Which is better direct injection or fuel injection?
Both systems use electronic fuel injectors to spray fuel into the engine, but the difference is where they spray the fuel. With port injection systems, fuel is sprayed into the intake ports. With direct-injection technology, the main benefit is better fuel economy for most applications and a bit more power.
What is the difference between IDI and DI engine?
IDI and DI engines have different combustion chamber designs, the later having a more traditional design while the IDI has a “pre-chamber” in which fuel is injected into before traveling into the actual combustion chamber.
Is indirect injection better than direct injection?
Indirect injection in an internal combustion engine is fuel injection where fuel is not directly injected into the combustion chamber. Direct injection allows the fuel to be precisely metered into the combustion chamber under high pressure which can lead to greater power, fuel efficiency. …
Is there a difference between PFI and GDI?
The GDI engine operates by injecting fuel directly into the combustion chamber, where the air and fuel are mixed prior to ignition. In Port Fuel Injected (PFI) engines, the fuel is injected into the intake manifold and mixed with the air prior to entering the combustion chamber.
What is an IDI engine?
The International Harvester IDI (from Indirect Injection ) engine is a 4-stroke 8-cylinder Diesel engine used in International Harvester trucks, Ford F-Series pickups, and Ford E-Series vans from 1983 to 1994.
What is the fuel pressure of direct injection?
What is Direct Injection. Instead of delivering the fuel via an injector in the intake track before the intake valve, GDI or gasoline direct injected engines inject a very fine mist of fuel directly in to the combustion chamber hence the name Direct Injection. Direct injectors operate at fuel pressures that vary between 450 — 3000 Psi.
What is an indirect fuel injector?
Indirect injection. In an internal combustion engine, the term indirect injection refers to a fuel injection where fuel is not directly injected into the combustion chamber. Gasoline engines are usually equipped with indirect injection systems, wherein a fuel injector delivers the fuel at some point before the intake valve.