Patent · US Active

Gas injector having a dual valve needle

US9702325B2 · kind B2 · utility

0Cited by

4References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Felix Jaegle · Ditzingen, DE
Olaf Ohlhafer · Erligheim, DE
Joerg Schoefer · Gerlingen, DE
Robert Giezendanner-Thoben · Gerlingen, DE

Key dates

Filing date	Mar 16, 2015
Grant date	Jul 11, 2017
Priority date	—
Expiry date	Jul 21, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A gas injector for injecting gaseous fuel includes: a valve body; an outer needle which is a hollow needle; an inner needle disposed in a hollow region of the outer needle; and an actuator system configured to actuate the outer needle and the inner needle independently of each other in each case. A first sealing seat is provided between the valve body and the outer needle, and a second sealing seat is provided between the outer needle and the inner needle.

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