Combined fuel injection valve/ignition plug

US6871630B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Werner Herden · Gerlingen, DE
• Dieter Volz · Heilbronn, DE
• Gernot Wuerfel · Lambach, DE
• Anja Melsheimer · Stuttgart, DE
• Simon Schmittinger · Renningen, DE
• Rainer Norgauer · Stuttgart, DE
• Rene Deponte · Sersheim, DE

Key dates

• Filing date: Sep 20, 2002
• Grant date: Mar 29, 2005
• Expiry date: Sep 20, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/858
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injector-spark plug combination comprises a fuel injector for the direct injection of fuel into a combustion chamber of an internal combustion engine and a spark plug with a spark-plug insulator, a first electrode and a second electrode for igniting the fuel injected into the combustion chamber. The fuel injector includes an actuator cooperating with an actuation device, which is in force-locking, operative connection to a valve needle, the valve needle, or a valve-closure member connected thereto, cooperating with a valve-seat surface to form a sealing seat. The valve needle of the fuel injector and the spark-plug insulator of the spark plug are positioned in a shared housing at a biaxial offset.