Patent ID: 7703707

Claim:
A fuel injector, which comprises: a fuel injection portion comprising: a drive mechanism inserted into a casing for driving a valve body to move the valve body backward and forward, a nozzle body having a nozzle hole, a valve surrounding portion for surrounding the valve body, a guide portion having a plurality of sliding guides each extending in a radial direction from the valve body, which has a fuel hole, an orifice plate having an orifice, the valve body being slidably inserted into the casing for closing and opening a fuel path formed between the valve surrounding portion and the valve body and formed through the sliding guides by letting a valve tip of the valve body contact with and separate from the nozzle body; and the casing covering the fuel injection portion, wherein the sliding guides connected to the valve body at a lower point of the fuel path, being slidably inserted into the casing, and wherein the sliding guides form a biased flow velocity distribution after the sliding guides, the biased flow velocity distribution having a maximum value biased towards a valve surrounding portion side.