press r e le a s e
January 12, 2015
KSPG AG
Modern coolant pumps for every application
Pierburg in Auburn Hills, Michigan, USA, is responsible for the marketing and
engineering of oil, coolant and vacuum pumps. Pumps are also produced for
the American market in Celaya, Guanajuato, Mexico. In order to address
growing cooling requirements and rising demands posed by modern engine
generations, the company offers a broad lineup of coolant pumps.
In 2012, the Auburn Hills location expanded its testing facilities for electric pumps,
with rigs for vacuum, variable-flow oil and tandem pumps were added. With its
expertise systematically extending, Pierburg is thus in a position to provide local
expert support to North American OEMs in their development projects.
It is especially in the coolant pump segment that KSPG has a whole family of
products of various capacities. Depending on the type of application, coolant pumps
are subdivided into two output ranges: electric water circulation pumps with a total
output of 15 to 30 W and electric coolant pumps rated at 50 to 400 W and beyond.
For over a decade now, Pierburg has been leading the market for electronically
commutated water circulation pumps used, especially, wherever cooling or heating
duties have to be performed independently of the main water circuit. Characteristic
examples are engine-independent heating, a secondary heater, utilization of
residual engine heat or supplementary functions with the engine switched off. This
type of pump is also used for turbocharger cooling, exhaust gas cooling on an
exhaust gas recirculation system, and even for the power electronics system
cooling on hybrid and electric vehicles.
On the water circulation pump with enhanced output, improvements to the
hydraulics and EC motor have resulted in much increased efficiency. For the same
dimensions, the smart electronic controller of the electric motor achieves added
hydraulic output. This allows reduced heat build-up.
Electric options starting from 50 W
The bigger sister of the water circulation pump is the electric coolant pump CWA 50,
which is chiefly used in secondary circuits such as for charge-air cooling.
This is a pump that since 2008 has gone into series production for Audi, BMW, and
Chrysler. It is electrically driven (independent of engine RPM) and thus cools on
demand, when and how needed.
KSPG AG
Corporate Communications · Karl-Schmidt-Straße · 74172 Neckarsulm
Tel. +49 7132 33-3141 · Fax +49 7132 33-3150 · www.kspg.com · A Rheinmetall Company
A more powerful option is the CWA 200, the first electric coolant pump to go into
volume production. Back in 2004, the BMW Group installed this pump for cooling its
inline six engines; then starting from 2006, BMW’s inline fours were also electricpump cooled.
On-demand coolant supply as facilitated by an electric coolant pump will lead to fuel
savings in the region of two to three percent. Under special conditions (such as cold
starting), the pump can be switched off completely; the quicker engine heat buildup
results in reduced emissions. The coolant pump is controlled by integrated
electronic components that respond to signals sent out by the engine management
system that accumulates and processes data on temperature, engine load, engine
RPM, vehicle speed, and coolant temperature.
Dispensing with mechanical drive elements allows additional latitude for
accommodating component packages within the engine compartment.
A modular platform permits the CWA 50 and 100 as well as the CWA 200 and 400
pumps to be engineered and produced at low cost. As a result, a further range of
electric pumps is available for a wide variety of cooling applications.
High performance for tomorrow’s technologies
Electric coolant pumps are indispensable when it comes to tomorrow’s drive options
such as hybrid or fuel-cell propulsion where CWA pumps are installed to cool the
high-performance batteries, the fuel cell, and the necessary onboard power
converter.
Contact:
Folke Heyer
Head of Communications
KSPG AG
Karl-Schmidt-Straße, 74172 Neckarsulm, Germany
P: +49 7132 33-3140, F: +49 7132 33-3150
folke.heyer@de.kspg.com
Paul Klapproth
Senior Manager Communications USA
KSPG AG
975 S. Opdyke Road, Suite 100, Auburn Hills, MI 48326
P: 248 836 2904, F: 248 836 0249, C: 248 760 0596
paul.klapproth@kspg.com
KSPG AG
Corporate Communications · Karl-Schmidt-Straße · 74172 Neckarsulm
Tel. +49 7132 33-3141 · Fax +49 7132 33-3150 · www.kspg.com · A Rheinmetall Company