Chapter Four ABS Training
4.1 What is ABS?
Anti-Lock Brake System (ABS) is a combination of vehicle hardware and software that work together to maintain steering control and vehicle stability during hard braking. Initially developed as a special option for topof-the-line models, today’s ABS units are compact, easy to service, inexpensive and widely available. Now every major automotive manufacturer offers some form of ABS vehicle control that provides safe, maximum braking under all weather conditions and road surfaces.
"FULL"
Fig. 1
Integral. INTEGRAL systems incorporate the power unit (pump and accumulator), master cylinder, and control valve mechanism into one hydraulic unit. An external microprocessor and individual wheel sensors
…show more content…
The ABS components include wheel speed sensors, an electronic control module, and a hydraulic modulator assembly that includes electrically-operated solenoid valves.
THE HEART OF THE SYSTEM
Everything starts with the wheel speed sensors. Wheel sensors consist of a magnetic pickup and a toothed sensor ring or a slotted collar. In some applications, the sensor is an integral part of the wheel bearing and hub assembly. In others, the sensor ring(s) may be mounted on the axle hub behind the brake rotor, on the brake rotor itself, inside the brake drum, on the transmission
YOU CAN DO IT!
Many repair technicians are turning away ABS equipped vehicles because they perceive these systems as too complex, too tough to diagnose, or requiring special tools and repair skills. What these technicians don’t realize is that the same brake components they’ve worked on for years still do the job of stopping the vehicle. It’s simply the addition of the ABS unit and its components that make the system special. Service technicians had the same reaction when ECM controlled vehicles first appeared. What we quickly learned was that 80% of the driveability problems were still engine related. The same will hold true for ABS systems. Proper training to recognize and understand the differences between ABS systems and how they function will be necessary, and some special test equipment and
In this report a comparison of three Braking systems; Calliper, Drum and Disc will be made on a variety of areas including –
In a little over hundred years since automobile took hold of most people’s imagination, technologies design to make acceleration faster and reaching higher speeds have evolved. Despite charges, turbo charges, twin turbo charges or NOX, there are limits, which cannot be greater by land-based vehicle in terms of speed. Not the same can be said about the rather unseen parts of the automotive evolution. The only limitation to them is in connection with the human body ‘s ability to withstand rapid decelerations. It would be a lot easier to stop a car then to make it go faster otherwise. Whether they come in form of drum brakes or as disk, the brakes have been the horsepower’s companions throughout decades, each pulling
Introduction: I. Attention Statement – (Picture of the highway.) How many of you drive? Who took the highway today to get to school? II. Topic – Today I want to talk about Ralph Teetor and his invention of Cruise Control.
witch You watch and see how many times it spins around and the amount of time it spins in a minute is the measurement or speed of
Most car owners don’t know much about their brakes, except that they stop their car when they step on them. That’s why it’s important to leave car repair and maintenance in the hands of the professionals at Foley Tire & Auto in Foley, AL! Now that it’s winter, you need your car to be safe and reliable, so bring your car into Foley Tire & Auto to get your brakes inspected.
Have you noticed gear oil leaking from your vehicle’s rear wheel? Is there are a roaring noise? Have you ever wondered how difficult it could be to replace the rear axle bearing and seal? Well, then you certainly need to replace it with the best. With a team of certified online professionals, Brake Needs offers high quality rear axle bearing at the best price. Before you replace the rear axle bearings, you should know a few things.
The article describes three formats of in-vehicle feedback; visual, haptic, and audio. Each of the three formats to be broke down into various systems and functions. Very similar to a database containing tables, rows, and attributes. In the visual table, there are four rows one of which is the dashboard. The dashboard contains several aids including gauges, on-board diagnostics, GPS, and lamps. The haptic table contains the break/ throttle row, were pedal pulsation will notify the operator of activated antilock-brakes or traction control. Jensen
Brembo brakes which offer excellent stopping power, and in my opinion is one of the best brake companies in the world.
The device " is specifically designed to protect against the swerving actions inherent in hyper-sensitive vehicles of this type," says the document.
a skid. But it is firm, continuous brake pressure that is required to activate anti-locks, which
Brake calipers – The brake calipers clamp the brake pad to the rotor, and that makes the vehicle wheels stop turning. These parts can wear out and can start to stick. We have replacement calipers, pads and rotors.
The tire slippage measurement signal, critical for controller performance, is both highly uncertain and noisy
Actuator coverts the controller command signal into change in physical parameter. It is also referred to as transducer as it converts one type of physical quantity into another type.
For drum brakes they use special iron and this iron should be heat conductive. This work while rear wheels of vehicle rotate. Drum brakes can only applies in rear wheels of vehicles. Drum brakes helpful for making friction and when driver applies brakes then friction work. This friction helpful for slow down the wheel. This brake system has one problem that it produces too much heat in the friction area. Some drum brakes system use 2 wheel cylinders and each cylinder has one piston. In both cylinders they
This section identifies a number of sensors used by different types of ECU and briefly discusses information each ECU requires for different uses.