Fuel injection valve and fuel injection device with same
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTatsuo Kobayashi
Life of this patent
Estimating the term…
Abstract
A fuel injection valve includes: a needle valve including a seat portion in a front end side; a nozzle body including a seat surface on which the seat portion sits, and including an injection hole at a downstream side with respect to the seat surface; and an injection-hole extending member including: a pressure receiving portion that receives pressure in a combustion chamber of an engine; and a movable portion that moves in the injection hole in an axial direction of the injection hole in response to the pressure received by the pressure receiving portion, and that changes length of the injection hole.
Claims7
A fuel injection valve comprising:
- a needle valve including a seat portion in a front end side;
- a nozzle body including a seat surface on which the seat portion sits, and including an injection hole at a downstream side with respect to the seat surface;
- and
- an injection-hole extending member including:
- a pressure receiving portion that receives pressure in a combustion chamber of an engine;
- and
- a movable portion that moves in the injection hole in an axial direction of the injection hole in response to the pressure received by the pressure receiving portion, and that changes length of the injection hole.
A fuel injection device comprising:
- a fuel injection valve including:
- a needle valve including a seat portion in a front end side;
- a nozzle body including a seat surface on which the seat portion sits, and including an injection hole at a downstream side with respect to the seat surface;
- and
- an injection-hole extending member including:
- a pressure receiving portion that receives pressure in a combustion chamber of an engine;
- and
- a movable portion that moves in the injection hole in an axial direction of the injection hole in response to the pressure received by the pressure receiving portion, and that changes length of the injection hole, and
- a controller controls a timing of injecting fuel from the fuel injection valve,
- wherein the controller controls the fuel injection valve to perform compression stroke injection, when the compression stroke injection is not performed at a predetermined time for a predetermined period on a basis of a fuel injection history.
Dependencies are inferred from the claim text.