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Denso celebrates 40th anniversary of its gasoline injection business at its Nishio Plant in Japan


Denso today held an event to celebrate the 40th anniversary of its gasoline injection business at its Nishio Plant in Aichi, Japan. Denso has produced gasoline injection products such as injectors and fuel pumps for over 40 years since 1972. The Denso Group produced its 900 millionth injector in June 2013 and its 250 millionth fuel pump in January 2013. Denso now produce gasoline injection products in 10 countries and regions including Japan. In the early 1960s, Denso started research on fuel injection systems for gasoline engines to respond to the growing demand for cleaner emissions. In 1972, the company began production of an electronic fuel injection system that can more precisely control fuel injection. In the same year, the company started mass-producing injectors and fuel pumps..

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In 1983, Denso developed a fuel pump with the world’s lowest operating noise at the time, which improved the comfort for passengers. In 1999, DENSO developed the world’s first 12 nozzle orifices when conventional injectors typically had four of them. Due to the smaller size of their nozzle holes, this injector realized the atomization of the fuel spray and therefore increased the engine combustion efficiency. In 1996, DENSO started production of high pressure injectors and high pressure pumps for gasoline direct injection (GDI) engines. And in 2010, the company mass-produced a GDI injector with the world’s finest level of fuel spray at the time and a GDI fuel pump with the world’s highest pressure level.

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