The valve adjustment sequence of six-cylinder diesel engine is as follows

Valve adjustment sequence of six-cylinder diesel engine;

According to the sequence of 153624, considering the working cycle, the working conditions of air intake, compression, work and exhaust are exactly 180 ignition interval = 720/6 cylinders per cycle = 120.

At the same time, the position of the camshaft should be considered: the valve can be adjusted in the gentle area of the cam, and the cam rotates twice in one cycle.

This is the crankshaft position map. You can see that if you adjust 1 cylinder, you will definitely not adjust cylinder 6, cylinder 2, cylinder 3 and cylinder 4 (that is, adjust the intake of 1 cylinder/adjust the intake of cylinder 6, and so on), then when the train is scheduled, that is, when 1 cylinder and cylinder 6 are at the top dead center, 60. At this time, cylinder 5 is in the process of compression stroke, and the next stroke is to do work due to the lag angle of intake air (β = 30 ~ 80), so the exhaust valve can be adjusted. At this time, cylinder 3 is in the intake stroke, and obviously only the exhaust can be adjusted. Note that the last stroke of cylinder 3 is exhaust, and the exhaust has a lag angle (δ = 0 ~ 30). Here we can find the intake stroke of cylinder 3 through analysis. Naturally, it will not affect our adjustment. By the way, the overlap angle of intake and exhaust (the angle at which the intake advance angle α overlaps the exhaust lag angle δ) is known as α+δ = 0 ~ 30+0 ~ 30 = 0 ~ 60, and the exhaust advance angle γ = 40 ~ 80. That is to say, the order of valve adjustment is: 1 cylinder intake, cylinder 2 intake, cylinder 3 intake, cylinder 4 intake and cylinder 5 intake.

Summary: ignition sequence adjustment 153624: 1 inch, 2 inches, 3 inches, 4 inches, 5 inches;

Adjustment of 142635: 1, 2 lines, 3 lines, 4 lines and 5 lines;

Intake advance angle: α = 0 ~ 30;

The lag angle of inlet: β = 30 ~ 80;

Exhaust advance angle: γ = 40 ~ 80;

Exhaust lag angle: δ = 0 ~ 30.