The considerably smaller mechanical main pump, featuring an off - axis design, is located next to the main shaft and is chain - driven and fed by a separate electric auxiliary pump. (greencarcongress.com)
The findings could have an impact on the tests and measurements that physicians rely on to diagnose and treat two heart conditions: hypertrophic cardiomyopathy, in which the heart muscle becomes abnormally thick, and non-ischemic dilated cardiomyopathy, in which the heart's ability to pump blood decreases as the organ's main pumping chamber, the left ventricle, is enlarged and its muscle thinned. (sciencedaily.com)
Hence there's a new oiling system that combines an electronically controlled main pump with a secondary unit that ensures oil supply even during high G on - track extremis. (motoring.com.au)