Honda CBS

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The CBS ( C ombined B rake S ystem) is a combined braking system for motorcycles , which in 1993 by Honda for the first time in the Honda CBR1000F was offered. Based on the principle of the compound brake , the CBS is used to make the braking process more effective and simpler in motorized single-track vehicles and to increase protection against the locking of one of the two wheels.

Single CBS

The single CBS was first offered in 1999 in the Honda Foresight 250 scooter , but with a drum brake on the rear wheel. In the same year, Suzuki offered the Burgman with an identical system. In 2001 the Roller @ 125 and in 2002 the SH125 model were equipped with it.

When using the single CBS in scooters, the main braking load on the rear wheel is combined with a partial braking load on the front wheel. When the left brake lever is operated, in addition to the rear brake, the front brake is operated via a Bowden cable that pulls the right brake lever. The right brake lever only controls the front brake and works autonomously, hence the term “single”. From 2002 to 2006, the single CBS was installed in the Honda NT650V Deauville , with the foot brake lever controlling both wheels.

The single CBS is installed today (as of 2010) in the following scooters:

The single CBS is combined with ABS in the following scooters:

Three-piston brake caliper

Dual CBS

The Dual Combined Brake System (DCBS) or Dual-CBS for short was first offered in 1993 in the Honda CBR1000F . When the handbrake lever is operated, the brake pressure is built up directly on four of the six brake pistons of the two brake discs on the front wheel. Furthermore, it is fed to a control valve ( proportional control valve - PCV) via a secondary brake cylinder actuated by the rotatably mounted left front brake caliper . This modifies the pressure via a gable-roof-shaped control curve and directs it to the four outer pistons of the rear brake calliper. The foot brake lever first brakes the rear wheel, a valve activates the two middle pistons of the front wheel brake with a delay.

In this way, both wheels are always braked, even if the driver only operates one of the two brake levers. The manufacturer states that the driver also has a significantly larger range of applied brake pressure available in order to achieve optimal braking performance, in any combination of levers.

Dual-CBS was installed in the following motorcycle models:

CBS-ABS

The CBS-ABS system represents the current state of development of the Honda composite brake for two-wheelers. It contains an anti-lock braking system for motorcycles .

The first generation of the CBS-ABS, a dual CBS with a motor-operated and electronically-mechanically controlled anti-lock braking system , was first offered in series in 1996 on the Honda ST1100 Pan European . Depending on the model, two or only one brake piston on the front brake discs is activated when the foot pedal is operated.

The second generation of CBS-ABS (e.g. Honda VFR1200F ) works with twelve brake pistons on the front wheel and two brake pistons on the rear wheel. When the hand lever is operated, six pistons on the right disk and four on the left disk on the front wheel are moved hydraulically. When the foot pedal is operated, two pistons on the rear wheel and, controlled by the pressure modulator with electromagnetic control valves, the two upper brake pistons of the left front brake caliper on the front wheel are also activated.

In the third generation - Combined Sports (e.g. Honda Fireblade , Honda CBR600RR ) z. B. the brake pressure built up on the hand lever is recorded by a sensor and sent to the ABS control unit, which builds up the hydraulic brake pressure via modulators. The braking force is controlled electronically, which is why Honda speaks of a “ brake-by-wire system”. The response time of the electronic control should be three hundredths of a second. Depending on the version, the CBS-ABS is switched off below 4 km / h (Combined Sports) or 10 km / h ( Honda SH300 ).

The CBS-ABS is offered today (status 2010) in all Honda motorcycles. The exception is the 750 Shadow Black Spirit as well as trial, cross models and scooters with a displacement of less than 250 cm³.

Web links

Individual evidence

  1. MOTORRAD test 1993
  2. MOTORRAD test 1999
  3. a b world.honda.com ( Memento of the original from December 28, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Motorcycle Technology - Brake (accessed August 16, 2015)  @1@ 2Template: Webachiv / IABot / world.honda.com
  4. MOTORRAD test 1996
  5. Winni-Scheibe.com Functional diagram CBS-ABS VFR 2002 . Retrieved July 16, 2010
  6. honda.de brake systems . Retrieved July 16, 2010
  7. honda.de