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IC Engine Practice Test: Mechanical Injection Systems
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Mechanical Injection Systems topics include: Injection systems and pumps, fuel injector, nozzle and fuel injection in si engine.
 

In a mechanical system, the fuel charge is accurately metered and pressurised by the fuel injection pump and passed to the high-pressure injectors via pipes before being sprayed into the combustion chamber, where it ignites. The resulting combustion gasses then drive the piston down to produce the power stroke.

Related Test: IC Engine Practice Test: Carburetion

IC Engine Practice Test: Mechanical Injection Systems
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25 Questions

1. _____________ the injection pressure better the dispersion and penetration of the fuel into all the desired locations in combustion chamber.
2. If the engine is at rest and the lever controlling the engine speed is released, the spring will force the control to reach its ______________ position.
3. What are the usual types of diesel injectors?
4. Which is the most accurate gasoline injection system?
5. Solid injection is also called ________________
6. What is the advantage of fuel injection in an SI engine?
7. In a single hole nozzle, the spray cone angle varies from ___________
8. If one or more nozzles are not spraying correctly then ________________ occurs.
9. When the mechanical governor is running on ‘no load’ position ___________
10. For proper lubrication between the nozzle valve and its guide a small quantity of fuel is allowed to leak through the clearance.
11. Fuel is injected into the cylinder at the end of ______________ stroke.
12. Removal of air from the pipeline is termed as ____________ in injection system.
13. If the density of compressed air in the combustion chamber is ____________ then the resistance to the movement of the droplets is higher.
14. The injector assembly consists of ___________
15. When the fuel is supplied by the injection pump, it exerts sufficient force against the spring to lift the ___________
16. What is the advantage of an air injection system?
17. Fuel is injected in a four-stroke CI engine ___________
18. The driver’s foot accelerator controls the intermediate _____________ of the engine.
19. Which of the following is a commonly used injection system in automobiles?
20. When the engine speed tends to exceed the limit the _____________ fly apart.
21. Fuel filters do not use generally ___________
22. What is the disadvantage of petrol injection?
23. Bosh fuel injection pump is an example of _______________ type fuel injector pump.
24. The ___________ type injection pump consist of a reciprocating plunger inside a barrel.
25. In a _____________ type of injection pump, the fuel is distributed to each cylinder by means of a rotor.

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