Other Products / Services #4491631

Sanding systems are used in rail vehicles to improve friction between wheel and track. Operation is either automatic or can be initiated by the driver, who can use it in a targeted way for starting-up and braking.


Sanding system
During emergency braking, sanding is automatically activated. The sand is contained in a sandbox and, when necessary, is conveyed by compressed air between the wheels and the track.
Advantages:
Optional 2 stage or continuous speed dependent sanding
Complete pre-assembled sandboxes: Plug & Play
Compact design
Economical life-cycle costs
Knorr-Bremse, as a competent partner, offers all the components for a sanding system:

Sanding systems are used in rail vehicles to improve friction between wheel and track. Operation is either automatic or can be initiated by the driver, who can use it in a targeted way for starting-up and braking.


Sanding system
During emergency braking, sanding is automatically activated. The sand is contained in a sandbox and, when necessary, is conveyed by compressed air between the wheels and the track


Advantages:
Optional 2 stage or continuous speed dependent sanding
Complete pre-assembled sandboxes: Plug & Play
Compact design
Economical life-cycle costs
Knorr-Bremse, as a competent partner, offers all the components for a sanding system:
Air Supply
This comes from the vehicle air supply or from a dedicated, small electric compressor.

The model EDT101 derailment detectors are suitable for use in trains using indirect air brakes. If a wheelset happens to derail, the detectors induce an emergency application by venting the brake pipe. Once the brake pipe is entirely vented, the detectors return automatically to their starting position then independently returns to its operating state and a red cylinder on the indicator device shows which unit has reacted until the indicator is reset by hand. Since the detectors act pneumatically they can be installed in trains with either electrically or pneumatically controlled brakes.

Whether pneumatically or electrically powered, Knorr-Bremse windscreen wiper and wash systems cover the whole spectrum of rail vehicles: whether tramway, metro, locomotive or high-speed trains.


Windscreen Wiper
The product portfolio ranges from systems for segmental or parallel wipe areas to applications with overlapping wiped areas with electronically synchronized wiper drive units. Of course, all of them are exclusively equipped with components tried and tested by Knorr-Bremse.
The systems are characterized by their extremely long lifespan and reliability, resulting in optimized life-cycle costs. This is especially beneficial for the operator. Other advantages are the pre-assembled drive units which considerably reduce the vehicle manufacturers installation costs.

Visco-Dampers reduce rotary oscillation by the elastic andor damping combination of secondary mass (gyrating ring) and primary mass (housing)

The HYDROLASTIC damper reduces rotary oscillation in accordance with the hydrodynamic extrusion principle. Rotary oscillation causes a relative motion in the damper between the primary mass (hub) and secondary mass (housing). As a consequence of this relative motion, mineral oil is pressed through a narrow slot. The resulting drop in pressure equates to a hydraulic drop in power, which has a damping effect.

The model EDT101 derailment detectors are suitable for use in trains using indirect air brakes. If a wheelset happens to derail, the detectors induce an emergency application by venting the brake pipe. Once the brake pipe is entirely vented, the detectors return automatically to their starting position then independently returns to its operating state and a red cylinder on the indicator device shows which unit has reacted until the indicator is reset by hand. Since the detectors act pneumatically they can be installed in trains with either electrically or pneumatically controlled brakes.

Passengers today expect a lot from modern local public transport vehicles. They demand a high degree of freedom of movement, comfort and safety. As a result, the amount of space available for installing braking systems is becoming increasingly limited.


Hydraulic brake caliper
The challenge today is, therefore, to design extremely compact, light hydraulic systems, which combine safety, flexibility and fast response characteristic with high performance. As a solution to this, Knorr-Bremse offers a wide product range which has contributed decisively to the development of new vehicle generations such as, for example, the low floor tramway.
Electro-Hydraulic Unit

Pedal units with integrated clutch actuation systems are also included in Knorr-Bremses wide range of valves. These modules, constructed on the Plug-and-Play principle, offer the customer significant technical as well as logistical advantages.

All four axle freight wagons with Y25 bogie
Freight wagons with reduced noise emissions
Freight wagons for difficult environments
Adaptation to customer-specific bogies possible

Compressed air is the main source of energy for all pneumatic braking systems, air suspensions and clutches in commercial vehicles. The main component in air provision is the compressor itself. Driven, as a rule, by the vehicles engine, it produces the necessary compressed air for all the air systems.
The Knorr-Bremse product portfolio covers a wide range of requirements in terms of transport and propulsion. The range includes flange mounted - with direct gear drive, or base mounted - with belt drive, one or two cylinder compressors. They can also be supplied with our optional energy-saving system (ESS).


Compressor with clutch
A further Knorr-Bremse innovation is our compressor with clutch which, as well as delivering considerable savings in fuel costs, also reduces oil emission.

An electronic gear control unit allows a fully automatic gear change to be made with a manual gearbox; the unit is usually directly mounted on top of the gearbox. The electronic gear control unit is a combination of mechanical components (e.g. pneumatic cylinders) as well as electrical components (e.g. solenoid valves, cables, electronic control units).
Due to the integration of several functions, todays automated manual transmission (AMT) modules reach an enormous degree of complexity. An AMT is the basis for the improvement of the driving comfort and the reduction of the load of the driver. The driver is able to focus his attention on the road traffic; there is no need to concentrate on the gear selection and gear shift process any more. The use of an optimized gear shift strategy (selected by the system and based on the driving situation), means that AMT can significantly reduce fuel consumption and mechanical wear in e.g. tractortrailer couplings when compared with conventional manual gear box operation.

Knorr-Bremse PowerTech is a specialist in advanced auxiliary power supply for all types of rail vehicle LRVs, high-speed trains, metros, locomotives or long-distance passenger cars. On the basis of our extensive portfolio we develop the right solution for your specific requirements and of course world-wide service is included.
Product features for regional and long-distance
Suitable for UIC-standard input voltages
Several individual AC and DC outlets
AC output range 15 kVA to 120 kVA
DC output range 5 kW to 25 kW
Available for installation under floor, on roof or in cabinet
Compact and light-weight design thanks to medium-frequency technology
Forced-air cooling

An air supply system encompasses the production of compressed air by means of compressors and air preparation. The end result is the supply of the specified amount of compressed air of the quality required.


Oil-free Compressor
Compressed air is the energy source for the basic functions of a railway train. As well as operating the brakes, it is also used to open the doors, powering the air suspension, the sanding unit as well as to raise the pantographs and powering the windscreen wipers.
The trend towards more compact, lighter vehicles with increasing levels of safety and performance provides, today, an additional challenge for every manufacturer. For these reasons, a reliable supply of compressed air calls for innovative concepts. Knorr-Bremse is confronting this challenge and offers a tailor made system for every air supply requirement. By reducing the number of interfaces, significant reductions in assembly and disassembly times can be achieved. Due to the great reliability of the integrated system, the availability for use of the entire train system is increased.

The product range, which extends from pressure regulators up to air dryers and multi circuit protection valves, contributes to the functional safety of pneumatic systems. Additionally, we offer the Air Processing Unit (APU), which combines all the functions of an air dryer and a multi circuit protection valve in one device. APUs are available as a flanged solution or as an extremely compact monobloc version for reduced installation space.
The compressed air produced by the compressor must be dried and cleaned before being distributed to up to seven different brake and subsidiary circuits. These circuits must be filled with up to three different pressure levels and secured against each other in order to fulfill reliably the highest safety demands in traffic.

tedrive has developed the intelligent hydraulic steering system iHSA (= intelligent Hydraulic Steering Assist) an innovation sustainably influencing the market for vehicle steering systems. By means of its torque overlay, iHSA offers safety, comfort and an interface with modern driver assistance systems and thereby allows the integration of lane departure warning systems, side wind compensation, etc. The hydraulic technology is variable, front axle load-independent and environmentally-friendly. In addition to the improved steering functions, the advantages of the iHSA hydraulic steering system of tedrive include its optimized installation dimensions, cost and design advantages for platform strategies and the CO-saving potential of the pump and steering gear. Through the integration of the iHSA control module into the base rack & pinion or recirculating ball steering gears, the technology is available for cars, light commercial vehicles, trucks and buses.

In the LCV steering systems segment, tedrive stands out due to some unique technical features: the robust, modular steel housing technology and the optional use of the iHSA control module and therefore the integration of all safety and comfort features also for light commercial vehicles; a first in this class of vehicle. In comparison to conventional aluminium steering housings, steel housings offer greater rigidity, toughness and improved quality through the elimination of porosity. These properties have a noticeable effect on optimizing the steering precision of the transporters. A reliable addition to commercial vehicle steering systems is the integration of the intelligent steering assist iHSA.

tedrive has developed the intelligent hydraulic steering system iHSA (= intelligent Hydraulic Steering Assist) an innovation sustainably influencing the market for vehicle steering systems. By means of its torque overlay, iHSA offers safety, comfort and an interface with modern driver assistance systems and thereby allows the integration of lane departure warning systems, side wind compensation, etc. The hydraulic technology is variable, front axle load-independent and environmentally-friendly. In addition to the improved steering functions, the advantages of the iHSA hydraulic steering system of tedrive include its optimized installation dimensions, cost and design advantages for platform strategies and the CO-saving potential of the pump and steering gear. Through the integration of the iHSA control module into the base rack & pinion or recirculating ball steering gears, the technology is available for cars, light commercial vehicles, trucks and buses.

The bogie equipment is the part of the overall system that actually generates the braking force.


Compact wheel brake caliper
Thanks to continuous product and system innovation in this demanding product area, braking performance, life-cycle costs, noise emissions and installation costs have been significantly improved to the very highest level and safety standard.
In the course of this, every piece of bogie equipment is individually designed, i.e. to take into account customer-specific operating conditions, operating area and installation conditions.

The Knorr-Bremse Servo-Shift module is a pneumatically operated, servo-assisted shift system for manual transmissions. Thanks to the reduced shifting forces, the system allows a quick and comfortable gear change for maximum road safety and supports the driver in selecting the correct gear for the optimum fuel consumption. A combined servo force and shift speed limitation also protects the synchronization units of the gearbox.
The Servo-Shift module can be adapted quickly and easily to suit various gearbox types.
The application of the module can be realised via gear linkage or bowden cable system.

Clutch actuation units and gear control units ensure comfortable and safe control of today's commercial vehicle gearboxes.
The electro-pneumatic clutch actuator enables electronic control of a commercial vehicle clutch. The control is carried out by solenoid valves for supplying and exhausting the pneumatic actuation cylinder. An integrated stroke sensing unit ensures continuous monitoring of the clutch position.
The clutch actuator can be used in a wide range of applications like automated gearboxes, hybrid and clutch-by-wire.

Exhaust Brake
Exhaust Brakes are used on diesel engines to provide vehicle retardation by choking the exhaust gas flow downstream of the turbocharger.
The exhaust brake has a throttle valve which is actuated by a pneumatic operating cylinder.
The back pressure realized by a conventional uncontrolled exhaust brake is proportional to the engine speed. The controlled exhaust brake however is equipped with a mechanism that maintains a constant counter-pressure downstream of the turbocharger in a defined gas flow range. This consequently allows constant retardation that is independent of engine load and speed

Clutch servos have the function to proportionally "amplify" the foot pedal force by using air from the vehicle's compressed air system during the clutch disengagement process. The clutch servo is controlled hydraulically by the clutch master cylinder and operates the clutch mechanically via a lever system.

The Knorr-Bremse subsidiary, Microelettrica Scientifica (MS), produces AC&DC contactors and disconnectors, resistors and electronic devices for both industrial and railway applications.

Control Components
The products for the railway market include the following features. Four ranges of contactors and disconnectors operating up to 4 kV, for loads from 50 to 2000 A per pole. Resistors include brake, damping, snubber, filter, charging and discharging resistors. Electronic products are high voltage transducers for line voltage and current measurement and energy metering function, to be used both on board of vehicles and in DC substations.

Conventional or heat pump systems
Compact package or split systems
Roof, inside the car or under car installations
Passenger and drivers cab area
Microprocessor based temperature control
Air quality systems
Fire and smoke detection systems
Airduct systems (new and retrofitted vehicles)

The Knorr-Bremse subsidiary, Microelettrica Scientifica (MS), produces AC&DC contactors and disconnectors, resistors and electronic devices for both industrial and railway applications.

Control Components
The products for the railway market include the following features. Four ranges of contactors and disconnectors operating up to 4 kV, for loads from 50 to 2000 A per pole. Resistors include brake, damping, snubber, filter, charging and discharging resistors. Electronic products are high voltage transducers for line voltage and current measurement and energy metering function, to be used both on board of vehicles and in DC substations.

t is estimated that, in the European Community, the equipping of all trucks and busescoaches with electronic systems would result in 500 fewer deaths and 2, 500 fewer injuries due to road accidents per year. Knorr-Bremse is pressing ahead with the development of active and passive driver assistance systems and is thereby making a significant contribution to increasing safety on the roads. The product program in the area of electronic systems ranges from legally required ABS (anti-lock braking systems), through EBS (electronic braking systems) to ESP (electronic stability program) and ACC (adaptive cruise control).
ABS, ASR
ABS prevents locking of the wheels when braking, while ASR (traction control system TCS) ensures that, when accelerating, the wheels on the drive axle do not spin, thereby ensuring optimal traction in all driving conditions. As a pioneer in the development of ABS systems for commercial vehicles, Knorr-Bremse provides ABS and ASR systems for all vehicles types and trailers with air braking.

The disc brake is the wheel brake for heavy goods vehicles. With the pneumatically tensioned disc brake, Knorr-Bremse has set the benchmarks for commercial vehicles with a total weight of from 6 to over 44 tonnes. The crucial advantages over conventional systems are: low weight, compact design, even brake pad wear, improved servicing convenience, cost savings and increased safety.

Brake control is an extremely safety-relevant sub-system of the train due to the fact that it must allow reliable stopping of the train in all operating conditions.


EP Compact
Optimum braking is achieved if operation of a single lever by the driver results in an individual braking force being applied to each axle or bogie of the train. As the driver himself is not in a position to apply the brakes with a specific force to each axle or bogie, modern brake control systems need to have a large number of integrated intelligent functions:
Load-specific braking of empty or loaded cars
Antilock Braking System (wheel slide protection)
Driver alertness monitoring (SiFa)
Remote-controlled emergency braking (LZB, Penalty Brake)
Passenger-operated emergency braking systems
Anti-wheel-skid systems

Brake control is an extremely safety-relevant sub-system of the train due to the fact that it must allow reliable stopping of the train in all operating conditions.


EP Compact
Optimum braking is achieved if operation of a single lever by the driver results in an individual braking force being applied to each axle or bogie of the train. As the driver himself is not in a position to apply the brakes with a specific force to each axle or bogie, modern brake control systems need to have a large number of integrated intelligent functions:

Platform screen door systems make a significant contribution to platform safety, air conditioning and the cleanliness of the boarding area. They extend the entire length of the platform. The cars come to a halt in such a way that the vehicle doors and the platform doors are adjacent. Every platform door is made up of and automatic sliding door with two wings. This door is integrated into a glass wall element. The door control is protected from unauthorized access by a sealed housing. Platform sills give the doors and wall elements additional stability.

It is easy for delays to occur while passengers are getting on and off the train. The quality of the access system, therefore, has an important influence over the operating efficiency of rail vehicles. Calculations show that the advantage to a business of a high quality access system exceeds its procurement costs by up to ten times. The security and the comfort of the passengers are always in focus when developing a detection systems and access devices.