Location History:
- Kariya, JP (1992)
- Anjou, JP (1991 - 1993)
- Anjo, JP (1991 - 1995)
Company Filing History:
8 out of 3,252 
4 out of 36,713 
2 out of 1,600 Years Active: 1991-1995
Title: Eiju Matsunaga: Innovator in Automotive Suspension Systems
Introduction
Eiju Matsunaga is a prominent inventor based in Anjou, Japan, known for his significant contributions to automotive technology. With a total of nine patents to his name, Matsunaga has focused on enhancing vehicle performance and comfort through innovative suspension control systems.
Latest Patents
Matsunaga's latest patents include a suspension control system designed to improve the riding comfort and maneuverability of automotive vehicles. This system operates without the need for numerous sensors, utilizing a speed difference signal derived from the difference between estimated vehicle speed and wheel speed. The signal is filtered through band-pass filters that allow for the passage of sprung and unsprung resonance frequency components. After amplification, the filtered speed difference is compared to a reference value, enabling the adjustment of the shock absorber's damping force based on road surface conditions. This approach significantly reduces the number of sensors required, simplifying the system's construction and lowering manufacturing costs. Another notable patent involves a suspension control system that detects the damping force change rate of shock absorbers, allowing for real-time adjustments based on road conditions.
Career Highlights
Throughout his career, Eiju Matsunaga has worked with notable companies in the automotive industry, including Nippondenso Co., Ltd. and Toyota Motor Corporation. His experience in these organizations has contributed to his expertise in developing advanced suspension technologies.
Collaborations
Matsunaga has collaborated with esteemed colleagues such as Yutaka Suzuki and Yasuhiro Tsutsumi, further enhancing the innovation and effectiveness of his projects.
Conclusion
Eiju Matsunaga's work in automotive suspension systems exemplifies the impact of innovative thinking in enhancing vehicle performance and comfort. His patents reflect a commitment to simplifying technology while improving functionality, making him a notable figure in the field of automotive engineering.