1. A SUMMER TRAINING REPORT ON
SHRI RAM PISTONS AND RINGS LIMITED, GHAZIABAD
Copyright ROTAX FLYING CLUB 2001 (C)

2. OVERVIEW #Srpl is established in 1972 at ghaziabad(near delhi).
# Today SPRL is india’s largest manufacture of pistons,piston rings,
Valves and gudgeon pin
#5500+ employees are being
Attached with this group
#Company has aim of zero defect
shri ram pistons and rings ltd ghaziabad

3. Copyright ROTAX FLYING CLUB 2001 (C)
WHAT IS PISTON
It is a mechanical device.
It is reciprocates in the cylinder.
It will convert the chemical energy of fuel intomechanical energy .
Its function is to transfer the energy to crankshsft by connecting rod.
Copyright ROTAX FLYING CLUB 2001 (C)

4. Copyright ROTAX FLYING CLUB 2001 (C)

5. Copyright ROTAX FLYING CLUB 2001 (C)
Piston Function
Transfer energy to the crankshaft
Control expansion under warm-up
Chemical energy of fuel is converted in to mechanical energy
Copyright ROTAX FLYING CLUB 2001 (C)

6. TYPES OF PISTONS

7. Copyright ROTAX FLYING CLUB 2001 (C)
Piston Measurements
New pistons are measured at dimension “H”
Used pistons are measured at widest point
Generally it is measured from micrometer
Copyright ROTAX FLYING CLUB 2001 (C)

8. Copyright ROTAX FLYING CLUB 2001 (C)
Piston Design
Pistons are neither cylindrical nor round.
Pistons are made with special materials to control expansion.
Piston rings have special functions and design.
Copyright ROTAX FLYING CLUB 2001 (C)

9. Piston Failure Analysis
2-Stroke Automobile Engines

10. Copyright ROTAX FLYING CLUB 2001 (C)
Normal Pistons
Deposits vary from oil ash, brown, tan, to black/brown. Light color denotes higher cylinder temperatures.
Light scoring is normal, varnish from blow-by gas is normal
Copyright ROTAX FLYING CLUB 2001 (C)

11. Copyright ROTAX FLYING CLUB 2001 (C)
Heat Seizure
Excessive heat, over 1200F/650C EGT
Lean jetting or adjustments on carb
Incorrect loading on propeller allowing excessive RPM
Copyright ROTAX FLYING CLUB 2001 (C)

12. Copyright ROTAX FLYING CLUB 2001 (C)
Lack of Lubrication
Excessive water ingestion causing loss of oil film on intake.
Lack of intake air filter service.
Results in excessive clearance
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13. Copyright ROTAX FLYING CLUB 2001 (C)
Piston Fracture
Complete disassembly required to remove all material
Cause from excessive wear, excessive RPM with no load, excessive clearance fitting.
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14. Copyright ROTAX FLYING CLUB 2001 (C)
Engine valves
Copyright ROTAX FLYING CLUB 2001 (C)

15. What is engine valve………
It is a mechanical element
It is used to admit the fresh air and escaping the burnt gases into the atmosphere .
Two types of valve are in cylinder inlet valve and outlet valve.
These two valves are open and closed alternately
Copyright ROTAX FLYING CLUB 2001 (C)

16. Copyright ROTAX FLYING CLUB 2001 (C)
Types of valve
There are two types of valves are used in automobiles.
Inlet valve –its function is to enter the fresh airmix fuel in engine cylinder.
Outlet valve-its function is to passes the burnt gases in to atmosphere
Copyright ROTAX FLYING CLUB 2001 (C)

17. Copyright ROTAX FLYING CLUB 2001 (C)
Overview
Copyright ROTAX FLYING CLUB 2001 (C)

18. Diff b/w inlet and outlet valves
Inlet valve- not carbon relief arc are used in it.
Upper tip is made of harder material.
Stem part of are dip in NC solution for corrosion resistant.
Copyright ROTAX FLYING CLUB 2001 (C)

19. Copyright ROTAX FLYING CLUB 2001 (C)
Outlet valve
An carbon relief arc (C-ARC)are used in it due to relief of urburnt carbon element.
This type of valve is made of bimetallic element upper tip is made of harder material.
Copyright ROTAX FLYING CLUB 2001 (C)

20. Copyright ROTAX FLYING CLUB 2001 (C)
“JAI SHREE RAM”
THANK… YOU
Copyright ROTAX FLYING CLUB 2001 (C)