Patent · US Active

Fuel injector and method for forming spray-discharge openings

US9803606B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Andreas Schrade · Immenstadt im Allgäu, DE
Dieter Maier · Rettenberg, DE
Gerhard Stransky · Immenstadt im Allgäu, DE

Key dates

Filing date	Oct 17, 2014
Grant date	Oct 31, 2017
Priority date	—
Expiry date	Feb 19, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M61/1806
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injector for fuel injection systems of internal combustion engines has an excitable actuator for activating a valve closing element, which forms a sealing seat together with a valve face implemented on a valve seat element. Multiple spray-discharge openings are implemented in the valve seat element downstream from the valve face. The fuel injector is distinguished in that the spray-discharge openings include at least one upstream first spray-discharge opening section and one downstream second spray-discharge opening section having a different opening width and a wall area of the second spray-discharge opening section of all spray-discharge openings on a semi-circle runs either parallel or at a right angle to the longitudinal axis of the valve seat element having the spray-discharge openings. The valve seat element is manufactured using metal injection molding methods.

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