Patent ID: 9046067
Filing Date: 2015-06-02
Classification: F02M

Abstract:
1. A fuel injector comprising: an injector body defining a first fuel inlet, a second fuel inlet, a first nozzle outlet set, and a second nozzle outlet set, the injector body further defining therein a first control chamber and a second control chamber; a first direct operated check that includes a first check valve member with a closing hydraulic surface exposed to a fluid pressure in the first control chamber, and being movable between a closed position in contact with a first seat to block the first nozzle outlet set from the first fuel inlet, and an open position out of contact with the first seat to fluidly connect the first fuel inlet to the first nozzle outlet set, and further including a first spring operably positioned to bias the first check valve member toward the closed position; and a second direct operated check that includes a second check valve member with a closing hydraulic surface exposed to a fluid pressure in the second control chamber, and being movable between a closed position in contact with a second seat to block the second nozzle outlet set from the second fuel inlet, and an open position out of contact with the second seat to fluidly connect the second fuel inlet to the second nozzle outlet set, and further including a second spring operably positioned to bias the second check valve member toward the closed position; the first spring and the second spring being located entirely on opposite sides of a plane oriented perpendicular to a long axis of the injector body; and a centerline of the first check valve member being separated from a centerline of the second check valve member by a distance, the distance being greater than zero.