What does Audi 30fsl mean?

1 Answers
StMartin
07/29/25 8:12pm
Audi 30fsl refers to the engine being a 2.5-liter gasoline direct injection engine. Advantages of direct injection engines: During stratified combustion, the fuel injector can be controlled to start injecting fuel just before the spark plug ignites when the piston reaches the top of the compression stroke. The air layer during combustion isolates heat, reducing heat transfer to the cylinder walls, thereby minimizing heat loss and improving engine thermal efficiency. Disadvantages of direct injection engines: They require high-pressure fuel injectors to enhance fuel atomization and mixing efficiency. The direct injection system in these engines demands high-quality, high-octane fuel for stable performance.
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