2. Debugging existing supply uneven
Debugging in the fuel pump test rig, in the request the cylinder rated speed of the unevenness of oil should be <3%. Actual debugging process, as a test-bed for the injector and high pressure tubing length, shape, diameter, and so can not be fully consistent with the original machine, coupled with the difference in debugging technology, fuel pump installed, the actual oil injected into the cylinder often uneven volume of> 3%.
3. Mechanical failure caused by uneven supply
After long-term use of motorcycles, or fuel pump drive coupling Songkuang gap too large, drive gear wear, Backlash increases will also affect the uniformity of cylinder oil. In addition, high-pressure pipeline joints due to frequent vibration or tightened enough leakage, and the tightening of the joint Ambassador metal loss and blocked the pipeline, the same will be caused tanks of oil uneven.
In addition, the fuel pump and the governor in the spring, one of the strong deformation larger, higher operating frequency was the plunger spring. Therefore, its higher frequency broken. Light, Fuel Injector reduction in the volume of the cylinder fuel injection uneven, the cylinder fuel injection interval ultra-poor, injector start time delay to heavy oil supply interruption can not even supply.
Second, the fuel pump installed after further adjustment
1. Fuel pump to the basis for the adjustment
According to the cylinder and the exhaust temperature, pressure or breathing color to determine their actual work with the diesel engine combustion of the fuel supply tank to determine the volume too much or too little, too early or too late supply, and then to readjust . Through appropriate adjustments in the oil tank and dispensing time for the fuel pump to the cylinder diesel engine in accordance with the principles of DAMA oil to remove the cylinder real difference.