Emergency control device for a diesel internal combustion engine with electronically controlled fuel proportioning

US4793308A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jurgen Brauninger · Stuttgart, DE
• Wolfgang Duhlmeyer · Schwieberdingen, DE
• Gunter Kettenacker · Steinheim an der Murr, DE
• Volker Schafer · Obermoschel, DE
• Albrecht Sieber · Möhrendorf, DE
• Jurgen Wietelmann · Ditzingen, DE

Key dates

• Filing date: Oct 6, 1987
• Grant date: Dec 27, 1988
• Expiry date: Oct 6, 2007

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/227
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An emergency control device for a diesel internal combustion engine with electronically controlled fuel proportioning, which enables an optimal emergency driving operation in case of a defect of the transmitter or transmitters for the actual value of fuel volume. In the event of an error, the mechanism determining the desired value of fuel volume during normal operation, and the fuel volume regulating device, are separated from the fuel proportioning device and the latter is controlled by a special emergency driving signal. An error in the transmitters for the actual value of fuel volume is recognized in that this signal does not fall in the allowable area for the actual value of fuel volume. A first signal, which, together with a second signal, gives the emergency driving signal, is formed from the speed and the accelerator position. The second signal consists substantially of the differentiated speed signal.