LINNIG
Engine Cooling Systems
Demand-meeting engine cooling at high efficiency
Trust the Original – LINNIG Engine Cooling Systems
Efficient engine cooling means saving fuel
The primary units of LINNIG’s engine cooling systems are electronically controlled electromagnetic fan clutches, available in 2- and 3-speed versions. These clutch systems enable demand-meeting engine cooling to be realized by reducing to the required fan speed. That directly leads to cutting fuel costs at optimum efficiency.
Accurate heat removal depending on individual output curve
Depending on the application, the design of the fan clutch adapts to the customer‘s output curve and can thus ensure accurate, very swift heat removal: Within 0.5 seconds the fan is fully engaged, and thus draws off heat immediately. The maximum engine power is always available.
Precision. Cooling. Efficiency.
Innovative transmission technology for a flexible, efficient cooling system – compact, lightweight, and ISO 9001 & 14001 certified. Made in Markdorf, Germany.
*compared to other systems
Note: Our drive has an efficiency of 98%
100%
Core
business
50%
Weight reduction
30%
Lower
costs*
35%
Higher efficiency*
Working principle
Various installation possibilities
Depending on vehicle type and installation situation, various possibilities are given:
- Installation with open radiator-fan bearing frame
- Installation at the water pump
- Engine-mounted installation
- Installation with angle gearbox
2-speed fan clutch with two speed ranges
Reduced speed (2): When the electromagnetic clutch is deactivated (disengaged), the fan blade can reach speeds of up to 1,200 RPM by means of a contact- and wear-free operating eddy current system.
1:1 ratio (3): When the electromagnetic clutch is activated via a temperature sensor, the fan blade runs synchronous with the drive pulley.
3-speed fan clutch with three speed ranges
In the 3-speed version, the eddy current system can be activated and deactivated. This enables very low fan speed and thus swift warming-up of the engine.
Very low speed (1): When both electromagnetic clutches are deactivated, the fan blade runs at a speed below 100 RPM, owing to the interior friction conditions.
Medium speed (2): When the inner electromagnetic clutch is activated via the fi rst temperature sensor, the fan blade can reach speeds of up to 1,200 RPM by means of a contact- and wear-free operating eddy current system.
1:1 ratio (3): When the outer electromagnetic clutch is activated via the second temperature sensor, the fan blade runs synchronous with the drive pulley.
Electromagnetic fan clutches
Benefits at a glance
- Compact design & High efficiency
- No “morning sickness”
- Precise fan control
- Demand-oriented cooling reduces fuel consumption and CO2 output
- The RPM characteristic of the eddy-current stage can be specified according to customer requirements
- Low noise level in comparison to rigid drives: The specified noise limit values are clearly fallen below
- Simple installation and removal
- Maintenance-free drive means low downtime
- Long service life
Additional advantages of the 3-speed version
- Especially in countries with low temperatures, the 3-speed solution prevents overcooling of the engine.
- Rapid engine warm-up
>> All fan clutches are also available with erase diode
Technical specifications
Fan clutches for installation with open radiator-fan bearing frame (2-speed / 3-speed)
2-speed
Torque:
Up to 1,200 Nm
Fan diameter:
Up to approx. 1,800 mm
Voltage:
12 V and 24 V
3-speed
Torque:
135 – 400 Nm
Fan diameter:
Up to approx. 1,200 mm
Voltage:
12 V and 24 V
Fan clutches for installation at the water pump (2-speed / 3-speed)
2-speed
Torque:
Up to 220 Nm
Fan diameter:
Up to approx. 800 mm
Voltage:
12 V and 24 V
New: Light weight fan clutch max. 2,2 kg
3-speed
Torque:
Up to 135 – 180 Nm
Fan diameter:
Up to approx. 800 mm
Voltage:
12 V and 24 V
Fan clutches for engine-mounted installation (2-speed / 3-speed)
2-speed
Torque:
Up to 1,200 Nm
Fan diameter:
Up to approx. 1,800 mm
Voltage:
12 V and 24 V
3-speed
Torque:
135 – 400 Nm
Fan diameter:
Up to approx. 1,200 mm
Voltage:
12 V and 24 V
Angle gearboxes and electromagnetic fan clutches
Benefits at a glance
- Easy to service
- Long service life through integrated gearbox ventilation
- Optimized ball bearings
- Long oil-change intervals
- Noise reduction
- Efficiency 98%
Technical specifications
Combination fan clutches (2-speed / 3-speed) downstream of the angle gearbox LLW100
2-speed
Torque:
Up to 220 Nm
Fan diameter:
Up to approx. 800 mm
Voltage:
12 V and 24 V
Tested durability:
Tried-and-tested over 100,000 times
Design:
Very compact system design
3-speed
Torque:
Up to 135 Nm
Fan diameter:
Up to approx. 800 mm
Voltage:
12 V and 24 V
Tested durability:
Tried-and-tested over 100,000 times
Design:
Very compact system design
Angle gearboxes for fan clutches LLW200
2-speed
Torque:
Up to 220 Nm
Application:
Visco and electromagnetic fan clutches
Fan diameter:
Up to approx. 800 mm
Weight:
Low weight: 12 kg
Noise:
Noise-reduced: Significantly below the required industrial limit values
Ventilation:
New integrated ventilation increases the service life of the shaft seals
Sustainability:
100% recyclable
Downloads | Certificates & Brochures
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