TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
ALLUMAGE CONSTANT [1 record]
Record 1 - internal organization data 2017-07-12
Record 1, English
Record 1, Subject field(s)
- Motors (Machinery)
Record 1, Main entry term, English
- four-stroke cycle
1, record 1, English, four%2Dstroke%20cycle
correct, officially approved
Record 1, Abbreviations, English
Record 1, Synonyms, English
- Otto cycle 2, record 1, English, Otto%20cycle
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A constant volume cycle of events used to explain the energy transformation that takes place in a reciprocating engine. 3, record 1, English, - four%2Dstroke%20cycle
Record number: 1, Textual support number: 1 OBS
Alphonse Beau de Rochas, a French engineer (1815-1893), ... created the ideal thermodynamic cycle of the 4-stroke engine (1862). Its cycle was implemented by Nicolaus Otto. Hence, the French use "cycle de Beau Rochas" but "Otto cycle" is more commonly used, especially in North America. 4, record 1, English, - four%2Dstroke%20cycle
Record number: 1, Textual support number: 2 OBS
The four strokes of a cycle are intake, compression, power and exhaust. 4, record 1, English, - four%2Dstroke%20cycle
Record number: 1, Textual support number: 3 OBS
four-stroke cycle: term officially approved by the Lexicon Project Committee (New Brunswick). 4, record 1, English, - four%2Dstroke%20cycle
Record 1, Key term(s)
- 4-stroke cycle
Record 1, French
Record 1, Domaine(s)
- Moteurs mécaniques
Record 1, Main entry term, French
- cycle à quatre temps
1, record 1, French, cycle%20%C3%A0%20quatre%20temps
correct, masculine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
- cycle d'Otto 2, record 1, French, cycle%20d%27Otto
correct, masculine noun
- cycle Beau de Rochas 3, record 1, French, cycle%20Beau%20de%20Rochas
correct, masculine noun, France, officially approved
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Alphonse Beau de Rochas, [était un] ingénieur français(1815-1908). Il établit le cycle thermodynamique idéal des moteurs à explosion à quatre temps(1862) à allumage commandé. [...] Nicolaus Otto était un ingénieur allemand(1832-1891) qui industrialisa le premier moteur 4 temps suivant le principe de Beau de Rochas. Ce cycle théorique est la base du moteur 4 temps à allumage commandé dans lequel la combustion se produit à volume constant. 2, record 1, French, - cycle%20%C3%A0%20quatre%20temps
Record number: 1, Textual support number: 2 OBS
L’expérience se déroule en quatre phases successives : admission des gaz, compression du mélange gazeux, explosion, échappement des gaz brûlés. 4, record 1, French, - cycle%20%C3%A0%20quatre%20temps
Record number: 1, Textual support number: 3 OBS
Puisque ce cycle fut établi par le Français Alphonse Beau de Rochas, il porte en France, le nom de son inventeur. Toutefois, puisque l’Allemand Nikolaus Otto industrialisa le premier moteur fonctionnant selon ce principe, ce cycle s’appelle ailleurs et surtout en Amérique du Nord, «cycle d’Otto». 5, record 1, French, - cycle%20%C3%A0%20quatre%20temps
Record number: 1, Textual support number: 4 OBS
cycle à quatre temps; cycle Beau de Rochas : termes uniformisés par le Comité du projet de lexiques (Nouveau-Brunswick). 5, record 1, French, - cycle%20%C3%A0%20quatre%20temps
Record 1, Key term(s)
- cycle à 4 temps
Record 1, Spanish
Record 1, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: