in-troduced into the interior of the injector body, said hydraulic fluid being of sufficient pres-sure to maintain injection valves (16, 17) in the injector body in a closed position until actuated; (c) a first inlet port (6) in the in-jector body for enabling a first fuel to be in-troduced; (d) a first injection valve (16) in the injection body connected to the first in-let port (6); (e) a second inlet port (23) in the injector body for enabling a second fuel to be introduced; (f) a second injection valve (17) in the injector body connected to the sec-ond inlet port (23) for controlling injection of the second fuel; (g) a first control valve (3) which causes the hydraulic fluid to actuate the first injection valve; (h) a second control valve (2) which causes the hydraulic fluid to actuate the second injection valve (17); (i) a metering device (15) in the injector body for metering the amount of first fuel injected by the first injection valve; and (j) a seal (24) in the injector body which prevents leakage of the second fuel into the first fuel.