muhammad jawhar

1. 1
Lane Test
Student Name: Muhammad Jawhar Anwar
Class: Fourth Stage A
Lab Name: Automotive
Exp No: 1
Department: Mechanical & Mechatronics
College of Engineering
Salahaddin University-Erbil
Academic Year 2021-2022

2. 2
We work about three main object to test car:-
 Roller brake tester
 Suspension tester
 Side slip tester
And we results in this test one of suspension is bad, and brake is good .
Roller brake tester
The large-size rollers with innovative silica-granule added resin coating
ensure perfect grip in all test conditions and safeguard tyre wear. The low
test speed and the contra-rotation option with adequate slip control make
the unit suitable for vehicles with ABS braking systems and permanent 4-
wheel drive.
These units are suitable for testing:
• Single wheel drag
• Brake ovality (out-of-roundness) on single wheels and percentage
difference
• Maximum brake force on single wheel,on axle and total
• Maximum percentage imbalance of brake force
• Total percentage efficiency of braking system

3. 3
• Percentage efficiency of handbrake
• Braking capacity split between front and rear axles
• Axle weight (in complete weighing system configuration)
• Pedal pressure (in complete pedal pressure measurer configuration,
optional)
Suspension tester
The BURT202 vibration suspension tester is intended for determining the
degree of motor-vehicle suspension efficiency by measuring grip using the
EUSAMA method.
This is based on an analysis of the force pattern transmitted by the tyre to
the test plate during the vibration test, giving a value 100 to the static
weight and measuring the force change percentage during the vibration
cycle, with the suspension acting as a damper.The grip measurement
reading indicates the capacity of the suspension to maintain wheel-road
surface contact in the most critical conditions.
These units are suitable for testing:
• Weight of the single wheels and axle
• Percentage grip of single wheels
• Grip percentage difference on the wheels of a single axle

4. 4
Side slip tester
This unit consists of a measurement plate and a relaxation plate and ensures
quick control of wheel alignment to determine any need for a more precise
checkup on electronic wheel alignment equipment.
This drive-over test determines the side slip of the wheel, by which is
meant the side movement compared to an ideal straight course over a
distance of 1 km.
The purpose of the relaxation plate is to release any side forces already
acting on the wheels, thereby ensuring the reliability and reproducibility of
results.

5. 5
Disscusion
1- Discuss briefly the suspension system in the cars in general (parts-
functions)
The suspension system on your vehicle consists of the following parts:
 These are the only part of the suspension system that touches the
ground.
 Coil springs. These are the part that absorbs the impact when a
vehicle hits a bump in the road.
Shock absorbers. Sometimes called the shocks or dampers, this part
supports the coil spring to further reduce the impact of a bump or pothole.
Rods/linkages. These parts work together to link different parts of the
suspension system together.
Joints/bearings/bushings. These parts allow certain components of the
suspension system to make sliding actions.
Some vehicles do not have shock absorbers. Instead, these vehicles come
with struts. A strut is similar to a shock absorber, as it provides support for
the suspension as well as the coil springs.
The steering system is also important as it works with the entire suspension
system to make the car turn. The entire suspension system sits on top of the
vehicle’s frame, which carries the weight of the vehicle.

6. 6
2- Discuss briefly the brake system in the cars in general (parts – functions)
1. A brake system helps to stop vehicles within the smallest possible
distance. This is achieved by converting the kinetic energy of the
vehicle into heat energy.
2. It also functions on a mechanical device where motion occurs, the
brake is applied to stop it within a short period of time.
Brake pedal: the component of a brake system is used to activate the brake
by pressing it down by foot. It’s located in the middle of the accelerator and
clutch pedal inside the vehicle.
Fluid reservoir: The fluid reservoir is the housing where the brake fluid or
brake oil is store.
Fluid lines: The fluid lines are the pipes through which the brake fluid
flows in the vehicle.
Brake pads: The brake pad is a steel backing plate employed on disc
brakes. It’s often made of ceramic, metal, or other hard-wearing composite
materials.
Brake shoes: Brake shoes are two pieces of sheet steel joined together so it
can carry the brake lining.
Brake drum: The brake drum is a rotating drum-shaped component used in
the drum brake system.
Rotor: The rotor is a cast-iron brake disc connected to a wheel or axle,
sometimes made of reinforced carbon-carbon, ceramic matric, or some
other composite.
Brake lining: A brake lining is a heat-resistant, soft but also tough material
with high friction characteristics. It’s enclosed inside the brake shoe.