Fuel injection system

US4341192A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinrich Knapp · Leonberg, DE
• Wolfgang Maisch · Schwieberdingen, DE
• Klaus-Jurgen Peters · Marbach am Neckar, DE
• Michael Wissmann · Markgröningen, DE
• Gunther Jaggle
• Peter Schelhas · Stuttgart, DE

Key dates

• Filing date: Mar 11, 1980
• Grant date: Jul 27, 1982
• Expiry date: Mar 11, 2000

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M69/44
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A fuel injection system is proposed which brings about an improvement in the acceleration behavior of an internal combustion engine. The fuel injection system includes metering valves actuatable by means of an air flow measuring device, at which valves a pressure difference can be held constant via control valves and the pressure difference is variable in accordance with operational characteristics of the engine. To this end, the control valves are located on a control pressure line in which a control throttle and an electromagnetic valve are disposed. At the same time, pressure limitation elements communicate with the control pressure line and, in the event of acceleration of the engine, reduce the extent of increase of control pressure and thus assure fuel metering corresponding with the operational state of the engine.