Aisin Seki claims it has successfully developed a smaller, cheaper electric cooling pump through some effective effi ciency optimisations. The company says its electric pump uses a newly shaped impeller to improve performance. In addition, the design positions the components so that both the motor effi ciency and the centrifugal pump mutually benefi t. The pump also uses fewer components, allowing it to occupy less space. The pump design also incorporates an aluminium enclosure, which acts as a heat sink, further easing the heat resistance requirements. The company says the cost of the electric pump was reduced by using an inexpensive and heat-resistant printed circuit board. It has been designed so that it can be installed in the same position as mechanical pumps.