New Common Rail Diesel Injector Ejbr03301d for Jmc Transit 2.8L Van 114bhp
products detail
Used in Vehicles / Engines
| Product Code | EJBR03301D |
| Engine Model | / |
| Application | JMC Transit 2.8L Van 114bhp |
| MOQ | 6 pcs / Negotiated |
| Packaging | White Box Packaging or Customer's Requirement |
| Warranty | 6 months |
| Lead time | 7-15 working days after confirm order |
| Payment | T/T, PAYPAL, as your preference |
Diesel engines often have some abnormal phenomena during the working process, and these signs of failure cannot be identified at a glance, but it is not necessary to check with instruments. The following methods can be used to check: ①Measure the cylinder pressure by rebound method When the diesel engine is not decompressed, try to shake the engine. When you shake it to a certain angle, you will feel a lot of resistance. When the rotation trend is the elastic force, the pressure of the cylinder can be judged according to the elastic force, so as to judge the working condition of the cylinder. ②Use the palm of your hand to judge the combustion situation. Diesel engines generally do not emit darker and thicker smoke under normal operating conditions, and even if there is a little, it is very short-lived. Among the sold cigarettes, they are generally divided into three types: blue, black, and white, but it is difficult to distinguish the color, so it is difficult to judge the combustion of the mixture. According to experience, you can use the palm of your hand to catch the smoke for inspection.
In the actual working process of the injector, the flow coefficient of the nozzle is not only affected by the movement of the needle valve, but also by the structure of the flow field inside the nozzle. For a diesel engine, the fuel injector directly extends into the cylinder, and the high heat load and the drastic change of the ambient pressure change the movement of the needle valve and the cavitation at the outlet of the nozzle. And because the working environment of the fuel injector is extremely harsh, it is directly exposed to the combustion chamber, and the carbon deposits generated by the oxidation and polymerization of the oil film at the nozzle hole accumulate in the nozzle hole, resulting in a change in the flow coefficient and affecting the health of the fuel injector. Therefore, realizing the instantaneous on-line monitoring of the nozzle flow coefficient of the injector during the needle valve movement can effectively carry out real-time health assessment and fault diagnosis of the injector, and provide a basis for advanced fuel injection quantity control strategies.
for reference.
In different stages of needle valve movement, there are significant differences in the flow coefficient of the nozzle. When the needle valve is continuously at the maximum lift position, the effective flow area of the nozzle is continuously at the state of maximum flow area, and the fuel injection volume hardly changes, while the flow coefficient of the nozzle changes the most when the needle valve is opened and seated. Usually, the single injection time is about 1ms, and the needle valve is mostly in a moving state rather than at the maximum limit.
