Diesel engine touring car, diesel generator traveling car is

Check that the governor oil is not too dirty, too thick, or too little. Oil that is too dirty or too thick will increase drag and reduce the sensitivity of the governor. Among them, the impact on the flyball governor is the most obvious.

Remove the window cover of the fuel injection pump, pinch the oil level adjustment lever (or ring gear) with your hand to make the gear rod move gently. If the oil volume adjustment lever has a large moving resistance, it means that the fault is caused by the large movement resistance of the parts, and the decelerator cover should be removed to disconnect the oil volume adjustment lever from the governor. If the oil level adjustment lever can be tilted 45 at this time.

When it slides by itself, it means that the resistance is inside the governor, and it may be that the connection points of the governor are too tight, such as the centrifugal flying block is not flexible to retract, and the resistance of the sliding sleeve is too large. If the oil volume adjustment lever can only be pushed in a small range after disengaging from the governor, it means that the resistance is outside the governor, which may be: the plunger sleeve of a certain cylinder fuel injection pump is not installed vertically in the pump body, so that the adjustment fork (or tooth rod) is not flexible to pull; The plunger adjustment arm (or sector gear) is bent and deformed or loose, so that the oil adjustment lever cannot be pulled flexibly; The tightening force of the positioning screw of the plug sleeve is too large, resulting in the plunger sleeve and the pump body not perpendicular, and the plunger is not flexible when reciprocating.

If the oil volume adjustment lever is carried freely, the reason for the "traveling car" is that the connection points of various parts of the governor are loose, such as the flying block pin hole and the seat frame are too worn; The backlash of the oil supply tooth rod is too large; The rack (or adjusting fork) tie rod pin is loose; The axial clearance of the camshaft is too large; The governor shell is worn and loose, etc. If necessary, the governor should be overhauled to restore the normal fit clearance of each moving part. Check the axial clearance of the camshaft of the fuel injection pump.

If it exceeds the specified range, it should be adjusted. Check the governor flying block stroke and the preload of the governor spring. The stroke of the two flying blocks and the preload of the two sets of speed regulating springs are basically the same.

If the diesel engine is equipped with a pneumatic governor, the main reason for the "traveling car" is that the sealing is damaged. At this time, it is necessary to check whether the vacuum tube and the joints at both ends are leaking, whether the left chamber of the governor is well sealed, whether the diaphragm is damaged, and whether the right chamber is connected with the atmosphere.

The oil supply of the low-pressure oil circuit is insufficient, and there may be a place for air intake.

Because there is air in the oil circuit.

The traveling phenomenon of diesel generator set refers to the regular speed of fast and slow, which is usually caused by the abnormal air or governor in the fuel supply system. For reference only: (Yanan A Yanan Group: R & D and production of diesel generator sets and fuel cells).

So after knowing what caused the phenomenon of traveling, how do we repair it:

1.Air has entered the fuel, maintenance method: Install a glass tube in the oil circuit and check whether there is air in the fuel to discharge.

2.The EFC ESC is not properly tuned. Maintenance method: Adjust the method according to the to, or reduce the gain appropriately.

3.Actuator 2 issuance. Repair method: Loosen the fixing bolt, re-tighten as required, or replace the actuator.

4.The actuator is defective. Maintenance method: Remove the wire from the EFC controller to the actuator, connect the battery to the actuator, start the engine, and replace the actuator if the engine is idling.

5.There is a problem with the fuel pump. Maintenance method: Replace the fuel pump.

6.The voltage of the 24V power supply system is lower than that of 19V. Repair method: Charge the battery.

7.The genset charging the battery is not directly connected to the battery. Maintenance method: connect the genset armature wire directly to the battery.

First of all, you should be asking about diesel engines. The meaning of the traveling car refers to the unstable running speed of the engine, which fluctuates up and down, just like swimming. It is usually caused by a problem with the governor.