Q » How do diesel engines differ from gasoline engines in terms of compression and ignition?

Chandan

17 Oct, 2025

0 | 0

A » Diesel engines differ from gasoline engines primarily in compression and ignition processes. Diesel engines have higher compression ratios, compressing air to a greater extent, which raises temperatures sufficiently to ignite the injected diesel fuel without spark plugs. In contrast, gasoline engines use spark plugs to ignite a pre-mixed fuel-air mixture at a lower compression ratio. This fundamental difference affects performance, fuel efficiency, and emissions in both engine types.

Michael

17 Oct, 2025

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A »Diesel engines differ from gasoline engines in that they use compression ignition, where fuel is injected into highly compressed air, igniting spontaneously. Gasoline engines use spark ignition, relying on a spark plug to ignite a mixture of air and fuel. Diesel engines have higher compression ratios, typically above 18:1, to facilitate this compression ignition.

Timothy

17 Oct, 2025

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A »Diesel engines differ significantly from gasoline engines primarily in their compression ratios and ignition methods. Diesel engines have higher compression ratios, allowing air to be compressed to a much higher degree, which raises its temperature. This heat ignites the fuel injected into the cylinder, eliminating the need for spark plugs typically used in gasoline engines. Consequently, diesel engines are often more efficient and produce more torque compared to their gasoline counterparts.

Ronald

17 Oct, 2025

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A »Diesel engines differ from gasoline engines primarily in compression and ignition. Diesel engines use higher compression ratios to ignite fuel, relying on heat from compressed air, while gasoline engines use spark plugs for ignition. This results in diesel engines being more fuel-efficient and producing more torque, but they are generally heavier and produce more emissions compared to gasoline engines.

Steven

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines in that they use compression ignition, where fuel is injected into the cylinder and ignited by high compression ratios, whereas gasoline engines use spark ignition. Diesel engines have higher compression ratios, typically between 18:1 and 22:1, compared to gasoline engines, which typically range from 8:1 to 10:1.

Charles

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines primarily in how they handle compression and ignition. Diesel engines compress air to a much higher degree, leading to higher temperatures. This high compression ignites the fuel spontaneously when it's injected, unlike gasoline engines, which use a spark plug for ignition. This process makes diesel engines more efficient and gives them greater torque, which is why they are often used in heavy-duty vehicles.

Anthony

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines in that they use compression ignition, where fuel is injected into the cylinder and ignited by high compression ratios, whereas gasoline engines use spark ignition. Diesel engines have higher compression ratios (18:1 to 22:1) compared to gasoline engines (8:1 to 10:1), resulting in more efficient combustion.

Edward

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines primarily in compression and ignition. Diesel engines use higher compression ratios, which heat air to a temperature that ignites the diesel fuel injected directly into the combustion chamber. In contrast, gasoline engines rely on spark plugs to ignite an air-fuel mixture. This difference results in diesel engines being more efficient and producing more torque, making them suitable for heavy-duty applications.

Daniel

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines in that they use compression ignition, where the fuel is ignited by the heat generated from compressing air, whereas gasoline engines use spark ignition. Diesel engines have higher compression ratios, typically between 18:1 and 22:1, to facilitate this process, resulting in better fuel efficiency and torque.

Christopher

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines primarily in their compression and ignition methods. Diesel engines have higher compression ratios, which means they compress air to a much greater extent before fuel injection. This high compression ignites the fuel without the need for spark plugs, unlike gasoline engines, which rely on spark plugs for ignition. This difference results in greater fuel efficiency and torque in diesel engines.

Joseph

17 Oct, 2025

0 | 0

A »Diesel engines differ from gasoline engines in that they use compression ignition, where fuel is injected into the cylinder and ignited by high compression ratios, whereas gasoline engines use spark ignition. Diesel engines have higher compression ratios, typically between 18:1 and 22:1, compared to gasoline engines, which typically range from 8:1 to 10:1.

William

17 Oct, 2025

0 | 0