LINNIG Engine-Cooling Systems

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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