Volvo has also had something similar. But apparently this system is totally integrated and not separate stuff.
But I don't know for certain.
Which models of Toyotas?
Marty
John Neff wrote:
>
> I understand Toyota has been using this type of system for several years.
>
> John
>
> <snip>
> Valeo Steering Integrated Hydraulic Fan System Boosts Overall Vehicle
> Performance
> Valeo, a supplier of automotive motors and actuators, has introduced a new
> steering system-integrated,
> hydraulically driven engine cooling fan system (HDFS) that improves fuel
> economy, air conditioning
> performance and towing capacities, while reducing engine compartment
> operating temperatures. The industry
> has long known that hydraulic systems can meet all cooling fan needs.
> However, these systems were
> previously too costly and heavy for practical application. By integrating
> the HDFS with the power steering
> pump, the Valeo design eliminates the cost, weight and parasitic losses of a
> separate hydraulic circuit with its
> own pump. In the Valeo design, a common pump powers both the fan and the
> hydraulic assist to the power
> steering system. A dual displacement motor drives the fan and efficiently
> transfers power levels greater than
> 10 horsepower from the pump. The maximum air moving power is 20 to 30 times
> higher than is typically
> available from electrically driven fans. This gives the engine cooling
> system a cushion of safety for long, heavy
> towing. HDFS also allows much better heat dissipation for the air
> conditioning condenser. This results in
> improved air conditioning performance in comparison to traditional
> engine-driven fan systems. HDFS also
> temporarily reduces fan power draw during rapid vehicle acceleration. The
> system is currently being used in
> the 2001 Jeep Grand Cherokee. Source: Valeo Company Press Release
> <unsnip>
-- "One man's religion is another man's belly laugh." --Robert A. Heinlein
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:01:31 EDT