Commercial Vehicle Solutions

Cabin Dampers

More comfort for the driver

Key Facts

Driving comfort

Improved comfort levels reduce driver fatigue

Individual solutions

Different cabin design requires an individual damper design

Driving safety

Increasing performance and thereby driving safety

Compact

Less installation space required

What can Cabin Dampers provide?

ZF damping systems for the driver's cab provide greater safety, comfort, and stability. Improved comfort levels reduce driver fatigue, increasing performance and thereby driving safety. This creates a more efficient and comfortable working environment for the driver. ZF offers solutions from the lateral dampers, through steel and air spring modules to the Cabin Air Leveling Module (CALM®) and the Continuous Damping Control system (CDC®).

Details

Task

ZF cab dampers provide greater safety, comfort, and stability. Improved comfort levels reduce driver fatigue, increasing performance and thereby driving safety. Ride comfort in commercial vehicles is considerably enhanced by cabin suspension and cabin damping that is separate from the chassis. Vehicle cabs differ in size, equipment, and weight depending on their application. Each different cabin design requires an individual spring/damper solution.

Product range

CDC® - Continuous Damping Control

CDC eliminates the trade-off between comfort and stability in the cabin across various driving scenarios, such as accelerating, braking, cornering, and more. The damping forces are adjusted to the optimum level within milliseconds on the basis of data provided by the vehicle‘s sensors.

At straight roads the system reduces damping forces to make cabin suspension soft and comfortable. As soon as excitation of the cabin changes due to lane changes, braking maneuvers, or gear shifts, CDC® helps keep the cabin stable by increasing damping forces. The system also contributes to fuel efficiency by enabling shorter gear-shifting times and reducing tractive force interruption without compromising ride comfort, e.g. due to stronger cabin pitch.

ZF provides tailored solutions for any driver’s cab, regardless of type, size, or equipment. From medium and heavy trucks to off-road and agricultural machinery, the range meets every application need.
Advantages:

  • Stability even in challenging driving situations
  • Better handling during dynamic driving maneuvers
  • Improved comfort for driver
  • Better protection of vehicle body and cargo

  • Smart system with optimum cost-benefit-ratio

  • Road proven system

Air Spring Module
The air spring module is used for driver cabs with high comfort requirements and for trucks, tractors, construction vehicles, and special vehicles.

Advantages:

  • Ride height control with different cabin equipment/loading
  • Constant, comfortable characteristic frequency
  • Increased ride comfort
  • Small installation space required

CALM® - Cabin Air Leveling Module
CALM® is used in all types of air spring cabins that require high comfort levels and are subject to a wide range of different load conditions. Areas of application include trucks, agricultural tractors, construction vehicles, and special vehicles.

Advantages:

  • Damping and air suspension with integrated height leveling
  • Low susceptibility of the height leveling to external influences such as dirt and damage
  • Modular design
  • Smaller installation space required
  • No adjusting during assembly
  • Fewer individual components

Vario damper - Stroke-dependent damping

Control grooves in the cylinder tube, which create a hydraulic bypass, are used to implement stroke-dependent damping. The hydraulic bypass works on the piston valve. It is mechanically formed in the cylinder tube of the shock absorber.The piston travels over the control groove depending on the shock absorber position and stroke. When oil flows over the groove, hydraulic resistance is reduced and therefore the damping force as well. The damping forces are significantly higher outside the grooves – for even more driving safety.Careful design of the transition profile between the groove and the smooth part of the cylinder prevents abrupt changes in vehicle damping.

Advantages:

  • Enhanced comfort
  • Economical
  • Integration into standard shock absorbers possible
  • Can replace existing shock absorbers
  • No control elements needed

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