IC ENGINE

1. CAREER POINT
UNIVERSITY
MAJOR ASSIGNMENT
PRESENTATION ON
NITRO SHOCK ABSORBER
• PRESENTED BY:
• AAFTAB ALAM
• UID-K10870
• BRANCH-MECHANICAL
• SEM/YEAR-6th/3rd
• PRESENTED TO:
• MR.AMARDEEP KUMAR
Assistance Proff.Of
Mechanical Deptt.

2. TABLE OF CONTENT
• INTRODUCTION
• PRINCIPLE
• NEED FOR NITRO SHOCK ABSORBER
• WHY GAS FILLED
• GAS FILLED SHOCK
• COMPONENT
• WORKING
• ADVANTAGE
• TIPS BEFORE MOUNTING
• CONCLUSION
• REFERENCE

3. INTRODUCTION
• A nitro shock absorber is basically
a hydraulic damping mechanism for
controlling spring vibrations.
• It controls spring movements in
both directions: when the spring is
compressed and when it is
extended.
• The amount of resistance needed in
each direction is determined by the
type of vehicle, the type of
suspension.
• Shock absorbers are a critical
product that determines an
automobile's character
• It not only by improving ride quality
but also by functioning to control
the attitude and stability of the
automobile body.

5. PRINCIPLE OF OPERATION
• The damping mechanism of a shock absorber is
viscous damping.
• Viscosity is the property of a fluid by virtue of which
it offers resistance to the motion of one layer over
the adjacent on.
• The main components of a viscous damper are
cylinder, piston and viscous fluid.
• There is a clearance between the cylinder walls and
the piston.
• More the clearance more will be the velocity of the
piston in the viscous fluid and it will offer less value
of viscous damping coefficient.

6. NEED FOR NITRO SHOCK
ABSORBER
• Springs alone cannot provide a satisfactorily
smooth ride.
• Oscillation of spring causes the wheel to
rebound, or bounce up and down.
• Control over the vehicle can be lost.
• Shock absorbers prevent these spring
oscillations.

7. WHY GAS FILLED SHOCKS?
• Rapid movement of the fluid between the
chambers cause foaming.
• Results in a lag because the piston moves
through an air pocket which offers resistance.
• Foaming results in a decrease of damping and
a loss of spring control.
• Pressure increases in front of the piston and
drops behind it.
• All together results in foaming and loss of
shock absorber control.

8. GAS FILLED SHOCKS
• Designed to reduce foaming of the oil.
• Construction is similar except the double
tube, here a dividing piston is used.
• Two chambers – oil & gas.

9. COMPONENT
• Upper and lower
mounts.
• Hydraulic chamber
containing hydraulic
fluid.
• Gas chamber
containing nitrogen
at
25 bars.
• Dividing piston.

10. WORKING
• The piston rod is moved into the shock
absorber which displaces the oil.
• This causes the dividing piston to press on the
gas chamber, reducing it in size.
• While returning the gas pressure returns the
dividing piston to its initial position.
• The pressure decrease behind the working
piston cannot be high for the gas to exit from
the oil column.
• Thus the gas filled shock absorber operates
without foaming.

11. ADVANTAGES
• Instantaneous response.
• Better fade resistance.
• Better durability.
• No need for re-adjustment.

12. TIPS BEFORE MOUNTING
• Avoid stiff suspensions.
• Avoid new shocks to compensate for old and
tired springs.
• Worn shocks reduce safety and handling.
• The best advice come from a mechanic who
knows your vehicle.

13. CONCLUSION
• In current scenario of automobile industry
the need for vehicles which provide smooth
and comfort ride is growing.Nitro shock
absorber are design to be ultimate in
performance and comfort.In a country like
our whose roads are not upto world
standards the need for automotive
component like nitro shock are necessary.

14. REFERENCE
• GOOGLE
• WIKIPEDIA
• WWW.SEMINAR.COM