Views: 3 Author: Site Editor Publish Time: 2021-08-17 Origin: Site
Chapter 2 Dongfeng Adjustment and Common Faults of Cummins
The engine is a power plant for a car. It is the heart of the car. When the engine is operating, the thermal energy released when the fuel is burned into mechanical energy, and the power is output from the flywheel of the engine.
The engine is mainly divided into gasoline engines and diesel engines according to their use of fuel. In recent years, Dongfeng Military off-road vehicle EQ2082E6D. EQ2100E6D. EQ2102G has used Dongfeng Cummins diesel engine, and the original military off-road vehicle EQ2100E, EQ2081E is separately {[1] EQ6105. EQ6100 gasoline engine This chapter focuses on Cummins engine.
Basic inspection and adjustment of the first engine
1. Adjustment of throttle wire
First, connect both ends of the throttle wire, adjust the adjustment nut of the throttle brushed oil pump. While ensuring the idle speed of the engine, the center wire of the thrust wire is in a tight state. In the engine flameout state, the accelerator pedal is pressed to the bottom, and the accelerator mechanism of the oil pump should be in the maximum angular angle.
2. Adjustment of idle fine-tuning wire
Return the idle fine tuning knob counterclockwise to the locked position, and the idle fine tuning thread wire is attached, and then the adjustment screw of the idle throttle is installed on the idle adjustment bracket, adjust the adjustment screw, when this lever is adjacent Connect the lever to fix the adjustment screw when the lever is in contact
3, turn off the adjustment,
After the two ends of the flameout pull, the adjustment nut of the flameout drawing oil pump is adjusted, and the center wire of the extinguishing tilation is tightly adjusted while ensuring full opening of the engine throttle.
4, adjustment of valve clearance
The rotating crankshaft to a cylinder is in the compression stop, adjust the first, second, four-cylinder intake door, first, third, and five-cylinder exhaust door. The rotating crankshaft to the six nail is in the compression stop, adjust the third, five, six-cylinder intake doors, second, fourth, and six tank exhaust doors.
Note: The intake gap is: 0.25mm, exhaust valve clearance: 0.50mm (B series engine)
Exhaust door gap is: 0.30mm, exhaust door clearance: 0.61mm (C series engine)
Maintenance and maintenance of the second fuel system
During the operation, the diesel engine contains water and impurities in diesel. They are very easy to cause the precision component in the fuel system, and therefore, the maintenance and maintenance of the fuel system is very important. In addition. Due to the oil of the fuel tank, or due to The reasons for damage to the tubing, the connection head loose, etc., which will also cause air into the fuel system to exhaust.
1. Maintenance and maintenance of fuel systems
The moisture and impurities of the depth of the fuel system (oil water separator) should be excluded periodically: When adding fireworks, the gas station of the regular oil company should be selected as much as possible, and it can be sedate 72 hours after adding to the tank. . Should be selected according to the seasonal change, the apparent diesel,
2. Fuel system exhaust
1) Various air in the oil tube
First, loosen the deflation screw fixed to the intake pipe joint, shake the oil pump hand rocker arm, drain the air until the diesel discharged from the discharge screw does not contain air bubbles, tighten the discharge screw.
2) Air supply in the irradiation
Loosen 1 to 6 cylinders of high pressure tubes, fixed to the injector, the injector, start the engine, to be high-pressure tube to overflow the diesel without bubbles, tightening the nuts Nuts pay attention to each time the engine must not exceed 30 seconds, two start intermediate separation 2 minutes
This article is reproduced from: Dongfeng Truck Corporation Heavy Car Factory - \"Military Dongfeng off-road vehicle Adjustment and Maintenance Manual\"
