A supercharger is an air compressor that increases the pressure or density of air supplied to an internal combustion engine. This gives each intake cycle of the engine more oxygen, letting it burn more fuel and do more work, thus increasing power.

Power for the supercharger can be provided mechanically by means of a belt, gear, shaft, or chain connected to the engine's crankshaft. When power is provided by a turbine powered by exhaust gas, a supercharger is known as a turbosupercharger – typically referred to simply as a turbocharger or just turbo. Common usage restricts the term supercharger to mechanically driven units.

History

In 1860, brothers Philander and Francis Marion Roots, founders of Roots Blower Company of Connersville, Indiana, patented the design for an air mover for use in blast furnaces and other industrial applications.

The world's first functional, actually tested engine supercharger was made by Dugald Clerk, who used it for the firsttwo-stroke engine in 1878. Gottlieb Daimler received a German patent for supercharging an internal combustion engine in 1885. Louis Renault patented a centrifugal supercharger in France in 1902. An early supercharged race car was built by Lee Chadwick of Pottstown, Pennsylvania in 1908 which reportedly reached a speed of 100 mph (160 km/h).

Supercharged is the eighth album by American soul/R&B group Tavares, produced by David Foster, Benjamin Wright and Bobby Colomby (former drummer of the rock group Blood, Sweat & Tears), and released in 1980 on the Capitol label. Supercharged is similar in style to the group's previous album Madam Butterfly, and although not as highly regarded at its predecessor, critical reaction is generally positive. Lead single "Bad Times" reached the R&B top 10 and #47 on the pop chart, the group's first showing on that chart since "More Than a Woman" in 1977. Supercharged made #20 on the R&B chart and #75 on the pop chart.

Track listing