Page 143 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

• Injector
• Bypass valve
• Timer

• Hand operated pump
• Governor
• Injection pump
• Bypass line
• Filter

• Diesel tank

Importance of testing of fuel feed pumps, FIP and injectors

Objectives: At the end of this lesson you shall be able to
• explain Importance of testing of fuel feed pumps
• importance of testing of fuel FIP
• explain Importance of testing of fuel Injector.

Introduction
Air inside the diesel engine through inlet valve is compressed in cylinder. In compression stroke due to high
compression ratio the pressure and temperature increase and when piston is just to reach on compression stroke,
then by injectors diesel spray applied in combustion chamber which is in atomized form. Compressed air and
atomized diesel ignited with the diesel inject and get power stroke, for this big process done in Diesel I.C Engine
but for these process also need another system process for these system need work as diesel fuel supply system.
In these system include major three parts and its name is FIP, Injectors, Feed pump.

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CITS : Automotive - Mechanic Diesel - Lesson 31 - 38