Admin What is the purpose of a heating device on a mechanical injector?
The heating system is an electronic device that heats and maintains the contrast medium at or near body temperature and reduces the viscosity of certain contrast agents, thereby facilitating the setting of certain flow rates from the injector. It is usually located on the injector head close to the syringe.
How are the injectors checked for diagnosing faults?
Answer: The easiest way is to listen to the injector with a mechanic’s stethoscope or a length of hose. You should hear a clicking sound as the injector’s valve opens and closes. However, if the injector is clogged, even if it’s working it’ll not spray any fuel.
What is ported injection?
Port Fuel injection is when fuel (either gasoline or diesel fuels) is injected prior to the valve and cylinder, where the combustion happens. The intake valve will have a fuel injection system that sprays fuel into the air coming into the engine.
How much PSI does an injection pump have?
Because of the need for positive injection into a very high-pressure environment, the pump develops great pressure—typically 15,000 psi (100 MPa) or more on newer systems.
What is bleeding in injection system?
As the fuel travels through the injectors, small amounts of fuel are injected into the combustion chamber. Air bubbles introduced into the supply lines by a fuel filter change or by running out of fuel will prevent the engine from starting and running normally. The air must be bled out until the system is purged.
What is intake port?
Intake ports are the final part of an engine’s air induction system. They connect the intake manifold with the combustion chamber and are opened and closed with the intake valves. In Diesel engines, the piston bowl also helps with that task.
Which is better port injection or direct injection?
Port injection provides a better, more stable air/fuel mixture at lower engine speeds, which results in smoother operation upon startup. At higher rpm, direct injection provides a greater cooling effect, allowing for more power and less chance of knock.
What voltage should be at injectors?
They should all be around 12 volts. A lower reading means there is excess resistance in the wire somewhere. Hopefully, these tests have allowed you to find the issue with your fuel injectors; but, as mentioned before, it may not be an electrical problem that is causing the injector to malfunction.