Injection timing device for internal combustion engines

US4332227A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Otto Bauer · Munich, DE
• Leonhard Eberl · Unterschleißheim, DE
• Gerhard Geyer · Munich, DE
• Max Straubel · Stuttgart, DE

Key dates

• Filing date: Apr 27, 1981
• Grant date: Jun 1, 1982
• Expiry date: Apr 27, 2001

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D1/183
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An injection timing device is proposed for internal combustion engines, by means of which the mutual rotary position of the output shaft with respect to the input shaft can be varied in dependence on the speed and on at least one further operating parameter. The timing device comprises flyweights, operating in dependence on the speed against the force of resetting springs, and hydraulically operated control elements which engage the flyweights, these control elements, which are effective radially toward the outside, being accommodated within the timing element. By changing the position of the control elements, the radial position of the flyweights, which otherwise is determined only by centrifugal force, can be additionally varied in dependence on at least one further operating parameter of the engine, preferably the load, in order to correct the instant of injection.