What is an indirect fuel injector?
Indirect fuel injectors are located on the rear of the right cylinder head, with a line that connects to the exhaust down tube. The injectors transfer diesel fuel from the low pressure side of the fuel pump to the high pressure side, and spray diesel fuel directly into the exhaust system.
What is the difference between direct and indirect fuel injection?
The difference between DI and IDI is the layout of the injection systems. The IDI system has a small swirl chamber above the cylinder, where the fuel is injected, there’s also a glow plug in the chamber needed to help start the engine.
What is the difference between direct and indirect diesel injection?
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.
What are the advantages of indirect fuel injection?
The advantages of the indirect injection (IDI) engine are its quieter combustion and a combustion system that is more amenable to high speed operation. The disadvantage of the IDI engine, is that the direct injection (DI) engine has a 10–15% lower fuel consumption.
How does Indirect Injection work in diesel?
In the Indirect Injection, the injector does not spray the diesel directly over the piston. Instead, it injects the diesel in an auxiliary or a ‘Pre-combustion chamber’ located inside the cylinder head. The Pre-combustion chamber creates swirling action in the compressed air.
What type of fuel injection nozzle is used in Indirect Injection engines?
Pintle-type injector nozzles
Pintle-type injector nozzles are typically used in diesel engines having an indirect injection (IDI) combustion chamber designs whist hole-type injector nozzles are used in engines having direct injection (DI) designs.
Is direct injection better?
Higher Performance Due to its fine atomization of the air-fuel mixture, direct injection produces more power than other systems because it allows for greater control over ignition timing and air/fuel ratio.
How many types of fuel injection systems are there?
The basic types of fuel injection systems are single-point fuel injection, multi-point fuel injection, sequential fuel injection, and direct injection.
What is indirect diesel injection?
An indirect injection diesel engine delivers fuel into a chamber off the combustion chamber, either a prechamber or swirl chamber, where combustion begins and then spreads into the main combustion chamber.
What are the two most commonly used types of diesel injection systems?
Diesel engines have historically used various forms of fuel injection. Two common types include the unit-injection system and the distributor/inline-pump systems.
What engines use Indirect Injection?
Examples include the BMC A-Series and B-Series engines and the Land Rover 2.25/2.5-litre 4-cylinder types. Such designs allow petrol and diesel versions of the same vehicle to be built with minimal design changes between them. Higher engine speeds can be reached, since burning continues in the prechamber.
How does indirect diesel injection work?