Patent · US Expired

Electromagnetic fuel injection valve for internal combustion engines

US4274598A · kind A · utility

24Cited by

3References

1Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thomas Wilfert · Ludwigsburg, DE
Rudolf Babitzka · Kirchberg, DE
Walter Schlagmuller · Schwieberdingen, DE

Key dates

Filing date	Feb 15, 1979
Grant date	Jun 23, 1981
Priority date	—
Expiry date	Feb 15, 1999

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/162
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An injection valve which serves to inject fuel into the intake manifold of a vehicle engine. The valve has a spin chamber upstream of the injection port which can be connected with a return line to the supply pump providing the pressure, for the purpose of continuous maintenance of a spinning motion of the fuel. The closing body of the valve has a projection extending into the injection port and beyond the valve seat which prevents drip formation when the valve opens.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.