Location History:
- Aichi, JA (1977)
- Aichi, JP (1981 - 1982)
- Kariya, JP (1983)
Company Filing History:
6 out of 3,252 
1 out of 1,838 
1 out of 644 
Years Active: 1977-1983
Title: Michio Iyoda: Innovator in Ignition Systems
Introduction
Michio Iyoda is a notable inventor from Aichi, Japan, recognized for his contributions to ignition systems in internal combustion engines. With a total of 6 patents, Iyoda has made significant advancements in automotive technology.
Latest Patents
One of his latest patents is a distributorless ignition system for multicylinder internal-combustion engines. This innovative system replaces the traditional distributor with high-voltage rectifier diodes, which are connected between the secondary winding of an ignition coil and the respective spark plugs. The diodes are designed to handle voltages developed in the secondary winding, ensuring that discharges occur at the spark plugs in the correct firing order. Each diode consists of multiple laminated silicon rectifier diode chips, capable of withstanding reverse breakdown voltages ranging from 400 to 850 volts. This construction allows the diodes to endure overvoltages that may arise in the ignition system's secondary circuit.
Another significant patent by Iyoda is an ignition system for internal combustion engines. This contactless ignition system features an ignition coil with two primary windings, whose currents are alternately switched on and off by two power transistors. The system includes Zener diodes with breakdown voltages of 300 to 400 volts, which serve as reverse current blocking diodes. This design not only protects against reverse currents but also provides overvoltage protection, enhancing the reliability of the ignition system.
Career Highlights
Iyoda has worked with prominent companies in the automotive industry, including Nippondenso Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has contributed to his expertise in ignition technology and automotive innovations.
Collaborations
Throughout his career, Iyoda has collaborated with notable colleagues such as Osamu Sugie and Nobuhito Hobo. These partnerships have likely fostered a creative environment that has led to significant advancements in their respective fields.
Conclusion
Michio Iyoda's contributions to ignition systems have had a lasting impact on automotive technology. His innovative patents and collaborations with industry leaders highlight his role as a key figure in the development of efficient ignition solutions.