Sperrdrehzahlbereiche

English translation: blocking r.p.m. ranges

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
German term or phrase:Sperrdrehzahlbereiche
English translation:blocking r.p.m. ranges
Entered by: David Williams

07:31 Mar 2, 2016
German to English translations [PRO]
Tech/Engineering - Automotive / Cars & Trucks / Truck/machine/ship diesel engines
German term or phrase: Sperrdrehzahlbereiche
Context:

"Notbetrieb
Betrieb mit Zündaussetzern bzw. einer der Zylinder zündet überhaupt nicht.
Sperrdrehzahlbereiche beachten!"

This is about a large diesel engine/marine propulsion system. As far as I can ascertain, Sperrdrehzahl seems to be translated as "reverse speed", but I'm not too confident about that.

* Sentence or paragraph where the term occurs: See above
* Document type: Requirement specifications
* Target audience: System manufacturers
* Country and dialect (source): German
* Country and dialect (target): British English
David Williams
Germany
Local time: 18:06
blocking r.p.m. ranges
Explanation:
I have no experience in this area, I'm afraid, but I found "blocking r.p.m." here on pg 129 (look for "Sperr-Drehzahl"):

https://www.fischerpanda.de/images/gensets/docs/FPO1-0003747...
Selected response from:

Susan Madden
Ireland
Local time: 17:06
Grading comment
Thank you, Susan!
4 KudoZ points were awarded for this answer



Summary of answers provided
2barrier speed (ranges)
Darin Fitzpatrick
1blocking r.p.m. ranges
Susan Madden


  

Answers


1 hr   confidence: Answerer confidence 1/5Answerer confidence 1/5
blocking r.p.m. ranges


Explanation:
I have no experience in this area, I'm afraid, but I found "blocking r.p.m." here on pg 129 (look for "Sperr-Drehzahl"):

https://www.fischerpanda.de/images/gensets/docs/FPO1-0003747...

Susan Madden
Ireland
Local time: 17:06
Native speaker of: Native in EnglishEnglish
PRO pts in category: 8
Grading comment
Thank you, Susan!
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1 hr   confidence: Answerer confidence 2/5Answerer confidence 2/5
barrier speed (ranges)


Explanation:
My conclusion up front: this is such a rare term, based on both a Google search and a brief survey of my colleagues (engineers in the field of rotating machinery), that it would be worthwhile to ask the client exactly what is meant. Also the German instructions are typically terse and unclear: what exactly is meant by "beachten"? Stay in the range, stay out of the range, watch the range closely and use your professional judgment? Therefore a clarifying query would be entirely in order.

All that said, here's some examples:

I have one source for you that sounds like a similar application. This patent (DE 102010027698 A1) defines the "Sperrdrehzahl" as follows:
"Die Sperrdrehzahl NLK ist eine Motordrehzahl, die eine Wiederaufnahme von einem Kraftstoffversorgungs-Stoppzustand und einen Übergang zu einem Freilaufbetrieb ermöglicht, und leicht höher eingestellt wird als eine Freilaufdrehzahl."
In English:
"The barrier speed N LK is an engine speed that allows recovery from a fueling stop state and a transition to a free-running mode, and is set slightly higher than a free-running speed."

Another patent (EP 2713051 B1) has a different sense of what the term means. Here it is the speed at which a prime mover (in this case a turbine, not a diesel engine) rotates when its load has been removed (in this case a compressor). This does not seem to be the same usage as the previous patent.


    Reference: http://www.google.com.na/patents/DE102010027698A1?cl=en&hl=d...
    Reference: http://www.google.com/patents/EP2713051B1?cl=de
Darin Fitzpatrick
United States
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 162
Notes to answerer
Asker: Thank you, that's very helpful!

Asker: The client's response wasn't terribly helpful: "Ganz einfach beachten (zur Kenntnis nehmen und entsprechend handeln)"

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