Slide 1

ELECTRONIC BRAKING SYSTEMS MOTOR VEHICLE Slide 2 EBS ADVANTAGES 1. Shorter braking distance -Reduction of response and build-up time -Quicker and more precise brake pressure control -Electro pneumatic control circuit -Shorter pneumatic lines -Larger cross sections of valves -10 bar constant pressure system by new APU (Air Processing Unit) -Use of disc brakes (drum brakes also possible) Slide 3 EBS ADVANTAGES 2. Longer service life of wheel brakes -Dependent from wear brake apportioning in towing vehicle during adapting braking -Dependent from adhesion brake apportioning in towing vehicle during higher decelerations -Better participation of trailer during braking mechanics -Involvement of available sustained-action brakes (engine brake, continuous throttle, retarder) Slide 4 EBS ADVANTAGES 3. Improved actuation -Pedal feeling similar to cars -Reduction of response and build-up time -Deceleration control by providing travel at brake pedal clearly improves ability to graduate braking force 4. Better participation of trailer -Quicker trailer response through "pressure shot" to coupling head for control (at trailers without EBS) Reduction of response and build-up time -Quicker and more precise brake pressure control through electro pneumatic control -Automatic brake apportioning to tractor and trailer within EC brake band -At trailers with EBS optimized brake apportioning through return information of wheel speeds of the trailer Slide 5 EBS ADVANTAGES 5. Extended diagnosis and service possibilities -Self tests when starting up, driving and braking -Component check: circuit path checked for interruption, short-circuit after battery positive and ground -Measurement readings given via on-board display or Diagnostic Interface via PC diagnosis -Fault memory -Sporadic and current malfunctions can be called up -Reactions checked for plausibility: permuted cables, pressure input and effect 6. Feasible additional options: -Halt brake -Rollback lock -ESC Slide 6 Knorr EBS, Motor vehicle Slide 7 Slide 8 Knorr EBS, Brake signal transmitter Slide 9 Mdulo eje delantero 1 G Mdulo eje trasero. 1 G Mdulo eje trasero. 2 G Knorr EBS, Axle modulator Slide 10 ESQUEMA ELECTRONEUMTICO 1 Generacin Knorr EBS, Axle modulator Slide 11 Knorr EBS, Trailer control valve Slide 12 Truck EBS Components Electronic control unit (ECU) Brake signal transmitter Slide 13 Truck EBS components EBS relay valve Redundant valve Slide 14 Truck EBS components EBS modulator ABS modulator Slide 15 Truck EBS components EBS trailer control valve Slide 16 Truck EBS components How does it work? Speed sensor types & toothed wheels RadialsRadials AxialsAxials SizesSizes Location SPEED SENSOR & POLE WHEEL Slide 17 Truck EBS System Slide 18 Braking signal transmitter Component Location Partial brake Maximum brake Electrical failure Slide 19 Braking Central Unit Component Location Partial brake Maximum brake Electrical failure Slide 20 EBS proportional relay valve Component Location EBS: working mode EBS failure Slide 21 EBS axle modulator Component Location Partial brake Maximum brake Electrical failure Slide 22 EBS Modulator 2 nd generation Component Location Partial brake Maximum brake Electrical failure Slide 23 Back-up Valve Component Location EBS working mode Pneumatic back-up Slide 24 EBS Trailer control valve Component Location Parking brake EBS working mode Electrical failure Slide 25 EBS: Components schemes EBS Tractor 4x2 without back-up EBS Tractor 4x2 with back-up EBS Truck 4x2 with back-up EBS Truck 6x2 with back-up EBS 2 generation without back-up EBS 2 generation with back-up Slide 26 Working modes EBS with intermediate load EBS with maximum load Parking brake Electrical failure Braking with electrical failure in front axle Braking with electrical failure in rear axle Slide 27 Electrical Schemes EBS 1B: Truck DAF 6x2 EBS 1B: Truck IVECO 6x2 EBS 1B: Truck IVECO 4x2 EBS 1B: Bus NEOPLAN 3 ejes EPB 1B: Truck Mercedes-Benz 6x2 EPB 1B: Truck Mercedes-Benz 4x2 EBS 1C: Truck DAF 4x2 EBS 2A: Truck IVECO 4x2