Page 37 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

EXERCISE 2.4: Measure the cubic capacity of an engine

Objectives

At the end of this exercise you shall be able to
• calculate the cubic capacity of an engine
• calcuate the compression ratio of an engine.

Requirements

Tools/Instruments

• Mechanic tool kit • Vacuum cleaner
• Dial gauge with magnetic base • Air Compressor
• Vernier gauge Materials
• Flat Scrapper
• Telescopic gauge • Cotton waste - as reqd.
• Inside micrometer • Cotton cloth - as reqd.
• Emery sheet fine
Equipments/Machines
• Cylinder bore gauge
• Multi cylinder diesel engine

Procedure

1 Clean the engine outside with compressed air and cotten waste.
2 Remove the battery terminals connected to the Engine.
3 Remove the fuel line, coolant line and other electrical connections to the engine.
4 Remove the air filter assembly.

5 Remove the water pump/alternator belt.
6 Remove the valve cover.
7 Remove the cylinder head bolts .
8 Remove the crank shaft pulley.

9 Remove the timing cover.
10 Remove the timing belt.
11 Remove the cylinder head.

Note: Follow the instructions of available engine Service manual for removal of cylinder head.

12 Clean the cylinder bore and piston head of each cylinder.

13 Remove the carbon deposits and wipe with clean cloths.
14 Use vernier depth gauge, measure the stroke length, when the piston is at B.D.C. That is, measure the
distance between cylinder Top to piston head when the piston is at B.D.C.

15 Note down the reading of stroke length.
16 Use cylinder telescopic gauge inside micrometer cylinder bore gauge, measure the cylinder bore diameter.
17 Calculate the cubic capacity of an engine using the following formula
Cubic capacity = p/4 x (D)² x L x N
Where, CC = Cubic capacity in cm

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