Q..Discuss about the unequal double wishbone system.


Unequal Double Wishbone System

Wishbones may be parallel and equal to
avoid the undesirable steering clothes and of t
two wishbones were made unequal desperate
upper wishbone is made shorter that the whs
remain upbeat have a slight lean itr warda. Akothee
angle did change while the wheel moved op down. The
track length remained more or less costat


1.It gives better cornering characteristics
policy towards, the outside wol which is
ad and exerts higher cornering power of the twp
remains more or less at right angles (road surface
2.Although light change in camber this place
track length remained constant. This was found to be
better for type life
In this suspension system, when coil spring with
telescopic damper is used.they are installed  some vehicles, the springs and dampers are mounted


Q..Explain clearly the requirements of
automobile brakes. Explain transfer of wel
during application. Discuss how it affects
wheel skidding.


Requirements of Automobile Brakes

1.The automobile brakes should be able to say te
vehicle in shortest distance.

2.would be smooth retardation and should be fe
sona record
3.The nine of retardation should be proportional to
podal effort.
4.It should be less wear and tear.                                                            bed be able to property is all weather
5.The life of automobile brakes stolh be moe

Transfer of Wet and its Effect on Wheels

When the best to generally traded from rear wheels to the food web
Even though the brakes are applied, the vehicle moves in the forward direction due to the mass tendency.
When the vehicle is in stationary position, the effect
of weight on the rear wheels decreases while the effect on
front wheels increases by the same amount, since the brakes
are designed such that the load applied on front wheels is
more as compared to the rear wheels.


Q.. Discuss clearly the different classification of
brake systems.



Classification of Brakes

The automobile brakes are classified as,

1.With respect to the number of wheels,
(a) Two-wheel brakes
(b) Four-wheel brakes.

2.With respect to the method of braking contact,
(a) Internal expanding brakes
(b) External contracting brakes.

3.With respect of application,
(a) Foot brake
(b) Hand brake.

4.With respect to the method of applying the braking
(a)Single acting brakes
(b) Double acting brakes:

5.With respect to the brake ged
(a) Mechanical brakes
(b) Power brakes.

6.With respect to the nature of power employed,
(a) Vacuum brakes

(b) Air brakes
(c) Hydraulic brakes
(d) Hydrostatic brakes
(e) Electric brakes.

7.With respect to power transmission,
(a) Direct acting brakes
(b) Geared brakes.

8.With respect to power unit,
Cylindrical brakes
Diaphragm brakes

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