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the diesel engine.

it takes one ignition to start, then it runs off of (autoignition) ignition from heat caused by high compression.

compression ignition (autoignition) causes ignition to happen a little earlier than spark ignition engines (gas engines) which is less vulnerable to risk of engine knocking or wasted power when dealing with high compression.

-maddmatt

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โˆ™ 2009-10-03 08:39:03
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Q: Which engine has highest compression ratio?
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Which engine is more efficient in terms of compression ratio?

For a conventional gasoline engine, the higher the compression ratio, the more efficient the engine. US passenger cars have not had very high compression ratios for about 30 years for multiple reasons. During 1970-1972, Chrysler had the highest compression ratios in US production cars, requiring the highest octane gasoline to operate properly.


What is the compression ratio of a diesel engine?

The compression ratio of a Diesel ranges from 14:1 to as high as 25:1. I agree just depends on engine.


What is normal compression for a Ford 7.3L diesel engine?

It has a compression ratio of 17.5:1


What is the compression ratio on a 97 vortec engine?

9.4:1


What is a compression ratio?

Compression Ratio is the ratio between the original volume and the compressed volume in combustion chamber. The compression ratio is denoted as CR. It is the measure of how much air-fuel mixture is compressed during the compression stroke in the case of the gasoline engine (in the case of the diesel engine only air is compressed. Compression ratio is found by dividing the volume of stroke of the cylinder (swept volume) and clearance volume when the piston is at BDC by the volume when the piston is at TDC (ie clearance volume). Compression ratio= (Swept volume + Clearance volume) / Clearance volume. For example engine has a Swept volume of 700 cc. It has clearance volume 50 cc. Compression ratio= (700 + 80) / 80 =9.75: 1 It means Air fuel mixture is compressed to 1/9.75 of its original volume during compression stroke.

Related questions

What is the highest compression ratio?

Compression ratio simply means the difference in size of the original vs compressed unit. Compression ratio is a commonly used term for internal combustion engine piston/cylinder compression and file compression. Ratios differ depending on the type of engine or the type of file being compressed. In file compression, 7zip has the highest compression ratio.


Which engine is more efficient in terms of compression ratio?

For a conventional gasoline engine, the higher the compression ratio, the more efficient the engine. US passenger cars have not had very high compression ratios for about 30 years for multiple reasons. During 1970-1972, Chrysler had the highest compression ratios in US production cars, requiring the highest octane gasoline to operate properly.


Compression ratio of the internal combustion engine is defined as?

The compression ratio of an internal-combustion engine, or an IC engine as it is more commonly called, is the ratio of the volume the highest capacity of the combustion chamber to its lowest capacity. In the IC engine, the piston makes a stroke, resulting in the compression of the air in the combustion chamber - the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke, is the compression ratio.


High Compression ratio not used in spark ignition engine?

S.I Engine lower compression Ratio is 6 to 11


What is a critical compression ratio?

The lowest compression ratio of a compression-ignition engine that allows a specific fuel to be ignited by compression ignition.


What is compression ratio of a fuel?

It depends on the engine.


Is theoretical compression ratio equal to actual compression ratio for an SI engine?

No, because there is always some leakage.


What is the compression ratio of a diesel engine?

The compression ratio of a Diesel ranges from 14:1 to as high as 25:1. I agree just depends on engine.


What is meant by the compression ratio of a combustion engine?

The compression ratio of a combustion engine is the relationship of the largest and smallest capacities of the combustion chamber. A higher compression ratio is advantageous because the engine operates more efficiently, extracting more mechanical energy from the fuel. Most gasoline-powered engines have a compression ratio of around 10:1.


Compression ratio of K20A3 engine?

9.5:1


What is normal compression for a Ford 7.3L diesel engine?

It has a compression ratio of 17.5:1


V engine Compression ratio?

The compression ratio of engines is a value that demonstrates or shows the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity.

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