- Patent Title: Piezo injector with hydraulically coupled nozzle needle movement
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Application No.: US14415332Application Date: 2013-07-04
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Publication No.: US10024285B2Publication Date: 2018-07-17
- Inventor: Willibald Schuerz
- Applicant: Continental Automotive GmbH
- Applicant Address: DE Hanover
- Assignee: CONTINENTAL AUTOMOTIVE GMBH
- Current Assignee: CONTINENTAL AUTOMOTIVE GMBH
- Current Assignee Address: DE Hanover
- Agency: Slayden Grubert Beard PLLC
- Priority: DE102012212614 20120718
- International Application: PCT/EP2013/064111 WO 20130704
- International Announcement: WO2014/012795 WO 20140123
- Main IPC: F02M51/00
- IPC: F02M51/00 ; F02M51/06 ; F02M63/00 ; F02M61/16

Abstract:
A piezo injector includes a piezo actuator arranged in an actuator chamber and a valve plunger arranged in a valve plunger bore and having a first end face facing the piezo actuator. The valve plunger is arranged between a first control chamber defined by a valve plunger bore portion delimited by the first end face and a spring chamber formed by a valve plunger bore portion opposite the first control chamber. A second control chamber is delimited by a second face of a nozzle needle and a sleeve guided by the nozzle needle. A leakage pin is arranged in a leakage pin bore between the piezo actuator and the first end face of the valve plunger. The leakage pin bore is formed in an intermediate plate arranged on a side of a control plate facing the piezo actuator, the valve plunger bore being formed in said control plate.
Public/Granted literature
- US20150184627A1 Piezo Injector With Hydraulically Coupled Nozzle Needle Movement Public/Granted day:2015-07-02
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