What is nozzle injection?
An injector nozzle is a fine sprayer through which fuel is injected into an engine. The top of the injector nozzle has a lot of holes to deliver a spray of diesel fuel into the cylinder. The fuel is sprayed through an injector nozzle, typically at high pressure, to improve the mixing of fuel with air.
How do you stop a nozzle tip from leaking?
There are two equally effective ways to reduce the amount of contact area between the nozzle tip and the sprue bushing. You can either reduce the outside diameter of a small section of the nozzle tip, or decrease the 3/16–in. (0.1875 in.) depth of the sprue bushing nozzle seat, as shown in Fig.
What indicates the injection nozzle trouble?
INJECTION NOZZLE FAULTY: SYMPTOMS Increased fuel consumption. Loss of power. Fluctuating idle speed. Poor exhaust emission performance (e.g. emissions test readings)
What causes nozzle failure?
Missing sealing rings, incorrect tightening torque, excessive use of grease, incorrect cleaning of the nozzle can cause poor performance, misfiring, black smoke to come on. Check out in next pages our Failure Chart for nozzles.
What is the nozzle size?
The orifice size of the nozzle determines the operating pressure of your machine. As a rule of thumb, the smaller the orifice, the greater the restriction of water flowing through the machine. This causes the pressure to increase. Choosing a nozzle with too large of an orifice will reduce operating pressure.
How many types of nozzle are there?
There are 5 basic spray pattern types: flat fan, solid stream, full cone, hollow cone and mist/fog. Various nozzle designs are deployed to create these patterns and details on each can be found in the sections below.
What is nozzle tip?
The nozzle tip is the point where the molten plastic leaves the injection unit and enters the mold. Proper alignment also allows for plastic to be injected into the mold with a clear path into the runner system. A properly selected, and properly aligned nozzle tip should allow for a robust processing window.
What is the purpose of injector nozzle?
The fuel injector is a small nozzle into which liquid fuel is injected at high pressure. It works like a spray nozzle of a pressure washer. The placement of the injector can be in a different part of the engine depending upon the type of fuel injection system is being used.
What is needle injector?
A jet injector, also known as a jet gun injector, air gun, or pneumatic injector, is a medical instrument that uses a high-pressure jet of liquid medication to penetrate the skin and deliver medication under the skin without a needle. Jet injectors can be single-dose or multi-dose jet injectors.
What is diesel injection pressure?
Unlike gasoline engines with fuel injection pressures of 30 to 50 PSI, diesel engine fuel pressure runs up in the Megapascal range, from 4,500 to 30,000 PSI. It takes very high fuel pressure to force fuel into the high compression cylinder of a diesel.
What is a diesel fuel injection?
Diesel fuel injection The fuel injection system in petrolengined cars is always indirect , petrol being injected into the inlet manifold or inlet port rather than directly into the combustion chambers. This ensures that the fuel is well mixed with the air before it enters the chamber.