Technologies

[wongsion]

Evaluating the ET test on inyector cutoff ,  how much asimmetry is permitted on inyector time duration?

The engine is a Cat-3516B

[syahrir]

Maximum difference of cyl duration is 13%.

I used this methode when performing cylinder cut out test for 3500 engine

1. Perform 3 times cyl cut outfor each cyl.

2. Find the average of duration for each cylinder.

3. Find the average of duration for all engine.

4. Find the deviation of duration average between cylinder and engine.

5. Calculate percentage of duration deviation by this formula ; (cyl. average - engine average)/engine average X 100%

[eng_aljazari]

THE DEVIATION MAY NOT BE MORE THAN 3% !

AFTER CHANGING ONE OR MORE INJECTORS

TEST AGAIN!!!!