Many car owners have this experience. When the engine speed is very high, there is a fuel cut-off. The small editor of the automatic transmission maintenance manufacturer will explain why you do this next? The manufacturer's design will not be aimless, so Xiaobian consulted the maintenance master of 4S store and now shares the results with the majority of car owners.

首先來看什么是發動機斷油。發動機斷油是指發動機在轉速達到一定高度是，如8000轉/分，行車電腦會自動停止對發動機供油，令發動機轉速不能超過限值，這是廠家出于保護發動機的目的而特別設計的。

First, let's look at what is engine oil cut-off. Engine oil cut-off means that when the engine speed reaches a certain height, such as 8000 rpm, the trip computer will automatically stop supplying oil to the engine, so that the engine speed can not exceed the limit, which is specially designed by the manufacturer for the purpose of protecting the engine.

普通發動機設計轉速通常不會超過8000轉/分，但是競技用發動機，如F1所用的發動機，通常換擋轉速都會在18000轉/分以上。然后怎么提前預知要出現發動機斷油呢?其實在轉速表上一般都用紅區標示發動機的危險轉速，當指針進入紅區后，發動機一般都會停止燃油噴射。如果是自動擋車型，則會自動換擋以降低發動機轉速。

The design speed of ordinary engine usually does not exceed 8000 rpm, but the shift speed of competitive engine, such as the engine used in F1, is usually more than 18000 rpm. Then how can we predict in advance that there will be an engine fuel cut-off? In fact, the red zone is generally used to indicate the dangerous speed of the engine on the tachometer. When the pointer enters the red zone, the engine will generally stop fuel injection. In the case of automatic models, it will shift automatically to reduce the engine speed.

所以，出現發動機斷油的時候不要誤以為是發動機出問題了。另外，為了自己的愛車著想，自動變速箱維修廠家小編建議不要使發動機轉速提的太高。

Therefore, when the engine is out of oil, don't mistakenly think that there is something wrong with the engine. In addition, for the sake of your car, the small editor of the automatic transmission maintenance manufacturer recommends not to raise the engine speed too high.