Which of the following components in the exhaust system helps in the reduction of exhaust emissions?
In general, the exhaust system includes the following components: Aftertreatment devices (catalytic converters, particulate filters) to reduce emissions of pollutants, Mufflers, which provide noise attenuation, Decoupling elements, which connect the exhaust manifold with the rest of the exhaust system.
What are the components of an exhaust system?
The major components of the exhaust system include the exhaust manifold(s), oxygen sensors, catalytic converter(s), resonator, exhaust pipes, muffler, and tailpipe. The exhaust manifold is connected directly to the engine and has the job of harnessing the combustion gases into the exhaust system.
What can be used to check for a restricted exhaust system?
1. Visual inspection: Check for a pinched or kinked exhaust pipe, physical damage to the insulator or converter shell, cracked or broken seams, excessive rust, or a plugged tailpipe. 2. Rattle test: Gently strike the center of the converter with a rubber mallet.
Which component in the exhaust system reduces the acoustic pressure caused by exhaust?
Resonators
What is used in engine to reduce the noise at the exhaust?
Muffler, also called silencer, device through which the exhaust gases from an internal-combustion engine are passed to attenuate (reduce) the airborne noise of the engine.
What is used in engines to reduce the noise at the exhaust Mcq?
What is used in engines to reduce the noise at the exhaust? Explanation: Engine sound during operation may be transmitted back through the air intake systems to the outside air. In such cases a silencer is provided between the engine and the intake. It is a light weight steel pipe.
What is the use of the lambda sensor in the catalytic converter Mcq?
What is the use of the lambda sensors in the catalytic converter? Explanation: In catalytic convertor, the lambda sensors are used to keep excess air ratio within a range. The catalytic converter is the emission control device. 3.
What is the range of pressure is achieved in the injection pump?
What is the range of pressure is achieved in the injection pump? Explanation: The purpose of the fuel injection pump is to increase the pressure of the quantity of fuel in the range of 120 – 200 bars and deliver it at the correct instant to the injector.
Which of the following is the most widely used fuel supply system?
pump system
Which type of supercharger is used at low speeds?
Centrifugal type supercharger
What are the types of multi point fuel injection system?
The MPFI is a system or method of injecting fuel into internal combustion engine through multi ports situated on intake valve of each cylinder. It delivers an exact quantity of fuel in each cylinder at the right time. There are three types of MPFI systems – Batched, Simultaneous and Sequential.
Which of the following does not depend on the fuel quantity injected?
7. Which of the following does not depend on the fuel quantity injected? Explanation: The fuel is injected in the engine combustion chamber by the injection nozzle of an injector controlled by a solenoid-operated valve. The injector receives its operation signal from ECU.
What are three types of fuel injection systems?
The three major types of fuel injection are known as throttle body injection, multiport injection, and direct injection.
What is the function of fuel injection system?
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.
What are the components of a fuel injection system?
Abstract: The fuel injection system can be divided into low-pressure and high-pressure sides. The low-pressure components include the fuel tank, fuel supply pump and fuel filter. The high-pressure side components include a high pressure pump, accumulator, fuel injector and fuel injector nozzle.
What are the two basic types of fuel injection systems?
There are two basic types of fuel injection systems used on passenger cars and light trucks, multiport fuel injection and throttle body fuel injection.
What are the requirements of fuel injection system?
Functional requirements of a fuel injection system
- Accurate metering of the fuel injected per cycle.
- Correct fuel injection timing.
- Full control over rate of fuel injection.
- Proper atomisation of the fuel.
- Proper spray pattern to ensure mixing of air and fuel.
- Uniform distribution of fuel in the combustion chamber.
What are the types of fuel system?
The fuel injection types used in newer cars include four basic types:
- Single-point or throttle body injection.
- Port or multipoint fuel injection.
- Sequential fuel injection.
- Direct injection.
How do you diagnose a fuel system problem?
A fuel system should be carefully tested for pressure, volume, and electrical integrity before condemning the fuel pump. Often the first step in diagnosing a faulty fuel system is to simply listen. Turn the ignition key to the run position and carefully listen for a slight humming sound coming from the fuel tank.
Which fuel injection system is best?
Best Aftermarket EFI Systems Reviews & Recommendations 2020
- Best Overall. New Holley Sniper 550511 EFI Kit. Check Latest Price.
- Best Value. FiTech 30021 Go EFI System. Check Latest Price.
- Honorable Mention. MSD 2900 Atomic EFI Master Kit. Check Latest Price.
How many types of fuel pumps are there?
two
What causes high pressure fuel pump failure?
Poor quality of oil. Using oil types that are different from the recommendations of the manufacturer may also trigger the high pressure fuel pump to fail. This is because the quality of oil may affect the rate of wear in the fuel pump.
What are the three most commonly used pump designs?
There are three basic types of pumps: positive-displacement, centrifugal and axial-flow pumps. In centrifugal pumps the direction of flow of the fluid changes by ninety degrees as it flows over impeller, while in axial flow pumps the direction of flow is unchanged.
On which fuel does the pump run?
Located in the fuel tank, your fuel pump moves gas from the gasoline tank to the engine. The pump creates the pressure needed to move gas from the fuel lines to the engine.
Does a fuel pump stay on all the time?
The fuel pump runs continuously once the engine starts, and continues to run as long as the engine is running and the ignition key is on. The pump may run at a constant speed, or it may operate at a variable speed depending on engine load and speed.
How expensive is it to replace a fuel pump?
The average cost for a fuel pump replacement is between $220 and $1,062 depending on vehicle and age. Labor costs are estimated between $124 and $260, while parts are priced between $95 and $854.
How much pressure should a fuel pump have?
Engines with fuel injection will normally use electric fuel pumps to supply the higher pressure demanded by the system. With port injection, the required pressure ranges from 45 psi to 66 psi. On throttle body injection (TBI) systems, the pressure is normally between 9 psi to 18 psi.
What are the symptoms of low fuel pressure?
Low fuel pressure can lead to engine misfires, low acceleration, rough idles, and engine stalls. If your check engine light is on and your car has been stalling out, you may have a fuel pump failure.
How do you fix fuel pressure?
How it’s done:
- Scan the computer system in the car for trouble codes.
- Inspect fuel pressure regulator for leakage and proper operation.
- Inspect for any broken vacuum lines.
- Remove and replace fuel pressure regulator if it is bad.
- Change the engine oil and filter if the oil is found to be contaminated.
What happens if fuel pressure is too high?
Too high of pressure may result in over fueling of the engine. As a result, This can lead to a rough running engine; poor fuel mileage, and black smoke coming from the exhaust. If your regulator is going bad, your car could display several different symptoms.