SAGEM SA (www.sagem.com) is a supplier of gasoline direct-injection systems, mastering the development and production of sub-systems and components such as: high-pressure gasoline injection (injector, rail, pressure sensor); ECU and control strategies; ignition (pencil coil, spark plug), and emission control (exhaust gas recycling valve, secondary air injection, and canister purge valve). The small size of the high-pressure injector gives the engine manufacturer complete liberty in the design of the combustion chamber (nose diameter 7.5 mm, length 30 mm). Ignition is provided by highly compact pencil coils (19.5-mm diameter).