KARIYA (Japan) - DENSO Corporation 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.

"We now produce gasoline injection products in 10 countries and regions including Japan," said Michio Adachi, senior executive director of DENSO's Powertrain Control Systems Business Group. "The company strives to meet market demand for cleaner emissions and better fuel efficiency through the development of advanced technologies and continual improvement of monozukuri (the art of making things)."

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. Since then, DENSO has reduced the size and weight of these products while improving their performance to meet stringent emissions standards and the demand for higher fuel efficiency.

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 an GDI fuel pump with the world's highest pressure level.

About Electronic gasoline fuel injection system

The electronic gasoline fuel injection system consists of injectors, fuel pumps, engine ECUs, various sensors, and other components. DENSO started to produce engine ECUs in 1971. Since 1972, DENSO has used semiconductor devices and ICs developed and produced in-house, to increase the reliability of its engine ECUs. DENSO also introduced various sensors including air flow meters, O₂ sensors, and air-fuel ratio sensors.

DENSO Corporation, headquartered in Kariya, Aichi prefecture, Japan, is a leading global automotive supplier of advanced technology, systems and components in the areas of thermal, powertrain control, electronics and information and safety. Its customers include all the world's major carmakers. Worldwide, the company has more than 200 subsidiaries and affiliates in 38 countries and regions (including Japan) and employs more than 130,000 people. Consolidated global sales for the fiscal year ending March 31, 2013, totaled US$38.1 billion. Last fiscal year, DENSO spent 9.4 percent of its global consolidated sales on research and development. DENSO common stock is traded on the Tokyo and Nagoya stock exchanges.