diesel engine
noun
: an internal combustion engine in which air is compressed to a temperature sufficiently high to ignite fuel injected into the cylinder where the combustion and expansion actuate a piston
Examples of diesel engine in a Sentence
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Unlike modern locomotives that use diesel engines to power electric motors, the Big Boy class was originally fueled with burning coal, which heated up water to make the steam that moved the pistons connected to the wheels.
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Trevor Hughes, USA Today, 25 May 2026
Earlier, there were plans to replace diesel engines and generators across the fleet, but those plans have now been dropped.
—Sujita Sinha, Interesting Engineering, 19 May 2026
This battery charger can jump-start gas or diesel engines in seconds, so you’re never stuck with a dead battery far from help.
—Karthika Gupta, Travel + Leisure, 14 May 2026
Industrial facilities, large buildings, institutional facilities, hospitals and electric utilities have diesel engine generators, which serve as backup and emergency power.
—Nick Lentz, CBS News, 4 May 2026
See All Example Sentences for diesel engine
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Trevor Hughes, USA Today, 25 May 2026
Earlier, there were plans to replace diesel engines and generators across the fleet, but those plans have now been dropped.
—Sujita Sinha, Interesting Engineering, 19 May 2026
This battery charger can jump-start gas or diesel engines in seconds, so you’re never stuck with a dead battery far from help.
—Karthika Gupta, Travel + Leisure, 14 May 2026
Industrial facilities, large buildings, institutional facilities, hospitals and electric utilities have diesel engine generators, which serve as backup and emergency power.
—Nick Lentz, CBS News, 4 May 2026
See All Example Sentences for diesel engine
Cite this Entry
“Diesel engine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diesel%20engine. Accessed 28 May. 2026.
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