Electromagnetic fuel injection valve
AssigneeRobert Bosch GmbH
InventorsGerhard Brune, Waldemar Hans
Life of this patent
Estimating the term…
Abstract
An electromagnetic fuel injection valve in which a valve needle coupled to the armature has twisting channels for carrying fuel and for creating turbulence therein. The channels terminate in a pressure chamber whose volume is chosen to be equal to or smaller than the volume of fuel injected in a single stroke.
Claims4
In an electromagnetic fuel injection valve which includes a casing, a magnetic coil, a stationary iron core within said coil and a movable armature moving axially with said core within said casing and provided with a valve closing needle guided by portions of said casing for cooperation with an injection orifice obturated by said valve needle, the improvement comprising:
- said valve needle is provided with a plurality of curved channels for carrying fuel and for imparting turbulence thereto;
- and
- said casing and said valve needle together define a pressure chamber whose maximum volume is no greater than the volume of fuel from said valve during a single stroke.
Dependencies are inferred from the claim text.