Invention Grant
- Patent Title: Piezo common rail injector with hydraulic clearance compensation integrated into the servo valve
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Application No.: US15516518Application Date: 2015-10-13
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Publication No.: US10233885B2Publication Date: 2019-03-19
- 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: DE102014220883 20141015
- International Application: PCT/EP2015/073710 WO 20151013
- International Announcement: WO2016/059069 WO 20160421
- Main IPC: F02M61/16
- IPC: F02M61/16 ; F02M63/00 ; F02M47/02

Abstract:
The present disclosure relates to internal combustion engines. The teachings thereof may be embodied in injection valves with servo-valve control for injecting fuel into the combustion chamber. For example, an injection valve may include a valve pin connected to a valve body and an actuator preloaded by an actuator spring. The valve pin is fitted with a very small clearance to form a sealing gap between the valve pin and the valve body which includes bores. The lower end of the valve pin forms a coupling volume between the valve pin and the valve body, connected via the sealing gap and the bores to the valve chamber. The sealing gap provides a fluidic connection between the coupling volume and the valve chamber, but, during the short time of valve actuation, practically no exchange of fluid can take place between coupling volume and valve chamber so that the coupling volume does not substantially change in said short time.
Public/Granted literature
- US20170260950A1 Piezo Common Rail Injector With Hydraulic Clearance Compensation Integrated Into The Servo Valve Public/Granted day:2017-09-14
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