Patent · US Expired

Fuel injection nozzle for internal combustion engines

US4548356A · kind A · utility

7Cited by

9References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karl Hofmann · Neckarrems, DE
Erich Jager · Bad Marienberg, DE

Key dates

Filing date	Aug 12, 1983
Grant date	Oct 22, 1985
Priority date	—
Expiry date	Aug 12, 2003

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M59/462
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection nozzle for internal combustion engines having a filter body inserted into the fuel inflow conduit, an injection valve and a check valve, which maintains a static pressure in the injection nozzle and can also perform a relief function for the prevention of after-injections. The check valve is integrated into the filter body thereby simplifying the final assembly of the injection nozzle. The filter body is advantageously embodied as a rod-type filter, which by the appropriate shaping of its jacket periphery forms gap-like spaces between itself and the surrounding wall of the nozzle holder through which spaces the fuel must pass such that it is deflected multiple times.

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