Invention Grant
- Patent Title: Dampening stop pin
- Patent Title (中): 阻尼止动销
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Application No.: US11453133Application Date: 2006-06-15
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Publication No.: US07900604B2Publication Date: 2011-03-08
- Inventor: Olaf Enke
- Applicant: Olaf Enke
- Applicant Address: US SC Blythewood
- Assignee: Siemens Diesel Systems Technology
- Current Assignee: Siemens Diesel Systems Technology
- Current Assignee Address: US SC Blythewood
- Agency: McGuirewoods LLP
- Main IPC: F02M59/46
- IPC: F02M59/46

Abstract:
A dampening stop pin that reduces a needle velocity at the time when the needle valve of a fuel injector is about to be seated in a closed position. A gap between a bottom surface of the stop-pin flange and a sealing seat of a nozzle is provided to compress the fuel trapped therein to form a fuel cushion that dampens the closing motion of the needle. Moreover, a diametrical clearance between an outer circumferential edge of the flange and an inner surface of a needle spring cage must be sized to prevent undesired high pressure from building up in the gap by venting a quantity of compressed fuel while still permitting the fuel cushion to dampen the closing force of the needle.
Public/Granted literature
- US20060283984A1 Dampening stop pin Public/Granted day:2006-12-21
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