Turbocharger from Honda CX500 Turbo Motorcycle, 1982.
© Science Museum / Science & Society Picture Library
In this turbocharger, a turbine extracts waste energy from the exhaust and drives a compresor which supplies the engine with air at more than twice atmospheric presure. A complex air-intake system and computer controlled fuel injection and ignition timing systems are used to reduce the lag, producing an engine which is both powerful and tractable. The CX500 Turbo has a 497 cc V-twin, water-cooled, four-stroke engine and a five-speed gearbox. Its maximum speed is 120 mph (192 km/h).