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WorksheetsSteering systems 2
Total questions: 70
Worksheet time: 35mins
What are Steering Angles?
The angles at which the wheels of a vehicle are set to steer.
The speed at which a vehicle travels.
The distance between the front and rear wheels of a vehicle.
The weight of a vehicle.
Explain Basic hydraulic Power steering.
A system that uses hydraulic fluid to assist in steering.
A system that uses electric motors to assist in steering.
A system that uses manual force to assist in steering.
A system that uses magnetic fields to assist in steering.
Electric/Hydraulic Power steering is a type of steering system used in vehicles. What does it do?
It assists the driver in steering the vehicle by reducing the effort needed to turn the steering wheel.
It increases the speed of the vehicle.
It controls the braking system of the vehicle.
It enhances the fuel efficiency of the vehicle.
Full Electric Power Steering is a system that:
uses hydraulic fluid to assist steering
relies entirely on electric motors for steering assistance
combines hydraulic and electric systems for steering
is only used in heavy-duty vehicles
How is Steering Fault diagnosis performed?
By visual inspection
Using diagnostic tools
Through test driving
All of the above
What is a requirement for the power assistance arrangement to be 'Fail-safe'?
It must operate without external power.
It must have a backup system.
It must be manually operable.
It must be maintenance-free.
What must the driver be able to retain according to the power assistance arrangement requirements?
The ability to control the vehicle manually
The ability to communicate with passengers
The ability to navigate using GPS
The ability to refuel the vehicle
The degree of assistance in a power assistance arrangement should be proportional to what?
the force applied by the user
the speed of the vehicle
the weight of the vehicle
the type of terrain
How does the system use an engine-driven hydraulic pump?
The system uses it to power the landing gear.
The system uses it to operate the flight controls.
The system uses it to generate electrical power.
The system uses it to manage fuel distribution.
What is the purpose of the pressure switch in the hydraulic steering system?
To regulate the hydraulic fluid flow
To monitor and control the pressure within the system
To provide feedback to the steering wheel
To ensure the system operates at a constant temperature
What type of chamber does the pump rotor sit in inside the pump?
Volute chamber
Diffuser chamber
Centrifugal chamber
Axial chamber
How is the rotor driven in a vane pump?
By an electric motor
By hydraulic pressure
By manual operation
By a belt drive
What are the vanes free to do in the slots of the rotor?
Move radially
Stay fixed
Rotate
Vibrate
As the rotor spins, what happens to the vanes?
The vanes move outward due to centrifugal force.
The vanes remain stationary.
The vanes move inward.
The vanes oscillate back and forth.
What do the sliding vanes create that pressurizes the fluid?
Pressure chamber
Vacuum chamber
Cooling chamber
Heating chamber
The primary function of the torsion bar in most control valves is to:
provide structural support
regulate fluid flow
absorb vibrations
maintain valve position
As the torsion bar twists, it allows the valves to:
open and close
remain static
lock in place
vibrate
The purpose of directing fluid to the appropriate side of the hydraulic ram is to:
increase the speed of the ram
control the direction of movement
reduce the pressure in the system
maintain the temperature of the fluid
What is the advantage of having low input torque needed to operate the steering?
It reduces driver fatigue and makes steering easier.
It increases the vehicle's speed.
It improves fuel efficiency.
It enhances the vehicle's braking system.
How does fluid output being directly proportional to steering speed benefit the steering system?
It ensures smoother and more responsive steering.
It reduces the wear and tear on the steering components.
It increases the fuel efficiency of the vehicle.
It allows for easier parking maneuvers.
Reducing the turns from lock to lock of the steering wheel is beneficial because:
it improves vehicle handling and responsiveness.
it increases the turning radius.
it reduces fuel consumption.
it enhances passenger comfort.
Preventing load from being transferred up the steering column improves steering by:
Reducing driver fatigue
Enhancing vehicle stability
Improving steering precision
All of the above
The impact of reduction in driver fatigue on steering is:
Improved steering control
Decreased steering control
No effect on steering
Increased steering effort
Why is it advantageous to fit larger sectional tyres without increasing steering effort?
Larger tyres provide better grip and stability without affecting steering effort.
Larger tyres reduce the vehicle's weight significantly.
Larger tyres improve fuel efficiency drastically.
Larger tyres enhance the vehicle's aesthetic appeal.
One disadvantage of power steering related to engine power is:
It increases fuel consumption.
It reduces engine power.
It causes engine overheating.
It requires more maintenance.
How does power steering affect fuel consumption compared to a non-PAS vehicle?
Power steering increases fuel consumption.
Power steering decreases fuel consumption.
Power steering has no effect on fuel consumption.
Power steering improves fuel efficiency.
What can happen to the engine if the steering is operated while idling?
The engine may stall
The engine may overheat
The engine may run smoothly
The engine may consume more fuel
Why might power steering be considered expensive?
Due to high manufacturing costs
Because of its complex technology
Because it requires frequent maintenance
All of the above
What is a potential issue with power steering systems related to leaks?
Loss of steering control
Increased fuel efficiency
Improved steering response
Reduced tire wear
Why might more complex diagnostic procedures be needed for power steering systems?
Because they are more reliable
Because they are more complex
Because they are less efficient
Because they are more expensive
The purpose of using an electric pump in the hydraulic power assisted steering system is to:
increase fuel efficiency
reduce steering effort
enhance vehicle speed
improve braking performance
How does the electric pump affect the engine load in the hydraulic power assisted steering system?
It increases the engine load.
It decreases the engine load.
It has no effect on the engine load.
It stabilizes the engine load.
True or False: The hydraulic pressure in the system is fed to a control valve.
True
False
The effect of the electric pump on the battery and alternator is:
It increases the load on both the battery and alternator.
It decreases the load on both the battery and alternator.
It has no effect on the battery and alternator.
It only affects the alternator.
What is the operating principle of a full electric power steering system?
Power is used continuously
Power is used only when required
Power is used when the engine is off
Power is used when the vehicle is stationary
Fill in the blank: Unlike a hydraulic power steering mechanism, the power in a full electric power steering system is used only when ________.
required (when the driver moves the steering wheel)
the vehicle is stationary
the engine is off
the brakes are applied
How does the electric power steering system interact with the vehicle's engine?
It takes current from the battery
It takes current from the alternator
It takes current from the engine directly
It does not take any current
Fill in the blank: Less power is used in a full electric power steering system compared to ________.
hydraulic power steering
manual steering
semi-electric power steering
rack and pinion steering
Fill in the blank: The electric power steering system includes a steering mechanism and normal manual steering combined with a ________.
a motor
a battery
a hydraulic pump
a gear box
The operating principle of electric power steering is based on:
hydraulic systems
electric motors
pneumatic systems
mechanical linkages
What provides the assistance torque in electric power steering?
The electric motor
The hydraulic pump
The steering column
The battery
How is the torque transmitted to the steering rack in a full electric steering system?
By a reduction gear
By a hydraulic pump
By a direct drive
By a belt drive
What is the ratio of the reduction gear used in the full electric steering system?
1:10
1:15
1:20
1:25
The force exerted by the driver on the steering wheel is transmitted mechanically to the rack via the _______.
pinion
gearbox
axle
belt
In a full electric steering system, the driver's torque is measured by a sensor and sent to the _______.
power steering ECU
engine control unit
brake control module
transmission control unit
The function of the torque sensor in a vehicle is to:
measure the rotational force applied to the engine or drivetrain
control the speed of the vehicle
monitor the fuel efficiency
adjust the suspension system
Where is the torque sensor fitted in a vehicle?
In the engine compartment
On the transmission
Near the brake pedal
Inside the fuel tank
The torque sensor determines:
the speed of the vehicle
the force applied to the pedal
the battery level
the temperature of the engine
True or False: The torque sensor permanently measures the torque applied to the steering wheel by the driver.
True
False
True or False: This steering system uses a steering wheel angle sensor.
True
False
The three parts of the torque sensor are:
Rotor, Stator, and Housing
Sensor, Processor, and Output
Input, Output, and Feedback
Coil, Magnet, and Circuit
The function of the mechanical part of the torque sensor is to:
measure rotational force
control temperature
detect light
transmit sound
The electronic part of the sensor converts angular position information into torque information using the principle that the angular distortion is proportional to the steering wheel torque. True or False?
True
False
What limits the angular deflection to +/- 4.5° in the torque sensor?
The mechanical stop
The electronic control system
The sensor's calibration
The material properties
The angular deflection between the input shaft and the output shaft is proportional to the torque applied by the driver. True or False?
True
False
The purpose of the torque sensor's second detection stage is to:
measure rotational speed
detect angular displacement
provide additional accuracy
monitor temperature changes
Which component of the torque sensor transmits electrical reference information regardless of the surrounding conditions?
Strain gauge
Rotary encoder
Slip ring
Load cell
What is the characteristic of the reference coil (detection ring 1) in the torque sensor?
It measures angular displacement.
It detects changes in magnetic field.
It provides a constant reference signal.
It adjusts the torque output.
What does the ECU supply to the motor depending on inputs from steering wheel torque vehicle speed sensors?
Power
Fuel
Lubricant
Coolant
Where can the steering ECU be mounted according to the diagram?
Under the dashboard
In the engine compartment
Near the steering column
In the trunk
What is the ECU function at zero speed (less than 7 kph)?
Maximum assistance, controlled by torque sensor only
Variable assistance, controlled by vehicle speed
No assistance, controlled by driver input
At what speed range does the ECU provide variable assistance controlled by both torque sensor and vehicle speed?
0-7 kph
8-152 kph
Above 152 kph
What type of motors are generally used for electric steering?
Alternating current motors
Direct current brush motors
Induction motors
Synchronous motors
What is the typical power output range for motors used in small vehicles?
10-20 A
30-60 A
65-75 A
80-100 A
Fill in the blank: Two conditions must be satisfied for the motor to operate: The battery voltage must be greater than ___ volts, and the engine speed greater than 285 rpm.
9
6
12
15
What does the ECU do to prevent the assistance motor from overheating?
Increases the current
Limits the assistance progressively
Shuts down the motor
Increases the motor speed
What is the power output range for motors used in larger vehicles?
10-20 A
30-60 A
65-75 A
80-100 A
What is the main function of the EPS Control Module in the Electric Power Steering system?
To provide hydraulic assistance to the steering system
To control the electric motor that provides steering assistance
To monitor the vehicle's speed and adjust steering accordingly
To manage the battery power distribution in the vehicle
Identify the component labeled 'M' in the EPS system diagram.
Motor
Sensor
Controller
Valve
In the EPS system wiring diagram, the 'CPU' in the EPS Control Module controls:
the power supply
the steering angle sensor
the motor
the communication interface
