Mixture formation system for mixture-compressing internal combustion engines with externally supplied ignition

US4416241A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Heinrich Knapp · Leonberg, DE
• Peter Romann · Stuttgart, DE
• Rudolf Sauer · Memmingen, DE

Key dates

• Filing date: Jul 27, 1981
• Grant date: Nov 22, 1983
• Expiry date: Jul 27, 2001

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/6983
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A mixture formation system is proposed for mixture-compressing internal combustion engines with externally supplied ignition. The mixture formation system includes an air intake fitting in which an electromagnetically actuatable injection valve is held concentrically, upstream of a throttle valve. Disposed upstream of the injection valve is an air flow rate meter provided with a temperature-dependent resistor. The electronic regulating device of the air flow rate meter and a pressure regulator for regulating the fuel pressure at the injection valve as well as a supplementary air valve for controlling an air bypass bypassing the throttle valve during the warm-up phase of the engine may be provided on the air intake fitting. As a result, a mixture formation system is attained which is simply constructed and functions reliably, and which because of its compact structure can be accommodated in the engine compartment of an internal combustion engine even where space is extremely limited.