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Le rendement d’un moteur « à explosion » e … Le rendement d’un moteur « à explosion » est le rapport de la puissance mécanique restituée à la puissance thermique fournie par le carburant. Ce rendement est toujours majoré par le rendement de Carnot, et ce dernier varie avec l'écart de température. Les rendements des moteurs à explosion peuvent donc être différents selon les types d'applications et de carburants considérés. Par exemple, les meilleurs moteurs de série pour usage automobile ont des rendements pouvant atteindre 36 % pour un moteur à essence à allumage commandé et 42 % pour un moteur diesel, tandis que les meilleurs moteurs industriels à fioul lourd peuvent avoisiner 50 %.iels à fioul lourd peuvent avoisiner 50 %.
, كفاءة المحرك للمحركات الحرارية هي العلاقة … كفاءة المحرك للمحركات الحرارية هي العلاقة بين الطاقة الكلية التي يحتويها الوقود المُستخدم في المحرك وكمية الطاقة المستخدمة التي تُقدم شُغل فعلي. وهناك تصنيفين للمحركات الحرارية: 1.
* محركات احتراق داخلي مثل المحركات التي تعمل بدورة أوتو و دورة ديزل و دورة برايتون والعنفة الغازية. 2.
* محركات احتراق خارجي مثل المحركات البخارية و العنفة البخارية و دورة ستيرلينغ. وكل هذه المحركات يكون للكفاءة حرارية لها خصائص فريدة تتميز بها هي وفقط. حرارية لها خصائص فريدة تتميز بها هي وفقط.
, Il rendimento termico è l'espressione dell'estrazione di calore rispetto a quella potenzialmente disponibile e il suo valore non può essere superiore a 1, ma al massimo pari ad 1 o più generalmente inferiore a esso.
, Engine efficiency of thermal engines is th … Engine efficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful work. There are two classifications of thermal engines- 1.
* Internal combustion (gasoline, diesel and gas turbine-Brayton cycle engines) and 2.
* External combustion engines (steam piston, steam turbine, and the Stirling cycle engine). Each of these engines has thermal efficiency characteristics that are unique to it. Engine efficiency, transmission design, and tire design all contribute to a vehicle's fuel efficiency.contribute to a vehicle's fuel efficiency.
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Engine efficiency of thermal engines is th … Engine efficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful work. There are two classifications of thermal engines- 1.
* Internal combustion (gasoline, diesel and gas turbine-Brayton cycle engines) and 2.
* External combustion engines (steam piston, steam turbine, and the Stirling cycle engine). Each of these engines has thermal efficiency characteristics that are unique to it. Engine efficiency, transmission design, and tire design all contribute to a vehicle's fuel efficiency.contribute to a vehicle's fuel efficiency.
, Le rendement d’un moteur « à explosion » e … Le rendement d’un moteur « à explosion » est le rapport de la puissance mécanique restituée à la puissance thermique fournie par le carburant. Ce rendement est toujours majoré par le rendement de Carnot, et ce dernier varie avec l'écart de température. Les rendements des moteurs à explosion peuvent donc être différents selon les types d'applications et de carburants considérés. Par exemple, les meilleurs moteurs de série pour usage automobile ont des rendements pouvant atteindre 36 % pour un moteur à essence à allumage commandé et 42 % pour un moteur diesel, tandis que les meilleurs moteurs industriels à fioul lourd peuvent avoisiner 50 %.iels à fioul lourd peuvent avoisiner 50 %.
, كفاءة المحرك للمحركات الحرارية هي العلاقة … كفاءة المحرك للمحركات الحرارية هي العلاقة بين الطاقة الكلية التي يحتويها الوقود المُستخدم في المحرك وكمية الطاقة المستخدمة التي تُقدم شُغل فعلي. وهناك تصنيفين للمحركات الحرارية: 1.
* محركات احتراق داخلي مثل المحركات التي تعمل بدورة أوتو و دورة ديزل و دورة برايتون والعنفة الغازية. 2.
* محركات احتراق خارجي مثل المحركات البخارية و العنفة البخارية و دورة ستيرلينغ. وكل هذه المحركات يكون للكفاءة حرارية لها خصائص فريدة تتميز بها هي وفقط. حرارية لها خصائص فريدة تتميز بها هي وفقط.
, Il rendimento termico è l'espressione dell'estrazione di calore rispetto a quella potenzialmente disponibile e il suo valore non può essere superiore a 1, ma al massimo pari ad 1 o più generalmente inferiore a esso.
|
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Engine efficiency
, Rendimento termico
, كفاءة محرك
, Rendement d'un moteur à explosion
|
