Starting device for internal combustion engines

US5095864A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Bolenz · Schwieberdingen, DE
• Hans Wuerth · Ludwigsburg, DE

Key dates

• Filing date: Nov 28, 1990
• Grant date: Mar 17, 1992
• Expiry date: Nov 28, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02N11/006
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a starter device having two starters (11, 12) operating in parallel mode, for the purpose of ensuring that the switching on of the drive motors (17, 18) for the drive of the starting pinions occurs only after engagement of the latter, the relay windings (21, 22) of the starting relays (19, 20) which push the starting pinions forwards, are connected in parallel to one another and in such a way that they are excited simultaneously when the starter switch (16) is activated. After complete engagement of the starting pinions, in each starter (11, 12), switching contacts (27-30) are activated, of which two switching contacts (27, 30 or 28, 29) associated, in each case, with two different starters (11, 12), are series-connected and connected in series to, in each case, one drive motor (17 or 18). Thus, if necessary, the switching on of the drive motors (17, 18) is blocked as long as one of the two starting pinions is not engaged.