Fuel injection valve

US5819707A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Uwe Grytz · Bamberg, DE
• Stefan Lauter · Herbstein, DE

Key dates

• Filing date: May 19, 1997
• Grant date: Oct 13, 1998
• Expiry date: May 19, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M69/047
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection valve comprising a front attachment in whose wall a blocking element is displaceably supported; on its slide segment toward an air chamber, the pressure in the inlet tube upstream of a throttle valve prevails, while in the opposite direction the intake tube pressure downstream of the throttle valve is operative. If there is a sufficient pressure difference, the blocking element is displaced to the left far enough that it blocks at least one injection port on the fuel injection valve and blocks one guide conduit in the front attachment. As a result, only the one open inlet valve of one cylinder of the engine is supplied with fuel, via the at least one open injection port and the open guide conduit. The fuel injection valve is especially suitable for fuel injection in mixture-compressing internal combustion engines with externally supplied ignition.