ANTI-LOCKING BRAKING SYSTEM TRAINER

ANTI-LOCKING BRAKING SYSTEM TRAINER Description and Specifications for Lab Tenders

The trainer should be designed to demonstrate the theory and operating characteristics of today’s modern braking systems ANTI-LOCKING BRAKING SYSTEM TRAINER, AUTOMOTIVE LAB.

ABS system of various types are being included on newer vehicles as it greatly improves the control of the driver during braking, which feature computer controlled anti-locking or skid-control systems. The unit should consist of original automotive ABS braking components, which should be mounted onto an integrated floor stand, made from powder coated electro galvanized steel, that are mounted onto wheels for mobility. A color coded schematic chart, under a lexon polycarbonate protective screen, of the ABS system and circuit’s, should also be mounted onto the trainer for reference

Specifications:

1. The trainer should consist of a complete, fully operational, ABS unit which is typically found on passenger vehicles. The trainer should have the following specifications:

·         Four rotating wheels with wheel sensors

·         Four variable speed electrical drive system for each wheel to control the individual speed of each wheel

·         Master brake cylinder with pedal handle

·         ABS hydraulic actuator (modulator) unit which is controlled by the on-board computer system (ECU)

·         Five brake line pressure gauge to show the pressure differentials from the meter brake cylinder to the individual wheels

·         Brake master cylinder with vacuum assist boost mechanism and brake pedal assembly.

·         The front of the trainer features precise schematic color graphic illustrations that clearly explain the operation of the entire ABS and braking system.

·         A control Panel should be provided with an on/off power switch, power system light (POWER ON), ABS warning light (indicated problems) and an ABS operational light (ABS ON).  Also has Volt and Ampere meters to measure the DC input power and a brake light to show the operation of the braking system just as on the vehicle.

·         Road Conditions and Performance Display Panel.

·         The trainer should come complete with a training course on ABS operation and servicing including student job sheets and a technical manual on ABS systems

2. Modules:

·         The trainer should be developed not only to be just a simulator but the ABS system is fully functional, featuring a real ABS unit and real brake systems which makes it ideal for student observation, experimentation and also trouble shooting.

·         Different friction values could be set for each wheel to simulate variable road conditions.

·         Control of the braking action could be observed with either the ABS unit on or off.

·         ABS unit should be clearly laid out on a display board that is mounted on a mobile trolley.

3. Electronic/Electrical Fault Insertion System:

·         Multiple electronic fault insertion system: This system should allow for up to 10 faults to be inserted at any one time. Faults can be inserted individually or in groups.

·         Electronic Fault Panel:  Faults indicated by LEDs.  When the fault is electronically activated a corresponding LED will illuminate showing the fault is active.

·         Student Testing Mode:  The LED fault indication display can be deactivated, so that the faults can be active but the display is switched off.

·         Electronic Fault Reset Button:  The LED control should have a fault-reset button that will clear and reset the system back to normal.

·         Test Points:  The trainer should have short circuit protected test points that allow the student to take measurements during the troubleshooting exercises.

4. Included Accessories:

·         30A, 12 VDC regulated power supply

·         Vacuum pump for power brake boost

·         Fault system with 10 electrical faults and Electrical Test point

Educational Objectives:

·         Basic Theory;

·         Braking System and System Components

·         Anti-Lock Braking System (ABS) and Components

·         Common questions about ABS

·         Normal Braking System;

·         To explain how a normal braking system works (without ABS).

·         To understand the working principles of main braking components such as brake booster, brake master cylinder, and brake fluids.

·         ABS Modulator;

·         To explain how an ABS modulator in ABS system works.

·         To understand the meaning of pressure increase, pressure holding and pressure reduction in the ABS hydraulic modulator.

·         ABS Wheel Speed Sensor;

·         Be able to explain how the wheel speed sensor in ABS system works.

·         ABS Control Unit; Be able to explain the function of the ABS Control Unit.

·         ABS Model Vehicle for Braking Algorithm;

·         Be able to understand the calculation and physics formulas used in ABS analysis and the algorithm used by the ABS controller to control an ABS brake system.

·         Sudden Braking with and without ABS;

·         Able to explain the function of ABS in preventing the rapid deceleration, that is caused by sudden braking or panic braking.

·         Braking on Various Road res;

·         Able to explain the behavior of ABS, when braking on Dry Asphalt roads, Wet Asphalt Roads and Icy /Snowy Asphalt Road surfaces.

·         Response of the ABS Modulator when ABS Control Detects Decreasing Wheel

·         Speed During Braking;

·         To understand how the ABS modulator reacts when the wheels change the speed, as the result of braking. And to observe the pressure changing characteristics, on each wheel during braking

·         ABS Warning Light and Self-Diagnostic Function;

·         To use the ABS Self-Diagnostic function.

·         To understand the diagnose code from the ABS warning light

·         Troubleshooting ABS Wheel Sensors

·         To use the ABS Self Diagnostic function for troubleshooting the wheel sensor problems and to measure the signal from the wheel sensor.

·         Troubleshooting the Valve Relay

·         To use the ABS Self Diagnostic function for troubleshooting the valve relay problem and to measure the signal at the solenoid valve

·         Troubleshooting the ABS Motor Relay

·         Should be able to use the ABS Self-Diagnostic function for troubleshooting the ABS motor relay problem.

·         Troubleshooting ABS Control Components

·         Should be able to understand the functions of the ABS control components such as brake switch, ABS warning light, and ABS switch

To come complete with comprehensive courseware,

operational manual and student job sheets

which provide detailed exercises.