Glossary entry (derived from question below)
Japanese term or phrase:
エンジン回転数
English translation:
rotational speed / rpm (revolutions per minute)
- The asker opted for community grading. The question was closed on 2014-04-19 04:54:12 based on peer agreement (or, if there were too few peer comments, asker preference.)
Apr 16, 2014 01:02
10 yrs ago
1 viewer *
Japanese term
エンジン回転数
Japanese to English
Tech/Engineering
Automation & Robotics
I have found two phrases to mean "エンジン回転数": "rotational speed of engine" and "engine speed".
Do both mean the same?
Example: エンジン回転数制御装置はエンジン（の）回転数の急減を防止する。
The .... unit prevents the rotational speed of engine from rapid depletion. (?)
Thank you in advance
Do both mean the same?
Example: エンジン回転数制御装置はエンジン（の）回転数の急減を防止する。
The .... unit prevents the rotational speed of engine from rapid depletion. (?)
Thank you in advance
Proposed translations
(English)
| 3 +5 | rotational speed / rpm (revolutions per minute) |
David Gibney
|
| 4 | number of revolutions of the engine |
Teddy Okuyama (X)
|
| 4 | Engine revolution speed |
Milind Joshi
|
| 3 | engine RPM |
cinefil
|
Proposed translations
+5
7 mins
David Gibney
Ireland
Ireland
Native in English
Ireland
Professional, punctual translations
Native in: English 
Works in: Japanese to English, English to Japanese
Related KudoZ points
:
4
Selected
rotational speed / rpm (revolutions per minute)
I think in most contexts rpm would be the most natural way of putting it but in the context you provided "rotational speed of the engine" or "engine speed" would be fine. I would go with "engine speed" as the fact that the engine rotates should be obvious from context.
Peer comment(s):
| agree |
Port City
: Agreed to the explanation as well.
1 hr
|
|
Thank you!
|
|
| agree |
Ruth Clowes
: I agree with engine speed in the context provided.
7 hrs
|
|
Thank you!
|
|
| agree |
Chrisso (X)
: rpm
1 day 14 hrs
|
|
Thank you!
|
|
| agree |
jgraves
2 days 31 mins
|
|
Thank you!
|
|
| agree |
Takeshi MIYAHARA
2 days 8 hrs
|
4 KudoZ points awarded for this answer.
Comment: "Thank you!"
12 mins
16 mins
number of revolutions of the engine
I think it's best to take this in context. I think the sentence would sound smoother in the following way:
The engine speed control system prevents the rapid decrease of the number of revolutions of the engine.
You can use the term "engine speed" in the first instance of the term, and then the second instance can be more descriptive by writing out "number of revolutions". This is especially effective because you are describing "what" is decreasing. (By the way, I think "decrease" is a better term than "deplete").
The engine speed control system prevents the rapid decrease of the number of revolutions of the engine.
You can use the term "engine speed" in the first instance of the term, and then the second instance can be more descriptive by writing out "number of revolutions". This is especially effective because you are describing "what" is decreasing. (By the way, I think "decrease" is a better term than "deplete").
Note from asker:
| Thank you! |
49 mins
Milind Joshi
Native in English
Smooth changeover, meaning unbeaten
Native in: English 
, Marathi
Works in: Japanese to English, English to Marathi, English to Japanese
Engine revolution speed
回転数 is speed or count of rotations in a specified time, normally expressed as Revolutions Per Minute ; i.e. RPM.
The translation of your example is given below.
The translation of your example is given below.
Example sentence:
エンジン回転数制御装置はエンジン（の）回転数の急減を防止する。
The engine revolution speed governing device prevents rapid reduction of rotation speed
Reference:
http://www.geocities.jp/jitensha_tanken/pedal_rpm.html
http://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q14117619449
Note from asker:
| Thank you! |
Discussion
http://www.marklines.com/en/search?q=RPM
However RPM / rpm (Capital & small letters) both the ways are in practice.
Also, rpm is most commonly used in the lower case like mph (miles per hour) and should not be capitalized.