JECS

1956 Unisia established.

June 1973 JECS formed.

1993 JECS merges with Atsugi Unisia, becoming Unisia JECS Corp.

November 1999 The French clutch company Valeo buys shares in Unisia JECS clutch division to gain entry to the Japanese market. This closely follows Renault's purchase of a controlling interest in Nissan, April of the same year.

Mid 2001 Unisia JECS forms joint venture with Bosch Braking Systems Co. to produce power steering systems.

October 2002 100% of Unisia JECS Corp. bought by Hitachi, delisted from stock market, renamed Hitachi Unisia Automotive, Ltd.. Previously, Nissan Motor, Hitachi and Robert Bosch owned 25%, 17% and 10% respectively.

2003 Unisia JECS opens factory in Shenzhen, China, to cut costs as demanded by Nissan.

2004 Hitachi Unisia Automotive Ltd. merged into Hitachi, Ltd.

Electronic Fuel Injection

Bosch first produced the Jetronic EFI system in 1967. K-Jetronic & L-Jetronic followed from around 1973 which is when Nissan became involved.

L-Jetronic

Early JECS systems were L-Jetronic, with Bosch moving vane airflow meters. These systems used a mixture of German & Japanese parts. The electronics were Japanese, the sensors often German, the fuel pumps/regulators made under license to Bosch by DENSO.

LH-Jetronic

By the mid-1980s, JECS were using LH-Jetronic, and the new Bosch hotwire mass airflow meter. The early JECS LH-Jetronic systems were based on a Motorola 6800 architecture, using many Hitachi components. The earliest hotwire meters were still from Germany, but by the end of the 1980s all of the system components (pumps, sensors, injectors, ECU) were being made in Japan.