Leading the cause of the Cummins engine without idling

Condon the cause of the Cummins engine:
1. Cummins have no idle speed during cold start, which is generally normal. This is due to the low temperature, the oil viscosity is large, resulting in an increase in the resistance of the engine, and the spray of diesel, the evaporation conditions are deteriorated, causing the engine that cannot maintain the low-stable speed of the zui, when the throttle is lifted, so it quickly turned off. In this case, the throttle can be adjusted slightly higher than the idle speed, and the idle operation is restored after the engine is warmed.
2. If the engine has been used for a long time, no idling work condition, and the amount of fuel consumption is not normal, generally due to the plunger wear, the amount of oil leakage is increased, so that the amount of oil supply cannot meet the requirements of idle speed; or The cylinder pressure is too low, the injector is too large, too small, causing the engine combustion condition. As long as the idle condition will naturally recover according to the fault of driving force.
3. If the above situation is normal, the Cummins engine should consider whether there is abnormalities in the idle work elements of the governor. Check that the governor spring is not broken, or the speed of the regulator is too much or the spring is too soft, so that the flying hammer is far greater than the spring tension while reducing the oil, or the maintenance personnel are not adjusted. The fuel injection pump assembly must be removed in the test bench again re-adjusted adjustment.
4. When checking the governor, the first should be adjusted by idle screws. If the adjustment is invalid, the adjustment of the idling spring pre-tension is again. The idle spring adjustment nylus can be slightly screwed in the spring block, and the preload is increased, and the idle speed is increased. If the spring is broken, it should be replaced and adjusted, so that the idle performance can be restored.

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