Is fuel injector used in SI engine?
Table of Contents
- 1 Is fuel injector used in SI engine?
- 2 Why can’t we use spark plugs in diesel engine atomizer fuel injection system in gasoline?
- 3 Why fuel injector is used in diesel engine?
- 4 Why is supercharging not popular with SI engines?
- 5 Which factor in the design of combustion chamber to avoid detonation in SI engine is not applicable?
- 6 Why are fuel injectors not used in diesel engines?
- 7 What is the difference between EFI and additional fuel injectors?
Is fuel injector used in SI engine?
In these times injection is the basic solution of supplying of fuel in the Spark-Ignition (SI) engines. The systems of fuel injection were characterized by different place of supplying of fuel into the engine. injection directly into the each cylinder, Direct Injection – DI (Figure 1 c).
What is the advantage of fuel injection in an SI engine?
Explanation: The main advantage of fuel injection in SI engine is increased volumetric efficiency.
Why can’t we use spark plugs in diesel engine atomizer fuel injection system in gasoline?
The higher the ratio, the more air is compressed, and more of the injected fuel is ignited during combustion. While compression ignition means that diesels don’t require spark plugs, they can come fitted with components called glow plugs.
Why petrol engine has no injector?
This means that in petrol engines, the fuel and air should be pre-mixed, while in diesel engines, mixing happens only during the combustion. Due to this reason diesel engines use a fuel injector while petrol engines use a spark plug. Instead using a carburetor to mix air and fuel these technologies use a fuel injector.
Why fuel injector is used in diesel engine?
Abstract: The purpose of the fuel injection system is to deliver fuel into the engine cylinders, while precisely controlling the injection timing, fuel atomization, and other parameters. The main types of injection systems include pump-line-nozzle, unit injector, and common rail.
How injectors are activated in an engine having group gasoline injection system?
Explanation: In an engine having group gasoline injection system, the injectors are not activated individually, but activated in groups. Explanation: For a group injection system, sensors are used for detecting pressure in the manifold and not speed and coolant. 3.
Why is supercharging not popular with SI engines?
ADVERTISEMENTS: (b) Racer car engines. (4) As the pressure of air increases, temperature of air at the inlet also increases. In order to summarise, supercharging of petrol (SI) engines is not generally used because of more fuel consumption, but is used when more power is to be developed.
What are the disadvantages of a fuel injection system as a fuel metering system?
Some disadvantages are: Possible vapor lock in the steel fuel lines above the engine, making it difficult to start a hot engine, but easily resolved. Fuel must be cleaner as the part are like fine clockwork. The need for fuel return lines to the tank in use, or a separate header tank.
Which factor in the design of combustion chamber to avoid detonation in SI engine is not applicable?
| Q. | Which factor in the design of combustion chamber to avoid knocking and detonation in SI engine is not applicable |
|---|---|
| B. | exhaust valves away from end gas |
| C. | cooling of exhaust valve |
| D. | small bore |
| Answer» a. long flame travel |
Why the air injection system is not used nowadays?
Air Injection System In this Injection system, the fuel will be injected into the cylinder by means of compressed air. This type of fuel injection system is used very less nowadays because of the bulky design of the engine. Since it needs an additional mechanical compressor system.
Why are fuel injectors not used in diesel engines?
Because the fuel is mixed along with air in the carburetor outside the combustion chamber, thus the fuel injectors are not used in these engines. 8 clever moves when you have $1,000 in the bank.
How does a mechanical fuel injector work?
When fuel is sent to mix with air at the air inlet, the pressure of the fuel opens this valve to allow fuel to be squirted. This is the reason why they call mechanical fuel injectors to be spring-loaded injectors.
What is the difference between EFI and additional fuel injectors?
Additional injectors are added to provide fuel to each cylinder of a multi-cylinder engine with any number of cylinders, regardless of whether it is a two-cycle, four-cycle, or rotary engine configuration. To compare, electronic fuel injection (EFI) works with a similar air valve although it may be throttle controlled or controlled electrically.
What happens if fuel is not squirted into the inlet port?
If fuel is not squirted into the inlet port, the valve inside the fuel injector remains closed by virtue of the tension on its spring mechanism. When fuel is sent to mix with air at the air inlet, the pressure of the fuel opens this valve to allow fuel to be squirted.