Patent ID: 6223699
Filing Date: 2001-05-01
Classification: F02M

Abstract:
Fuel injector for an internal combustion engine for fuel/emulsion operation, comprising:an injection nozzle formed by a nozzle needle,a nozzle needle cone for injecting fuel or a fuel emulsion into a combustion chamber of the internal combustion engine in response to an actuation of the nozzle needle,said nozzle needle defining a fuel volume formed by a nozzle chamber surrounding said nozzle needle cone and a mixing chamber connected with said nozzle chamber,a first fuel supply channel terminating in said mixing chamber for supplying fuel under high pressure, supplied by a high-pressure line, into said fuel volume,a second fuel supply channel likewise terminating in said mixing chamber for parallel supply, under high pressure, of an added fluid, forming an emulsion with the fuel, into said fuel volume,an added fluid supply channel that serves during injection pauses to supply added fluid to the second fuel supply channel, anda multichannel distributor for controlling at least the quantity of fluid fed to said first fuel supply channel,wherein said second fuel supply channel can be connected by said multichannel distributor for filling with fuel with said high-pressure line supplying the fuel, andwherein said added fluid supply channel serving to supply added fluid to said second fuel supply channel terminates downstream of said multichannel distributor in said second fuel supply channel in such fashion that a quantity of the added fluid delivered during an injection pause from said added fluid supply channel into said second fuel supply channel, during a subsequent injection phase of the fuel provided through said multichannel distributor under high pressure, is injected completely into the combustion chamber of the internal combustion engine.