Patent ID: 9664160
Date: 2017-05-30
CPC Classifications: F02M

Claim:
1. A vehicular high pressure direct injection type injector with valve seat body for fuel-atomization, the injector comprising: a cylindrical housing having a needle valve therein; a magnetic coil arranged for reciprocating the needle valve; a current supply line arranged for supplying current to the magnetic coil; a return spring disposed at an upper end of the needle valve, the return spring arranged for applying a restoring force to the needle valve; a valve seat body disposed at a lower end of the cylindrical housing; and a ball disposed between the valve seat body and the needle valve, wherein the valve seat body includes: wherein a horizontal cross-section of the nozzle hole is shaped as an ellipse having a minor axis to a major axis ratio in a range of greater than 1:1 up to 1:3.5, and wherein the nozzle hole has a reverse truncated conical shape with a side surface that is tapered in the direction in which fuel is injected, such that the horizontal cross-sectional area of the nozzle hole decreases in the direction in which fuel is injected.