Are there any downsides to direct injection?
There are numerous benefits to direct injection, including fuel efficiency, improved emissions, lower engine temps, etc. But it also has its downsides as the fuel injectors tend to become problematic over time.
What causes the fuel injector to fail on a VW?
Over time, this pressure and heat can cause normal wear and tear and lead to the fuel injectors leaking. Additionally, they can get gunked up or clogged. As either of these issues persist, the fuel injector can flat-out fail.
Where are the injectors in a mono point system?
A mono point injection system uses one injector placed just in front of the throttle valve. A multi point injection system uses one injector per cylinder placed in the inlet manifold just in front of the inlet port of a cylinder.
How does an injector work when the current is strong?
A strong enough current flowing though the coil generates a magnetic field lifting the pin off the seat, opening the injector. While the current remains, the injector is held open. When the current is interrupted, the spring pressure pushes the metal pin back to its original position, closing the opening.
How does pressurized fuel enter the fuel injector?
Pressurized fuel enters the fuel injector. Based on a signal from an electrically controlled solenoid valve – the solenoid valve acts as a type of on / off valve – the fuel enters a plunger, which prepares the fuel for the final exit. When the fuel leaves the fuel injector, a spray tip distributes the fuel as a fine mist.
What’s the pressure of a diesel injector pump?
Today’s diesel fuel injection pumps are under pressure – even more pressure than what was once considered “normal.” Around 15-20 years ago, it was common for fuel injector pumps to process fuel in a system at around 10,000 to 15,000 psi (pounds per square inch). But that’s only about half of what engines are expected to do today.
Can a bad fuel injector cause cel to come on?
Although this could mean a lot of things, a bad fuel injector could be one of them. Any time an injector delivers less fuel than needed (or more in some cases), the engines efficiency is lowered and can trigger the CEL to come on. Use an OBD2 scanner to confirm the issue.
How is the speed of the injector controlled?
The injector in a basic picture is an electronically controlled valve that is supplied with pressurized fuel from the fuel pump at a certain pressure level injector can be electromagnetically opened and closed at very high speed—this speed controlled by the electronic control unit using.