Current regulator for an electromagnetic consumer for use with internal combustion engine control

US4491113A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hermann Gassler · Lambach, DE
• Eugen Joos · Freiberg, DE
• Werner Jundt · Ludwigsburg, DE
• Hans Kubach · Ditzingen, DE
• Erich Singer

Key dates

• Filing date: Sep 8, 1982
• Grant date: Jan 1, 1985
• Expiry date: Sep 8, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2041/2058
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A current regulator is proposed for use in an electronically controlled, continuously operating gasoline injection system, with the aid of which a control element can be supplied with different current values depending upon the operating states of the engine. In addition to a current regulating phase during active operation, it is possible with the proposed current regulator to reverse the direction of current flow in the control element for the sake of blocking the supply of fuel during overrunning. Towards this end a circuit apparatus links signals relating to rpm, throttle valve position and temperature. Furthermore two safety circuit arrangements are proposed for the current regulator, so that in case of a failure of important components there is no impairment of safety, and emergency operation is assured.