Engineering English
Diesel Cycle
Mechanical Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A thermodynamic cycle that models a compression-ignition internal combustion engine. It differs from the Otto cycle by having constant-pressure heat addition instead of constant-volume heat addition.
Example in context
“The Diesel cycle achieves higher thermal efficiency than the Otto cycle at the same compression ratio due to its constant-pressure heat addition process.”
“Dizel çevrimi, sabit basınçlı ısı ekleme işlemi sayesinde aynı sıkıştırma oranında Otto çevriminden daha yüksek termal verimlilik elde eder.”
Where engineers use it
The Diesel cycle is fundamental in designing compression-ignition engines used in trucks, ships, and generators. Engineers analyze it to optimize fuel injection timing and combustion chamber geometry.
Synonyms: Diesel engine cycle, CI engine cycle
Practice: can you use “Diesel Cycle” at work?
You need to improve fuel economy of a heavy-duty truck engine. Discuss how modifying the Diesel cycle parameters affects efficiency and emissions.
Show a model answer
“The Diesel cycle's constant-pressure heat addition allows for higher compression ratios than the Otto cycle.”
“Diesel Cycle” in 21 languages
| English | Diesel Cycle |
|---|---|
| Turkish | Dizel çevrimi |
| French | cycle Diesel |
| German | Diesel-Kreisprozess |
| Spanish | ciclo Diesel |
| Chinese | 狄塞尔循环 |
| Arabic | دورة ديزل |
| Portuguese | ciclo Diesel |
| Russian | цикл Дизеля |
| Japanese | ディーゼルサイクル |
| Italian | ciclo Diesel |
| Vietnamese | chu trình Diesel |
| Hindi | डीज़ल चक्र |
| Thai | วัฏจักรดีเซล |
| Indonesian | siklus Diesel |
| Korean | 디젤 사이클 |
| Bengali | ডিজেল চক্র |
| Dutch | Dieselcyclus |
| Swedish | Dieselmotorcykel |
| Finnish | Diesel-sykli |
| Ukrainian | цикл Дизеля |
Frequently asked questions
What does Diesel Cycle mean in engineering?
A thermodynamic cycle that models a compression-ignition internal combustion engine. It differs from the Otto cycle by having constant-pressure heat addition instead of constant-volume heat addition. In Mechanical Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Diesel Cycle?
Diesel Cycle is pronounced /ˈdiːzəl ˈsaɪkəl/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Diesel Cycle used in a sentence?
Example from an engineering context: “The Diesel cycle achieves higher thermal efficiency than the Otto cycle at the same compression ratio due to its constant-pressure heat addition process.”
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